Bug 212505 Use default script ID to skip script debugging
In Dte side, when compile or evaluate java script, it would pass in a script source id. This kind of id is currenlty used by report script debugger. So to skip redundant processing for such kind of internal script evaluating, dte need pass in a default ID, which is defined as ScriptExpression.defaultID. If this id is already used for particular meaning and it can not pass in the default ID, we need define them as public constants and let script debugger check and skip them as well.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/adapter/ModelDteApiAdapter.java
private IJointDataSetDesign newJointDataSet( JointDataSetHandle handle, ExecutionContext context2 ) throws BirtException
	{
		Iterator it = handle.joinConditionsIterator( );
		List joinConditions = new ArrayList();
		
		JoinConditionHandle jc = null;
		
		while( it.hasNext( ) )
		{
			jc = (JoinConditionHandle)it.next( );
			joinConditions.add( new JoinCondition( new ScriptExpression( jc.getLeftExpression( )), new ScriptExpression(jc.getRightExpression( )),toDteJoinOperator(jc.getOperator( )))) ;
		}
		
		int joinType = toDteJoinType(jc.getJoinType( ));
		
		IBaseDataSetEventHandler eventHandler = new DataSetScriptExecutor(
				handle, context );
		JointDataSetDesign dteDataSet = new JointDataSetDesign( handle.getQualifiedName( ),
				jc.getLeftDataSet( ),
				jc.getRightDataSet( ),
				joinType,
				joinConditions );
		dteDataSet.setEventHandler( eventHandler );
		
		adaptBaseDataSet( handle, dteDataSet );
		return dteDataSet;
	}
	private int toDteJoinOperator( String operator )
	{
		if( operator.equals( DesignChoiceConstants.JOIN_OPERATOR_EQALS ))