bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/UnescapedAssertedPropertyMapOfResource.java

   1 /*******************************************************************************
   2  * Copyright (c) 2017 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   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
   8  *
   9  * Contributors:
  10  *     Semantum Oy - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.layer0.request;
  13
  14  import gnu.trove.map.hash.THashMap;
  15
  16 import java.util.Collection;
  17 import java.util.Map;
  18
  19 import org.simantics.db.ReadGraph;
  20 import org.simantics.db.Resource;
  21 import org.simantics.db.Statement;
  22 import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
  23 import org.simantics.db.common.request.ResourceRead;
  24 import org.simantics.db.exception.DatabaseException;
  25 import org.simantics.layer0.Layer0;
  26 import org.simantics.utils.datastructures.Pair;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 /**
  31  * @author Tuukka Lehtonen
  32  * @since 1.27.0
  33  */
  34 public class UnescapedAssertedPropertyMapOfResource extends ResourceRead<Map<String, Pair<PropertyInfo, Resource>>> {
  35
  36         private static final Logger LOGGER = LoggerFactory.getLogger(UnescapedAssertedPropertyMapOfResource.class);
  37
  38         public UnescapedAssertedPropertyMapOfResource(Resource resource) {
  39                 super(resource);
  40         }
  41
  42         @Override
  43         public Map<String,Pair<PropertyInfo, Resource>> perform(ReadGraph graph) throws DatabaseException {
  44                 Layer0 L0 = Layer0.getInstance(graph);
  45                 Collection<Statement> assertions = graph.getAssertedStatements(resource, L0.HasProperty);
  46                 THashMap<String, Pair<PropertyInfo, Resource>> result = new THashMap<>(assertions.size());
  47                 for (Statement stm : assertions) {
  48                         PropertyInfo info = graph.syncRequest(new PropertyInfoRequest(stm.getPredicate()), TransientCacheAsyncListener.<PropertyInfo>instance());
  49                         if (info != null && info.isHasProperty) {
  50                                 String name = info.name;
  51                                 // Use putIfAbsent because we want to prefer the results that are first,
  52                                 // i.e. the ones deeper in the type inheritance chain.
  53                                 if (result.putIfAbsent(name, Pair.make(info, stm.getObject())) != null) {
  54                                         if (LOGGER.isDebugEnabled()) {
  55                                                 LOGGER.debug(this + ": The database resource $" + resource.getResourceId()
  56                                                                 + " asserts the multiple properties with the same name " + name + " (resource=$"
  57                                                                 + info.predicate.getResourceId() + ").");
  58                                         }
  59                                 }
  60                         }
  61                 }
  62                 return result;
  63         }
  64
  65 }