Continuing MediaWiki development

No fresh download quite yet, but I just made a large commit to the MediaWiki source of the last week’s work. This is going in the trunk — aka MediaWiki 1.16alpha. There are a few bugs I hope to catch this weekend, at which point I’ll put up a fresh archive of working code.

* Made installation on IBM DB2 more robust
* Replaced E_ALL error reporting mode with E_ALL | E_STRICT

* Enabled DB2_CASE_LOWER option for all connections and statements
* Enabled DB2_DEFERRED_PREPARE_ON for all statements — delays statement preparation until execution to reduce database load
* Enabled DB2_ROWCOUNT_PREFETCH_ON for all statements — makes db2_num_rows() work correctly
* Cleaned up error handling
* Cleaned up method signatures
* Rewrote insertion to use prepared statements — required for inserting more than 32k of text
* Insertion will never try to insert a NULL value into a primary key
* Now relying on implicit casting in DB2 9.7 — no longer sniffing to see if column is integer or string before adding quotes
* Implemented actual prepared statement handling — required for correct INSERT, UPDATE behaviour
* In install mode, the class will print additional messages to the install bullet scroll
* Added bitwise operation abstraction (BITNOT, BITAND, BITOR)

* Added skeleton DB2 syntax to the database-specific switch statement

* Made limit clause database-agnostic

* Contents replaced with link to

* Revised types to better match the main schema
* All tables names now the same as MySQL — was using Postgres schema’s names before
* Added some additional indices
* Added the change_tag, tag_summary, valid_tag, user_properties, log_search, and l10n_cache tables
* Added several new columns

* Made limit clause database-agnostic

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