Let's require lib/ddllib.php and use the constant properly,
so we don't need to go searching for cases in future changes.
They are a hand of files, but already are included often each
time the database manager is included. Possible alternative
for this, if we want to reduce the number of included files
is to move the constants to xmldb_constants and only include
that file, but I don't think that makes much sense.
Also, fix the xmldb schema definition to validate table and
column names with the new allowed lengths.
Standardises return patterns of null values across database types
to keep with sorting nullsto the top when ascending, and
to the bottom when descending
This patch adds a solution for Postgres that allows overriding IN
statement limit of 16bit (65535 values) by wrapping items in VALUES
list. This only takes place in number of items exceeds 65535, otherwise
parent class get_in_or_equal() function is used.
The new API works on normal databases (by deleting data based on the
subquery) and also on MySQL (by deleting the data using a weird join
on the subquery).
Implemented with moodle_read_slave_trait
Functionality is triggered by supplying config dboption['readonly'].
See config-dist.php for more info on supported dboptions.
pgsql and mysqli drivers are using this feature. Also added support for
connection timeout for these two drivers.
MySQL v8 has added "groups" to the reserved word list. That is used
as a table name in Moodle so we have to quote it with backticks in the
SQL so that MySQL knows it's being used as an identifier.
- Clumsy fallback only when there is no full-text search support
- Mimic solr tests
- pgsql tokenization using simple configuration
- workaround for mysql '*' search issue
- total results proper calculation
- SQL server FTS support
- Standarize dml full-text search checkings
- Upgrade note about the new dml method
- Set search_simpledb as default engine if no solr config
It is now safe to cache a reference to a cache and expect consistent results.
Changing identifiers altered cache results where a reference was
held to the cache. Identifiers have been set to be cached with
identifiers included so the caches are separate.
As a consequence of this it was identified that invalidation events
and identifiers don't easily work together as an event can't determine
which identifiers should be used for cache invalidation. So invalidation
events have been made incompatible with identifiers being set. No core
code used this combination as it's not possible to understand any expected
behaviour.
Event invalidation for application and session caches was centralised to the same
location. The only difference was the name of the lastinvalidation variable. This
improves support and consistency of invalidation code.
This patch includes following fixes:
- messages may be now sent when database transactions active
- consistent return status on failure from message_send(), false is
returned only when message not created in message(_read)? table,
processor failure results in debugging message only and messages
are not marked as read
- message_sent is triggered always with id from message table
- logic for marking messages as viewed was standardised
- message_viewed event is triggered consistently
- improved performance when fetching user preferences
- full unit tests coverage for send_message() function
- fixed multiple other smaller issues discovered by unit tests
Tim Hunt