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/executor/transform/group/GroupCalculationUtil.java
{
	
	private int startIndex;
	private int endIndex;
	
	private Object[] sortKeys;
	private boolean[] sortDirections;
	
	private boolean accept = true;
	/**
	 * @param start
	 *            The start index of a group
	 * @param end
	 *            The end index of a group
	 */
	GroupBoundaryInfo( int start, int end )
	{
		this.startIndex = start;