bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/migration/NamespaceMigrationStep.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012 Association for Decentralized Information Management in
   3  * 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  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.layer0.migration;
  13
  14 import gnu.trove.set.hash.TIntHashSet;
  15
  16 import java.util.ArrayList;
  17
  18 import org.eclipse.core.runtime.IProgressMonitor;
  19 import org.simantics.databoard.Bindings;
  20 import org.simantics.db.ReadGraph;
  21 import org.simantics.db.Resource;
  22 import org.simantics.db.Session;
  23 import org.simantics.db.common.utils.ListUtils;
  24 import org.simantics.db.exception.DatabaseException;
  25 import org.simantics.graph.query.Path;
  26 import org.simantics.graph.query.TransferableGraphConversion;
  27 import org.simantics.graph.query.UriUtils;
  28 import org.simantics.graph.refactoring.GraphRefactoringException;
  29 import org.simantics.graph.refactoring.GraphRefactoringUtils;
  30 import org.simantics.graph.refactoring.MappingSpecification;
  31 import org.simantics.graph.refactoring.MappingSpecification.MappingRule;
  32 import org.simantics.graph.representation.TransferableGraph1;
  33 import org.simantics.graph.store.IdentityStore;
  34 import org.simantics.layer0.Layer0;
  35
  36 public class NamespaceMigrationStep implements MigrationStep {
  37
  38     final ArrayList<MappingRule> rules;
  39
  40         public NamespaceMigrationStep(ReadGraph graph, Resource step) throws DatabaseException {
  41                 rules = new ArrayList<MappingRule>();
  42                 Layer0 L0 = Layer0.getInstance(graph);
  43                 for(Resource prefix : ListUtils.toList(graph, step)) {
  44                         String base = graph.getPossibleRelatedValue(prefix, L0.NamespaceMigrationStep_Prefix_base, Bindings.STRING);
  45                         String from = graph.getPossibleRelatedValue(prefix, L0.NamespaceMigrationStep_Prefix_from, Bindings.STRING);
  46                         String to = graph.getPossibleRelatedValue(prefix, L0.NamespaceMigrationStep_Prefix_to, Bindings.STRING);
  47                         if(from != null && to != null) {
  48                                 Path fromURI = UriUtils.uriToPath(base+from);
  49                                 Path toURI = UriUtils.uriToPath(base+to);
  50                                 if(fromURI != null && toURI != null)
  51                                         rules.add(new MappingRule(fromURI, toURI));
  52                                 else
  53                                         System.err.println("Namespace migration uri formation error: base " + base + " from " + from + " to " + to);
  54                         }
  55                 }
  56         }
  57
  58     @Override
  59     public void applyTo(IProgressMonitor monitor, Session session, MigrationState state) throws DatabaseException {
  60
  61         TransferableGraph1 tg = MigrationUtils.getTG(session, state);
  62
  63         try {
  64             MappingSpecification mappingSpec = new MappingSpecification(rules);
  65             boolean fixed = GraphRefactoringUtils.fixIncorrectRoot(tg.identities);
  66             System.err.println("fixed=" + fixed);
  67             IdentityStore idStore = TransferableGraphConversion.extractIdentities(tg);
  68             idStore.printChildMap();
  69 //            System.err.println("ids: " + idStore);
  70 //            System.err.println("rc: " + tg.resourceCount);
  71 //            System.err.println("idStore: " + idStore.toArray().length);
  72             TIntHashSet parentsAffected = new TIntHashSet();
  73             GraphRefactoringUtils.refactor(tg, idStore, mappingSpec, parentsAffected);
  74 //
  75             tg.resourceCount = idStore.getResourceCount();
  76
  77             tg.identities = idStore.toArray();
  78
  79             if(fixed)
  80                 GraphRefactoringUtils.unfixIncorrectRoot(tg.identities);
  81
  82             System.err.println("rc2: " + tg.resourceCount);
  83 //            System.err.println("idStore2: " + idStore.toArray().length);
  84
  85         } catch (GraphRefactoringException e) {
  86             e.printStackTrace();
  87         }
  88
  89     }
  90
  91 }