1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.db.layer0.adapter;
16 import org.simantics.db.ReadGraph;
17 import org.simantics.db.WriteGraph;
18 import org.simantics.db.exception.DatabaseException;
19 import org.simantics.db.layer0.adapter.impl.AbstractRemover;
20 import org.simantics.db.layer0.util.RemoverUtil;
23 * This is a preliminary interface for making resource removal adapter-driven.
24 * Adapt a resource to {@link Remover} to specify a custom logic for removing a
25 * certain resource or a certain type of resource. A Remover is not reusable to
26 * prevent it from being reused invalidly for unexpected inputs.
28 * @author Tuukka Lehtonen
30 * @see AbstractRemover
33 public interface Remover {
37 * @param aux auxiliary data storage that may be used when invoking
38 * {@link #canRemove(ReadGraph, Map)} recursively
39 * @return <code>null</code> indicates removal ok, otherwise the result
40 * describes the problems.
41 * @throws DatabaseException
44 String canRemove(ReadGraph graph, Map<Object, Object> aux) throws DatabaseException;
48 * @throws DatabaseException
50 void remove(WriteGraph graph) throws DatabaseException;