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/command/PropertyCommand.java
doSetProperty( prop, value );
		}
		else if ( IExtendedItemModel.EXTENSION_NAME_PROP.equals( propName ) )
		{
			doSetProperty( prop, value );
		}
		else if ( Module.THEME_PROP.equals( propName ) )
		{
			assert module == element;
			ThemeCommand cmd = new ThemeCommand( (Module) element );
			cmd.setThemeRefValue( (ElementRefValue) value );
		}
		else
		{
			
			assert false;
		}
	}
	/**
	 * Checks whether the name is valid in the context.
	 * 
	 * @param name
	 *            the new name
	 * @return <code>true</code> if the name is valid. Otherwise
	 *         <code>false</code>.
	 */
	private boolean isGroupNameValidInContext( String groupName )
	{
		assert element instanceof GroupElement;
		if ( groupName == null )