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List:       mysql
Subject:    MySQL Connector/C++ 8.0.12 has been released
From:       Balasubramanian Kandasamy <balasubramanian.kandasamy () oracle ! com>
Date:       2018-07-27 17:30:13
Message-ID: fb982583-b0d1-ef5e-297f-bac5fdd02be0 () oracle ! com
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Dear MySQL users,

MySQL Connector/C++ 8.0.12 is the second GA release version of the MySQL
Connector/C++ 8.0 series.

Connector/C++ 8.0 can be used to access MySQL implementing Document
Store or in a traditional way, using SQL queries. It allows writing
both C++ and plain C applications using X DevAPI and X DevAPI for C.
It also supports the legacy API of Connector/C++ 1.1 based on JDBC4.

To learn more about how to write applications using X DevAPI, see "X
DevAPI User Guide"

https://dev.mysql.com/doc/x-devapi-userguide/en/

See also "X DevAPI Reference" at

https://dev.mysql.com/doc/dev/connector-cpp/devapi_ref.html

and "X DevAPI for C Reference" at

https://dev.mysql.com/doc/dev/connector-cpp/xapi_ref.html

For generic information on using Connector/C++ 8.0, see

https://dev.mysql.com/doc/dev/connector-cpp/

Note: For X DevAPI applications, Connector/C++ 8.0 requires
MySQL Server 5.7.12 or higher with X Plugin enabled. For applications
that use the legacy JDBC API, Connector/C++ 8.0 can use MySQL Server 5.5
or higher, and X Plugin is not required.

https://dev.mysql.com/doc/refman/5.7/en/document-store.html

To download MySQL Connector/C++ 8.0.12, see the "Generally Available (GA)
Releases" tab at

https://dev.mysql.com/downloads/connector/cpp/


Changes in MySQL Connector/C++ 8.0.12 (2018-07-27, General Availability)

      * Installation Notes

      * Packaging Notes

      * Security Notes

      * X DevAPI Notes

      * Bugs Fixed

Installation Notes


      * Because the Microsoft Visual C++ 2017 Redistributable
        installer deletes the Microsoft Visual C++ 2015
        Redistributable registry keys that identify its
        installation, standalone MySQL MSIs may fail to detect
        the Microsoft Visual C++ 2015 Redistributable if both it
        and the Microsoft Visual C++ 2017 Redistributable are
        installed. The solution is to repair the Microsoft Visual
        C++ 2017 Redistributable via the Windows Control Panel to
        recreate the registry keys needed for the runtime
        detection. Unlike the standalone MSIs, MySQL Installer
        for Windows contains a workaround for the detection
        problem.

Packaging Notes


      * An RPM package for installing ARM 64-bit (aarch64)
        binaries of Connector/C++ on Oracle Linux 7 is now
        available in the MySQL Yum Repository and for direct
        download.
        Known Limitation for this ARM release: You must enable
        the Oracle Linux 7 Software Collections Repository
        (ol7_software_collections) to install this package, and
        must also adjust the libstdc++7 path. See Yum's Platform
        Specific Notes
(http://dev.mysql.com/doc/refman/8.0/en/linux-installation-yum-repo.html#yum-install-platform-specifics)
  for additional details.

      * Installers for Connector/C++ are now available in these
        formats: MSI packages (Windows); RPM packages (Linux);
        DMG packages (macOS).

Security Notes


      * yaSSL is no longer included in Connector/C++ source
        distributions. wolfSSL may be used as a functionally
        equivalent alternative that has a GPLv2-compatible
        license. In addition, wolfSSL (like OpenSSL) supports the
        TLSv1.2 protocol, which yaSSL does not.
        To build Connector/C++ using wolfSSL, use the
        -DWITH_SSL=path_name CMake option, where path_name
        indicates the location of the wolfSSL sources. For more
        information, see Source Installation System Prerequisites
(http://dev.mysql.com/doc/connector-cpp/8.0/en/connector-cpp-installation-source-prerequisites.html),
  and Connector/C++ Source-Configuration Options
(http://dev.mysql.com/doc/connector-cpp/8.0/en/connector-cpp-source-configuration-options.html).


X DevAPI Notes


      * Connector/C++ now supports NOWAIT and SKIP LOCKED lock
        contention modes to be used with lockExclusive() and
        lockShared() clauses of CRUD find/select operations (see
        Locking Read Concurrency with NOWAIT and SKIP LOCKED
(http://dev.mysql.com/doc/refman/8.0/en/innodb-locking-reads.html#innodb-locking-reads-nowait-skip-locked)),
  and a default lock contention mode. The following list names
        the permitted constants. For each item, the first and
        second constants apply to X DevAPI and X DevAPI for C,
        respectively.

           + LockContention::DEFAULT, LOCK_CONTENTION_DEFAULT:
             Block the query until existing row locks are
             released.

           + LockContention::NOWAIT, LOCK_CONTENTION_NOWAIT:
             Return an error if the lock cannot be obtained
             immediately.

           + LockContention::SKIP_LOCKED,
             LOCK_CONTENTION_SKIP_LOCKED: Execute the query
             immediately, excluding from the query items that are
             locked.
        For X DevAPI and X DevAPI for C applications, lock mode
        methods accept these lock contention constants as a
        parameter. For X DevAPI applications, lock mode methods
        can be called without this parameter, as before; this is
        equivalent to passing a lock mode of DEFAULT.

      * Connector/C++ now supports the SHA256_MEMORY
        authentication mechanism for connections using the X
        Protocol. For X DevAPI applications, SessionOption::AUTH
        supports the new value AuthMethod::SHA256_MEMORY. For X
        DevAPI for C applications, the session option
        MYSQLX_OPT_AUTH supports the new value
        MYSQLX_AUTH_SHA256_MEMORY. These new values request using
        the sha256_memory authentication mechanism when creating
        a session.

      * For compliance with the Core DevAPI, these Connector/C++
        changes were made:

           + getAffectedItemsCount() was moved from Result to
             Result_common.

           + Collection.modify(condition).arrayDelete() was
             removed.

           + getAffectedRowsCount() was removed. Use
             getAffectedItemsCount() instead.

           + getWarningCount() was renamed to getWarningsCount().

Bugs Fixed


      * utf8mb4 character data was handled incorrectly. (Bug
        #28240202)

      * Session creation had a memory leak. (Bug #27917942)

      * When configuring to build Connector/C++ with the legacy
        connector, CMake did not account for the
        MYSQL_CONFIG_EXECUTABLE option. (Bug #27874173, Bug
        #90389)

      * Improper error handling for unknown hosts when creating a
        session could result in unexpected application exit. (Bug
        #27868302)

      * The mysqlx_row_fetch_one() X DevAPI for C function could
        fail to return for large result set exceeding the maximum
        packet size. Now such result sets produce an error. (Bug
        #27732224)

Enjoy and thanks for the support!

On Behalf of Oracle/MySQL Release Engineering Team,Balasubramanian Kandasamy



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