[odb-announcements] ODB 2.3.0 released

Boris Kolpackov boris at codesynthesis.com
Wed Oct 30 05:53:32 EDT 2013


We have released ODB 2.3.0. The NEWS file entries for this release are
as follows:

 * Support for database schema evolution, including schema migration, data
   migration, and soft model changes. For more information, refer to Chapter
   13, "Database Schema Evolution" in the ODB manual.

 * Support for object sections. Sections are an optimization mechanism that
   allows the partitioning of data members of a persistent class into groups
   that can be loaded and/or updated separately. For more information, refer
   to Chapter 9, "Sections" in the ODB manual as well as the 'section'
   example in the odb-examples package.

 * Support for automatic mapping of C++11 enum classes in addition to "old"
   enums. For more information, refer to the ODB manual "Type Mapping"
   sections for each database system.

 * Support for defining composite value types inside persistent classes,
   views, and other composite values. For more information, refer to Section
   7.2, "Composite Value Types" in the ODB manual.

 * Support for pattern matching (SQL LIKE operator) in the C++-integrated
   queries. For more information, refer to Section 4.1, "ODB Query Language"
   in the ODB manual.

 * The schema_catalog::create_schema() function now has a third argument
   which indicates whether to drop the schema prior to creating the new one.
   The default is true which is backwards-compatible. The schema_catalog
   class now also provides the drop_schema() function which allows you to
   drop the schema without creating the new one. Finally, the exists()
   function now has the schema name argument which by default is an empty
   string (the default schema name). For more information, refer to Section
   3.4, "Database" in the ODB manual.

 * The transaction class now provides the default constructor that allows
   the creation of finalized transactions which can then be re-initialized
   with the reset() function. The finalized() accessor has also been added
   which allows querying of the finalization state. For more information,
   refer to Section 3.5, "Transactions" in the ODB manual.

 * New option, --fkeys-deferrable-mode, specifies the alternative deferrable
   mode for foreign keys. By default, the ODB compiler generates deferred
   foreign keys for databases that support them (SQLite, PostgreSQL, and
   Oracle) and comments the foreign keys out for databases that don't (MySQL
   and SQL Server). This option can be used to override this behavior. Refer
   to the ODB compiler command line interface documentation (man pages) for

 * Starting with MySQL version 5.6.4 it is possible to store fractional
   seconds up to microsecond precision in TIME, DATETIME, and TIMESTAMP
   columns. Both Boost and Qt profiles have been updated to support this
   new functionality. Note, however, that to enable sub-second precision,
   the corresponding type with the desired precision has to be specified
   explicitly. For details, refer to the "MySQL Database Type Mapping"
   sections in the Boost and Qt profile chapters.

 * New SQLite-specific exception, odb::sqlite::forced_rollback, which is
   thrown if SQLite forces a transaction to roll back. For more information,
   refer to Section 16.5.6, "Forced Rollback" in the ODB manual.

 * New options, --pgsql-server-version, can be used to specify the minimum
   PostgreSQL server version with which the generated C++ code and schema
   will be used. Right now this information is used to enable the use of
   the IF NOT EXISTS clause in the CREATE TABLE statement for the schema
   version table creation in PostgreSQL 9.1 and later. Refer to the ODB
   compiler command line interface documentation (man pages) for details.

 * The --output-name option has been renamed to --input-name, which is more
   semantically correct.

 * The generated database schema now explicitly specify NULL for nullable

 * The generated separate C++ schema file (--schema-format separate) no
   longer includes the generated header file (-odb.hxx). As a result, it is
   now possible to use the --generate-schema-only and --at-once options to
   generate a combined C++ schema file for several headers.

This release also adds support for Visual Studio 2005 (VC++ 8.0), including
project/solution files for all the runtimes, tests, and examples.

A more detailed discussion of the major new features can be found in the
following blog post:


This release has been tested with a large number of platform/compiler/
architecture/library combinations. Specifically:

Platform     Compiler Version  C++ Std     Arch       Qt Boost Databases
GNU/Linux     GCC     4.4-4.8  C++98,11	 x86 32/64    4,5  Y   All
GNU/Linux     Clang   3.3      C++98,11	 x86 64       4    Y   All
Raspberry Pi  GCC     4.7      C++98     arm          -    -   SQLite

Solaris	      Sun CC  12u2     Cstd      x86 32/64    -    -   All ex MS SQL
Solaris	      Sun CC  12u2     STLPort   x86 32/64    -    -   All ex MS SQL
Solaris       Sun CC  12u2     Cstd      SPARC 32/64  -    -   All ex MS SQL

Mac OS X      GCC     4.2      C++98     x86 32       4    Y   All ex MS SQL

Windows       VC++    8.0      C++98     x86 32/64    -    Y   All
Windows       VC++    9.0      C++98     x86 32/64    4    Y   All
Windows       VC++    10.0     C++11     x86 32/64    4,5  Y   All
Windows       VC++    11.0     C++11     x86 32/64    4    Y   All
MinGW-W64     GCC     4.7      C++98     x86 32       5    Y   All

We would also like to thank everyone who reported bugs, suggested fixes
or new features, as well as tested early versions of this release.

Source code and pre-compiled binary packages for this release are available
from the ODB Download page:


SHA1 checksums for the files in this release are as follows:

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