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/PreparedSubquery.java
{
		private IResultIterator resultIterator;
		private IResultClass resultClass;
		
		private boolean finished;
		CustomDataSet( IResultIterator resultIterator, IResultClass resultClass )
		{
			this.resultIterator = resultIterator;
			this.resultClass = resultClass;
		}
		/*
		 * @see org.eclipse.birt.data.engine.odi.ICustomDataSet#getResultClass()
		 */
		public IResultClass getResultClass( )
		{