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
ResultIterator.class.getName( ),
				"getValue",
				"get of value IBaseExpression: " + LogUtil.toString( dataExpr ) );
		checkStarted( );
		Object exprValue = null;
		
		Object handle = dataExpr.getHandle( );
		if ( handle instanceof CompiledExpression )
		{
			CompiledExpression expr = (CompiledExpression) handle;
			Object value = evaluateCompiledExpression( expr, odiResult, scope );
			
			try
			{
				exprValue = DataTypeUtil.convert( value, dataExpr.getDataType( ) );
			}
			catch ( BirtException e )
			{
				throw new DataException( ResourceConstants.INCONVERTIBLE_DATATYPE,
						new Object[]{
								value,
								value.getClass( ),
								DataType.getClass( dataExpr.getDataType( ) )
						} );
			}
		}
		else if ( handle instanceof ConditionalExpression )
		{
			ConditionalExpression ce = (ConditionalExpression) handle;
			Object resultExpr = getValue( ce.getExpression( ) );