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
private List getPropertyListWithType( List propList, int type )
	{
		List props = new ArrayList( );
		Iterator iter = propList.iterator( );
		while ( iter.hasNext( ) )
		{
			PropertyDefn propDefn = (PropertyDefn) iter.next( );
			if ( propDefn.getTypeCode( ) == type )
			{
				props.add( propDefn );
			}
		}
		return props;
	}
	/**
	 * Caches meta-data for this element. Resolves the parent name and so on.
	 * 
	 * @throws MetaDataException
	 *             if any build process failed.
	 * 
	 */
	protected void build( ) throws MetaDataException
	{
		if ( isBuilt )
			return;
		buildDefn( );
		
		
		buildProperties( );
		buildStyleProperties( );