bundles/org.simantics.debug.browser/src/org/simantics/debug/browser/internal/rewriters/BreadcrumbCreator.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.internal.rewriters;
  13
  14 import java.util.ArrayList;
  15
  16 import org.simantics.databoard.Bindings;
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.Resource;
  19 import org.simantics.db.Statement;
  20 import org.simantics.db.exception.DatabaseException;
  21 import org.simantics.debug.browser.content.ResourceBrowserContent;
  22 import org.simantics.debug.browser.content.ResourceBrowserRewriter;
  23 import org.simantics.debug.browser.sections.BreadcrumbSection;
  24 import org.simantics.debug.browser.sections.RawStatementsSection;
  25 import org.simantics.debug.browser.sections.BreadcrumbSection.Node;
  26 import org.simantics.layer0.Layer0;
  27
  28 public enum BreadcrumbCreator implements ResourceBrowserRewriter {
  29     INSTANCE;
  30
  31     @Override
  32     public void rewrite(ReadGraph graph, ResourceBrowserContent content)
  33             throws DatabaseException {
  34         ArrayList<Node> nodes = new ArrayList<Node>();
  35         collectBreadcrumbs(graph, nodes, content.resource);
  36         if(!nodes.isEmpty()) {
  37             content.putSection(BreadcrumbSection.class,
  38                     new BreadcrumbSection(nodes.toArray(new Node[nodes.size()])));
  39
  40             Layer0 L0 = Layer0.getInstance(graph);
  41             RawStatementsSection rawStatementsSection = content.getSection(RawStatementsSection.class);
  42             rawStatementsSection.statementsByPredicates.remove(L0.HasName);
  43             rawStatementsSection.statementsByPredicates.remove(L0.PartOf);
  44         }
  45     }
  46
  47     private static void collectBreadcrumbs(ReadGraph graph, ArrayList<Node> nodes,
  48             Resource resource) throws DatabaseException {
  49         if(resource.equals(graph.getRootLibrary())) {
  50             nodes.add(new Node("", "http:/", resource.getResourceId()));
  51             return;
  52         }
  53         Layer0 L0 = Layer0.getInstance(graph);
  54         Resource parent = graph.getPossibleObject(resource, L0.PartOf);
  55         if(parent != null) {
  56             collectBreadcrumbs(graph, nodes, parent);
  57             String name = graph.getPossibleRelatedValue(resource, L0.HasName, Bindings.STRING);
  58             if(name != null)
  59                 nodes.add(new Node("/", name, resource.getResourceId()));
  60             else
  61                 nodes.add(new Node("/", String.valueOf(resource.getResourceId()), resource.getResourceId()));
  62             return;
  63         }
  64         Statement propertyInverseStatement = graph.getPossibleStatement(resource, L0.PropertyOf);
  65         if(propertyInverseStatement != null) {
  66             collectBreadcrumbs(graph, nodes, propertyInverseStatement.getObject());
  67             String name = graph.getPossibleRelatedValue(graph.getInverse(propertyInverseStatement.getPredicate()),
  68                     L0.HasName, Bindings.STRING);
  69             nodes.add(new Node("#", name, resource.getResourceId()));
  70             return;
  71         }
  72         Resource assertion = graph.getPossibleObject(resource, L0.HasObjectInverse);
  73         if(assertion != null) {
  74             parent = graph.getPossibleObject(assertion, L0.Asserts_Inverse);
  75             if(parent != null) {
  76                 collectBreadcrumbs(graph, nodes, parent);
  77                 Resource predicate = graph.getPossibleObject(assertion, L0.HasPredicate);
  78                 String name = predicate == null ? null
  79                         : (String)graph.getPossibleRelatedValue(predicate, L0.HasName, Bindings.STRING);
  80                 if(name != null)
  81                     nodes.add(new Node("#assertion#", name, resource.getResourceId()));
  82                 else
  83                     nodes.add(new Node("#assertion#", String.valueOf(resource.getResourceId()), resource.getResourceId()));
  84                 return;
  85             }
  86         }
  87     }
  88
  89     @Override
  90     public double getPriority() {
  91         return 1;
  92     }
  93 }