Bug 195970 Two issues when evaluate a query inlcuding a subquery[07]
Description: Currently, when evaluating a query which includes a subquery, the query will be evaluated twice. The binding of query will pass to subquery twice. If user write a java script such as new Date() and i++. The result of query will be incorrect. Another issue: when write the report document, the binding of query will be written twice and the performance is not good to evalulate it twice.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/BindingColumnsEvalUtil.java
{
	 
	private IResultIterator odiResult;
	private Scriptable scope;
	private RDSaveHelper saveHelper;
	private List allManualBindingExprs;
	private List allAutoBindingExprs;
	private boolean isBasedOnRD;
	private EvalHelper evalHelper;
	
	private final static int MANUAL_BINDING = 1;
	private final static int AUTO_BINDING = 2;
	private static Logger logger = Logger.getLogger( BindingColumnsEvalUtil.class.getName( ) );
	/**
	 * @param ri
	 * @param scope
	 * @param saveUtil
	 * @param serviceForResultSet
	 * @throws DataException 
	 */
	BindingColumnsEvalUtil( IResultIterator ri, Scriptable scope,
			RDSaveHelper saveUtil, List manualBindingExprs, Map autoBindingExprs ) throws DataException
	{
		Object[] params = {
				ri, scope, saveUtil, manualBindingExprs, autoBindingExprs
		};
		logger.entering( BindingColumnsEvalUtil.class.getName( ),
				"BindingColumnsEvalUtil",
				params );