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/ModuleHandle.java
/**
	 * Imports the selected styles in a <code>CssStyleSheetHandle</code> to
	 * the module. Each in the list is instance of
	 * <code>SharedStyleHandle</code> .If any style selected has a duplicate
	 * name with that of one style already existing in the report design, this
	 * method will rename it and then add it to the design.
	 * 
	 * @param stylesheet
	 *            the style sheet handle that contains all the selected styles
	 * @param selectedStyles
	 *            the selected style list
	 * 
	 * 
	 */
	abstract public void importCssStyles( CssStyleSheetHandle stylesheet,
			List selectedStyles );
	/**
	 * Sets the theme to a report.
	 * 
	 * @param themeName
	 *            the name of the theme
	 * @throws SemanticException
	 */
	public void setThemeName( String themeName ) throws SemanticException
	{
		ThemeCommand command = new ThemeCommand( (Module) getElement( ) );
		command.setTheme( themeName );
	}
	/**
	 * Returns the refresh rate when viewing the report.