Bug 131011 Support running query based on report document data
Data Engine should support running a query based on data set and expression data stored in a report document. This bugzilla entry serves as a repository for design docs and notes related to this feature.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/QueryExecutor.java
}
			}
		}
	}
	/**
	 * 
	 * @param filter
	 * @return
	 */
	private boolean isGroupFilter( IFilterDefinition filter)
	{
		IBaseExpression expr = filter.getExpression( );
		if ( expr instanceof IConditionalExpression )
		{
			String expr4Exception = ( (ConditionalExpression) expr ).getExpression( )
					.getText( );
			try
			{
				new FilterExpressionParser( null, null ).compileFilterExpression( expr4Exception );
			}
			catch ( DataException e )
			{
				return true;
			}
		}
		return false;
	}
	
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryExecutor#getResultMetaData()