Pending changes in the mainline
===============================

* Compatibility with Orthanc SDK 1.12.0 (communications between the
  Orthanc core and the database plugin using Google Protocol Buffers)
* Upgraded dependencies for static builds (notably on Windows and LSB):
  - openssl 3.1.0


Release 4.0 (2021-04-22)
========================

* New option "IndexConnectionsCount" to control how many simultaneous
  connections to the PostgreSQL database are used by the index plugin
* Support of revisions for metadata and attachments
* Support of multiple readers/writers, by handling retries from Orthanc SDK 1.9.2
* Support of range reads for the storage area, from Orthanc SDK 1.9.0
* Fix issue #193 (LSB binaries crash with PostgreSQL + SSL) by changeset
  in OrthancFramework: https://hg.orthanc-server.com/orthanc/rev/9a9118406484
* Fix issue #151 (Storage failures when running with two instances and PG_LOCK=false)


Release 3.3 (2020-12-14)
========================

* Added an advisory lock to avoid race conditions during database setup
* Added "MaximumConnectionRetries" & "ConnectionRetryInterval" to configure 
  the retries when connecting to the DB at startup
* Support of dynamic linking against the system-wide Orthanc framework library
* Upgraded dependencies for static builds (notably on Windows and LSB):
  - openssl 1.1.1g
  - libpq 13.1 (replacing libpq 9.6.1)


Release 3.2 (2019-03-01)
========================

* Explicit deallocation of prepared statements


Release 3.1 (2019-02-08)
========================

* Fix build on Debian Buster
* Remove "ASSERT" in SQL for compatibility with older releases of PostgreSQL
* Implementation of new extensions: LookupResourceAndParent and GetAllMetadata
* Performance: Defining option "TCP_NODELAY" if libpq is linked statically


Release 3.0 (2019-01-21)
========================

* New configuration option: "EnableSsl"
* Database optimizations by implementing new primitives of Orthanc SDK 1.5.2
* Fix issue 105 (Unable to connect to PostgreSQL database using SSL)
* Fix Debian issue #906771 (Uncaught exception prevents db intialization
  (likely related to pg_trgm))
* Fix: Catching exceptions in destructors


Release 2.2 (2018-07-16)
========================

!! Important remark when upgrading from an older version of the plugin:

   The plugin will create a new index to improve search performance.
   This can take several minutes at the first Orthanc startup. Orthanc
   will not be available during this period. On a PostgreSQL database
   with 100,000 studies, we have observed that updating the index took
   around 10 minutes.

* Migration into the "orthanc-databases" repository
* Full refactoring to share code with MySQL
* Fix issue 41 (Additional range IdentifierConstraintType in Orthanc)
  !! This fix requires Orthanc version >= 1.4.0
* Fix issue 47 (Index improvements for PG plugin)
* Fix issue 76 (PG connection shall reconnect/retry in case it loses
  the connection to the server)


Release 2.1 (2018-04-20)
========================

* Running transactions in "Serializable" isolation level to avoid 
  inconsistencies if multiple Orthanc are writing to the same DB
* Upgrade to PostgreSQL 9.6.1 client library for static builds
* Performance warning if runtime debug assertions are turned on
* Fix issue 62 (use correct type for lo_read() value)
* Fix issue 63 (allow to connect without specifing username and/or port)
* Fix issue 68 (PostgreSQL plugin needs extra flags to compile)
* Resort to Orthanc framework
* Support of Linux Standard Base, OpenBSD and FreeBSD


Release 2.0 (2015-12-02)
========================

=> Minimum SDK version: 0.9.5 <=
=> Supported database versions: 5 (upgrade only) and 6 <=

* Support version 6 of the database schema
* The "value" column of tables "MainDicomTags" and "DicomIdentifiers" are now TEXT instead of BYTEA


Release 1.3 (2015-10-07)
========================

=> Minimum SDK version: 0.9.4 <=
=> Supported database versions: 5 <=

* Fix build with Orthanc plugin SDK 0.9.4
* Implementation of "GetAllPublicIdsWithLimit" extension
* Implementation of "UpgradeDatabase" extension


Release 1.2 (2015-08-02)
========================

=> Minimum SDK version: 0.9.1 <=

* Inject version information into Windows binaries
* CMake flag to prevent compiling the unit tests (if no PostgreSQL test server is available)
* Update to Boost 1.58.0 for static and Windows builds
* Support of OS X compilation


Release 1.1 (2015-07-03)
========================

* Fixes
* Support of Visual Studio 2008
* Support of FreeBSD thanks Mikhail <mp39590@gmail.com>


Release 1.0 (2015-02-27)
========================

* Use of advisory locks
* Support of connection URI in PostgreSQL
* Options "EnableIndex" and "EnableStorage" to explicitly enable PostgreSQL


2015-02-06
==========

* Initial release