Better concurrency support#331

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jlhonora wants to merge 2 commits intopardom-zz:masterfrom

jlhonora:transactions

jlhonora commented Jan 27, 2015

DB concurrency is tricky in Android. The following changes
allow a better handling of multithreaded db access:

Write ahead logging is enabled
Connection is configured in onConfigure (SQLiteOpenHelper)
Transactions are made in non-exclusive mode

References:

jlhonora added 2 commits

December 5, 2014 19:34


          Update travis setup

8d35133


          Better concurrency support

fb44d3c

DB concurrency is tricky in Android. The following changes
allow a better handling of multithreaded db access:

 - Write ahead logging is enabled
 - Connection is configured in onConfigure (SQLiteOpenHelper)
 - Transactions are made in non-exclusive mode

References:

 - http://developer.android.com/reference/android/database/sqlite/SQLiteDatabase.html#enableWriteAheadLogging()
 - http://developer.android.com/reference/android/database/sqlite/SQLiteOpenHelper.html#onConfigure(android.database.sqlite.SQLiteDatabase)
 - http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/4.0.1_r1/android/database/sqlite/SQLiteDatabase.java#SQLiteDatabase.beginTransaction%28android.database.sqlite.SQLiteTransactionListener%2Cboolean%29
 - https://www.sqlite.org/lockingv3.html#reserved_lock
 - https://www.sqlite.org/lang_transaction.html
 - http://developer.android.com/reference/android/database/sqlite/SQLiteDatabase.html#beginTransactionNonExclusive()

jlhonora force-pushed the transactions branch from d618190 to fb44d3c Compare

January 27, 2015 20:58

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