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/core/Module.java
{
		if ( libraries == null )
			libraries = new ArrayList( );
		URL url = findResource( libraryFileName, IResourceLocator.LIBRARY );
		if ( url == null )
		{
			DesignParserException ex = new DesignParserException(
					new String[]{libraryFileName},
					DesignParserException.DESIGN_EXCEPTION_FILE_NOT_FOUND );
			List exceptionList = new ArrayList( );
			exceptionList.add( ex );
			throw new DesignFileException( libraryFileName, exceptionList );
		}
		try
		{
			Library library = LibraryReader.getInstance( ).read( session, this,
					url.toString( ), namespace, url.openStream( ) );
			if ( StringUtil.isBlank( namespace ) )
			{
				library.setNamespace( StringUtil
						.extractFileName( libraryFileName ) );
			}
			return library;
		}
		catch ( IOException e )
		{
			DesignParserException ex = new DesignParserException(
					new String[]{libraryFileName},
					DesignParserException.DESIGN_EXCEPTION_FILE_NOT_FOUND );
			List exceptionList = new ArrayList( );