bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/ModelDependenciesBean.java

   1 package org.simantics.db.layer0.util;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collections;
   5 import java.util.HashSet;
   6 import java.util.LinkedList;
   7 import java.util.List;
   8 import java.util.Map;
   9 import java.util.Set;
  10
  11 import org.eclipse.core.runtime.NullProgressMonitor;
  12 import org.simantics.databoard.Bindings;
  13 import org.simantics.databoard.adapter.AdaptException;
  14 import org.simantics.databoard.binding.Binding;
  15 import org.simantics.databoard.binding.mutable.Variant;
  16 import org.simantics.db.ReadGraph;
  17 import org.simantics.db.Resource;
  18 import org.simantics.db.common.request.ObjectsWithType;
  19 import org.simantics.db.exception.DatabaseException;
  20 import org.simantics.db.layer0.adapter.CopyHandler;
  21 import org.simantics.db.layer0.migration.MigrationState;
  22 import org.simantics.db.layer0.migration.MigrationStateKeys;
  23 import org.simantics.db.layer0.util.SimanticsClipboard.Representation;
  24 import org.simantics.graph.representation.TransferableGraph1;
  25 import org.simantics.layer0.Layer0;
  26
  27 public class ModelDependenciesBean {
  28
  29         public static final String EXTENSION_KEY = ModelDependenciesBean.class.getSimpleName();
  30
  31         public static final Binding BINDING = Bindings.getBindingUnchecked(ModelDependenciesBean.class);
  32
  33         public ModelDependency[] dependencies;
  34
  35         public ModelDependenciesBean() {
  36                 dependencies = new ModelDependency[0];
  37         }
  38
  39         public ModelDependenciesBean(ModelDependency[] dependencies) {
  40                 this.dependencies = dependencies;
  41         }
  42
  43         /*
  44          * Returns the linked shared ontologies in topological order.
  45          */
  46         public static List<Resource> collectDependencies(ReadGraph graph, Resource resource) throws DatabaseException {
  47                 LinkedList<Resource> order = new LinkedList<>();
  48                 collectDependencies(graph, resource, order, new HashSet<>());
  49                 return order;
  50         }
  51
  52         private static void collectDependencies(ReadGraph graph, Resource resource, LinkedList<Resource> order, Set<Resource> visited) throws DatabaseException {
  53                 Layer0 L0 = Layer0.getInstance(graph);
  54                 for(Resource library : graph.syncRequest(new ObjectsWithType(resource, L0.IsLinkedTo, L0.SharedOntology))) {
  55                         if (order.contains(library)) continue;
  56                         if (visited.contains(library)) throw new DatabaseException("Cyclic dependency detected.");
  57                         visited.add(library);
  58                         collectDependencies(graph, library, order, visited);
  59                         order.addFirst(library);
  60                 }
  61         }
  62
  63         private static List<ModelDependency> collectModelDependencies(ReadGraph graph, Resource resource) throws DatabaseException {
  64                 List<Resource> order = collectDependencies(graph, resource);
  65                 Collections.reverse(order);
  66
  67                 List<ModelDependency> modelDependencies = new ArrayList<>(order.size());
  68
  69                 for (Resource library : order) {
  70                         String uri = graph.getPossibleURI(library);
  71                         if(uri == null) continue;
  72                         CopyHandler ch = graph.adapt(library, CopyHandler.class);
  73                         SimanticsClipboardImpl clipboard = new SimanticsClipboardImpl();
  74                         ch.copyToClipboard(graph, clipboard, new NullProgressMonitor());
  75                         for (Set<Representation> object : clipboard.getContents()) {
  76                                 TransferableGraph1 tg = ClipboardUtils.accept(graph, object, SimanticsKeys.KEY_TRANSFERABLE_GRAPH);
  77                                 if(tg != null) {
  78                                         modelDependencies.add(new ModelDependency(uri, tg));
  79                                 }
  80                         }
  81                 }
  82                 return modelDependencies;
  83         }
  84
  85         public static ModelDependenciesBean create(ReadGraph graph, Resource resource) throws DatabaseException {
  86                 List<ModelDependency> dependencies = collectModelDependencies(graph, resource);
  87                 return new ModelDependenciesBean(dependencies.toArray(new ModelDependency[dependencies.size()]));
  88         }
  89
  90         public static ModelDependenciesBean fromMigrationState(MigrationState state) throws DatabaseException, AdaptException {
  91                 Map<String,Variant> extensions = state.getProperty(MigrationStateKeys.TG_EXTENSIONS);
  92                 final Variant variant = extensions.get(ModelDependenciesBean.EXTENSION_KEY);
  93                 return variant != null ? (ModelDependenciesBean) variant.getValue(ModelDependenciesBean.BINDING) : null;
  94         }
  95
  96 }