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/DesignElement.java
DesignElement element )
	{
		List errors = checkContainmentContext( module, slotId, element );
		if ( !errors.isEmpty( ) )
			return false;
		return true;
	}
	/**
	 * Determines if the slot can contain a given element.
	 * 
	 * @param module
	 *            the module
	 * @param slotId
	 *            the slot id
	 * @param element
	 *            the element to insert
	 * @return a list containing exceptions.
	 */
	public final List checkContainmentContext( Module module, int slotId,
			DesignElement element )
	{
		boolean retValue = canContainInRom( slotId, element.getDefn( ) );
		ContentException e = new ContentException( this, slotId, element,
				ContentException.DESIGN_EXCEPTION_INVALID_CONTEXT_CONTAINMENT );
		List errors = new ArrayList( );
		if ( !retValue )
		{
			errors.add( e );
			return errors;
		}