bundles/org.simantics.debug.browser/src/org/simantics/debug/browser/internal/rewriters/BreadcrumbCreator.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2016 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     THTH ry - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.debug.browser.internal.rewriters;\r
  13 \r
  14 import java.util.ArrayList;\r
  15 \r
  16 import org.simantics.databoard.Bindings;\r
  17 import org.simantics.db.ReadGraph;\r
  18 import org.simantics.db.Resource;\r
  19 import org.simantics.db.Statement;\r
  20 import org.simantics.db.exception.DatabaseException;\r
  21 import org.simantics.debug.browser.content.ResourceBrowserContent;\r
  22 import org.simantics.debug.browser.content.ResourceBrowserRewriter;\r
  23 import org.simantics.debug.browser.sections.BreadcrumbSection;\r
  24 import org.simantics.debug.browser.sections.RawStatementsSection;\r
  25 import org.simantics.debug.browser.sections.BreadcrumbSection.Node;\r
  26 import org.simantics.layer0.Layer0;\r
  27 \r
  28 public enum BreadcrumbCreator implements ResourceBrowserRewriter {\r
  29     INSTANCE;\r
  30 \r
  31     @Override\r
  32     public void rewrite(ReadGraph graph, ResourceBrowserContent content)\r
  33             throws DatabaseException {\r
  34         ArrayList<Node> nodes = new ArrayList<Node>();\r
  35         collectBreadcrumbs(graph, nodes, content.resource);\r
  36         if(!nodes.isEmpty()) {\r
  37             content.putSection(BreadcrumbSection.class,\r
  38                     new BreadcrumbSection(nodes.toArray(new Node[nodes.size()])));\r
  39             \r
  40             Layer0 L0 = Layer0.getInstance(graph);\r
  41             RawStatementsSection rawStatementsSection = content.getSection(RawStatementsSection.class);\r
  42             rawStatementsSection.statementsByPredicates.remove(L0.HasName);\r
  43             rawStatementsSection.statementsByPredicates.remove(L0.PartOf);\r
  44         }\r
  45     }\r
  46 \r
  47     private static void collectBreadcrumbs(ReadGraph graph, ArrayList<Node> nodes,\r
  48             Resource resource) throws DatabaseException {\r
  49         if(resource.equals(graph.getRootLibrary())) {\r
  50             nodes.add(new Node("", "http:/", resource.getResourceId()));\r
  51             return;\r
  52         }\r
  53         Layer0 L0 = Layer0.getInstance(graph);\r
  54         Resource parent = graph.getPossibleObject(resource, L0.PartOf);\r
  55         if(parent != null) {\r
  56             collectBreadcrumbs(graph, nodes, parent);\r
  57             String name = graph.getPossibleRelatedValue(resource, L0.HasName, Bindings.STRING);\r
  58             if(name != null)\r
  59                 nodes.add(new Node("/", name, resource.getResourceId()));\r
  60             else\r
  61                 nodes.add(new Node("/", String.valueOf(resource.getResourceId()), resource.getResourceId()));\r
  62             return;\r
  63         }\r
  64         Statement propertyInverseStatement = graph.getPossibleStatement(resource, L0.PropertyOf);\r
  65         if(propertyInverseStatement != null) {\r
  66             collectBreadcrumbs(graph, nodes, propertyInverseStatement.getObject());\r
  67             String name = graph.getPossibleRelatedValue(graph.getInverse(propertyInverseStatement.getPredicate()),\r
  68                     L0.HasName, Bindings.STRING);\r
  69             nodes.add(new Node("#", name, resource.getResourceId()));\r
  70             return;\r
  71         }\r
  72         Resource assertion = graph.getPossibleObject(resource, L0.HasObjectInverse);\r
  73         if(assertion != null) {\r
  74             parent = graph.getPossibleObject(assertion, L0.Asserts_Inverse);\r
  75             if(parent != null) {\r
  76                 collectBreadcrumbs(graph, nodes, parent);\r
  77                 Resource predicate = graph.getPossibleObject(assertion, L0.HasPredicate);\r
  78                 String name = predicate == null ? null \r
  79                         : (String)graph.getPossibleRelatedValue(predicate, L0.HasName, Bindings.STRING);\r
  80                 if(name != null)\r
  81                     nodes.add(new Node("#assertion#", name, resource.getResourceId()));\r
  82                 else\r
  83                     nodes.add(new Node("#assertion#", String.valueOf(resource.getResourceId()), resource.getResourceId()));\r
  84                 return;\r
  85             }\r
  86         }\r
  87     }\r
  88 \r
  89     @Override\r
  90     public double getPriority() {\r
  91         return 1;\r
  92     }\r
  93 }\r