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POHibernate session fails to query after ConstraintViolationException leading to AssertionFailure
 

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  1. POHibernate session fails to query after ConstraintViolationException leading to AssertionFailure
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    <p>I'm doing a batch processing of records from file in to MySQL through Hibernate. I'm trying to iterate over the records and save them, up on ConstraintViolationException i'm trying to update the record in catch clause. Some how this fails with AssertionFailure Exception.</p> <p>I'm bounded to use Sessions rather than StatelessSessions.</p> <pre><code>try { System.out.println("Inserting "+key); session.save(mud); } catch(HibernateException cve) { cve.printStackTrace(); //log.error("Failed insert, record already exists: "+key); System.out.println("Failed insert, record already exists: "+key); List res = session.createQuery("from UserData as ud where ud.taskId = "+taskId+" and ud.userId= "+userId) .list(); System.out.println("Query successfull"); if (!res.isEmpty()) { mud.setId( ((UserData) res.get(0)).getId() ); session.save(mud); continue; } } </code></pre> <p>Here's the StackTrace:</p> <pre><code>Inserting 463531145008722 org.hibernate.exception.ConstraintViolationException: could not insert: [com.test.www.UserData] at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:96) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:64) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2345) at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2852) at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:71) at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273) at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:320) at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:203) at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:129) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210) at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195) at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93) at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:713) at org.hibernate.impl.SessionImpl.save(SessionImpl.java:701) at org.hibernate.impl.SessionImpl.save(SessionImpl.java:697) at com.test.www.CSVToDB.LoadCSVToDB_statelessNoTransaction(CSVToDB.java:92) at com.test.www.CSVToDB.run(CSVToDB.java:52) at com.test.www.CSVToDB.main(CSVToDB.java:175) Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry '463531-145008722' for key 'taskId' at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) at com.mysql.jdbc.Util.getInstance(Util.java:386) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1041) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4190) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4122) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2570) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2731) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2818) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2157) at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2460) at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2377) at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2361) at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAndExtract(IdentityGenerator.java:94) at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:57) ... 18 more Failed insert, record already exists: 463531145008722 org.hibernate.AssertionFailure: null id in com.test.www.UserData entry (don't flush the Session after an exception occurs) at org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:82) at org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:190) at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:147) at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219) at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216) at com.test.www.CSVToDB.LoadCSVToDB_statelessNoTransaction(CSVToDB.java:98) at com.test.www.CSVToDB.run(CSVToDB.java:52) at com.test.www.CSVToDB.main(CSVToDB.java:175) </code></pre>
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    1. USAryan
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    1. COIs there a particular reason for you to try to insert first? How about if you follow (1) Query the database looking for the record you want. (2) If exists; then save mud...?
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    2. COyes, I need the record to be saved on to database in any case, just that if the record already exists I would need to do an update. Also since the size of the records to be saved is huge (~50 Million) query then insert is taking lot of time and db load, also updates are relatively rare.
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      1. USAryan
 

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