mdb
9d62b407e7
git-svn-id: https://samskivert.googlecode.com/svn/trunk@1774 6335cc39-0255-0410-8fd6-9bcaacd3b74c
66 lines
2.7 KiB
Plaintext
66 lines
2.7 KiB
Plaintext
samskivert notes -*- mode: outline -*-
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* To do:
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Modify JORA such that if it doesn't find a matching public field in the
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persistence object, it looks for getter/setter methods that will handle
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the encoding/decoding of the composite fields during persistification.
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Fix message.properties single quote handling. In messages that have
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translation substitutions ({0}, {1}, etc.), one has to use '' but in plain
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strings they have to use \'. It should be one or the other.
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Make MessageManager.resolveBundle more efficient because presently it
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iterates over all locales looking for an exact match *every* time a
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message is fetched.
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Make SiteResourceLoader cache the resources it loads (locate and make use
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of someone else's caching services rather than rewheeling).
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* Minimal database services
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** Requirements
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- Connection management (configuration file mapping database identifiers
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to JDBC info; connection pooling if desired; automatic reconnection on
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transient error)
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- Support for retrying transation on transient error
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- Mechanism for ironing out database idiosyncrasies
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* O/R database services
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** Requirements
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- Generate schemas from XML description
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- Generate Java source from XML description
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- Load object from table
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- Extensibility (extend tables & objects)
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- Partial loads (load subset of object fields)
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- Partial updates (update subset of object fields)
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- Joins (populate objects w/data from multiple tables)
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- Multiple queries (populate objects w/data from multiple queries)
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- Support multiple operations in the same transaction
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- Support automatic transation retries on transient errors
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- Extensible support for smoothing over DB vendor inconsistencies
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- Handle OID assignment
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- Support mapping of multiple classes to one table (ie. address contains
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zipcode object, address table contains all the information)
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- Loose coupling between in memory objects and data in database
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- Ability to load entire object and dependencies at once or as needed
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** Postponed or explicitly ignored requirements
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- Object proxies with just in time loaded fields (use partial loads instead)
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- Cursor support
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** Related projects (in some sort of order)
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- Castor http://castor.exolab.org/
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- Town http://share.whichever.com/index.php?SCREEN=town
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- POEM http://www.melati.org/
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- s2j http://www.bitmechanic.com/projects/s2j/
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- COBRA http://www.kimble.easynet.co.uk/cobra/index.htm
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- DbGen http://dbgen.sourceforge.net/
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- JORA http://www.ispras.ru/~knizhnik/
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- TableGen http://tablegen.sourceforge.net/
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- DECCO http://www.khill.org/decco/
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- Osage http://osage.sourceforge.net/
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- DOGEN http://sourceforge.net/projects/dogen/
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** Related information
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- http://www.ambysoft.com/mappingObjects.html
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- http://www.ambysoft.com/persistenceLayer.html
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