I have a problem with creating Criteria search result with Entity that has EmbeddedId.
Let's say I have many-to-many relation with additional fields. My example is to connect Player with Season as many-to-many relationship (called Performance) with additional field : goals. Example here: https://www.dropbox.com/s/3f79euvlth9z1op/erd.png
So I have mapped Entities:
Code:
@Entity
@Table(name="performances")
@AssociationOverrides({
@AssociationOverride(name="id.player", joinColumns=@JoinColumn(name="player_id")),
@AssociationOverride(name="id.season", joinColumns=@JoinColumn(name="season_id"))
})
public class Performance implements Serializable {
private static final long serialVersionUID = 1L;
@EmbeddedId
@Getter @Setter
private PerformanceID id;
@Getter @Setter
private int goals;
public Player getPlayer(){
return id.getPlayer();
}
public Season getSeason(){
return id.getSeason();
}
// equals, hashcode, tostring...
}
Code:
@Embeddable
public class PerformanceID implements Serializable {
private static final long serialVersionUID = 1L;
@ManyToOne(fetch=FetchType.LAZY, targetEntity=Player.class)
@JoinColumn(name="player_id")
@Getter @Setter
private Player player;
@ManyToOne(fetch=FetchType.LAZY, targetEntity=Season.class)
@Getter @Setter
private Season season;
}
Now I want to search my objects: I want to search Performance that hawe Players with name "Claudio". In HQL ewerything works fine:
Code:
public List<Performance> customList() {
Query query = sessionFactory.getCurrentSession().createQuery("from Performance where id.player.name = 'Claudio'");
return query.list();
}
It generates SQL like:
Quote:
select performanc0_.player_id as player2_1_, performanc0_.season_id as season3_1_, performanc0_.goals as goals1_ from performances performanc0_ cross join players player1_ where performanc0_.player_id=player1_.id and player1_.name='Claudio'
But i cannot generate it by create criteria. My try was:
Code:
public List<Performance> customList() {
Criteria criteria = sessionFactory.getCurrentSession().createCriteria(Performance.class);
criteria.createAlias("id.player", "player");
criteria.add(Restrictions.ilike("player.name", "Claudio"));
return criteria.list();
}
and it has generated sql like:
Quote:
select this_.player_id as player2_1_0_, this_.season_id as season3_1_0_, this_.goals as goals1_0_ from performances this_ where player1_.name ilike ?
But it failed with SQLGrammarException (missing claule "FROM" for table "player1_"):
My stacktrace:
Quote:
[org.hibernate.exception.SQLGrammarException: BŁĄD: brakująca klauzula FROM dla tabeli "player1_"
Pozycja: 129
at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:122)
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:129)
at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
at com.sun.proxy.$Proxy30.executeQuery(Unknown Source)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1897)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1698)
at org.hibernate.loader.Loader.doQuery(Loader.java:832)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:293)
at org.hibernate.loader.Loader.doList(Loader.java:2382)
at org.hibernate.loader.Loader.doList(Loader.java:2368)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2198)
at org.hibernate.loader.Loader.list(Loader.java:2193)
at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:122)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1618)
at org.hibernate.internal.CriteriaImpl.list(CriteriaImpl.java:374)
at pl.andrzejcichon.criterionlazydatamodel.repository.impl.PerformanceDatabaseRepository.customList(PerformanceDatabaseRepository.java:30)
at pl.andrzejcichon.criterionlazydatamodel.repository.impl.PerformanceDatabaseRepositoryTest.test(PerformanceDatabaseRepositoryTest.java:24)
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 org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.postgresql.util.PSQLException: BŁĄD: brakująca klauzula FROM dla tabeli "player1_"
Pozycja: 129
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2102)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1835)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:500)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:388)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:273)
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 org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122)
... 43 more
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