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EclipseLink: 2.5.0 Database: Firebird 2.1.5 Super Server I'm trying this JPQL: select a.Code from EntityA a union select b.Code from EntityB b This is resulting the SQL below: (SELECT t0.CODE FROM TABLE_A t0 UNION (SELECT t1.CODE from TABLE_B t1)) The "(" and ")" cannot be used, the correct SQL must be: SELECT t0.CODE FROM TABLE_A t0 UNION SELECT t1.CODE from TABLE_B t1 This this the real exception: SEVERE: Servlet.service() for servlet [SpringDispatcher] in context with path [/jjwxp-web] threw exception [Request processing failed; nested exception is javax.persistence.PersistenceException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.DatabaseException Internal Exception: org.firebirdsql.jdbc.FBSQLException: GDS Exception. 335544569. Dynamic SQL Error SQL error code = -104 Token unknown - line 1, column 1 ( Error Code: 335544569 Call: (SELECT t0.BIN_IMAGEM_PROIMA FROM PRODUTOS_IMAGENS t0 WHERE (t0.COD_IMAGEM = ?) UNION (SELECT t1.BIN_IMAGEM_PROCORIMA FROM PRODUTOS_CORES_IMAGENS t1 WHERE (t1.COD_IMAGEM = ?))) bind => [4, 4] Query: ReportQuery(referenceClass=ProdutoImagem sql="(SELECT t0.BIN_IMAGEM_PROIMA FROM PRODUTOS_IMAGENS t0 WHERE (t0.COD_IMAGEM = ?) UNION (SELECT t1.BIN_IMAGEM_PROCORIMA FROM PRODUTOS_CORES_IMAGENS t1 WHERE (t1.COD_IMAGEM = ?)))")] with root cause org.firebirdsql.gds.GDSException: Dynamic SQL Error SQL error code = -104 Token unknown - line 1, column 1 ( at org.firebirdsql.gds.impl.wire.AbstractJavaGDSImpl.readStatusVector(AbstractJavaGDSImpl.java:2214) at org.firebirdsql.gds.impl.wire.AbstractJavaGDSImpl.receiveResponse(AbstractJavaGDSImpl.java:2164) at org.firebirdsql.gds.impl.wire.AbstractJavaGDSImpl.iscDsqlPrepare(AbstractJavaGDSImpl.java:1551) at org.firebirdsql.gds.impl.GDSHelper.prepareStatement(GDSHelper.java:190) at org.firebirdsql.jdbc.AbstractStatement.prepareFixedStatement(AbstractStatement.java:1441) at org.firebirdsql.jdbc.AbstractPreparedStatement.prepareFixedStatement(AbstractPreparedStatement.java:1282) at org.firebirdsql.jdbc.AbstractPreparedStatement.<init>(AbstractPreparedStatement.java:138) at org.firebirdsql.jdbc.FBPreparedStatement.<init>(FBPreparedStatement.java:45) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:525) at org.firebirdsql.jdbc.FBStatementFactory.createPreparedStatement(FBStatementFactory.java:89) at org.firebirdsql.jdbc.AbstractConnection.prepareStatement(AbstractConnection.java:1187) at org.firebirdsql.jdbc.AbstractConnection.prepareStatement(AbstractConnection.java:942) at org.firebirdsql.jdbc.AbstractConnection.prepareStatement(AbstractConnection.java:896) at org.firebirdsql.jdbc.AbstractConnection.prepareStatement(AbstractConnection.java:324) at org.apache.commons.dbcp.DelegatingConnection.prepareStatement(DelegatingConnection.java:281) at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.prepareStatement(PoolingDataSource.java:313) at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.prepareStatement(DatabaseAccessor.java:1551) at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.prepareStatement(DatabaseAccessor.java:1500) at org.eclipse.persistence.internal.databaseaccess.DatabaseCall.prepareStatement(DatabaseCall.java:778) at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:619) at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:558) at org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:1995) at org.eclipse.persistence.sessions.server.ServerSession.executeCall(ServerSession.java:570) at org.eclipse.persistence.sessions.server.ClientSession.executeCall(ClientSession.java:248) at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:242) at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:228) at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:299) at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.selectAllRows(DatasourceCallQueryMechanism.java:694) at org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRowsFromTable(ExpressionQueryMechanism.java:2714) at org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllReportQueryRows(ExpressionQueryMechanism.java:2651) at org.eclipse.persistence.queries.ReportQuery.executeDatabaseQuery(ReportQuery.java:847) at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:899) at org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:1114) at org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:402) at org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:1202) at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2894) at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1797) at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1779) at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1744) at org.eclipse.persistence.internal.jpa.QueryImpl.executeReadQuery(QueryImpl.java:258) at org.eclipse.persistence.internal.jpa.QueryImpl.getSingleResult(QueryImpl.java:516) at org.eclipse.persistence.internal.jpa.EJBQueryImpl.getSingleResult(EJBQueryImpl.java:400) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.springframework.orm.jpa.SharedEntityManagerCreator$DeferredQueryInvocationHandler.invoke(SharedEntityManagerCreator.java:310) at com.sun.proxy.$Proxy29.getSingleResult(Unknown Source)
You should be able to workaround this issue by extending FirebirdPlatform and enabling your new platform by specifying it's classname with the eclipselink.target-database persistence unit property In your subclass, you would override the initializePlatformOperators in FirebirdPlatform to call super.initializePlatformOperators() and then add a new operator, much as it is done in our FirebirdPlatform now. The operator you could create would look something like this: public static ExpressionOperator UNION() { ListExpressionOperator exOperator = new ListExpressionOperator(); exOperator.setType(FunctionOperator); exOperator.setSelector(ExpressionOperator.Union); exOperator.bePrefix(); exOperator.setNodeClass(ClassConstants.ArgumentListFunctionExpression_Class); exOperator.setStartString("UNION"); exOperator.setSeparator(","); exOperator.setTerminationString(""); return exOperator; }
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