Bug 123036 Data in a reprot is doubly stored
We currently stored data twice. Once in the content stream, once by DtE. The instance stored by content stream should not be there.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ResultIterator.java
* @param odiResult
	 * @param scope
	 * @return
	 * @throws DataException
	 */
	static Object evaluateCompiledExpression( CompiledExpression expr,
			org.eclipse.birt.data.engine.odi.IResultIterator odiResult,
			Scriptable scope ) throws DataException
	{
		
		
		if ( expr instanceof ColumnReferenceExpression )
		{
			
			ColumnReferenceExpression colref = (ColumnReferenceExpression) expr;
			if ( colref.isIndexed( ) )
			{
				int idx = colref.getColumnindex( );
				
				if ( idx == 0 )
					return new Integer( odiResult.getCurrentResultIndex( ) );
				else if ( odiResult.getCurrentResult( ) != null )
					return odiResult.getCurrentResult( )
							.getFieldValue( idx );
				else
					return null;
			}
			else
			{
				String name = colref.getColumnName( );