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path: root/lib/mnesia/src/mnesia_index.erl
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2018-08-17Clean up bag index tablesDan Gudmundsson
Index records for bag tables with ram_copies was not deleted after "real" objects where deleted and thus a memory leak.
2017-09-05mnesia: Improve handling of UnicodeHans Bolinder
2016-05-24mnesia: Fix index match return patternsDan Gudmundsson
When building match result patterns the tuples they must qouted with { }, which causes a problem with variable patterns. Use element(1, Match) instead of trying to build the two tuple.
2016-05-09Merge branch 'dgud/mnesia/ext-backend/PR-858/OTP-13058'Dan Gudmundsson
* dgud/mnesia/ext-backend/PR-858/OTP-13058: mnesia_ext: Add basic backend extension tests mnesia_ext: reuse snmp field for ext updates mnesia_ext: Create table/data containers from mnesia monitor not temporary processes mnesia_ext: Implement ext copies index mnesia_ext: Load table ext mnesia_ext: Dumper and schema changes mnesia_ext: Refactor mnesia_schema.erl mnesia_ext: Ext support in fragmented tables mnesia_ext: Backup handling mnesia_ext: Create schema functionality mnesia_ext: Add ext copies and db_fold to low level api mnesia_ext: Refactor record_validation code mnesia_ext: Add create_external and increase protocol version to monitor mnesia_ext: Add ext copies to records mnesia_ext: Add supervisor and behaviour modules
2016-05-09mnesia_ext: Create table/data containers from mnesia monitor not temporary ↵Dan Gudmundsson
processes Tables or data containers should be owned and monitored by mnesia_monitor and should thus be created by that process. Always create_table before loading it We need to create tables for ram_copies at least before loading them as they are intermittent. It is also needed to get mnesia monitor as the parent and supervisor of the data storage.
2016-05-09mnesia_ext: Implement ext copies indexUlf Wiger
Make ram_copies index always use ordered_set And use index type as prefered type not a implementation requirement, the standard implmentation will currently ignore the prefered type.
2016-03-15update copyright-yearHenrik Nord
2015-09-10mnesia: Improve index updatesDan Gudmundsson
There is no need to update the index table if a record is updated in non indexed field. This removes one timing glitch where dirty_index_read would return an empty list for records that where updated. There is still an issue with dirty_index_read when updates are made to the index field, it have been reduced but the real table updates are made after the index table references have been added. Originally reported by Nick Marino in erl-questions mailing list, thanks.
2015-06-18Change license text to APLv2Bruce Yinhe
2015-03-27mnesia: Replace catch with try-catchDan Gudmundsson
Avoids building stacktraces where it is not needed and do not mask errors, i.e. only catch the relevant classes in each try.
2014-03-28mnesia: Dialyzer fixesDan Gudmundsson
2014-02-20mnesia: cleanup some dialyzer unmatched return warningsDan Gudmundsson
2013-06-12Update copyright yearsBjörn-Egil Dahlberg
2013-04-24Fix missing case clause for ordered_set tablesNick Marino
The previous commit contained a regression that would trigger a crash when attempting to add an index to an Mnesia table of type ordered_set.
2013-04-12Optimize index creation for Mnesia set tablesNick Marino
ETS bag tables have very poor performance on insertion if you have lots of rows with duplicate keys, since it has to check each existing record and make sure it's not inserting any duplicates. This can lead to some pretty drastic slowdowns when inserting lots of rows into an Mnesia table, IF you're introducing lots of duplicate values into an indexed column. As it turns out, we can fix this by switching to duplicate_bag tables for storing Mnesia indexes on tables of type 'set', and it ultimately makes no functional difference since we will never actually attempt to insert any duplicate records anyway. (We would have to make some bigger changes to make this work for Mnesia bag tables though, so that is left as a possible enhancement for the future.)
2012-08-31Update copyright yearsBjörn-Egil Dahlberg
2012-06-18Prevent index from being corrupted if a nonexistent item is deletedBartlomiej Puzon
We have to ensure that we actually delete the last object with a given (key, index) pair before removing the index.
2011-03-02Mnesia dialyzer fixesDan Gudmundsson
With help from Kostis
2009-11-20The R13B03 release.OTP_R13B03Erlang/OTP