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/ReferencableStructure.java
/**
	 * Name of the "libReference" property.
	 */
	public static final String LIB_REFERENCE_MEMBER = "libReference"; 
	/**
	 * The list of cached clients.
	 */
	protected ArrayList clients = new ArrayList( );
	/**
	 * The library reference of this structure. It consists of namespace and
	 * name of the referred structure.
	 */
	protected StructRefValue libReference = null;
	/**
	 * The list of the cached reference structures. TODO all the issues about
	 * this clients list : add structure, drop structure, replace structure,
	 * broadcase event and so on.
	 */
	protected ArrayList clientStructures = new ArrayList( );
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.core.IStructure#isReferencable()
	 */
	public boolean isReferencable( )
	{
		return true;
	}
	/*
	 * (non-Javadoc)