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