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
* 
	 * @param resourceKey
	 *            the resource key
	 * @param locale
	 *            the locale information
	 * 
	 * @return corresponding <code>TranslationHandle</code>. Or return
	 *         <code>null</code> if the translation is not found in the
	 *         design.
	 * 
	 * @see TranslationHandle
	 */
	public TranslationHandle getTranslation( String resourceKey, String locale )
	{
		Translation translation = module.findTranslation( resourceKey, locale );
		if ( translation != null )
			return translation.handle( getModule( ) );
		return null;
	}
	/**
	 * Returns a string array containing all the resource keys of user-defined
	 * translations for the report.
	 * 
	 * @return a string array containing message resource keys, return
	 *         <code>null</code> if there is no messages defined in the
	 *         design.
	 */
	public String[] getTranslationKeys( )
	{
		return getModule( ).getTranslationResourceKeys( );