bundles/org.simantics.ui/src/org/simantics/ui/tester/CollectionResourcePropertyTester.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 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  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.ui.tester;
  13
  14 import java.util.Arrays;
  15
  16 import org.eclipse.core.expressions.PropertyTester;
  17 import org.simantics.DatabaseJob;
  18 import org.simantics.Simantics;
  19 import org.simantics.db.ReadGraph;
  20 import org.simantics.db.Resource;
  21 import org.simantics.db.common.request.UniqueRead;
  22 import org.simantics.db.common.utils.NameUtils;
  23 import org.simantics.db.common.utils.RequestUtil;
  24 import org.simantics.db.exception.DatabaseException;
  25 import org.simantics.db.exception.ResourceNotFoundException;
  26 import org.simantics.db.management.ISessionContext;
  27 import org.simantics.scl.reflection.OntologyVersions;
  28 import org.simantics.ui.SimanticsUI;
  29 import org.simantics.ui.utils.ResourceAdaptionUtils;
  30
  31 /**
  32  * @author Tuukka Lehtonen
  33  */
  34 public class CollectionResourcePropertyTester extends PropertyTester {
  35
  36     private static final boolean DEBUG = false;
  37
  38     /**
  39      * Tests if the received resource is an instance of any of the URIs
  40      * listed in the arguments.
  41      */
  42     protected static final String RESOURCE_TYPES = "resourceTypes";
  43
  44     private static final OntologyVersions VERSIONS = OntologyVersions.getInstance();
  45
  46     @Override
  47     public boolean test(final Object receiver, final String property, final Object[] args, final Object expectedValue) {
  48         if (DEBUG)
  49             System.out.println("TEST: " + receiver + ", " + property + ", " + Arrays.toString(args) + ", " + expectedValue);
  50
  51         final Resource[] resources = ResourceAdaptionUtils.toResources(receiver);
  52         if (resources == null)
  53             return false;
  54
  55         ISessionContext ctx = Simantics.getSessionContext();
  56         if (ctx == null)
  57             return false;
  58
  59         if (DatabaseJob.inProgress())
  60             return false;
  61
  62         try {
  63             return RequestUtil.trySyncRequest(
  64                     ctx.getSession(),
  65                     SimanticsUI.UI_THREAD_REQUEST_START_TIMEOUT,
  66                     SimanticsUI.UI_THREAD_REQUEST_EXECUTION_TIMEOUT,
  67                     false,
  68                     new UniqueRead<Boolean>() {
  69                 @Override
  70                 public Boolean perform(ReadGraph g) throws DatabaseException {
  71                     return Boolean.valueOf(doTest(g, resources, property, args, expectedValue));
  72                 }
  73             });
  74         } catch (DatabaseException | InterruptedException e) {
  75             // Purposefully not logging these exceptions, there might be way too
  76             // many even under normal circumstances.
  77             // TODO: add debug tracing options controlling the printing of these exceptions
  78             return false;
  79         }
  80     }
  81
  82     protected boolean doTest(ReadGraph g, Resource[] resources, String property, Object[] args, Object expectedValue) throws DatabaseException {
  83         if (RESOURCE_TYPES.equals(property)) {
  84                 loop: for(Resource r : resources) {
  85                         if (DEBUG)
  86                                 System.out.println("** " + NameUtils.getSafeName(g, r));
  87                         try {
  88                                 for (int i = 0; i < args.length; i++) {
  89                                         if (g.isInstanceOf(r, g.getResource(VERSIONS.currentVersion((String) args[i])))) {
  90                                                 if (DEBUG)
  91                                                         System.out.println("IS INSTANCE OF " + args[i]);
  92                                                 continue loop;
  93                                         }
  94                                 }
  95                         } catch (ResourceNotFoundException e) {
  96                                 /* This is a natural situation (database does not contain all resources
  97                    referred in plugins). No error reporting.
  98                                  */
  99                                 return false;
 100                         }
 101                         if (DEBUG)
 102                                 System.out.println("NOT AN INSTANCE OF ANY OF: " + Arrays.toString(args));
 103                         return false;
 104                 }
 105             return true;
 106         }
 107         return false;
 108     }
 109
 110 }