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
SlotHandle slotHandle = getParameters( );
		Iterator it = slotHandle.iterator( );
		while ( it.hasNext( ) )
		{
			DesignElementHandle h = (DesignElementHandle) it.next( );
			list.add( h );
			if ( h instanceof ParameterGroupHandle )
			{
				addParameters( list, (ParameterGroupHandle) h );
			}
		}
		DesignElementHandle.doSort( list );
		return list;
	}
	/**
	 * Returns an external file that provides help information for the report.
	 * 
	 * @return the name of an external file
	 */
	public String getHelpGuide( )
	{
		return getStringProperty( HELP_GUIDE_PROP );
	}
	/**
	 * Returns the script called when the report starts executing.
	 * 
	 * @return the script called when the report starts executing
	 */
	public String getInitialize( )
	{