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
for ( int i = 0; i < styleProperties.size( ); i++ )
			{
				PropertyDefn prop = (PropertyDefn) styleProperties.get( i );
				
				
				
				if ( ReportDesignConstants.ROW_ELEMENT.equalsIgnoreCase( name ) )
					if ( IStyleModel.PAGE_BREAK_AFTER_PROP
							.equalsIgnoreCase( prop.getName( ) )
							|| IStyleModel.PAGE_BREAK_BEFORE_PROP
									.equalsIgnoreCase( prop.getName( ) )
							|| IStyleModel.PAGE_BREAK_INSIDE_PROP
									.equalsIgnoreCase( prop.getName( ) ) )
						continue;
				properties.put( prop.getName( ), prop );
			}
		}
		else
		{
			if ( stylePropertyNames == null )
				return;
			ElementDefn style = (ElementDefn) MetaDataDictionary.getInstance( )
					.getStyle( );
			
			
			for ( int i = 0; i < stylePropertyNames.size( ); i++ )
			{
				String propName = (String) stylePropertyNames.get( i );
				
				if ( getProperty( propName ) != null )