[ANN] QxOrm 1.3.1 QxEntityEditor 1.1.7 released

[QxOrm contact]

Hello,

*QxOrm 1.3.1* (C++ Qt Object Relational Mapping library) and *QxEntityEditor
1.1.7* (the graphic editor) just released ! http://www.qxorm.com/

Changes in version *QxOrm 1.3.1*:





* * New class qx::QxModelServiceT, S
http://www.qxorm.com/doxygen/html/classqx_1_1_qx_model_service.html in
QxModelView module
http://www.qxorm.com/doxygen/html/group___qx_model_view.html to connect a
Qt model to services to execute client-server requests (can be used with
QML and QtWidgets views) * Add some useful methods to qx::IxModel
http://www.qxorm.com/doxygen/html/classqx_1_1_ix_model.html class and fix
several issues with the QxModelView module * Support last version of MinGW
with large precompiled header bug : new compilation option
_QX_NO_PRECOMPILED_HEADER (to enable in QxOrm.pri config file) * Fix issue
when loading several shared libraries on Windows with services registered
in QxService module
http://www.qxorm.com/doxygen/html/group___qx_service.html * Fix the
qx::QxSqlQuery
http://www.qxorm.com/doxygen/html/classqx_1_1_qx_sql_query.html
serialization process used by QxService module to send requests over
network * Fix an issue with qx::QxCollectionKey, Value
http://www.qxorm.com/doxygen/html/classqx_1_1_qx_collection.html class
when inserting an item at last position*

Changes in version *QxEntityEditor 1.1.7*:












* * New Navigator window (under project treeview) : useful to navigate over
large diagram * New way to draw relationships (orthogonal lines between 2
entities) + display the relationship type on each side (there is an option
to use the old drawing style from previous version) * Possibility to define
a background color by namespace : useful to group all entities in the
diagram associated to a same namespace * New feature to customize
entities/enumerations/notes colors at several levels * Define items colors
at project level (menu Tools  Project settings  Colors tab) * Define
items colors at namespace level (right-click on the diagram  Define
colors by namespace) * Define colors at item level : right-click on an item
(entity, enumeration or comment)  Define item colors * New action to
organize automatically the diagram layout, useful after an import process
for example (menu View  Organize diagram layout) * Improve the DDL SQL
export plugin : new option to export relationships as foreign keys
constraints in database * Support the new compilation option
_QX_NO_PRECOMPILED_HEADER of QxOrm library (workaround for a known bug of
recent versions of MinGW on Windows and large precompiled header) * Import
database by ODBC plugin : fix the import from MS SQL Server database when
tables are not located in the default schema (dbo) * QxEntityEditor Mac OS
X version : fix an issue to load the QxEEPrinter plugin * Export plugin to
C++ model/view project : new option to generate models based on the new
QxOrm library class qx::QxModelServiceT, S (models based on services to
execute client-server requests)*


http://www.qxorm.com/qxentityeditor/resource/qxee_sample.png

For more details about *QxOrm library* and *QxEntityEditor application*,
please go to website : http://www.qxorm.com/

Regards,


Lionel Marty - QxOrm library

MySQL Cluster 7.3.8 has been released

[Bjorn Munch]

Dear MySQL Users,

MySQL Cluster is the distributed, shared-nothing variant of MySQL.
This storage engine provides:

  - In-Memory storage - Real-time performance (with optional
checkpointing to disk)
  - Transparent Auto-Sharding - Read  write scalability
  - Active-Active/Multi-Master geographic replication

  - 99.999% High Availability with no single point of failure
and on-line maintenance
  - NoSQL and SQL APIs (including C++, Java, http, Memcached
and JavaScript/Node.js)

MySQL Cluster 7.3.8 has been released and can be downloaded from

  http://www.mysql.com/downloads/cluster/

where you will also find Quick Start guides to help you get your
first MySQL Cluster database up and running.

The release notes are available from

  http://dev.mysql.com/doc/relnotes/mysql-cluster/7.3/en/index.html

MySQL Cluster enables users to meet the database challenges of next
generation web, cloud, and communications services with uncompromising
scalability, uptime and agility.

More details can be found at

  http://www.mysql.com/products/cluster/

Enjoy !


==
Changes in MySQL Cluster NDB 7.3.8 (5.6.22-ndb-7.3.8) (2015-01-21)

   MySQL Cluster NDB 7.3.8 is a new release of MySQL Cluster,
   based on MySQL Server 5.6 and including features from version
   7.3 of the NDB storage engine, as well as fixing a number of
   recently discovered bugs in previous MySQL Cluster releases.

   Obtaining MySQL Cluster NDB 7.3.  MySQL Cluster NDB 7.3
   source code and binaries can be obtained from
   http://dev.mysql.com/downloads/cluster/.

   For an overview of changes made in MySQL Cluster NDB 7.3, see
   MySQL Cluster Development in MySQL Cluster NDB 7.3
( 
http://dev.mysql.com/doc/refman/5.6/en/mysql-cluster-development-5-6-ndb-7-3.html
 ).

   This release also incorporates all bugfixes and changes made
   in previous MySQL Cluster releases, as well as all bugfixes
   and feature changes which were added in mainline MySQL 5.6
   through MySQL 5.6.22 (see Changes in MySQL 5.6.22
   (2014-12-01)
   ( http://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-22.html )).

   Functionality Added or Changed

 * Performance: Recent improvements made to the
   multithreaded scheduler were intended to optimize the
   cache behavior of its internal data structures, with
   members of these structures placed such that those local
   to a given thread do not overflow into a cache line which
   can be accessed by another thread. Where required, extra
   padding bytes are inserted to isolate cache lines owned
   (or shared) by other threads, thus avoiding invalidation
   of the entire cache line if another thread writes into a
   cache line not entirely owned by itself. This
   optimization improved MT Scheduler performance by several
   percent.
   It has since been found that the optimization just
   described depends on the global instance of struct
   thr_repository starting at a cache line aligned base
   address as well as the compiler not rearranging or adding
   extra padding to the scheduler struct; it was also found
   that these prerequisites were not guaranteed (or even
   checked). Thus this cache line optimization has
   previously worked only when g_thr_repository (that is,
   the global instance) ended up being cache line aligned
   only by accident. In addition, on 64-bit platforms, the
   compiler added extra padding words in struct
   thr_safe_pool such that attempts to pad it to a cache
   line aligned size failed.
   The current fix ensures that g_thr_repository is
   constructed on a cache line aligned address, and the
   constructors modified so as to verify cacheline aligned
   adresses where these are assumed by design.
   Results from internal testing show improvements in MT
   Scheduler read performance of up to 10% in some cases,
   following these changes. (Bug #18352514)

 * Cluster API: Two new example programs, demonstrating
   reads and writes of CHAR, VARCHAR, and VARBINARY column
   values, have been added to storage/ndb/ndbapi-examples in
   the MySQL Cluster source tree. For more information about
   these programs, including source code listings, see NDB
   API Simple Array Example
( http://dev.mysql.com/doc/ndbapi/en/ndbapi-examples-array-simple.html )
   , and NDB API Simple Array Example Using Adapter
( http://dev.mysql.com/doc/ndbapi/en/ndbapi-examples-array-adapter.html ).

   Bugs Fixed

 * The global checkpoint commit and save protocols can be
   delayed by various causes, including slow disk I/O. The
   DIH master node monitors the progress of both of these
   protocols, and can enforce a maximum lag time during
   which the protocols are stalled by killing the node
   responsible for the lag when it reaches this maximum.