Looks interesting... Do you consider a StorageManagers for Oracle ?
Olive. On Jan 24, 11:57 pm, "Robert Brewer" <[EMAIL PROTECTED]> wrote: > The Dejavu Object-Relational Mapper (version 1.5.0RC1) is now available > and in the public domain. Get it athttp://projects.amor.org/dejavu, > or from PyPI:http://www.python.org/pypi/Dejavu/1.5.0RC1. > > Dejavu is an Object-Relational Mapper for Python applications. It is > designed to provide the "Model" third of an MVC application. Dejavu > avoids making decisions in the framework which are better left to > developers, and avoids forcing developers to make decisions which are > better left to deployers. In particular, deployers are allowed to mix > and match storage mechanisms, including how and when to cache objects in > memory, making it easier for deployers to tune applications to their > particular environment. > > Dejavu provides: > > Modeling Layer > 1. A base Unit class for persisting objects to storage. > 2. A base UnitProperty class for persistent object attributes. > 3. ID Sequencers. > 4. Associations between Unit classes. > 5. Unit Engines, Rules, and Collections. > 6. Aggregation and analysis tools. > > Application Layer > 1. Expressions: pure Python lambda querying. This is perhaps the most > appealing feature of Dejavu. > 2. Sandboxes, which serve as Identity Maps, transaction boundaries, > and per-connection caches. > 3. An Arena class for application-level data. > > Storage Layer > 1. A base StorageManager class and specification. Unlike many ORMs, > Dejavu does not require you to have complete control of the back end. > 2. Specific StorageManagers for: > a. Microsoft SQL Server/MSDE > b. Microsoft Access (Jet) > c. PostgreSQL > d. MySQL > e. SQLite > f. Shelve > g. Firebird > h. RAM > i. Filesystem > > What's New in 1.5:http://projects.amor.org/dejavu/wiki/WhatsNewIn15 > > * Native ID sequencing. > * Distributed transactions and tested isolation levels. > * Complete database introspection and auto discovery. > > * New Firebird support. > * New RAM Storage Manager. > * New psycopg2 support. > * New support for using the sqlite3 module built into Python 2.5. > * Support for typed and typeless SQLite. > * Support for SQLite :memory: databases. > > * Complete numeric precision and scale support. > * Native date function support. > * Complete M x N type-adaptation. > * Bulletproof encoding support. > * New 'range' function which returns the closed interval [min(attr), > ..., max(attr)]. > * New 'sum' function which returns the sum of all non-None values for > the given cls.attr. > * Multiple and custom Associations. > * Improved performance (especially ADO). > * New JSON encoder/decoder. > * Short config names for Storage Managers. > * ADO: New support for the CURRENCY datatype. > * ADO: Improved string comparisons using Convert and StrComp. > > Upgrading to 1.5: > Seehttp://projects.amor.org/dejavu/wiki/UpgradeTo1.5 > > Documentation for 1.5:http://projects.amor.org/docs/dejavu/1.5.0RC1/ > > Robert Brewer > System Architect > Amor Ministries > [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
