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/ResultIterator.java
/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getDate(java.lang.String)
	 */
	public Date getDate( String name ) throws BirtException
	{
		return DataTypeUtil.toDate( getValue( name ) );
	}
	
	/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getBlob(java.lang.String)
	 */
	public Blob getBlob( String name ) throws BirtException
	{
		return DataTypeUtil.toBlob( getValue( name ) );
	}
	
	/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#getBytes(java.lang.String)
	 */
	public byte[] getBytes( String name ) throws BirtException
	{
		return DataTypeUtil.toBytes( getValue( name ) );
	}
	
	/*
	 * @see org.eclipse.birt.data.engine.api.IResultIterator#skipToEnd(int)
	 */
	public void skipToEnd( int groupLevel ) throws DataException
	{
		checkStarted( );