Bug 179737 The MeasureHandle should be able to provide data type info
We are now allow user input expression as measure expression. However this brings difficulties in determine the data type of a measure expression evaluation result. We need MeasureHandle to be enhanced to include the data type info. Please note that data type "any" is not accepted.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
writeMember( struct, memberDefn );
			}
			writer.endElement( );
		}
		writer.endElement( );
	}
	/**
	 * Writes the structure list of the give property definition for given
	 * structure.
	 * 
	 * @param obj
	 *            the structure to write
	 * @param memberName
	 *            the name of the structure list property to write
	 */
	private void writeStructureList( IStructure obj, String memberName )
	{
		PropertyDefn prop = (PropertyDefn) obj.getDefn( )
				.getMember( memberName );
		assert prop != null;
		assert prop.getTypeCode( ) == IPropertyType.STRUCT_TYPE
				&& prop.isList( );
		assert obj instanceof Structure;
		List list = (List) ( (Structure) obj ).getLocalProperty( getModule( ),
				prop );
		if ( list == null || list.size( ) == 0 )
			return;
		writer.startElement( DesignSchemaConstants.LIST_PROPERTY_TAG );