bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/migration/MigrationSequence.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 java.util.ArrayList;
  15 import java.util.List;
  16
  17 import org.eclipse.core.runtime.IProgressMonitor;
  18 import org.simantics.db.ReadGraph;
  19 import org.simantics.db.Resource;
  20 import org.simantics.db.Session;
  21 import org.simantics.db.common.utils.ListUtils;
  22 import org.simantics.db.exception.DatabaseException;
  23 import org.simantics.utils.logging.TimeLogger;
  24
  25 public class MigrationSequence implements MigrationStep {
  26
  27         final List<MigrationStep> steps;
  28
  29         public MigrationSequence(ReadGraph graph, Resource sequence) throws DatabaseException {
  30                 steps = new ArrayList<MigrationStep>();
  31                 for(Resource step : ListUtils.toList(graph, sequence)) {
  32                         MigrationStep ms = graph.adapt(step, MigrationStep.class);
  33                         steps.add(ms);
  34                 }
  35         }
  36
  37         @Override
  38         public void applyTo(IProgressMonitor monitor, Session session, MigrationState state) throws DatabaseException {
  39                 TimeLogger.resetTimeAndLog(getClass(), "Running migration sequence");
  40                 for(MigrationStep step : steps) {
  41                         if(monitor.isCanceled()) return;
  42                         TimeLogger.log(getClass(), "Running migration step: " + step.getClass() + " (" + step + ")");
  43                         step.applyTo(monitor, session, state);
  44                         if (monitor.isCanceled()) {
  45                                 TimeLogger.log(getClass(), "Migration cancelled during step: " + step.getClass() + " (" + step + ")");
  46                                 return;
  47                         }
  48                         monitor.subTask("");
  49                         TimeLogger.log(getClass(), "Completed migration step: " + step.getClass() + " (" + step + ")");
  50                 }
  51         }
  52
  53 }