Bug 122869 Drag a parameter from data explorer view into a table in library, a new parameter is created automatically.
Description:Drag a parameter from data explorer view into a table in library, a new parameter is created automatically. Steps to reproduce: 1. Add a cascading parameter and a table in a library file. 2. Drag a parameter from data explorer view into a table cell in layout editor. 3. Find that a new parameter was added in data explorer view automatically.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/ExpressionTreeSupport.java
return ReportPlatformUIImages.getImage( id );
	}
	private void createObjects( TreeItem topItem, String objectType )
	{
		for ( Iterator itor = DesignEngine.getMetaDataDictionary( )
				.getClasses( )
				.iterator( ); itor.hasNext( ); )
		{
			IClassInfo classInfo = (IClassInfo) itor.next( );
			if ( classInfo.isNative( )
					&& OBJECTS_TYPE_BIRT.equals( objectType )
					|| !classInfo.isNative( )
					&& OBJECTS_TYPE_NATIVE.equals( objectType ) )
			{
				continue;
			}
			TreeItem subItem = createSubFolderItem( topItem, classInfo );
			Image globalImage = null;
			if ( isGlobal( classInfo.getName( ) ) )
			{
				globalImage = IMAGE_GOLBAL;
			}
			
			for ( Iterator iterator = classInfo.getMembers( ).iterator( ); iterator.hasNext( ); )
			{
				IMemberInfo memberInfo = (IMemberInfo) iterator.next( );
				Image image = globalImage;
				if ( image == null )
				{
					if ( memberInfo.isStatic( ) )