Marcus Laranjeira

Problem solved!

I used SET instead of LIST!

Look at here and here!!!

Now it works!

Rahul,



I tried again with your suggestion and it did not work. Remains exactly the same problem.

Tested the various CASCADE options and there was no change in behavior.

Hello Rahul,

Thanks for your reply!

I did it already! Look at the exceptions:

Hibernate: select pessoa0_.id as id1_0_, pessoa0_.nome as nome1_0_ from Pessoa pessoa0_ where pessoa0_.id=? Hibernate: delete from Pessoa where id=? 12:00:16,547 WARN JDBCExceptionReporter:77 - SQL Error: 2292, SQLState: 23000 12:00:16,547 ERROR JDBCExceptionReporter:78 - ORA-02292: integrity restriction (TEST.FKF6E014F167BB8FCD) violated - child record found 12:00:16,547 WARN JDBCExceptionReporter:77 - SQL Error: 2292, SQLState: 23000 12:00:16,547 ERROR JDBCExceptionReporter:78 - ORA-02292: integrity restriction (TEST.FKF6E014F167BB8FCD) violated - child record found 12:00:16,563 ERROR AbstractFlushingEventListener:301 - Could not synchronize database state with session [color=red]org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:71) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:253) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:237) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:146) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000) at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338) at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106) at br.com.laranjeira.test.TestRemoveIndividual.main(TestRemoveIndividual.java:42) Caused by: java.sql.BatchUpdateException: ORA-02292: integrity restriction (TEST.FKF6E014F167BB8FCD) violated - child record found at oracle.jdbc.driver.DatabaseError.throwBatchUpdateException(DatabaseError.java:867) at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:14480) at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:589) at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeBatch(NewProxyPreparedStatement.java:1723) at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48) at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246)[/color] ... 8 more org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:71) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43) at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:253) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:237) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:146) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000) at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338) at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106) at br.com.laranjeira.test.TesteRemoveIndividual.main(TestRemoveIndividual.java:42) Caused by: java.sql.BatchUpdateException: ORA-02292: integrity restriction (TEST.FKF6E014F167BB8FCD) violated - child record found at oracle.jdbc.driver.DatabaseError.throwBatchUpdateException(DatabaseError.java:867) at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:14480) at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:589) at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeBatch(NewProxyPreparedStatement.java:1723) at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48) at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246) ... 8 more



Thanks again!

In some tests with Hibernate, to remove an entity that appears in 3 lines of an intermediate table, instead of removing it to 3 lines in this entity, he removed and inserted again ALL lines referring to those who remained in the intermediate table.

To understand better, see the code:

Entity TEAM:// imports here... @Entity public class Team { @Id private int team; private String name; @OneToOne private TeamType teamType; @ManyToMany private List<individual> individuals = new ArrayList<individual>(); // getters & setters here... }Entity TEAMTYPE:// imports here... @Entity public class TeamType { @Id private int teamType; private String teamTypeName; // getters & setters here... }Entity INDIVIDUAL:// imports here... @Entity public class Individual { @Id private int id; private String name; @ManyToMany(mappedBy = "individuals") private List<Team> teams; // getters & setters here... }Hibernate generated the following SQL script:drop table Team cascade constraints drop table Team_Individual cascade constraints drop table Individual cascade constraints drop table TeamType cascade constraints create table Team ( team number(10,0) not null, name varchar2(255 char), teamType_teamType number(10,0), primary key (team) ) create table Team_Individual ( teams_team number(10,0) not null, individuals_id number(10,0) not null ) create table Individual ( id number(10,0) not null, name varchar2(255 char), primary key (id) ) create table TeamType ( teamType number(10,0) not null, nameTeamType varchar2(255 char), primary key (teamType) ) alter table Team add constraint FK7C2D8A55ACA0E820 foreign key (teamType_teamType) references TeamType alter table Team_Individual add constraint FKF6E014F11DC9DE83 foreign key (teams_team) references Team alter table Team_Individual add constraint FKF6E014F167BB8FCD foreign key (individuals_id) references IndividualThe database was empty, so TeamTypes, Teams and individuals were added://... t1.setTeamTypeName("Test TeamType1"); t1.setTeamType(1); //t2... //... e1.setTeam(1); e1.setName("Test Team 1"); e1.setTeamType(t1); //e2, e3... //... p1.setName("Test I1"); p1.setId(1); //p2, p3, p4, p5, p6, p7... //...In order to obtain such a situation that attend this diagram:



Then, the intermediate table was something like this:TEAMS_TEAM INDIVIDUALS_ID 1 1 1 2 1 3 1 7 2 3 2 4 2 5 2 7 3 1 3 5 3 6 3 7The problem I found is to remove the individual P7 with ID 7. Here he is on 3 teams, and correctly displayed on 3 lines of intermediate table with the correct relationship with the 3 teams.

The code to remove it is this://... Dao<Individual> IndividualDao = new Dao<Individual>(session, Individual.class); Individual p7 = IndividualDao.load(7); Transaction tx = session.beginTransaction(); //Take out the individual of the teams to remove p.getTeams().get(0).getIndividuals().remove(p7); p.getTeams().get(1).getIndividuals().remove(p7); p.getTeams().get(2).getIndividuals().remove(p7); // try catch... IndividualDao.delete(p7); tx.commit(); //...In implementing this, Hibernate should do everything I need, besides deleting the row relating to the individual, it should only delete 3 lines in the intermediate table. Except that instead he:Hibernate: delete from Team_Individual where teams_team=? Hibernate: insert into Team_Individual (teams_team, individuals_id) values (?, ?) Hibernate: insert into Team_Individual (teams_team, individuals_id) values (?, ?) Hibernate: insert into Team_Individual (teams_team, individuals_id) values (?, ?) Hibernate: delete from Team_Individual where teams_team=? Hibernate: insert into Team_Individual (teams_team, individuals_id) values (?, ?) Hibernate: insert into Team_Individual (teams_team, individuals_id) values (?, ?) Hibernate: insert into Team_Individual (teams_team, individuals_id) values (?, ?) Hibernate: delete from Team_Individual where teams_team=? Hibernate: insert into Team_Individual (teams_team, individuals_id) values (?, ?) Hibernate: insert into Team_Individual (teams_team, individuals_id) values (?, ?) Hibernate: insert into Team_Individual (teams_team, individuals_id) values (?, ?) Hibernate: delete from Team_Individual where teams_team=?I have also implemented a trigger in the database (Oracle) and it inserted as well as deleted. I suspected that the INSERTS were informational only. It does delete individual correctly. But it's inserting again into the intermediate table. The most strange is that after this operation the intermediate table is correct and no exceptions are thrown.

I can't understand why Hibernate is doing this.

For a table with 12 records, this is "peanuts", but imagine if I had 2,000,000 and remove 3? it would reinsert 1,999,997?

Where am I missing?

Regards from Brazil!