bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/TGRepresentationUtils.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2016 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
   8  *\r
   9  * Contributors:\r
  10  *     Semantum Oy - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.db.layer0.util;\r
  13 \r
  14 import java.util.Collections;\r
  15 import java.util.List;\r
  16 import java.util.Map;\r
  17 \r
  18 import org.simantics.datatypes.literal.GUID;\r
  19 import org.simantics.db.ReadGraph;\r
  20 import org.simantics.db.Resource;\r
  21 import org.simantics.db.Statement;\r
  22 import org.simantics.db.common.request.PossibleIndexRoot;\r
  23 import org.simantics.db.exception.DatabaseException;\r
  24 import org.simantics.db.layer0.adapter.impl.EntityInstances.QueryIndex;\r
  25 import org.simantics.db.layer0.util.DomainProcessor3.ExclusionDecision;\r
  26 import org.simantics.layer0.Layer0;\r
  27 import org.simantics.scl.runtime.function.Function1;\r
  28 \r
  29 /**\r
  30  * @author Antti Villberg\r
  31  * @author Tuukka Lehtonen\r
  32  * @since 1.22\r
  33  */\r
  34 public class TGRepresentationUtils {\r
  35 \r
  36     public static boolean findByIdentifier(ReadGraph graph, Resource targetIndex, Resource source) throws DatabaseException {\r
  37         Layer0 L0 = Layer0.getInstance(graph);\r
  38         GUID guid = graph.getPossibleRelatedValue(source, L0.identifier, GUID.BINDING);\r
  39         if(guid != null) {\r
  40             List<Resource> exist = graph.syncRequest(new QueryIndex(targetIndex, L0.Entity, "GUID:" + guid.indexString()));\r
  41             return !exist.isEmpty();\r
  42         }\r
  43         return false;\r
  44     }\r
  45 \r
  46     public static Function1<Statement, ExclusionDecision> computeExclusionFunction(ReadGraph graph, Resource[] resources, Map<String,Object> hints) throws DatabaseException {\r
  47         Resource targetResource = (Resource)hints.get(ClipboardUtils.HINT_TARGET_RESOURCE);\r
  48         if(targetResource != null) {\r
  49             Resource targetRoot = graph.syncRequest(new PossibleIndexRoot(targetResource));\r
  50             if(targetRoot != null) {\r
  51                 for(Resource r : resources) {\r
  52                     Resource sourceRoot = graph.syncRequest(new PossibleIndexRoot(r));\r
  53                     // We are copying a complete index root => no need to change guids\r
  54                     if(r.equals(sourceRoot))\r
  55                         continue;\r
  56                     if(targetRoot.equals(sourceRoot)) {\r
  57                         // Copy into same index root => guid rewrite is needed\r
  58                         return new GUIDExclusionFunction(graph);\r
  59                     }\r
  60                     // First try the root GUID\r
  61                     if(findByIdentifier(graph, targetRoot, r))\r
  62                         return new GUIDExclusionFunction(graph);\r
  63 \r
  64                     // The root is OK - check everything beneath\r
  65                     for(Resource part : ConsistsOfProcess.walk(graph, Collections.singleton(r), Collections.emptySet(), true)) {\r
  66                         if(findByIdentifier(graph, targetRoot, part))\r
  67                             return new GUIDExclusionFunction(graph);\r
  68                     }\r
  69                 }\r
  70             }\r
  71         }\r
  72 \r
  73         return null;\r
  74     }\r
  75 \r
  76 }\r