Bug 198604 After refresh the library, the link groups key are changed in cube builder[1101]
Description: After refresh the library, the link groups key are changed in cube builder[1101] Build number: 2.2.1.v20070802-0630 Steps to reproduce: 1, New a cube in library, the cube has a joint key between dimension table and facttable 2, Using the cube in a report design 3, Check the joint status in link group 4, Refresh the library in outline 5, Recheck the joint staus in link group Expected result: After step5, the joint status are correct and as same as the status in library Actual result: The dimension table is missing and the joint key is disconnected
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/util/ElementStructureUtil.java
DesignElement parent = element.getExtendsElement( );
		if ( parent == null )
			return;
		duplicateProperties( parent, element );
		ContentIterator iter1 = new ContentIterator( module, parent );
		ContentIterator iter2 = new ContentIterator( module, element );
		while ( iter1.hasNext( ) )
		{
			DesignElement virtualParent = (DesignElement) iter1.next( );
			DesignElement virtualChild = (DesignElement) iter2.next( );
			duplicateProperties( virtualParent, virtualChild );
		}
	}
	/**
	 * Duplicates some properties in a design element when to export it.
	 * 
	 * @param from
	 *            the from element to get the property values
	 * @param to
	 *            the to element to duplicate the property values
	 */
	private static void duplicateProperties( DesignElement from,
			DesignElement to )
	{
		if ( from.getDefn( ).allowsUserProperties( ) )
		{
			Iterator iter = from.getUserProperties( ).iterator( );
			while ( iter.hasNext( ) )
			{
				UserPropertyDefn userPropDefn = (UserPropertyDefn) iter.next( );