bundles/org.simantics.debug.browser/src/org/simantics/debug/browser/utils/StatementInfo.java

   1 /*******************************************************************************
   2  * Copyright (c) 2016 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  *     THTH ry - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.debug.browser.utils;
  13
  14 import java.util.Arrays;
  15 import java.util.Collection;
  16
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.Resource;
  19 import org.simantics.db.Statement;
  20 import org.simantics.db.VirtualGraph;
  21 import org.simantics.db.exception.DatabaseException;
  22 import org.simantics.db.service.VirtualGraphSupport;
  23
  24 public class StatementInfo implements Comparable<StatementInfo> {
  25     public final ResourceInfo subject; // null, if not asserted
  26     public final ResourceInfo object;
  27     public final ResourceInfo[] objectTypes;
  28     public final String graph; // null, if in DB
  29
  30     public StatementInfo(ReadGraph graph, Resource defaultSubject, Statement statement) throws DatabaseException {
  31         Resource subject = statement.getSubject();
  32         Resource predicate = statement.getPredicate();
  33         Resource object = statement.getObject();
  34         Collection<Resource> objectTypes = graph.getPrincipalTypes(object);
  35
  36         if(subject.equalsResource(defaultSubject))
  37             this.subject = null;
  38         else
  39             this.subject = new ResourceInfo(graph, subject);
  40         this.object = new ResourceInfo(graph, object);
  41         if(objectTypes.isEmpty())
  42             this.objectTypes = null;
  43         else
  44             this.objectTypes = mapTypes(graph, objectTypes);
  45         this.graph = getGraphName(graph, subject, predicate, object);
  46     }
  47
  48
  49     private static ResourceInfo[] mapTypes(ReadGraph graph, Collection<Resource> types) throws DatabaseException {
  50         ResourceInfo[] result = new ResourceInfo[types.size()];
  51         int i=0;
  52         for(Resource type : types)
  53             result[i++] = new ResourceInfo(graph, type);
  54         Arrays.sort(result);
  55         return result;
  56     }
  57
  58
  59     public static String getGraphName(ReadGraph graph, Resource s, Resource p, Resource o) throws DatabaseException {
  60         VirtualGraphSupport vgs = graph.getService(VirtualGraphSupport.class);
  61         VirtualGraph vg = vgs.getGraph(graph, s, p, o);
  62         if(vg != null)
  63             return vg.toString();
  64         else
  65             return null;
  66     }
  67
  68     @Override
  69     public int compareTo(StatementInfo o) {
  70         return object.compareTo(o.object);
  71     }
  72 }