Bug 200500 Error happens while share result set from item behind it.[0005]
Description: Error happens while share result set from item behind it. Build number:2.2.1.v20070820 Steps to reproduce: 1. New sample data source and dataset. 2. Drag the dataset to Layout and name it t1. 3. Insert a table before t1 and share result set from t1. 4. Preview. Expected result: If this situation isn't supported by Engine, at least we should provide friendly error message. Actual result: Error happened while running the report. Error log:n/a
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/QueryResults.java
/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryService#isClosed()
	 */
	public boolean isClosed( )
	{
		return queryService == null;
	}
	
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryService#getNestedLevel()
	 */
	public int getNestedLevel( )
	{
		return this.nestedLevel;
	}
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryService#getQueryScope()
	 */
	public Scriptable getQueryScope( )
	{
		return this.queryScope;
	}
	
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryService#getExecutorHelper()
	 */
	public IExecutorHelper getExecutorHelper( ) throws DataException
	{
		return ( (ResultIterator) this.getResultIterator( ) ).getOdiResult( )
				.getExecutorHelper( );