1 /*******************************************************************************
2 * Copyright (c) 2016 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 * Semantum Oy - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.db.layer0.util;
14 import java.util.Collections;
15 import java.util.List;
18 import org.simantics.datatypes.literal.GUID;
19 import org.simantics.db.ReadGraph;
20 import org.simantics.db.Resource;
21 import org.simantics.db.Statement;
22 import org.simantics.db.common.request.PossibleIndexRoot;
23 import org.simantics.db.exception.DatabaseException;
24 import org.simantics.db.layer0.adapter.impl.EntityInstances.QueryIndex;
25 import org.simantics.db.layer0.util.ConsistsOfProcess.InternalEntry;
26 import org.simantics.db.layer0.util.DomainProcessor3.ExclusionDecision;
27 import org.simantics.layer0.Layer0;
28 import org.simantics.scl.runtime.function.Function1;
31 * @author Antti Villberg
32 * @author Tuukka Lehtonen
35 public class TGRepresentationUtils {
37 public static boolean findByIdentifier(ReadGraph graph, Resource targetIndex, Resource source) throws DatabaseException {
38 Layer0 L0 = Layer0.getInstance(graph);
39 GUID guid = graph.getPossibleRelatedValue(source, L0.identifier, GUID.BINDING);
41 List<Resource> exist = graph.syncRequest(new QueryIndex(targetIndex, L0.Entity, "GUID:" + guid.indexString()));
42 return !exist.isEmpty();
47 public static Function1<Statement, ExclusionDecision> computeExclusionFunction(ReadGraph graph, Resource[] resources, Map<String,Object> hints) throws DatabaseException {
48 Resource targetResource = (Resource)hints.get(ClipboardUtils.HINT_TARGET_RESOURCE);
49 if(targetResource != null) {
50 Resource targetRoot = graph.syncRequest(new PossibleIndexRoot(targetResource));
51 if(targetRoot != null) {
52 for(Resource r : resources) {
53 Resource sourceRoot = graph.syncRequest(new PossibleIndexRoot(r));
54 // We are copying a complete index root => no need to change guids
55 if(r.equals(sourceRoot))
57 if(targetRoot.equals(sourceRoot)) {
58 // Copy into same index root => guid rewrite is needed
59 return new GUIDExclusionFunction(graph);
61 // First try the root GUID
62 if(findByIdentifier(graph, targetRoot, r))
63 return new GUIDExclusionFunction(graph);
65 // The root is OK - check everything beneath
66 List<InternalEntry> entries = ConsistsOfProcess.walk(graph, null, Collections.singleton(r), Collections.emptySet(), true);
67 for(InternalEntry entry : entries) {
68 if(findByIdentifier(graph, targetRoot, entry.resource))
69 return new GUIDExclusionFunction(graph);