MySQL Connector/J 5.1.37 has been released

[Jocelyn Ramilison]

Hello all,

MySQL Connector Java 5.1.37, a maintenance release of the production 5.1
branch, has been released. Connector/J is a Type-IV pure-Java JDBC
driver for MySQL. It is suitable for use with MySQL server versions 5.5,
5.6, and 5.7. It is also the first release of MySQL Connector/J to support
the Java Database Connectivity (JDBC) 4.2 API.

MySQL Connector Java is available in source and binary form from the
Connector/J download pages at
http://dev.mysql.com/downloads/connector/j/5.1.html

MySQL Connector Java (Commercial) is available for download on the My
Oracle Support (MOS) website. This release will be available on
eDelivery (OSDC) in next month's upload cycle.

As always, we recommend that you check the "CHANGES" file in the
download archive to be aware of changes in behavior that might affect
your application.

MySQL Connector/J 5.1.37 includes the following general bug fixes and
improvements, also available in more detail on
http://dev.mysql.com/doc/relnotes/connector-j/en/news-5-1-37.html :

Changes in MySQL Connector/J 5.1.37 (2015-10-15)

Functionality Added or Changed

* Connector/J now supports the JSON data type, which has
been supported by the MySQL server since release 5.7.8.

* methodCompressedInputStream.getNextPacketFromServer() has
been refactored to reduce memory use and garbage
collection efforts caused by the use of the inflater.
(Bug #21648826, Bug #78106)

* The code for executing a REPLACE statement when
rewriteBatchedStatements=true has been refactored by
putting multiple batched statements into a single query,
making it work more like an INSERT statement. This
increases the efficiency for running REPLACE statements.
Thanks to Jie Han for contributing the code. (Bug
#21429909, Bug #77681)

* A new connection property,
truncateFractionalSeconds=true|false, has been
introduced. It controls whether fractional seconds in
timestamps are to be truncated on the client side or to
be sent to the server side for truncation there. See the
entry for the new property in Driver/Datasource Class
Names, URL Syntax and Configuration Properties for
Connector/J
(http://dev.mysql.com/doc/connector-j/en/connector-j-refe
rence-configuration-properties.html) for details. Thanks
to Kwon Nam Son for contributing the code. (Bug
#21304726, Bug #77449)

* A new connection property, enableEscapeProcessing, has
been introduced for supporting JDBC 4.2. It sets the
default escape processing behavior for Statement objects.
See the entry for the new property in Driver/Datasource
Class Names, URL Syntax and Configuration Properties for
Connector/J
(http://dev.mysql.com/doc/connector-j/en/connector-j-refe
rence-configuration-properties.html) for details.

Bugs Fixed

* A ClassCastException resulted for a Fabric connection
when rewriteBatchedStatements was "true" and a batch
update was rewritten. (Bug #21876798)

* A number of regression tests in the testsuite failed when
they were run against MySQL 5.7, because the
NO_AUTO_CREATE_USER SQL mode had become the default
behavior of the server since MySQL 5.7.7, making some
GRANT statements in the test fail when a new user had to
be created. With this fix, CREATE USER statements have
been added to the regressions tests when needed, to
prevent the test failures. (Bug #21697684, Bug #78225)

* Connecting to MySQL 5.0 and 5.1 using Connector/J 5.1.36
resulted in an SQLException, with a complaint for an
"Unknown system variable 'language'". (Bug #21415165, Bug
#77665)

* The IS_GENERATEDCOLUMN field was empty in the result
returned by DatabaseMetaData.getColumns(). This fix
corrects the field so that it contains a YES or NO
according to whether the column is generated or not. (Bug
#20969312, Bug #76859)

* getTypeInfo() returned an incorrect PRECISION value of
"255" for the data type of VARCHAR. The return value has
been corrected to "65535." (Bug #20675539, Bug #76187)

* When a connection is forcefully closed with
abortInternal() in the ConnectionImpl class, a null point
exception sometimes resulted. This is now avoided by
putting the associated this.io.releaseResources() call
inside a try block, so that the exception, unavoidable
due to a race condition, can be properly caught and
ignored. (Bug #20536592, Bug #75849)

* If the MySQL server's default authentication method was
SHA256 but neither one of the Connector/J connection
properties allowPublicKeyRetrieval and
serverRSAPublicKeyFile was set, the authentication failed
with a TransientConnectionException, complaining that the
public key could not be retrieved. With this fix,
authentication continues in the situation, allowing other
enabled authentication methods to be tried. (Bug
#20433047, Bug #75670)

* When a lock wait timeout occurred, an SQLException was
thrown while an SQLTransientException should be thrown
instead. It was due to a wrong SQLState number used in
the code, which has now been fixed. (Bug #16634180)

* When the time zone on the MySQL server was configured to
"GMT" but the client was in a different time zone,
Connector/J would make wrong adjustments for event
timestamps when working with the server. (Bug #11758179,
Bug #50348)

Documentation
--------------
Online: http://dev.mysql.com/doc/connector-j/en/index.html

Reporting Bugs
---------------
We welcome and appreciate your feedback and bug reports:
http://bugs.mysql.com/

On Behalf of the MySQL/ORACLE RE Team
Hery Ramilison