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/*
* Copyright (C)2005-2012 Haxe Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package sys.db;
class Transaction {
public static function isDeadlock(e : Dynamic) {
return Std.is(e,String) && ~/try restarting transaction/.match(e);
}
private static function runMainLoop(mainFun,logError,count) {
try {
mainFun();
} catch( e : Dynamic ) {
if( count > 0 && isDeadlock(e) ) {
Manager.cleanup();
Manager.cnx.rollback(); // should be already done, but in case...
Manager.cnx.startTransaction();
runMainLoop(mainFun,logError,count-1);
return;
}
if( logError == null ) {
Manager.cnx.rollback();
#if neko
neko.Lib.rethrow(e);
#else
throw e;
#end
}
logError(e); // should ROLLBACK if needed
}
}
public static function main( cnx, mainFun : Void -> Void, ?logError : Dynamic -> Void ) {
Manager.initialize();
Manager.cnx = cnx;
Manager.cnx.startTransaction();
runMainLoop(mainFun,logError,3);
try {
Manager.cnx.commit();
} catch( e : String ) {
// sqlite can have errors on commit
if( ~/Database is busy/.match(e) )
logError(e);
}
Manager.cnx.close();
Manager.cnx = null;
Manager.cleanup();
}
}
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