Bug 177091 Can't access stored procedure defined in Oracle Package
1.setup an oracle connection 2.try to call a stored procedure defined in package
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
data += i != selection.length - 1 ? "," : "";
			}
			event.data = data;
		}
	}
	/**
	 * Adds drop support to viewer.Must set viewer before execution.
	 *  
	 */
	public void addDropSupportToViewer( )
	{
		final StyledText text = viewer.getTextWidget( );
		DropTarget dropTarget = new DropTarget( text, DND.DROP_COPY
				| DND.DROP_DEFAULT );
		dropTarget.setTransfer( new Transfer[]{
			TextTransfer.getInstance( )
		} );
		dropTarget.addDropListener( new DropTargetAdapter( ) {
			public void dragEnter( DropTargetEvent event )
			{
				text.setFocus( );
				if ( event.detail == DND.DROP_DEFAULT )
					event.detail = DND.DROP_COPY;
				if ( event.detail != DND.DROP_COPY )
					event.detail = DND.DROP_NONE;
			}
			public void dragOver( DropTargetEvent event )
			{
				event.feedback = DND.FEEDBACK_SCROLL | DND.FEEDBACK_SELECT;
			}