26.3.6. MySQL Connector/J Change History
12-22-05 - Version 5.0.0-beta
- XADataSource implemented (ported from 3.2 branch which won't be
released as a product). Use
"com.mysql.jdbc.jdbc2.optional.MysqlXADataSource" as your datasource
class name in your application server to utilize XA transactions
in MySQL-5.0.10 and newer.
- PreparedStatement.setString() didn't work correctly when
sql_mode on server contained NO_BACKSLASH_ESCAPES, and no characters
that needed escaping were present in the string.
- Attempt detection of the MySQL type "BINARY" (it's an alias, so this isn't
always reliable), and use the java.sql.Types.BINARY type mapping for it.
- Moved -bin-g.jar file into separate "debug" subdirectory to avoid confusion.
- Don't allow .setAutoCommit(true), or .commit() or .rollback() on an XA-managed
connection as-per the JDBC specification.
- If the connection "useTimezone" is set to "true", then also respect timezone
conversions in escape-processed string literals (e.g. "{ts ...}" and
"{t ...}").
- Return original column name for RSMD.getColumnName() if the column was aliased,
alias name for .getColumnLabel() (if aliased), and original table name
for .getTableName(). Note this only works for MySQL-4.1 and newer, as
older servers don't make this information available to clients.
- Setting "useJDBCCompliantTimezoneShift=true" (it's not the default)
causes the driver to use GMT for _all_ TIMESTAMP/DATETIME timezones,
and the current VM timezone for any other type that refers to timezones.
This feature can not be used when "useTimezone=true" to convert between
server and client timezones.
- Add one level of indirection of internal representation of CallableStatement
parameter metadata to avoid class not found issues on JDK-1.3 for
ParameterMetadata interface (which doesn't exist prior to JDBC-3.0).
- Added unit tests for XADatasource, as well as friendlier exceptions
for XA failures compared to the "stock" XAException (which has no
messages).
- Fixed BUG#14279 - Idle timeouts cause XAConnections to whine about rolling
themselves back
- Added support for Connector/MXJ integration via url subprotocol
"jdbc:mysql:mxj://....".
- Moved all SQLException constructor usage to a factory in SQLError
(ground-work for JDBC-4.0 SQLState-based exception classes).
- Removed Java5-specific calls to BigDecimal constructor (when
result set value is '', (int)0 was being used as an argument
in-directly via method return value. This signature doesn't exist
prior to Java5.)
- Moved all SQLException creation to a factory method in SQLError,
groundwork for JDBC-4.0 SQLState class-based exceptions.
- Added service-provider entry to META-INF/services/java.sql.Driver
for JDBC-4.0 support.
- Return "[VAR]BINARY" for RSMD.getColumnTypeName() when that is actually
the type, and it can be distinguished (MySQL-4.1 and newer).
- When fix for BUG#14562 was merged from 3.1.12, added functionality
for CallableStatement's parameter metadata to return correct
information for .getParameterClassName().
- Fuller synchronization of Connection to avoid deadlocks when
using multithreaded frameworks that multithread a single connection
(usually not recommended, but the JDBC spec allows it anyways),
part of fix to BUG#14972).
- Implementation of Statement.cancel() and Statement.setQueryTimeout().
Both require MySQL-5.0.0 or newer server, require a separate connection
to issue the "KILL QUERY" command, and in the case of setQueryTimeout()
creates an additional thread to handle the timeout functionality.
Note: Failures to cancel the statement for setQueryTimeout() may manifest
themselves as RuntimeExceptions rather than failing silently, as there
is currently no way to unblock the thread that is executing the query being
cancelled due to timeout expiration and have it throw the exception
instead.
xx-xx-05 - Version 3.1.13
- Fixed BUG#15464 - INOUT parameter does not store IN value.
- Fixed BUG#14609 - Exception thrown for new decimal type when
using updatable result sets.
- Fixed BUG#15544, no "dos" character set in MySQL > 4.1.0
- Fixed BUG#15383 - PreparedStatement.setObject() serializes
BigInteger as object, rather than sending as numeric value
(and is thus not complementary to .getObject() on an UNSIGNED
LONG type).
- Fixed BUG#11874 - ResultSet.getShort() for UNSIGNED TINYINT
returned wrong values.
- Fixed BUG#15676 - lib-nodist directory missing from
package breaks out-of-box build
- Fixed BUG#15854 - DBMD.getColumns() returns wrong type for BIT.
11-30-05 - Version 3.1.12
- Fixed client-side prepared statement bug with embedded ? inside
quoted identifiers (it was recognized as a placeholder, when it
was not).
- Don't allow executeBatch() for CallableStatements with registered
OUT/INOUT parameters (JDBC compliance).
- Fall back to platform-encoding for URLDecoder.decode() when
parsing driver URL properties if the platform doesn't have a
two-argument version of this method.
- Fixed BUG#14562 - Java type conversion may be incorrect for
mediumint.
- Added configuration property "useGmtMillisForDatetimes" which
when set to true causes ResultSet.getDate(), .getTimestamp() to
return correct millis-since GMT when .getTime() is called on
the return value (currently default is "false" for legacy
behavior).
- Fixed DatabaseMetaData.stores*Identifiers():
* if lower_case_table_names=0 (on server):
storesLowerCaseIdentifiers() returns false
storesLowerCaseQuotedIdentifiers() returns false
storesMixedCaseIdentifiers() returns true
storesMixedCaseQuotedIdentifiers() returns true
storesUpperCaseIdentifiers() returns false
storesUpperCaseQuotedIdentifiers() returns true
* if lower_case_table_names=1 (on server):
storesLowerCaseIdentifiers() returns true
storesLowerCaseQuotedIdentifiers() returns true
storesMixedCaseIdentifiers() returns false
storesMixedCaseQuotedIdentifiers() returns false
storesUpperCaseIdentifiers() returns false
storesUpperCaseQuotedIdentifiers() returns true
- Fixed BUG#14815 - DatabaseMetaData.getColumns() doesn't
return TABLE_NAME correctly.
- Fixed BUG#14909 - escape processor replaces quote character
in quoted string with string delimiter.
- Fixed BUG#12975 - OpenOffice expects
DBMD.supportsIntegrityEnhancementFacility() to return "true"
if foreign keys are supported by the datasource, even though
this method also covers support for check constraints,
which MySQL _doesn't_ have. Setting the configuration property
"overrideSupportsIntegrityEnhancementFacility" to "true" causes
the driver to return "true" for this method.
- Added "com.mysql.jdbc.testsuite.url.default" system property to
set default JDBC url for testsuite (to speed up bug resolution
when I'm working in Eclipse).
- Fixed BUG#14938 - Unable to initialize character set mapping
tables (due to J2EE classloader differences).
- Fixed BUG#14972 - Deadlock while closing server-side prepared
statements from multiple threads sharing one connection.
- Fixed BUG#12230 - logSlowQueries should give better info.
- Fixed BUG#13775 - Extraneous sleep on autoReconnect.
- Fixed BUG#15024 - Driver incorrectly closes streams passed as
arguments to PreparedStatements. Reverts to legacy behavior by
setting the JDBC configuration property "autoClosePStmtStreams"
to "true" (also included in the 3-0-Compat configuration "bundle").
- Fixed BUG#13048 - maxQuerySizeToLog is not respected. Added logging of
bound values for execute() phase of server-side prepared statements
when profileSQL=true as well.
- Fixed BUG#15065 - Usage advisor complains about unreferenced
columns, even though they've been referenced.
- Don't increase timeout for failover/reconnect (BUG#6577)
- Process escape tokens in Connection.prepareStatement(...), fix
for BUG#15141. You can disable this behavior by setting
the JDBC URL configuration property "processEscapeCodesForPrepStmts"
to "false".
- Fixed BUG#13255 - Reconnect during middle of executeBatch()
should not occur if autoReconnect is enabled.
10-07-05 - Version 3.1.11-stable
- Fixed BUG#11629 - Spurious "!" on console when character
encoding is "utf8".
- Fixed statements generated for testcases missing ";" for
"plain" statements.
- Fixed BUG#11663 - Incorrect generation of testcase scripts
for server-side prepared statements.
- Fixed regression caused by fix for BUG#11552 that caused driver
to return incorrect values for unsigned integers when those
integers where within the range of the positive signed type.
- Moved source code to svn repo.
- Fixed BUG#11797 - Escape tokenizer doesn't respect stacked single quotes
for escapes.
- GEOMETRY type not recognized when using server-side prepared statements.
- Fixed BUG#11879 -- ReplicationConnection won't switch to slave, throws
"Catalog can't be null" exception.
- Fixed BUG#12218, properties shared between master and slave with
replication connection.
- Fixed BUG#10630, Statement.getWarnings() fails with NPE if statement
has been closed.
- Only get char[] from SQL in PreparedStatement.ParseInfo() when needed.
- Fixed BUG#12104 - Geometry types not handled with server-side prepared
statements.
- Fixed BUG#11614 - StringUtils.getBytes() doesn't work when using
multibyte character encodings and a length in _characters_ is
specified.
- Fixed BUG#11798 - Pstmt.setObject(...., Types.BOOLEAN) throws exception.
- Fixed BUG#11976 - maxPerformance.properties mis-spells
"elideSetAutoCommits".
- Fixed BUG#11575 -- DBMD.storesLower/Mixed/UpperIdentifiers()
reports incorrect values for servers deployed on Windows.
- Fixed BUG#11190 - ResultSet.moveToCurrentRow() fails to work when
preceded by a call to ResultSet.moveToInsertRow().
- Fixed BUG#11115, VARBINARY data corrupted when using server-side
prepared statements and .setBytes().
- Fixed BUG#12229 - explainSlowQueries hangs with server-side
prepared statements.
- Fixed BUG#11498 - Escape processor didn't honor strings demarcated
with double quotes.
- Lifted restriction of changing streaming parameters with server-side
prepared statements. As long as _all_ streaming parameters were set
before execution, .clearParameters() does not have to be called.
(due to limitation of client/server protocol, prepared statements
can not reset _individual_ stream data on the server side).
- Reworked Field class, *Buffer, and MysqlIO to be aware of field
lengths > Integer.MAX_VALUE.
- Updated DBMD.supportsCorrelatedQueries() to return true for versions >
4.1, supportsGroupByUnrelated() to return true and
getResultSetHoldability() to return HOLD_CURSORS_OVER_COMMIT.
- Fixed BUG#12541 - Handling of catalog argument in
DatabaseMetaData.getIndexInfo(), which also means changes to the following
methods in DatabaseMetaData:
- getBestRowIdentifier()
- getColumns()
- getCrossReference()
- getExportedKeys()
- getImportedKeys()
- getIndexInfo()
- getPrimaryKeys()
- getProcedures() (and thus indirectly getProcedureColumns())
- getTables()
The "catalog" argument in all of these methods now behaves in the following
way:
- Specifying NULL means that catalog will not be used to filter the
results (thus all databases will be searched), unless you've
set "nullCatalogMeansCurrent=true" in your JDBC URL properties.
- Specifying "" means "current" catalog, even though this isn't quite
JDBC spec compliant, it's there for legacy users.
- Specifying a catalog works as stated in the API docs.
- Made Connection.clientPrepare() available from "wrapped" connections
in the jdbc2.optional package (connections built by
ConnectionPoolDataSource instances).
- Added Connection.isMasterConnection() for clients to be able to determine
if a multi-host master/slave connection is connected to the first host
in the list.
- Fixed BUG#12753 - Tokenizer for "=" in URL properties was causing
sessionVariables=.... to be parameterized incorrectly.
- Fixed BUG#11781, foreign key information that is quoted is
parsed incorrectly when DatabaseMetaData methods use that
information.
- The "sendBlobChunkSize" property is now clamped to "max_allowed_packet"
with consideration of stream buffer size and packet headers to avoid
PacketTooBigExceptions when "max_allowed_packet" is similar in size
to the default "sendBlobChunkSize" which is 1M.
- CallableStatement.clearParameters() now clears resources associated
with INOUT/OUTPUT parameters as well as INPUT parameters.
- Fixed BUG#12417 - Connection.prepareCall() is database name
case-sensitive (on Windows systems).
- Fixed BUG#12752 - Cp1251 incorrectly mapped to win1251 for
servers newer than 4.0.x.
- Fixed BUG#12970 - java.sql.Types.OTHER returned for
BINARY and VARBINARY columns when using
DatabaseMetaData.getColumns().
- ServerPreparedStatement.getBinding() now checks if the statement
is closed before attempting to reference the list of parameter
bindings, to avoid throwing a NullPointerException.
- Fixed BUG#13277 - ResultSetMetaData from
Statement.getGeneratedKeys() caused NullPointerExceptions to be
thrown whenever a method that required a connection reference
was called.
- Backport of Field class, ResultSetMetaData.getColumnClassName(),
and ResultSet.getObject(int) changes from 5.0 branch to fix
behavior surrounding VARCHAR BINARY/VARBINARY and related
types.
- Fixed NullPointerException when converting "catalog" parameter
in many DatabaseMetaDataMethods to byte[]s (for the result set)
when the parameter is null. ("null" isn't technically allowed
by the JDBC specification, but we've historically allowed it).
- Backport of VAR[BINARY|CHAR] [BINARY] types detection from
5.0 branch.
- Read response in MysqlIO.sendFileToServer(), even if the
local file can't be opened, otherwise next query issued
will fail, because it's reading the response to the empty
LOAD DATA INFILE packet sent to the server.
- Workaround for BUG#13374 - ResultSet.getStatement()
on closed result set returns NULL (as per JDBC 4.0 spec,
but not backward-compatible). Set the connection property
"retainStatementAfterResultSetClose" to "true" to be able
to retrieve a ResultSet's statement after the ResultSet has
been closed via .getStatement() (the default is "false", to
be JDBC-compliant and to reduce the chance that code using
JDBC leaks Statement instances).
- Fixed BUG#13453 - URL configuration parameters don't allow
'&' or '=' in their values. The JDBC driver now parses
configuration parameters as if they are encoded using the
application/x-www-form-urlencoded format as specified
by java.net.URLDecoder -
https://java.sun.com/j2se/1.5.0/docs/api/java/net/URLDecoder.html
If the '%' character is present in a configuration property,
it must now be represented as %25, which is the encoded form
of '%' when using application/x-www-form-urlencoded encoding.
- The configuration property "sessionVariables" now allows you to
specify variables that start with the "@" sign.
- Fixed BUG#13043 - when 'gatherPerfMetrics' is enabled for
servers older than 4.1.0, a NullPointerException is thrown from
the constructor of ResultSet if the query doesn't use any tables.
06-23-05 - Version 3.1.10-stable
- Fixed connecting without a database specified raised an exception
in MysqlIO.changeDatabaseTo().
- Initial implemention of ParameterMetadata for
PreparedStatement.getParameterMetadata(). Only works fully
for CallableStatements, as current server-side prepared statements
return every parameter as a VARCHAR type.
06-22-05 - Version 3.1.9-stable
- Overhaul of character set configuration, everything now
lives in a properties file.
- Driver now correctly uses CP932 if available on the server
for Windows-31J, CP932 and MS932 java encoding names,
otherwise it resorts to SJIS, which is only a close
approximation. Currently only MySQL-5.0.3 and newer (and
MySQL-4.1.12 or .13, depending on when the character set
gets backported) can reliably support any variant of CP932.
- Fixed BUG#9064 - com.mysql.jdbc.PreparedStatement.ParseInfo
does unnecessary call to toCharArray().
- Fixed Bug#10144 - Memory leak in ServerPreparedStatement if
serverPrepare() fails.
- Actually write manifest file to correct place so it ends up
in the binary jar file.
- Added "createDatabaseIfNotExist" property (default is "false"),
which will cause the driver to ask the server to create the
database specified in the URL if it doesn't exist. You must have
the appropriate privileges for database creation for this to
work.
- Fixed BUG#10156 - Unsigned SMALLINT treated as signed for ResultSet.getInt(),
fixed all cases for UNSIGNED integer values and server-side prepared statements,
as well as ResultSet.getObject() for UNSIGNED TINYINT.
- Fixed BUG#10155, double quotes not recognized when parsing
client-side prepared statements.
- Made enableStreamingResults() visible on
com.mysql.jdbc.jdbc2.optional.StatementWrapper.
- Made ServerPreparedStatement.asSql() work correctly so auto-explain
functionality would work with server-side prepared statements.
- Made JDBC2-compliant wrappers public in order to allow access to
vendor extensions.
- Cleaned up logging of profiler events, moved code to dump a profiler
event as a string to com.mysql.jdbc.log.LogUtils so that third
parties can use it.
- DatabaseMetaData.supportsMultipleOpenResults() now returns true. The
driver has supported this for some time, DBMD just missed that fact.
- Fixed BUG#10310 - Driver doesn't support {?=CALL(...)} for calling
stored functions. This involved adding support for function retrieval
to DatabaseMetaData.getProcedures() and getProcedureColumns() as well.
- Fixed BUG#10485, SQLException thrown when retrieving YEAR(2)
with ResultSet.getString(). The driver will now always treat YEAR types
as java.sql.Dates and return the correct values for getString().
Alternatively, the "yearIsDateType" connection property can be set to
"false" and the values will be treated as SHORTs.
- The datatype returned for TINYINT(1) columns when "tinyInt1isBit=true"
(the default) can be switched between Types.BOOLEAN and Types.BIT
using the new configuration property "transformedBitIsBoolean", which
defaults to "false". If set to "false" (the default),
DatabaseMetaData.getColumns() and ResultSetMetaData.getColumnType()
will return Types.BOOLEAN for TINYINT(1) columns. If "true",
Types.BOOLEAN will be returned instead. Irregardless of this configuration
property, if "tinyInt1isBit" is enabled, columns with the type TINYINT(1)
will be returned as java.lang.Boolean instances from
ResultSet.getObject(..), and ResultSetMetaData.getColumnClassName()
will return "java.lang.Boolean".
- Fixed BUG#10496 - SQLException is thrown when using property
"characterSetResults" with cp932 or eucjpms.
- Reorganized directory layout, sources now in "src" folder,
don't pollute parent directory when building, now output goes
to "./build", distribution goes to "./dist".
- Added support/bug hunting feature that generates .sql test
scripts to STDERR when "autoGenerateTestcaseScript" is set
to "true".
- Fixed BUG#10850 - 0-length streams not sent to server when
using server-side prepared statements.
- Setting "cachePrepStmts=true" now causes the Connection to also
cache the check the driver performs to determine if a prepared
statement can be server-side or not, as well as caches server-side
prepared statements for the lifetime of a connection. As before,
the "prepStmtCacheSize" parameter controls the size of these
caches.
- Try to handle OutOfMemoryErrors more gracefully. Although not
much can be done, they will in most cases close the connection
they happened on so that further operations don't run into
a connection in some unknown state. When an OOM has happened,
any further operations on the connection will fail with a
"Connection closed" exception that will also list the OOM exception
as the reason for the implicit connection close event.
- Don't send COM_RESET_STMT for each execution of a server-side
prepared statement if it isn't required.
- Driver detects if you're running MySQL-5.0.7 or later, and does
not scan for "LIMIT ?[,?]" in statements being prepared, as the
server supports those types of queries now.
- Fixed BUG#11115, Varbinary data corrupted when using server-side
prepared statements and ResultSet.getBytes().
- Connection.setCatalog() is now aware of the "useLocalSessionState"
configuration property, which when set to true will prevent
the driver from sending "USE ..." to the server if the requested
catalog is the same as the current catalog.
- Added the following configuration bundles, use one or many via
the "useConfigs" configuration property:
* maxPerformance -- maximum performance without being reckless
* solarisMaxPerformance -- maximum performance for Solaris,
avoids syscalls where it can
* 3-0-Compat -- Compatibility with Connector/J 3.0.x functionality
- Added "maintainTimeStats" configuration property (defaults to "true"),
which tells the driver whether or not to keep track of the last query time
and the last successful packet sent to the server's time. If set to
false, removes two syscalls per query.
- Fixed BUG#11259, autoReconnect ping causes exception on connection
startup.
- Fixed BUG#11360 Connector/J dumping query into SQLException twice
- Fixed PreparedStatement.setClob() not accepting null as a parameter.
- Fixed BUG#11411 - Production package doesn't include JBoss integration
classes.
- Removed nonsensical "costly type conversion" warnings when using
usage advisor.
04-14-05 - Version 3.1.8-stable
- Fixed DatabaseMetaData.getTables() returning views when they were
not asked for as one of the requested table types.
- Added support for new precision-math DECIMAL type in MySQL >= 5.0.3.
- Fixed ResultSet.getTime() on a NULL value for server-side prepared
statements throws NPE.
- Made Connection.ping() a public method.
- Fixed Bug#8868, DATE_FORMAT() queries returned as BLOBs from getObject().
- ServerPreparedStatements now correctly 'stream' BLOB/CLOB data to the
server. You can configure the threshold chunk size using the
JDBC URL property 'blobSendChunkSize' (the default is one megabyte).
- BlobFromLocator now uses correct identifier quoting when generating
prepared statements.
- Server-side session variables can be preset at connection time by
passing them as a comma-delimited list for the connection property
'sessionVariables'.
- Fixed regression in ping() for users using autoReconnect=true.
- Fixed BUG#9040 - PreparedStatement.addBatch() doesn't work with server-side
prepared statements and streaming BINARY data.
- Fixed BUG#8800 - DBMD.supportsMixedCase*Identifiers() returns wrong
value on servers running on case-sensitive filesystems.
- Fixed BUG#9206, can not use 'UTF-8' for characterSetResults
configuration property.
- Fixed BUG#9236, a continuation of BUG#8868, where functions used in queries
that should return non-string types when resolved by temporary tables suddenly
become opaque binary strings (work-around for server limitation). Also fixed
fields with type of CHAR(n) CHARACTER SET BINARY to return correct/matching
classes for RSMD.getColumnClassName() and ResultSet.getObject().
- Fixed BUG#8792 - DBMD.supportsResultSetConcurrency() not returning
true for forward-only/read-only result sets (we obviously support this).
- Fixed BUG#8803, 'DATA_TYPE' column from DBMD.getBestRowIdentifier()
causes ArrayIndexOutOfBoundsException when accessed (and in fact, didn't
return any value).
- Check for empty strings ('') when converting char/varchar column data to numbers,
throw exception if 'emptyStringsConvertToZero' configuration property is set
to 'false' (for backward-compatibility with 3.0, it is now set to 'true'
by default, but will most likely default to 'false' in 3.2).
- Fixed BUG#9320 - PreparedStatement.getMetaData() inserts blank row in database
under certain conditions when not using server-side prepared statements.
- Connection.canHandleAsPreparedStatement() now makes 'best effort' to distinguish
LIMIT clauses with placeholders in them from ones without in order to have fewer
false positives when generating work-arounds for statements the server cannot
currently handle as server-side prepared statements.
- Fixed build.xml to not compile log4j logging if log4j not available.
- Added support for the c3p0 connection pool's (https://c3p0.sf.net/)
validation/connection checker interface which uses the lightweight
'COM_PING' call to the server if available. To use it, configure your
c3p0 connection pool's 'connectionTesterClassName' property to use
'com.mysql.jdbc.integration.c3p0.MysqlConnectionTester'.
- Better detection of LIMIT inside/outside of quoted strings so that
the driver can more correctly determine whether a prepared statement
can be prepared on the server or not.
- Fixed BUG#9319 - Stored procedures with same name in
different databases confuse the driver when it tries to determine
parameter counts/types.
- Added finalizers to ResultSet and Statement implementations to be JDBC
spec-compliant, which requires that if not explicitly closed, these
resources should be closed upon garbage collection.
- Fixed BUG#9682 - Stored procedures with DECIMAL parameters with
storage specifications that contained "," in them would fail.
- PreparedStatement.setObject(int, Object, int type, int scale) now
uses scale value for BigDecimal instances.
- Fixed BUG#9704 - Statement.getMoreResults() could throw NPE when
existing result set was .close()d.
- The performance metrics feature now gathers information about
number of tables referenced in a SELECT.
- The logging system is now automatically configured. If the value has
been set by the user, via the URL property "logger" or the system
property "com.mysql.jdbc.logger", then use that, otherwise, autodetect
it using the following steps:
Log4j, if it's available,
Then JDK1.4 logging,
Then fallback to our STDERR logging.
- Fixed BUG#9778, DBMD.getTables() shouldn't return tables if views
are asked for, even if the database version doesn't support views.
- Fixed driver not returning 'true' for '-1' when ResultSet.getBoolean()
was called on result sets returned from server-side prepared statements.
- Added a Manifest.MF file with implementation information to the .jar
file.
- More tests in Field.isOpaqueBinary() to distinguish opaque binary (i.e.
fields with type CHAR(n) and CHARACTER SET BINARY) from output of
various scalar and aggregate functions that return strings.
- Fixed BUG#9917 - Should accept null for catalog (meaning use current)
in DBMD methods, even though it's not JDBC-compliant for legacy's sake.
Disable by setting connection property "nullCatalogMeansCurrent" to "false"
(which will be the default value in C/J 3.2.x).
- Fixed BUG#9769 - Should accept null for name patterns in DBMD (meaning "%"),
even though it isn't JDBC compliant, for legacy's sake. Disable by setting
connection property "nullNamePatternMatchesAll" to "false" (which will be
the default value in C/J 3.2.x).
02-18-05 - Version 3.1.7-stable
- Fixed BUG#7686, Timestamp key column data needed "_binary'"
stripped for UpdatableResultSet.refreshRow().
- Fixed BUG#7715 - Timestamps converted incorrectly to strings
with Server-side prepared statements and updatable result sets.
- Detect new sql_mode variable in string form (it used to be
integer) and adjust quoting method for strings appropriately.
- Added 'holdResultsOpenOverStatementClose' property (default is
false), that keeps result sets open over statement.close() or new
execution on same statement (suggested by Kevin Burton).
- Fixed BUG#7952 -- Infinite recursion when 'falling back' to master
in failover configuration.
- Disable multi-statements (if enabled) for MySQL-4.1 versions prior
to version 4.1.10 if the query cache is enabled, as the server
returns wrong results in this configuration.
- Fixed duplicated code in configureClientCharset() that prevented
useOldUTF8Behavior=true from working properly.
- Removed 'dontUnpackBinaryResults' functionality, the driver now
always stores results from server-side prepared statements as-is
from the server and unpacks them on demand.
- Fixed BUG#8096 where emulated locators corrupt binary data
when using server-side prepared statements.
- Fixed synchronization issue with
ServerPreparedStatement.serverPrepare() that could cause
deadlocks/crashes if connection was shared between threads.
- By default, the driver now scans SQL you are preparing via all
variants of Connection.prepareStatement() to determine if it is a
supported type of statement to prepare on the server side, and if
it is not supported by the server, it instead prepares it as a
client-side emulated prepared statement (BUG#4718). You can
disable this by passing 'emulateUnsupportedPstmts=false' in your
JDBC URL.
- Remove _binary introducer from parameters used as in/out
parameters in CallableStatement.
- Always return byte[]s for output parameters registered as *BINARY.
- Send correct value for 'boolean' "true" to server for
PreparedStatement.setObject(n, "true", Types.BIT).
- Fixed bug with Connection not caching statements from
prepareStatement() when the statement wasn't a server-side
prepared statement.
- Choose correct 'direction' to apply time adjustments when both
client and server are in GMT timezone when using
ResultSet.get(..., cal) and PreparedStatement.set(...., cal).
- Added 'dontTrackOpenResources' option (default is false, to be
JDBC compliant), which helps with memory use for non-well-behaved
apps (i.e applications which don't close Statements when they
should).
- Fixed BUG#8428 - ResultSet.getString() doesn't maintain format
stored on server, bug fix only enabled when 'noDatetimeStringSync'
property is set to 'true' (the default is 'false').
- Fixed NPE in ResultSet.realClose() when using usage advisor and
result set was already closed.
- Fixed BUG#8487 - PreparedStatements not creating streaming result
sets.
- Don't pass NULL to String.valueOf() in
ResultSet.getNativeConvertToString(), as it stringifies it (i.e.
returns "null"), which is not correct for the method in question.
- Fixed BUG#8484 - ResultSet.getBigDecimal() throws exception
when rounding would need to occur to set scale. The driver now
chooses a rounding mode of 'half up' if non-rounding
BigDecimal.setScale() fails.
- Added 'useLocalSessionState' configuration property, when set to
'true' the JDBC driver trusts that the application is well-behaved
and only sets autocommit and transaction isolation levels using
the methods provided on java.sql.Connection, and therefore can
manipulate these values in many cases without incurring
round-trips to the database server.
- Added enableStreamingResults() to Statement for connection pool
implementations that check Statement.setFetchSize() for
specification-compliant values. Call Statement.setFetchSize(>=0)
to disable the streaming results for that statement.
- Added support for BIT type in MySQL-5.0.3. The driver will treat
BIT(1-8) as the JDBC standard BIT type (which maps to
java.lang.Boolean), as the server does not currently send enough
information to determine the size of a bitfield when < 9 bits are
declared. BIT(>9) will be treated as VARBINARY, and will return
byte[] when getObject() is called.
12-23-04 - Version 3.1.6-stable
- Fixed hang on SocketInputStream.read() with Statement.setMaxRows() and
multiple result sets when driver has to truncate result set directly,
rather than tacking a 'LIMIT n' on the end of it.
- Fixed BUG#7026 - DBMD.getProcedures() doesn't respect catalog parameter.
12-02-04 - Version 3.1.5-gamma
- Fix comparisons made between string constants and dynamic strings that
are either toUpperCase()d or toLowerCase()d to use Locale.ENGLISH, as
some locales 'override' case rules for English. Also use
StringUtils.indexOfIgnoreCase() instead of .toUpperCase().indexOf(),
avoids creating a very short-lived transient String instance.
- Fixed BUG#5235 - Server-side prepared statements did not honor
'zeroDateTimeBehavior' property, and would cause class-cast
exceptions when using ResultSet.getObject(), as the all-zero string
was always returned.
- Fixed batched updates with server prepared statements weren't looking if
the types had changed for a given batched set of parameters compared
to the previous set, causing the server to return the error
'Wrong arguments to mysql_stmt_execute()'.
- Handle case when string representation of timestamp contains trailing '.'
with no numbers following it.
- Fixed BUG#5706 - Inefficient detection of pre-existing string instances
in ResultSet.getNativeString().
- Don't throw exceptions for Connection.releaseSavepoint().
- Use a per-session Calendar instance by default when decoding dates
from ServerPreparedStatements (set to old, less performant behavior by
setting property 'dynamicCalendars=true').
- Added experimental configuration property 'dontUnpackBinaryResults',
which delays unpacking binary result set values until they're asked for,
and only creates object instances for non-numerical values (it is set
to 'false' by default). For some usecase/jvm combinations, this is
friendlier on the garbage collector.
- Fixed BUG#5729 - UNSIGNED BIGINT unpacked incorrectly from
server-side prepared statement result sets.
- Fixed BUG#6225 - ServerSidePreparedStatement allocating short-lived
objects un-necessarily.
- Removed un-wanted new Throwable() in ResultSet constructor due to bad
merge (caused a new object instance that was never used for every result
set created) - Found while profiling for BUG#6359.
- Fixed too-early creation of StringBuffer in EscapeProcessor.escapeSQL(),
also return String when escaping not needed (to avoid unnecssary object
allocations). Found while profiling for BUG#6359.
- Use null-safe-equals for key comparisons in updatable result sets.
- Fixed BUG#6537, SUM() on Decimal with server-side prepared statement ignores
scale if zero-padding is needed (this ends up being due to conversion to DOUBLE
by server, which when converted to a string to parse into BigDecimal, loses all
'padding' zeros).
- Use DatabaseMetaData.getIdentifierQuoteString() when building DBMD
queries.
- Use 1MB packet for sending file for LOAD DATA LOCAL INFILE if that
is < 'max_allowed_packet' on server.
- Fixed BUG#6399, ResultSetMetaData.getColumnDisplaySize() returns incorrect
values for multi-byte charsets.
- Make auto-deserialization of java.lang.Objects stored in BLOBs
configurable via 'autoDeserialize' property (defaults to 'false').
- Re-work Field.isOpaqueBinary() to detect 'CHAR(n) CHARACTER SET BINARY'
to support fixed-length binary fields for ResultSet.getObject().
- Use our own implementation of buffered input streams to get around
blocking behavior of java.io.BufferedInputStream. Disable this with
'useReadAheadInput=false'.
- Fixed BUG#6348, failing to connect to the server when one of the
addresses for the given host name is IPV6 (which the server does
not yet bind on). The driver now loops through _all_ IP addresses
for a given host, and stops on the first one that accepts() a
socket.connect().
09-04-04 - Version 3.1.4-beta
- Fixed BUG#4510 - connector/j 3.1.3 beta does not handle integers
correctly (caused by changes to support unsigned reads in
Buffer.readInt() -> Buffer.readShort()).
- Added support in DatabaseMetaData.getTables() and getTableTypes()
for VIEWs which are now available in MySQL server version 5.0.x.
- Fixed BUG#4642 -- ServerPreparedStatement.execute*() sometimes
threw ArrayIndexOutOfBoundsException when unpacking field metadata.
- Optimized integer number parsing, enable 'old' slower integer parsing
using JDK classes via 'useFastIntParsing=false' property.
- Added 'useOnlyServerErrorMessages' property, which causes message text
in exceptions generated by the server to only contain the text sent by
the server (as opposed to the SQLState's 'standard' description, followed
by the server's error message). This property is set to 'true' by default.
- Fixed BUG#4689 - ResultSet.wasNull() does not work for primatives if a
previous null was returned.
- Track packet sequence numbers if enablePacketDebug=true, and throw an
exception if packets received out-of-order.
- Fixed BUG#4482, ResultSet.getObject() returns wrong type for strings
when using prepared statements.
- Calling MysqlPooledConnection.close() twice (even though an application
error), caused NPE. Fixed.
- Fixed BUG#5012 -- ServerPreparedStatements dealing with return of
DECIMAL type don't work.
- Fixed BUG#5032 -- ResultSet.getObject() doesn't return
type Boolean for pseudo-bit types from prepared statements on 4.1.x
(shortcut for avoiding extra type conversion when using binary-encoded
result sets obscurred test in getObject() for 'pseudo' bit type)
- You can now use URLs in 'LOAD DATA LOCAL INFILE' statements, and the
driver will use Java's built-in handlers for retreiving the data and
sending it to the server. This feature is not enabled by default,
you must set the 'allowUrlInLocalInfile' connection property to 'true'.
- The driver is more strict about truncation of numerics on
ResultSet.get*(), and will throw an SQLException when truncation is
detected. You can disable this by setting 'jdbcCompliantTruncation' to
false (it is enabled by default, as this functionality is required
for JDBC compliance).
- Added three ways to deal with all-zero datetimes when reading them from
a ResultSet, 'exception' (the default), which throws an SQLException
with an SQLState of 'S1009', 'convertToNull', which returns NULL instead of
the date, and 'round', which rounds the date to the nearest closest value
which is '0001-01-01'.
- Fixed ServerPreparedStatement to read prepared statement metadata off
the wire, even though it's currently a placeholder instead of using
MysqlIO.clearInputStream() which didn't work at various times because
data wasn't available to read from the server yet. This fixes sporadic
errors users were having with ServerPreparedStatements throwing
ArrayIndexOutOfBoundExceptions.
- Use com.mysql.jdbc.Message's classloader when loading resource bundle,
should fix sporadic issues when the caller's classloader can't locate
the resource bundle.
07-07-04 - Version 3.1.3-beta
- Mangle output parameter names for CallableStatements so they
will not clash with user variable names.
- Added support for INOUT parameters in CallableStatements.
- Fix for BUG#4119, null bitmask sent for server-side prepared
statements was incorrect.
- Use SQL Standard SQL states by default, unless 'useSqlStateCodes'
property is set to 'false'.
- Added packet debuging code (see the 'enablePacketDebug' property
documentation).
- Added constants for MySQL error numbers (publicly-accessible,
see com.mysql.jdbc.MysqlErrorNumbers), and the ability to
generate the mappings of vendor error codes to SQLStates
that the driver uses (for documentation purposes).
- Externalized more messages (on-going effort).
- Fix for BUG#4311 - Error in retrieval of mediumint column with
prepared statements and binary protocol.
- Support new timezone variables in MySQL-4.1.3 when
'useTimezone=true'
- Support for unsigned numerics as return types from prepared statements.
This also causes a change in ResultSet.getObject() for the 'bigint unsigned'
type, which used to return BigDecimal instances, it now returns instances
of java.lang.BigInteger.
06-09-04 - Version 3.1.2-alpha
- Fixed stored procedure parameter parsing info when size was
specified for a parameter (i.e. char(), varchar()).
- Enabled callable statement caching via 'cacheCallableStmts'
property.
- Fixed case when no output parameters specified for a
stored procedure caused a bogus query to be issued
to retrieve out parameters, leading to a syntax error
from the server.
- Fixed case when no parameters could cause a NullPointerException
in CallableStatement.setOutputParameters().
- Removed wrapping of exceptions in MysqlIO.changeUser().
- Fixed sending of split packets for large queries, enabled nio
ability to send large packets as well.
- Added .toString() functionality to ServerPreparedStatement,
which should help if you're trying to debug a query that is
a prepared statement (it shows SQL as the server would process).
- Added 'gatherPerformanceMetrics' property, along with properties
to control when/where this info gets logged (see docs for more
info).
- ServerPreparedStatements weren't actually de-allocating
server-side resources when .close() was called.
- Added 'logSlowQueries' property, along with property
'slowQueriesThresholdMillis' to control when a query should
be considered 'slow'.
- Correctly map output parameters to position given in
prepareCall() vs. order implied during registerOutParameter() -
fixes BUG#3146.
- Correctly detect initial character set for servers >= 4.1.0
- Cleaned up detection of server properties.
- Support placeholder for parameter metadata for server >= 4.1.2
- Fix for BUG#3539 getProcedures() does not return any procedures in
result set
- Fix for BUG#3540 getProcedureColumns() doesn't work with wildcards
for procedure name
- Fixed BUG#3520 -- DBMD.getSQLStateType() returns incorrect value.
- Added 'connectionCollation' property to cause driver to issue
'set collation_connection=...' query on connection init if default
collation for given charset is not appropriate.
- Fixed DatabaseMetaData.getProcedures() when run on MySQL-5.0.0 (output of
'show procedure status' changed between 5.0.1 and 5.0.0.
- Fixed BUG#3804 -- getWarnings() returns SQLWarning instead of DataTruncation
- Don't enable server-side prepared statements for server version 5.0.0 or 5.0.1,
as they aren't compatible with the '4.1.2+' style that the driver uses (the driver
expects information to come back that isn't there, so it hangs).
02-14-04 - Version 3.1.1-alpha
- Fixed bug with UpdatableResultSets not using client-side
prepared statements.
- Fixed character encoding issues when converting bytes to
ASCII when MySQL doesn't provide the character set, and
the JVM is set to a multi-byte encoding (usually affecting
retrieval of numeric values).
- Unpack 'unknown' data types from server prepared statements
as Strings.
- Implemented long data (Blobs, Clobs, InputStreams, Readers)
for server prepared statements.
- Implemented Statement.getWarnings() for MySQL-4.1 and newer
(using 'SHOW WARNINGS').
- Default result set type changed to TYPE_FORWARD_ONLY
(JDBC compliance).
- Centralized setting of result set type and concurrency.
- Re-factored how connection properties are set and exposed
as DriverPropertyInfo as well as Connection and DataSource
properties.
- Support for NIO. Use 'useNIO=true' on platforms that support
NIO.
- Support for SAVEPOINTs (MySQL >= 4.0.14 or 4.1.1).
- Support for mysql_change_user()...See the changeUser() method
in com.mysql.jdbc.Connection.
- Reduced number of methods called in average query to be more
efficient.
- Prepared Statements will be re-prepared on auto-reconnect. Any errors
encountered are postponed until first attempt to re-execute the
re-prepared statement.
- Ensure that warnings are cleared before executing queries
on prepared statements, as-per JDBC spec (now that we support
warnings).
- Support 'old' profileSql capitalization in ConnectionProperties.
This property is deprecated, you should use 'profileSQL' if possible.
- Optimized Buffer.readLenByteArray() to return shared empty byte array
when length is 0.
- Allow contents of PreparedStatement.setBlob() to be retained
between calls to .execute*().
- Deal with 0-length tokens in EscapeProcessor (caused by callable
statement escape syntax).
- Check for closed connection on delete/update/insert row operations in
UpdatableResultSet.
- Fix support for table aliases when checking for all primary keys in
UpdatableResultSet.
- Removed useFastDates connection property.
- Correctly initialize datasource properties from JNDI Refs, including
explicitly specified URLs.
- DatabaseMetaData now reports supportsStoredProcedures() for
MySQL versions >= 5.0.0
- Fixed stack overflow in Connection.prepareCall() (bad merge).
- Fixed IllegalAccessError to Calendar.getTimeInMillis() in DateTimeValue
(for JDK < 1.4).
- Fix for BUG#1673, where DatabaseMetaData.getColumns() is not
returning correct column ordinal info for non '%' column name patterns.
- Merged fix of datatype mapping from MySQL type 'FLOAT' to
java.sql.Types.REAL from 3.0 branch.
- Detect collation of column for RSMD.isCaseSensitive().
- Fixed sending of queries > 16M.
- Added named and indexed input/output parameter support to CallableStatement.
MySQL-5.0.x or newer.
- Fixed NullPointerException in ServerPreparedStatement.setTimestamp(),
as well as year and month descrepencies in
ServerPreparedStatement.setTimestamp(), setDate().
- Added ability to have multiple database/JVM targets for compliance
and regression/unit tests in build.xml.
- Fixed NPE and year/month bad conversions when accessing some
datetime functionality in ServerPreparedStatements and their
resultant result sets.
- Display where/why a connection was implicitly closed (to
aid debugging).
- CommunicationsException implemented, that tries to determine
why communications was lost with a server, and displays
possible reasons when .getMessage() is called.
- Fixed BUG#2359, NULL values for numeric types in binary
encoded result sets causing NullPointerExceptions.
- Implemented Connection.prepareCall(), and DatabaseMetaData.
getProcedures() and getProcedureColumns().
- Reset 'long binary' parameters in ServerPreparedStatement when
clearParameters() is called, by sending COM_RESET_STMT to the
server.
- Merged prepared statement caching, and .getMetaData() support
from 3.0 branch.
- Fixed off-by-1900 error in some cases for
years in TimeUtil.fastDate/TimeCreate() when unpacking results
from server-side prepared statements.
- Fixed BUG#2502 -- charset conversion issue in getTables().
- Implemented multiple result sets returned from a statement
or stored procedure.
- Fixed BUG#2606 -- Server side prepared statements not returning
datatype 'YEAR' correctly.
- Enabled streaming of result sets from server-side prepared
statements.
- Fixed BUG#2623 -- Class-cast exception when using
scrolling result sets and server-side prepared statements.
- Merged unbuffered input code from 3.0.
- Fixed ConnectionProperties that weren't properly exposed
via accessors, cleaned up ConnectionProperties code.
- Fixed BUG#2671, NULL fields not being encoded correctly in
all cases in server side prepared statements.
- Fixed rare buffer underflow when writing numbers into buffers
for sending prepared statement execution requests.
- Use DocBook version of docs for shipped versions of drivers.
02-18-03 - Version 3.1.0-alpha
- Added 'requireSSL' property.
- Added 'useServerPrepStmts' property (default 'false'). The
driver will use server-side prepared statements when the
server version supports them (4.1 and newer) when this
property is set to 'true'. It is currently set to 'false'
by default until all bind/fetch functionality has been
implemented. Currently only DML prepared statements are
implemented for 4.1 server-side prepared statements.
- Track open Statements, close all when Connection.close()
is called (JDBC compliance).
06-23-05 - Version 3.0.17-ga
- Fixed BUG#5874, Timestamp/Time conversion goes in the wrong 'direction'
when useTimeZone='true' and server timezone differs from client timezone.
- Fixed BUG#7081, DatabaseMetaData.getIndexInfo() ignoring 'unique'
parameter.
- Support new protocol type 'MYSQL_TYPE_VARCHAR'.
- Added 'useOldUTF8Behavoior' configuration property, which causes
JDBC driver to act like it did with MySQL-4.0.x and earlier when
the character encoding is 'utf-8' when connected to MySQL-4.1 or
newer.
- Fixed BUG#7316 - Statements created from a pooled connection were
returning physical connection instead of logical connection when
getConnection() was called.
- Fixed BUG#7033 - PreparedStatements don't encode Big5 (and other
multi-byte) character sets correctly in static SQL strings.
- Fixed BUG#6966, connections starting up failed-over (due to down master)
never retry master.
- Fixed BUG#7061, PreparedStatement.fixDecimalExponent() adding extra
'+', making number unparseable by MySQL server.
- Fixed BUG#7686, Timestamp key column data needed "_binary'" stripped for
UpdatableResultSet.refreshRow().
- Backported SQLState codes mapping from Connector/J 3.1, enable with
'useSqlStateCodes=true' as a connection property, it defaults to
'false' in this release, so that we don't break legacy applications (it
defaults to 'true' starting with Connector/J 3.1).
- Fixed BUG#7601, PreparedStatement.fixDecimalExponent() adding extra
'+', making number unparseable by MySQL server.
- Escape sequence {fn convert(..., type)} now supports ODBC-style types
that are prepended by 'SQL_'.
- Fixed duplicated code in configureClientCharset() that prevented
useOldUTF8Behavior=true from working properly.
- Handle streaming result sets with > 2 billion rows properly by fixing
wraparound of row number counter.
- Fixed BUG#7607 - MS932, SHIFT_JIS and Windows_31J not recog. as
aliases for sjis.
- Fixed BUG#6549 (while fixing #7607), adding 'CP943' to aliases for
sjis.
- Fixed BUG#8064, which requires hex escaping of binary data when using
multi-byte charsets with prepared statements.
- Fixed BUG#8812, NON_UNIQUE column from DBMD.getIndexInfo() returned
inverted value.
- Workaround for server BUG#9098 - default values of CURRENT_* for
DATE/TIME/TIMESTAMP/TIMESTAMP columns can't be distinguished from
'string' values, so UpdatableResultSet.moveToInsertRow() generates
bad SQL for inserting default values.
- Fixed BUG#8629 - 'EUCKR' charset is sent as 'SET NAMES euc_kr' which
MySQL-4.1 and newer doesn't understand.
- DatabaseMetaData.supportsSelectForUpdate() returns correct value based
on server version.
- Use hex escapes for PreparedStatement.setBytes() for double-byte charsets
including 'aliases' Windows-31J, CP934, MS932.
- Added support for the "EUC_JP_Solaris" character encoding, which maps
to a MySQL encoding of "eucjpms" (backported from 3.1 branch). This only
works on servers that support eucjpms, namely 5.0.3 or later.
11-15-04 - Version 3.0.16-ga
- Re-issue character set configuration commands when re-using pooled
connections and/or Connection.changeUser() when connected to MySQL-4.1
or newer.
- Fixed ResultSetMetaData.isReadOnly() to detect non-writable columns
when connected to MySQL-4.1 or newer, based on existence of 'original'
table and column names.
- Fixed BUG#5664, ResultSet.updateByte() when on insert row
throws ArrayOutOfBoundsException.
- Fixed DatabaseMetaData.getTypes() returning incorrect (i.e. non-negative)
scale for the 'NUMERIC' type.
- Fixed BUG#6198, off-by-one bug in Buffer.readString(string).
- Made TINYINT(1) -> BIT/Boolean conversion configurable via 'tinyInt1isBit'
property (default 'true' to be JDBC compliant out of the box).
- Only set 'character_set_results' during connection establishment if
server version >= 4.1.1.
- Fixed regression where useUnbufferedInput was defaulting to 'false'.
- Fixed BUG#6231, ResultSet.getTimestamp() on a column with TIME in it
fails.
09-04-04 - Version 3.0.15-production
- Fixed BUG#4010 - StringUtils.escapeEasternUnicodeByteStream is still
broken for GBK
- Fixed BUG#4334 - Failover for autoReconnect not using port #'s for any
hosts, and not retrying all hosts. (WARN: This required a change to
the SocketFactory connect() method signature, which is now
public Socket connect(String host, int portNumber, Properties props)
therefore any third-party socket factories will have to be changed
to support this signature.
- Logical connections created by MysqlConnectionPoolDataSource will
now issue a rollback() when they are closed and sent back to the pool.
If your application server/connection pool already does this for you, you
can set the 'rollbackOnPooledClose' property to false to avoid the
overhead of an extra rollback().
- Removed redundant calls to checkRowPos() in ResultSet.
- Fixed BUG#4742, 'DOUBLE' mapped twice in DBMD.getTypeInfo().
- Added FLOSS license exemption.
- Fixed BUG#4808, calling .close() twice on a PooledConnection causes NPE.
- Fixed BUG#4138 and BUG#4860, DBMD.getColumns() returns incorrect JDBC
type for unsigned columns. This affects type mappings for all numeric
types in the RSMD.getColumnType() and RSMD.getColumnTypeNames() methods
as well, to ensure that 'like' types from DBMD.getColumns() match up
with what RSMD.getColumnType() and getColumnTypeNames() return.
- 'Production' - 'GA' in naming scheme of distributions.
- Fix for BUG#4880, RSMD.getPrecision() returning 0 for non-numeric types
(should return max length in chars for non-binary types, max length
in bytes for binary types). This fix also fixes mapping of
RSMD.getColumnType() and RSMD.getColumnTypeName() for the BLOB types based
on the length sent from the server (the server doesn't distinguish between
TINYBLOB, BLOB, MEDIUMBLOB or LONGBLOB at the network protocol level).
- Fixed BUG#5022 - ResultSet should release Field[] instance in .close().
- Fixed BUG#5069 -- ResultSet.getMetaData() should not return
incorrectly-initialized metadata if the result set has been closed, but
should instead throw an SQLException. Also fixed for getRow() and
getWarnings() and traversal methods by calling checkClosed() before
operating on instance-level fields that are nullified during .close().
- Parse new timezone variables from 4.1.x servers.
- Use _binary introducer for PreparedStatement.setBytes() and
set*Stream() when connected to MySQL-4.1.x or newer to avoid
misinterpretation during character conversion.
05-28-04 - Version 3.0.14-production
- Fixed URL parsing error
05-27-04 - Version 3.0.13-production
- Fixed BUG#3848 - Using a MySQLDatasource without server name fails
- Fixed BUG#3920 - "No Database Selected" when using
MysqlConnectionPoolDataSource.
- Fixed BUG#3873 - PreparedStatement.getGeneratedKeys() method returns only
1 result for batched insertions
05-18-04 - Version 3.0.12-production
- Add unsigned attribute to DatabaseMetaData.getColumns() output
in the TYPE_NAME column.
- Added 'failOverReadOnly' property, to allow end-user to configure
state of connection (read-only/writable) when failed over.
- Backported 'change user' and 'reset server state' functionality
from 3.1 branch, to allow clients of MysqlConnectionPoolDataSource
to reset server state on getConnection() on a pooled connection.
- Don't escape SJIS/GBK/BIG5 when using MySQL-4.1 or newer.
- Allow 'url' parameter for MysqlDataSource and MysqlConnectionPool
DataSource so that passing of other properties is possible from
inside appservers.
- Map duplicate key and foreign key errors to SQLState of
'23000'.
- Backport documentation tooling from 3.1 branch.
- Return creating statement for ResultSets created by
getGeneratedKeys() (BUG#2957)
- Allow java.util.Date to be sent in as parameter to
PreparedStatement.setObject(), converting it to a Timestamp
to maintain full precision (BUG#3103).
- Don't truncate BLOBs/CLOBs when using setBytes() and/or
setBinary/CharacterStream() (BUG#2670).
- Dynamically configure character set mappings for field-level
character sets on MySQL-4.1.0 and newer using 'SHOW COLLATION'
when connecting.
- Map 'binary' character set to 'US-ASCII' to support DATETIME
charset recognition for servers >= 4.1.2
- Use 'SET character_set_results" during initialization to allow any
charset to be returned to the driver for result sets.
- Use charsetnr returned during connect to encode queries before
issuing 'SET NAMES' on MySQL >= 4.1.0.
- Add helper methods to ResultSetMetaData (getColumnCharacterEncoding()
and getColumnCharacterSet()) to allow end-users to see what charset
the driver thinks it should be using for the column.
- Only set character_set_results for MySQL >= 4.1.0.
- Fixed BUG#3511, StringUtils.escapeSJISByteStream() not covering all
eastern double-byte charsets correctly.
- Renamed StringUtils.escapeSJISByteStream() to more appropriate
escapeEasternUnicodeByteStream().
- Fixed BUG#3554 - Not specifying database in URL caused MalformedURL
exception.
- Auto-convert MySQL encoding names to Java encoding names if used
for characterEncoding property.
- Added encoding names that are recognized on some JVMs to fix case
where they were reverse-mapped to MySQL encoding names incorrectly.
- Use junit.textui.TestRunner for all unit tests (to allow them to be
run from the command line outside of Ant or Eclipse).
- Fixed BUG#3557 - UpdatableResultSet not picking up default values
for moveToInsertRow().
- Fixed BUG#3570 - inconsistent reporting of data type. The server
still doesn't return all types for *BLOBs *TEXT correctly, so the
driver won't return those correctly.
- Fixed BUG#3520 -- DBMD.getSQLStateType() returns incorrect value.
- Fixed regression in PreparedStatement.setString() and eastern character
encodings.
- Made StringRegressionTest 4.1-unicode aware.
02-19-04 - Version 3.0.11-stable
- Trigger a 'SET NAMES utf8' when encoding is forced to 'utf8' _or_
'utf-8' via the 'characterEncoding' property. Previously, only the
Java-style encoding name of 'utf-8' would trigger this.
- AutoReconnect time was growing faster than exponentially (BUG#2447).
- Fixed failover always going to last host in list (BUG#2578)
- Added 'useUnbufferedInput' parameter, and now use it by default
(due to JVM issue
https://developer.java.sun.com/developer/bugParade/bugs/4401235.html)
- Detect 'on/off' or '1','2','3' form of lower_case_table_names on
server.
- Return 'java.lang.Integer' for TINYINT and SMALLINT types from
ResultSetMetaData.getColumnClassName() (fix for BUG#2852).
- Return 'java.lang.Double' for FLOAT type from ResultSetMetaData.
getColumnClassName() (fix for BUG#2855).
- Return '[B' instead of java.lang.Object for BINARY, VARBINARY and
LONGVARBINARY types from ResultSetMetaData.getColumnClassName()
(JDBC compliance).
- Issue connection events on all instances created from a
ConnectionPoolDataSource.
01-13-04 - Version 3.0.10-stable
- Don't count quoted id's when inside a 'string' in PreparedStatement
parsing (fix for BUG#1511).
- 'Friendlier' exception message for PacketTooLargeException
(BUG#1534).
- Backported fix for aliased tables and UpdatableResultSets in
checkUpdatability() method from 3.1 branch.
- Fix for ArrayIndexOutOfBounds exception when using Statement.setMaxRows()
(BUG#1695).
- Fixed BUG#1576, dealing with large blobs and split packets not being
read correctly.
- Fixed regression of Statement.getGeneratedKeys() and REPLACE statements.
- Fixed BUG#1630, subsequent call to ResultSet.updateFoo() causes NPE if
result set is not updatable.
- Fix for 4.1.1-style auth with no password.
- Fix for BUG#1731, Foreign Keys column sequence is not consistent in
DatabaseMetaData.getImported/Exported/CrossReference().
- Fix for BUG#1775 - DatabaseMetaData.getSystemFunction() returning
bad function 'VResultsSion'.
- Fix for BUG#1592 -- cross-database updatable result sets
are not checked for updatability correctly.
- DatabaseMetaData.getColumns() should return Types.LONGVARCHAR for
MySQL LONGTEXT type.
- ResultSet.getObject() on TINYINT and SMALLINT columns should return
Java type 'Integer' (BUG#1913)
- Added 'alwaysClearStream' connection property, which causes the driver
to always empty any remaining data on the input stream before
each query.
- Added more descriptive error message 'Server Configuration Denies
Access to DataSource', as well as retrieval of message from server.
- Autoreconnect code didn't set catalog upon reconnect if it had been
changed.
- Implement ResultSet.updateClob().
- ResultSetMetaData.isCaseSensitive() returned wrong value for CHAR/VARCHAR
columns.
- Fix for BUG#1933 -- Connection property "maxRows" not honored.
- Fix for BUG#1925 -- Statements being created too many times in
DBMD.extractForeignKeyFromCreateTable().
- Fix for BUG#1914 -- Support escape sequence {fn convert ... }
- Fix for BUG#1958 -- ArrayIndexOutOfBounds when parameter number ==
number of parameters + 1.
- Fix for BUG#2006 -- ResultSet.findColumn() should use first matching
column name when there are duplicate column names in SELECT query
(JDBC-compliance).
- Removed static synchronization bottleneck from
PreparedStatement.setTimestamp().
- Removed static synchronization bottleneck from instance factory
method of SingleByteCharsetConverter.
- Enable caching of the parsing stage of prepared statements via
the 'cachePrepStmts', 'prepStmtCacheSize' and 'prepStmtCacheSqlLimit'
properties (disabled by default).
- Speed up parsing of PreparedStatements, try to use one-pass whenever
possible.
- Fixed security exception when used in Applets (applets can't
read the system property 'file.encoding' which is needed
for LOAD DATA LOCAL INFILE).
- Use constants for SQLStates.
- Map charset 'ko18_ru' to 'ko18r' when connected to MySQL-4.1.0 or
newer.
- Ensure that Buffer.writeString() saves room for the \0.
- Fixed exception 'Unknown character set 'danish' on connect w/ JDK-1.4.0
- Fixed mappings in SQLError to report deadlocks with SQLStates of '41000'.
- 'maxRows' property would affect internal statements, so check it for all
statement creation internal to the driver, and set to 0 when it is not.
10-07-03 - Version 3.0.9-stable
- Faster date handling code in ResultSet and PreparedStatement (no longer
uses Date methods that synchronize on static calendars).
- Fixed test for end of buffer in Buffer.readString().
- Fixed ResultSet.previous() behavior to move current
position to before result set when on first row
of result set (bugs.mysql.com BUG#496)
- Fixed Statement and PreparedStatement issuing bogus queries
when setMaxRows() had been used and a LIMIT clause was present
in the query.
- Fixed BUG#661 - refreshRow didn't work when primary key values
contained values that needed to be escaped (they ended up being
doubly-escaped).
- Support InnoDB contraint names when extracting foreign key info
in DatabaseMetaData BUG#517 and BUG#664
(impl. ideas from Parwinder Sekhon)
- Backported 4.1 protocol changes from 3.1 branch (server-side SQL
states, new field info, larger client capability flags,
connect-with-database, and so forth).
- Fix UpdatableResultSet to return values for getXXX() when on
insert row (BUG#675).
- The insertRow in an UpdatableResultSet is now loaded with
the default column values when moveToInsertRow() is called
(BUG#688)
- DatabaseMetaData.getColumns() wasn't returning NULL for
default values that are specified as NULL.
- Change default statement type/concurrency to TYPE_FORWARD_ONLY
and CONCUR_READ_ONLY (spec compliance).
- Don't try and reset isolation level on reconnect if MySQL doesn't
support them.
- Don't wrap SQLExceptions in RowDataDynamic.
- Don't change timestamp TZ twice if useTimezone==true (BUG#774)
- Fixed regression in large split-packet handling (BUG#848).
- Better diagnostic error messages in exceptions for 'streaming'
result sets.
- Issue exception on ResultSet.getXXX() on empty result set (wasn't
caught in some cases).
- Don't hide messages from exceptions thrown in I/O layers.
- Don't fire connection closed events when closing pooled connections, or
on PooledConnection.getConnection() with already open connections (BUG#884).
- Clip +/- INF (to smallest and largest representative values for the type in
MySQL) and NaN (to 0) for setDouble/setFloat(), and issue a warning on the
statement when the server does not support +/- INF or NaN.
- Fix for BUG#879, double-escaping of '\' when charset is SJIS or GBK and '\'
appears in non-escaped input.
- When emptying input stream of unused rows for 'streaming' result sets,
have the current thread yield() every 100 rows in order to not monopolize
CPU time.
- Fixed BUG#1099, DatabaseMetaData.getColumns() getting confused about the
keyword 'set' in character columns.
- Fixed deadlock issue with Statement.setMaxRows().
- Fixed CLOB.truncate(), BUG#1130
- Optimized CLOB.setChracterStream(), BUG#1131
- Made databaseName, portNumber and serverName optional parameters
for MysqlDataSourceFactory (BUG#1246)
- Fix for BUG#1247 -- ResultSet.get/setString mashing char 127
- Backported auth. changes for 4.1.1 and newer from 3.1 branch.
- Added com.mysql.jdbc.util.BaseBugReport to help creation of testcases
for bug reports.
- Added property to 'clobber' streaming results, by setting the
'clobberStreamingResults' property to 'true' (the default is 'false').
This will cause a 'streaming' ResultSet to be automatically
closed, and any oustanding data still streaming from the server to
be discarded if another query is executed before all the data has been
read from the server.
05-23-03 - Version 3.0.8-stable
- Allow bogus URLs in Driver.getPropertyInfo().
- Return list of generated keys when using multi-value INSERTS
with Statement.getGeneratedKeys().
- Use JVM charset with filenames and 'LOAD DATA [LOCAL] INFILE'
- Fix infinite loop with Connection.cleanup().
- Changed Ant target 'compile-core' to 'compile-driver', and
made testsuite compilation a separate target.
- Fixed result set not getting set for Statement.executeUpdate(),
which affected getGeneratedKeys() and getUpdateCount() in
some cases.
- Unicode character 0xFFFF in a string would cause the driver to
throw an ArrayOutOfBoundsException (Bug #378)
- Return correct amount of generated keys when using 'REPLACE'
statements.
- Fix problem detecting server character set in some cases.
- Fix row data decoding error when using _very_ large packets.
- Optimized row data decoding.
- Issue exception when operating on an already-closed
prepared statement.
- Fixed SJIS encoding bug, thanks to Naoto Sato.
- Optimized usage of EscapeProcessor.
- Allow multiple calls to Statement.close()
04-08-03 - Version 3.0.7-stable
- Fixed MysqlPooledConnection.close() calling wrong event type.
- Fixed StringIndexOutOfBoundsException in PreparedStatement.
setClob().
- 4.1 Column Metadata fixes
- Remove synchronization from Driver.connect() and
Driver.acceptsUrl().
- IOExceptions during a transaction now cause the Connection to
be closed.
- Fixed missing conversion for 'YEAR' type in ResultSetMetaData.
getColumnTypeName().
- Don't pick up indexes that start with 'pri' as primary keys
for DBMD.getPrimaryKeys().
- Throw SQLExceptions when trying to do operations on a forcefully
closed Connection (i.e. when a communication link failure occurs).
- You can now toggle profiling on/off using
Connection.setProfileSql(boolean).
- Fixed charset issues with database metadata (charset was not
getting set correctly).
- Updatable ResultSets can now be created for aliased tables/columns
when connected to MySQL-4.1 or newer.
- Fixed 'LOAD DATA LOCAL INFILE' bug when file > max_allowed_packet.
- Fixed escaping of 0x5c ('\') character for GBK and Big5 charsets.
- Fixed ResultSet.getTimestamp() when underlying field is of type DATE.
- Ensure that packet size from alignPacketSize() does not
exceed MAX_ALLOWED_PACKET (JVM bug)
- Don't reset Connection.isReadOnly() when autoReconnecting.
02-18-03 - Version 3.0.6-stable
- Fixed ResultSetMetaData to return "" when catalog not known.
Fixes NullPointerExceptions with Sun's CachedRowSet.
- Fixed DBMD.getTypeInfo() and DBMD.getColumns() returning
different value for precision in TEXT/BLOB types.
- Allow ignoring of warning for 'non transactional tables' during
rollback (compliance/usability) by setting 'ignoreNonTxTables'
property to 'true'.
- Fixed SQLExceptions getting swallowed on initial connect.
- Fixed Statement.setMaxRows() to stop sending 'LIMIT' type queries
when not needed (performance)
- Clean up Statement query/method mismatch tests (i.e. INSERT not
allowed with .executeQuery()).
- More checks added in ResultSet traversal method to catch
when in closed state.
- Fixed ResultSetMetaData.isWritable() to return correct value.
- Add 'window' of different NULL sorting behavior to
DBMD.nullsAreSortedAtStart (4.0.2 to 4.0.10, true, otherwise,
no).
- Implemented Blob.setBytes(). You still need to pass the
resultant Blob back into an updatable ResultSet or
PreparedStatement to persist the changes, as MySQL does
not support 'locators'.
- Backported 4.1 charset field info changes from Connector/J 3.1
01-22-03 - Version 3.0.5-gamma
- Fixed Buffer.fastSkipLenString() causing ArrayIndexOutOfBounds
exceptions with some queries when unpacking fields.
- Implemented an empty TypeMap for Connection.getTypeMap() so that
some third-party apps work with MySQL (IBM WebSphere 5.0 Connection
pool).
- Added missing LONGTEXT type to DBMD.getColumns().
- Retrieve TX_ISOLATION from database for
Connection.getTransactionIsolation() when the MySQL version
supports it, instead of an instance variable.
- Quote table names in DatabaseMetaData.getColumns(),
getPrimaryKeys(), getIndexInfo(), getBestRowIdentifier()
- Greatly reduce memory required for setBinaryStream() in
PreparedStatements.
- Fixed ResultSet.isBeforeFirst() for empty result sets.
- Added update options for foreign key metadata.
01-06-03 - Version 3.0.4-gamma
- Added quoted identifiers to database names for
Connection.setCatalog.
- Added support for quoted identifiers in PreparedStatement
parser.
- Streamlined character conversion and byte[] handling in
PreparedStatements for setByte().
- Reduce memory footprint of PreparedStatements by sharing
outbound packet with MysqlIO.
- Added 'strictUpdates' property to allow control of amount
of checking for 'correctness' of updatable result sets. Set this
to 'false' if you want faster updatable result sets and you know
that you create them from SELECTs on tables with primary keys and
that you have selected all primary keys in your query.
- Added support for 4.0.8-style large packets.
- Fixed PreparedStatement.executeBatch() parameter overwriting.
12-17-02 - Version 3.0.3-dev
- Changed charsToByte in SingleByteCharConverter to be non-static
- Changed SingleByteCharConverter to use lazy initialization of each
converter.
- Fixed charset handling in Fields.java
- Implemented Connection.nativeSQL()
- More robust escape tokenizer -- recognize '--' comments, and allow
nested escape sequences (see testsuite.EscapeProcessingTest)
- DBMD.getImported/ExportedKeys() now handles multiple foreign keys
per table.
- Fixed ResultSetMetaData.getPrecision() returning incorrect values
for some floating point types.
- Fixed ResultSetMetaData.getColumnTypeName() returning BLOB for
TEXT and TEXT for BLOB types.
- Fixed Buffer.isLastDataPacket() for 4.1 and newer servers.
- Added CLIENT_LONG_FLAG to be able to get more column flags
(isAutoIncrement() being the most important)
- Because of above, implemented ResultSetMetaData.isAutoIncrement()
to use Field.isAutoIncrement().
- Honor 'lower_case_table_names' when enabled in the server when
doing table name comparisons in DatabaseMetaData methods.
- Some MySQL-4.1 protocol support (extended field info from selects)
- Use non-aliased table/column names and database names to fullly
qualify tables and columns in UpdatableResultSet (requires
MySQL-4.1 or newer)
- Allow user to alter behavior of Statement/
PreparedStatement.executeBatch() via 'continueBatchOnError' property
(defaults to 'true').
- Check for connection closed in more Connection methods
(createStatement, prepareStatement, setTransactionIsolation,
setAutoCommit).
- More robust implementation of updatable result sets. Checks that
_all_ primary keys of the table have been selected.
- 'LOAD DATA LOCAL INFILE ...' now works, if your server is configured
to allow it. Can be turned off with the 'allowLoadLocalInfile'
property (see the README).
- Substitute '?' for unknown character conversions in single-byte
character sets instead of '\0'.
- NamedPipeSocketFactory now works (only intended for Windows), see
README for instructions.
11-08-02 - Version 3.0.2-dev
- Fixed issue with updatable result sets and PreparedStatements not
working
- Fixed ResultSet.setFetchDirection(FETCH_UNKNOWN)
- Fixed issue when calling Statement.setFetchSize() when using
arbitrary values
- Fixed incorrect conversion in ResultSet.getLong()
- Implemented ResultSet.updateBlob().
- Removed duplicate code from UpdatableResultSet (it can be inherited
from ResultSet, the extra code for each method to handle updatability
I thought might someday be necessary has not been needed).
- Fixed "UnsupportedEncodingException" thrown when "forcing" a
character encoding via properties.
- Fixed various non-ASCII character encoding issues.
- Added driver property 'useHostsInPrivileges'. Defaults to true.
Affects whether or not '@hostname' will be used in
DBMD.getColumn/TablePrivileges.
- All DBMD result set columns describing schemas now return NULL
to be more compliant with the behavior of other JDBC drivers
for other database systems (MySQL does not support schemas).
- Added SSL support. See README for information on how to use it.
- Properly restore connection properties when autoReconnecting
or failing-over, including autoCommit state, and isolation level.
- Use 'SHOW CREATE TABLE' when possible for determining foreign key
information for DatabaseMetaData...also allows cascade options for
DELETE information to be returned
- Escape 0x5c character in strings for the SJIS charset.
- Fixed start position off-by-1 error in Clob.getSubString()
- Implemented Clob.truncate()
- Implemented Clob.setString()
- Implemented Clob.setAsciiStream()
- Implemented Clob.setCharacterStream()
- Added com.mysql.jdbc.MiniAdmin class, which allows you to send
'shutdown' command to MySQL server...Intended to be used when 'embedding'
Java and MySQL server together in an end-user application.
- Added 'connectTimeout' parameter that allows users of JDK-1.4 and newer
to specify a maxium time to wait to establish a connection.
- Failover and autoReconnect only work when the connection is in a
autoCommit(false) state, in order to stay transaction safe
- Added 'queriesBeforeRetryMaster' property that specifies how many
queries to issue when failed over before attempting to reconnect
to the master (defaults to 50)
- Fixed DBMD.supportsResultSetConcurrency() so that it returns true
for ResultSet.TYPE_SCROLL_INSENSITIVE and ResultSet.CONCUR_READ_ONLY or
ResultSet.CONCUR_UPDATABLE
- Fixed ResultSet.isLast() for empty result sets (should return false).
- PreparedStatement now honors stream lengths in setBinary/Ascii/Character
Stream() unless you set the connection property
'useStreamLengthsInPrepStmts' to 'false'.
- Removed some not-needed temporary object creation by using Strings
smarter in EscapeProcessor, Connection and DatabaseMetaData classes.
09-21-02 - Version 3.0.1-dev
- Fixed ResultSet.getRow() off-by-one bug.
- Fixed RowDataStatic.getAt() off-by-one bug.
- Added limited Clob functionality (ResultSet.getClob(),
PreparedStatemtent.setClob(),
PreparedStatement.setObject(Clob).
- Added socketTimeout parameter to URL.
- Connection.isClosed() no longer "pings" the server.
- Connection.close() issues rollback() when getAutoCommit() == false
- Added "paranoid" parameter...sanitizes error messages removing
"sensitive" information from them (such as hostnames, ports, or
usernames), as well as clearing "sensitive" data structures
when possible.
- Fixed ResultSetMetaData.isSigned() for TINYINT and BIGINT.
- Charsets now automatically detected. Optimized code for single-byte
character set conversion.
- Implemented ResultSet.getCharacterStream()
- Added "LOCAL TEMPORARY" to table types in DatabaseMetaData.getTableTypes()
- Massive code clean-up to follow Java coding conventions (the time had come)
07-31-02 - Version 3.0.0-dev
- !!! LICENSE CHANGE !!! The driver is now GPL. If you need
non-GPL licenses, please contact me <[email protected]>
- JDBC-3.0 functionality including
Statement/PreparedStatement.getGeneratedKeys() and
ResultSet.getURL()
- Performance enchancements - driver is now 50-100% faster
in most situations, and creates fewer temporary objects
- Repackaging...new driver name is "com.mysql.jdbc.Driver",
old name still works, though (the driver is now provided
by MySQL-AB)
- Better checking for closed connections in Statement
and PreparedStatement.
- Support for streaming (row-by-row) result sets (see README)
Thanks to Doron.
- Support for large packets (new addition to MySQL-4.0 protocol),
see README for more information.
- JDBC Compliance -- Passes all tests besides stored procedure tests
- Fix and sort primary key names in DBMetaData (SF bugs 582086 and 582086)
- Float types now reported as java.sql.Types.FLOAT (SF bug 579573)
- ResultSet.getTimestamp() now works for DATE types (SF bug 559134)
- ResultSet.getDate/Time/Timestamp now recognizes all forms of invalid
values that have been set to all zeroes by MySQL (SF bug 586058)
- Testsuite now uses Junit (which you can get from www.junit.org)
- The driver now only works with JDK-1.2 or newer.
- Added multi-host failover support (see README)
- General source-code cleanup.
- Overall speed improvements via controlling transient object
creation in MysqlIO class when reading packets
- Performance improvements in string handling and field
metadata creation (lazily instantiated) contributed by
Alex Twisleton-Wykeham-Fiennes
05-16-02 - Version 2.0.14
- More code cleanup
- PreparedStatement now releases resources on .close() (SF bug 553268)
- Quoted identifiers not used if server version does not support them. Also,
if server started with --ansi or --sql-mode=ANSI_QUOTES then '"' will be
used as an identifier quote, otherwise '`' will be used.
- ResultSet.getDouble() now uses code built into JDK to be more precise (but slower)
- LogicalHandle.isClosed() calls through to physical connection
- Added SQL profiling (to STDERR). Set "profileSql=true" in your JDBC url.
See README for more information.
- Fixed typo for relaxAutoCommit parameter.
04-24-02 - Version 2.0.13
- More code cleanup.
- Fixed unicode chars being read incorrectly (SF bug 541088)
- Faster blob escaping for PrepStmt
- Added set/getPortNumber() to DataSource(s) (SF bug 548167)
- Added setURL() to MySQLXADataSource (SF bug 546019)
- PreparedStatement.toString() fixed (SF bug 534026)
- ResultSetMetaData.getColumnClassName() now implemented
- Rudimentary version of Statement.getGeneratedKeys() from JDBC-3.0
now implemented (you need to be using JDK-1.4 for this to work, I
believe)
- DBMetaData.getIndexInfo() - bad PAGES fixed (SF BUG 542201)
04-07-02 - Version 2.0.12
- General code cleanup.
- Added getIdleFor() method to Connection and MysqlLogicalHandle.
- Relaxed synchronization in all classes, should fix 520615 and 520393.
- Added getTable/ColumnPrivileges() to DBMD (fixes 484502).
- Added new types to getTypeInfo(), fixed existing types thanks to
Al Davis and Kid Kalanon.
- Added support for BIT types (51870) to PreparedStatement.
- Fixed getRow() bug (527165) in ResultSet
- Fixes for ResultSet updatability in PreparedStatement.
- Fixed timezone off by 1-hour bug in PreparedStatement (538286, 528785).
- ResultSet: Fixed updatability (values being set to null
if not updated).
- DataSources - fixed setUrl bug (511614, 525565),
wrong datasource class name (532816, 528767)
- Added identifier quoting to all DatabaseMetaData methods
that need them (should fix 518108)
- Added support for YEAR type (533556)
- ResultSet.insertRow() should now detect auto_increment fields
in most cases and use that value in the new row. This detection
will not work in multi-valued keys, however, due to the fact that
the MySQL protocol does not return this information.
- ResultSet.refreshRow() implemented.
- Fixed testsuite.Traversal afterLast() bug, thanks to Igor Lastric.
01-27-02 - Version 2.0.11
- Fixed missing DELETE_RULE value in
DBMD.getImported/ExportedKeys() and getCrossReference().
- Full synchronization of Statement.java.
- More changes to fix "Unexpected end of input stream"
errors when reading BLOBs. This should be the last fix.
01-24-02 - Version 2.0.10
- Fixed spurious "Unexpected end of input stream" errors in
MysqlIO (bug 507456).
- Fixed null-pointer-exceptions when using
MysqlConnectionPoolDataSource with Websphere 4 (bug 505839).
01-13-02 - Version 2.0.9
- Ant build was corrupting included jar files, fixed
(bug 487669).
- Fixed extra memory allocation in MysqlIO.readPacket()
(bug 488663).
- Implementation of DatabaseMetaData.getExported/ImportedKeys() and
getCrossReference().
- Full synchronization on methods modifying instance and class-shared
references, driver should be entirely thread-safe now (please
let me know if you have problems)
- DataSource implementations moved to org.gjt.mm.mysql.jdbc2.optional
package, and (initial) implementations of PooledConnectionDataSource
and XADataSource are in place (thanks to Todd Wolff for the
implementation and testing of PooledConnectionDataSource with
IBM WebSphere 4).
- Added detection of network connection being closed when reading packets
(thanks to Todd Lizambri).
- Fixed quoting error with escape processor (bug 486265).
- Report batch update support through DatabaseMetaData (bug 495101).
- Fixed off-by-one-hour error in PreparedStatement.setTimestamp()
(bug 491577).
- Removed concatenation support from driver (the '||' operator),
as older versions of VisualAge seem to be the only thing that
use it, and it conflicts with the logical '||' operator. You will
need to start mysqld with the "--ansi" flag to use the '||'
operator as concatenation (bug 491680)
- Fixed casting bug in PreparedStatement (bug 488663).
11-25-01 - Version 2.0.8
- Batch updates now supported (thanks to some inspiration
from Daniel Rall).
- XADataSource/ConnectionPoolDataSource code (experimental)
- PreparedStatement.setAnyNumericType() now handles positive
exponents correctly (adds "+" so MySQL can understand it).
- DatabaseMetaData.getPrimaryKeys() and getBestRowIdentifier()
are now more robust in identifying primary keys (matches
regardless of case or abbreviation/full spelling of Primary Key
in Key_type column).
10-24-01 - Version 2.0.7
- PreparedStatement.setCharacterStream() now implemented
- Fixed dangling socket problem when in high availability
(autoReconnect=true) mode, and finalizer for Connection will
close any dangling sockets on GC.
- Fixed ResultSetMetaData.getPrecision() returning one
less than actual on newer versions of MySQL.
- ResultSet.getBlob() now returns null if column value
was null.
- Character sets read from database if useUnicode=true
and characterEncoding is not set. (thanks to
Dmitry Vereshchagin)
- Initial transaction isolation level read from
database (if avaialable) (thanks to Dmitry Vereshchagin)
- Fixed DatabaseMetaData.supportsTransactions(), and
supportsTransactionIsolationLevel() and getTypeInfo()
SQL_DATETIME_SUB and SQL_DATA_TYPE fields not being
readable.
- Fixed PreparedStatement generating SQL that would end
up with syntax errors for some queries.
- Fixed ResultSet.isAfterLast() always returning false.
- Fixed timezone issue in PreparedStatement.setTimestamp()
(thanks to Erik Olofsson)
- Captialize type names when "captializeTypeNames=true"
is passed in URL or properties (for WebObjects, thanks
to Anjo Krank)
- Updatable result sets now correctly handle NULL
values in fields.
- PreparedStatement.setDouble() now uses full-precision
doubles (reverting a fix made earlier to truncate them).
- PreparedStatement.setBoolean() will use 1/0 for values
if your MySQL version is 3.21.23 or higher.
06-16-01 - Version 2.0.6
- Fixed PreparedStatement parameter checking
- Fixed case-sensitive column names in ResultSet.java
06-13-01 - Version 2.0.5
- Fixed ResultSet.getBlob() ArrayIndex out-of-bounds
- Fixed ResultSetMetaData.getColumnTypeName for TEXT/BLOB
- Fixed ArrayIndexOutOfBounds when sending large BLOB queries
(Max size packet was not being set)
- Added ISOLATION level support to Connection.setIsolationLevel()
- Fixed NPE on PreparedStatement.executeUpdate() when all columns
have not been set.
- Fixed data parsing of TIMESTAMPs with 2-digit years
- Added Byte to PreparedStatement.setObject()
- ResultSet.getBoolean() now recognizes '-1' as 'true'
- ResultSet has +/-Inf/inf support
- ResultSet.insertRow() works now, even if not all columns are
set (they will be set to "NULL")
- DataBaseMetaData.getCrossReference() no longer ArrayIndexOOB
- getObject() on ResultSet correctly does TINYINT->Byte and
SMALLINT->Short
12-03-00 - Version 2.0.3
- Implemented getBigDecimal() without scale component
for JDBC2.
- Fixed composite key problem with updatable result sets.
- Added detection of -/+INF for doubles.
- Faster ASCII string operations.
- Fixed incorrect detection of MAX_ALLOWED_PACKET, so sending
large blobs should work now.
- Fixed off-by-one error in java.sql.Blob implementation code.
- Added "ultraDevHack" URL parameter, set to "true" to allow
(broken) Macromedia UltraDev to use the driver.
04-06-00 - Version 2.0.1
- Fixed RSMD.isWritable() returning wrong value.
Thanks to Moritz Maass.
- Cleaned up exception handling when driver connects
- Columns that are of type TEXT now return as Strings
when you use getObject()
- DatabaseMetaData.getPrimaryKeys() now works correctly wrt
to key_seq. Thanks to Brian Slesinsky.
- No escape processing is done on PreparedStatements anymore
per JDBC spec.
- Fixed many JDBC-2.0 traversal, positioning bugs, especially
wrt to empty result sets. Thanks to Ron Smits, Nick Brook,
Cessar Garcia and Carlos Martinez.
- Fixed some issues with updatability support in ResultSet when
using multiple primary keys.
02-21-00 - Version 2.0pre5
- Fixed Bad Handshake problem.
01-10-00 - Version 2.0pre4
- Fixes to ResultSet for insertRow() - Thanks to
Cesar Garcia
- Fix to Driver to recognize JDBC-2.0 by loading a JDBC-2.0
class, instead of relying on JDK version numbers. Thanks
to John Baker.
- Fixed ResultSet to return correct row numbers
- Statement.getUpdateCount() now returns rows matched,
instead of rows actually updated, which is more SQL-92
like.
10-29-99
- Statement/PreparedStatement.getMoreResults() bug fixed.
Thanks to Noel J. Bergman.
- Added Short as a type to PreparedStatement.setObject().
Thanks to Jeff Crowder
- Driver now automagically configures maximum/preferred packet
sizes by querying server.
- Autoreconnect code uses fast ping command if server supports
it.
- Fixed various bugs wrt. to packet sizing when reading from
the server and when alloc'ing to write to the server.
08-17-99 - Version 2.0pre
- Now compiles under JDK-1.2. The driver supports both JDK-1.1
and JDK-1.2 at the same time through a core set of classes.
The driver will load the appropriate interface classes at
runtime by figuring out which JVM version you are using.
- Fixes for result sets with all nulls in the first row.
(Pointed out by Tim Endres)
- Fixes to column numbers in SQLExceptions in ResultSet
(Thanks to Blas Rodriguez Somoza)
- The database no longer needs to specified to connect.
(Thanks to Christian Motschke)
07-04-99 - Version 1.2b
- Better Documentation (in progress), in doc/mm.doc/book1.html
- DBMD now allows null for a column name pattern (not in
spec), which it changes to '%'.
- DBMD now has correct types/lengths for getXXX().
- ResultSet.getDate(), getTime(), and getTimestamp() fixes.
(contributed by Alan Wilken)
- EscapeProcessor now handles \{ \} and { or } inside quotes
correctly. (thanks to Alik for some ideas on how to fix it)
- Fixes to properties handling in Connection.
(contributed by Juho Tikkala)
- ResultSet.getObject() now returns null for NULL columns
in the table, rather than bombing out.
(thanks to Ben Grosman)
- ResultSet.getObject() now returns Strings for types
from MySQL that it doesn't know about. (Suggested by
Chris Perdue)
- Removed DataInput/Output streams, not needed, 1/2 number
of method calls per IO operation.
- Use default character encoding if one is not specified. This
is a work-around for broken JVMs, because according to spec,
EVERY JVM must support "ISO8859_1", but they don't.
- Fixed Connection to use the platform character encoding
instead of "ISO8859_1" if one isn't explicitly set. This
fixes problems people were having loading the character-
converter classes that didn't always exist (JVM bug).
(thanks to Fritz Elfert for pointing out this problem)
- Changed MysqlIO to re-use packets where possible to reduce
memory usage.
- Fixed escape-processor bugs pertaining to {} inside
quotes.
04-14-99 - Version 1.2a
- Fixed character-set support for non-Javasoft JVMs
(thanks to many people for pointing it out)
- Fixed ResultSet.getBoolean() to recognize 'y' & 'n'
as well as '1' & '0' as boolean flags.
(thanks to Tim Pizey)
- Fixed ResultSet.getTimestamp() to give better performance.
(thanks to Richard Swift)
- Fixed getByte() for numeric types.
(thanks to Ray Bellis)
- Fixed DatabaseMetaData.getTypeInfo() for DATE type.
(thanks to Paul Johnston)
- Fixed EscapeProcessor for "fn" calls.
(thanks to Piyush Shah at locomotive.org)
- Fixed EscapeProcessor to not do extraneous work if there
are no escape codes.
(thanks to Ryan Gustafson)
- Fixed Driver to parse URLs of the form "jdbc:mysql://host:port"
(thanks to Richard Lobb)
03-24-99 - Version 1.1i
- Fixed Timestamps for PreparedStatements
- Fixed null pointer exceptions in RSMD and RS
- Re-compiled with jikes for valid class files (thanks ms!)
03-08-99 - Version 1.1h
- Fixed escape processor to deal with un-matched { and }
(thanks to Craig Coles)
- Fixed escape processor to create more portable (between
DATETIME and TIMESTAMP types) representations so that
it will work with BETWEEN clauses.
(thanks to Craig Longman)
- MysqlIO.quit() now closes the socket connection. Before,
after many failed connections some OS's would run out
of file descriptors. (thanks to Michael Brinkman)
- Fixed NullPointerException in Driver.getPropertyInfo.
(thanks to Dave Potts)
- Fixes to MysqlDefs to allow all *text fields to be
retrieved as Strings.
(thanks to Chris at Leverage)
- Fixed setDouble in PreparedStatement for large numbers
to avoid sending scientific notation to the database.
(thanks to J.S. Ferguson)
- Fixed getScale() and getPrecision() in RSMD.
(contrib'd by James Klicman)
- Fixed getObject() when field was DECIMAL or NUMERIC
(thanks to Bert Hobbs)
- DBMD.getTables() bombed when passed a null table-name
pattern. Fixed. (thanks to Richard Lobb)
- Added check for "client not authorized" errors during
connect. (thanks to Hannes Wallnoefer)
02-19-99 - Version 1.1g
- Result set rows are now byte arrays. Blobs and Unicode
work bidriectonally now. The useUnicode and encoding
options are implemented now.
- Fixes to PreparedStatement to send binary set by
setXXXStream to be sent un-touched to the MySQL server.
- Fixes to getDriverPropertyInfo().
12-31-98 - Version 1.1f
- Changed all ResultSet fields to Strings, this should allow
Unicode to work, but your JVM must be able to convert
between the character sets. This should also make reading
data from the server be a bit quicker, because there is now
no conversion from StringBuffer to String.
- Changed PreparedStatement.streamToString() to be more
efficient (code from Uwe Schaefer).
- URL parsing is more robust (throws SQL exceptions on errors
rather than NullPointerExceptions)
- PreparedStatement now can convert Strings to Time/Date values
via setObject() (code from Robert Currey).
- IO no longer hangs in Buffer.readInt(), that bug was
introduced in 1.1d when changing to all byte-arrays for
result sets. (Pointed out by Samo Login)
11-03-98 - Version 1.1b
- Fixes to DatabaseMetaData to allow both IBM VA and J-Builder
to work. Let me know how it goes. (thanks to Jac Kersing)
- Fix to ResultSet.getBoolean() for NULL strings
(thanks to Barry Lagerweij)
- Beginning of code cleanup, and formatting. Getting ready
to branch this off to a parallel JDBC-2.0 source tree.
- Added "final" modifier to critical sections in MysqlIO and
Buffer to allow compiler to inline methods for speed.
9-29-98
- If object references passed to setXXX() in PreparedStatement are
null, setNull() is automatically called for you. (Thanks for the
suggestion goes to Erik Ostrom)
- setObject() in PreparedStatement will now attempt to write a
serialized representation of the object to the database for
objects of Types.OTHER and objects of unknown type.
- Util now has a static method readObject() which given a ResultSet
and a column index will re-instantiate an object serialized in
the above manner.
9-02-98 - Vesion 1.1
- Got rid of "ugly hack" in MysqlIO.nextRow(). Rather than
catch an exception, Buffer.isLastDataPacket() was fixed.
- Connection.getCatalog() and Connection.setCatalog()
should work now.
- Statement.setMaxRows() works, as well as setting
by property maxRows. Statement.setMaxRows() overrides
maxRows set via properties or url parameters.
- Automatic re-connection is available. Because it has
to "ping" the database before each query, it is
turned off by default. To use it, pass in "autoReconnect=true"
in the connection URL. You may also change the number of
reconnect tries, and the initial timeout value via
"maxReconnects=n" (default 3) and "initialTimeout=n"
(seconds, default 2) parameters. The timeout is an
exponential backoff type of timeout, e.g. if you have initial
timeout of 2 seconds, and maxReconnects of 3, then the driver
will timeout 2 seconds, 4 seconds, then 16 seconds between each
re-connection attempt.
8-24-98 - Version 1.0
- Fixed handling of blob data in Buffer.java
- Fixed bug with authentication packet being
sized too small.
- The JDBC Driver is now under the LPGL
8-14-98 -
- Fixed Buffer.readLenString() to correctly
read data for BLOBS.
- Fixed PreparedStatement.stringToStream to
correctly read data for BLOBS.
- Fixed PreparedStatement.setDate() to not
add a day.
(above fixes thanks to Vincent Partington)
- Added URL parameter parsing (?user=... and so forth).
8-04-98 - Version 0.9d
- Big news! New package name. Tim Endres from ICE
Engineering is starting a new source tree for
GNU GPL'd Java software. He's graciously given
me the org.gjt.mm package directory to use, so now
the driver is in the org.gjt.mm.mysql package scheme.
I'm "legal" now. Look for more information on Tim's
project soon.
- Now using dynamically sized packets to reduce
memory usage when sending commands to the DB.
- Small fixes to getTypeInfo() for parameters, and so forth.
- DatabaseMetaData is now fully implemented. Let me
know if these drivers work with the various IDEs
out there. I've heard that they're working with
JBuilder right now.
- Added JavaDoc documentation to the package.
- Package now available in .zip or .tar.gz.
7-28-98 - Version 0.9
- Implemented getTypeInfo().
Connection.rollback() now throws an SQLException
per the JDBC spec.
- Added PreparedStatement that supports all JDBC API
methods for PreparedStatement including InputStreams.
Please check this out and let me know if anything is
broken.
- Fixed a bug in ResultSet that would break some
queries that only returned 1 row.
- Fixed bugs in DatabaseMetaData.getTables(),
DatabaseMetaData.getColumns() and
DatabaseMetaData.getCatalogs().
- Added functionality to Statement that allows
executeUpdate() to store values for IDs that are
automatically generated for AUTO_INCREMENT fields.
Basically, after an executeUpdate(), look at the
SQLWarnings for warnings like "LAST_INSERTED_ID =
'some number', COMMAND = 'your SQL query'".
If you are using AUTO_INCREMENT fields in your
tables and are executing a lot of executeUpdate()s
on one Statement, be sure to clearWarnings() every
so often to save memory.
7-06-98 - Version 0.8
- Split MysqlIO and Buffer to separate classes. Some
ClassLoaders gave an IllegalAccess error for some
fields in those two classes. Now mm.mysql works in
applets and all classloaders.
Thanks to Joe Ennis <[email protected]> for pointing
out the problem and working on a fix with me.
7-01-98 - Version 0.7
- Fixed DatabaseMetadata problems in getColumns() and
bug in switch statement in the Field constructor.
Thanks to Costin Manolache <[email protected]> for
pointing these out.
5-21-98 - Version 0.6
- Incorporated efficiency changes from
Richard Swift <[email protected]> in
MysqlIO.java and ResultSet.java
- We're now 15% faster than gwe's driver.
- Started working on DatabaseMetaData.
The following methods are implemented:
* getTables()
* getTableTypes()
* getColumns
* getCatalogs()
