Bug 149251 Inconsistent Handling of a Non-inheritable ROM Property
For a ROM property defined to be non-inheritable, an empty string property value should be consistently handled as an empty string, not as null. For example, an oda.dataSource extension defines a data source property with canInherit=false. When a oda-data-source handle get saved in a report design, it correctly includes the tag for such property, even when an empty string value is specified. <oda-data-source extensionID="my.oda.plugin" name="my Data Source" id="24"> ... <property name="ApplicationServer"></property> </oda-data-source> However, later when using the DE API to read its property value, a null is returned. Then when the report design is subsequently saved, the property tag is lost. Expects that an empty string value of a non-inhertiable property should be preserved.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/util/PropertyValueValidationUtil.java
throws SemanticException
	{
		if ( !( value instanceof List ) )
			return null;
		assert propDefn.isList( );
		List retList = new ArrayList( );
		List list = (List) value;
		IStructureDefn structDefn = propDefn.getStructDefn( );
		for ( int i = 0; i < list.size( ); i++ )
		{
			IStructure item = (IStructure) list.get( i );
			if ( item.getDefn( ) != structDefn )
				throw new PropertyValueException( element.getElement( ),
						propDefn, item,
						PropertyValueException.DESIGN_EXCEPTION_WRONG_ITEM_TYPE );
			retList.add( doValidateStructure( element, structDefn, item ) );
		}
		return retList;
	}
	/**
	 * Validates a value to be stored for the given property.
	 * 
	 * @param element
	 *            the element to store the property value
	 * @param propName
	 *            the property name
	 * @param propValue
	 *            the value to check
	 * @return the translated value to be stored
	 * @throws SemanticException