TOPLINK-6119 ERROR for the following query,

Question

any ideas as how to modify or make the query work? thanks,
Query:
====
ReadAllQuery query5 = new ReadAllQuery();
query5.setReferenceClass( Instrument.class );
query5.setSelectionCriteria( new ExpressionBuilder().get( "shortName" ).equal( shortName ) );
query5.addBatchReadAttribute( query5.getExpressionBuilder().anyOf( "customFields" )
.get( "stringValue" ).equal( "XYZ987" ) );
Exception stack
===========
Database exception: Exception [TOPLINK-6119] (Oracle TopLink - 10g Release 3 (10.1.3.3.0) (Build 070620)): oracle.toplink.exceptions.QueryException
Exception Description: The join expression
Relation operator =
Query Key stringValue
Query Key customFields
Base QUERY OBJECT
Constant XYZ987 is not valid, or for a mapping type that does not support joining.
Query: ReadAllQuery(com.integral.finance.instrument.Instrument).
     at com.integral.persistence.PersistenceFactory.handleException(PersistenceFactory.java:793)
     at oracle.toplink.publicinterface.Session.handleException(Session.java:1951)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:1021)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:950)
     at com.integral.finance.instrument.test.InstrumentCustomFieldPTestC.testInstrument(InstrumentCustomFieldPTestC.java:588)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     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 junit.framework.TestSuite.runTest(TestSuite.java:208)
     at junit.framework.TestSuite.run(TestSuite.java:203)
     at junit.textui.TestRunner.doRun(TestRunner.java:116)
     at com.intellij.rt.execution.junit.IdeaTestRunner.doRun(IdeaTestRunner.java:69)
     at junit.textui.TestRunner.doRun(TestRunner.java:109)
     at com.intellij.rt.execution.junit.IdeaTestRunner.startRunnerWithArgs(IdeaTestRunner.java:24)
     at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:118)
     at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:40)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)

Answer 1

Hello,
Your are adding a selection criteria through the addBatchReadAttribute api which isn't allowed. It is expecting only a query key type expression.
Try:
  ReadAllQuery query5 = new ReadAllQuery();
  query5.setReferenceClass( Instrument.class );
  ExpressionBuilder exb = query5.getExpressionBuilder();
  Expression batchExpression = exb.anyOf( "customFields" );
  Expression expression = exb.get( "shortName" ).equal( shortName );
  expression = expression.and( batchExpression.get( "stringValue" ).equal ("XYZ987") );
  query5.setSelectionCriteria( expression );
  query5.addBatchReadAttribute( batchExpression );This will return all Instrument objects with the require shortName and having a customField with the stringName of "XYZ987". It will use batching to return all referenced customFields (not just the ones with a stringName of "XYZ987").
Best Regards,
Chris