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/metadata/ElementDefn.java
public List getProperties( )
	{
		ArrayList list = new ArrayList( properties.values( ) );
		
		ElementDefn obj = parent;
		while ( obj != null )
		{
			list.addAll( obj.properties.values( ) );
			obj = obj.parent;
		}
		return list;
	}
	/**
	 * Gets a property definition given a property name.
	 * 
	 * @param propName
	 *            The name of the property to get.
	 * @return The property with that name, or null if the property cannot be
	 *         found.
	 */
	public IElementPropertyDefn getProperty( String propName )
	{
		assert propName != null;
		ElementDefn e = this;
		while ( e != null )
		{
			ElementPropertyDefn prop = (ElementPropertyDefn) e.properties
					.get( propName );
			if ( prop != null )
				return prop;