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
&& nameOption == MetaDataConstants.NO_NAME )
				throw new MetaDataException( new String[]{name},
						MetaDataException.DESIGN_EXCEPTION_INVALID_NAME_OPTION );
		}
		
		
		
		
		if ( nameOption == MetaDataConstants.NO_NAME || isAbstract( ) )
			allowExtend = false;
	}
	/**
	 * Builds the style properties in this element.
	 * 
	 * @throws MetaDataException
	 */
	protected void buildStyleProperties( ) throws MetaDataException
	{
		
		
		
		addStyleProperties( );
		if ( ReportDesignConstants.EXTENDED_ITEM.equalsIgnoreCase( getName( ) ) )
		{
			List styles = MetaDataDictionary.getInstance( ).getStyle( )
					.getLocalProperties( );
			for ( int i = 0; i < styles.size( ); i++ )
			{
				String propName = ( (SystemPropertyDefn) styles.get( i ) )
						.getName( );