Bug 200516 CachedQueryResults should also implement IQueryService.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/QueryExecutor.java
{
	private IBaseQueryDefinition baseQueryDefn;
	private AggregateTable aggrTable;
	
	
	private Scriptable sharedScope;
	
	
	private Scriptable parentScope;
	
	private Scriptable queryScope;
	private boolean isPrepared = false;
	private boolean isExecuted = false;
	private Map queryAppContext;
	
	private int nestedLevel = 1;
	
	protected DataSourceRuntime dataSource;
	protected DataSetRuntime dataSet;
	protected IDataSource odiDataSource;
	protected IQuery odiQuery;
	
	protected IQueryService outerResults;
	private IResultIterator odiResult;
	private IExecutorHelper parentHelper;
	private DataEngineSession session;
	private List temporaryComputedColumns = new ArrayList( );