[jboss-user] [JBoss jBPM] - can't delete a taskinstance from my database

hi, i want to delete a task instance from my database (mysql). this is my source code: | Connection connection=jbpmContext.getConnection(); | Statement statement=connection.createStatement(); | | // écriture de la requête de recherche | request="DELETE " | + "FROM jbpm_taskinstance " | + "WHERE id_='" | + taskInstanceId + "'"; | | // execution de la requête | statement.execute(request); | | // fermeture de la connection à la base de données | statement.close(); | connection.close(); | | but i doesn't work because, i think it doesn't execute query : | statement.execute(request); | i tried statement.executeUpDate(request); but i have the same error: | | com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails (`paolo/jbpm_log`, CONSTRAINT `FK_LOG_TASKINST` FOREIGN KEY (`TASKINSTANCE_`) REFERENCES `jbpm_taskinstance` (`ID_`)) | at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:931) | at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2934) | at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1616) | at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1708) | at com.mysql.jdbc.Connection.execSQL(Connection.java:3249) | at com.mysql.jdbc.Connection.execSQL(Connection.java:3178) | at com.mysql.jdbc.Statement.execute(Statement.java:711) | at BesoinJBpm.deleteTaskInstance(BesoinJBpm.java:361) | at BesoinJBpm.Test(BesoinJBpm.java:55) | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) | at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) | at java.lang.reflect.Method.invoke(Unknown Source) | at junit.framework.TestCase.runTest(TestCase.java:154) | at junit.framework.TestCase.runBare(TestCase.java:127) | at junit.framework.TestResult$1.protect(TestResult.java:106) | at junit.framework.TestResult.runProtected(TestResult.java:124) | at junit.framework.TestResult.run(TestResult.java:109) | at junit.framework.TestCase.run(TestCase.java:118) | at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:128) | at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) | at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460) | at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673) | at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386) | at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196) | | how can i delete this ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4071667#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...