bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/ge/ObjectChildRule.java

   1 package org.simantics.document.linking.ge;\r
   2 \r
   3 import java.util.ArrayList;\r
   4 import java.util.Collection;\r
   5 \r
   6 import org.simantics.db.ReadGraph;\r
   7 import org.simantics.db.Resource;\r
   8 import org.simantics.db.exception.DatabaseException;\r
   9 import org.simantics.db.layer0.variable.StandardGraphChildVariable;\r
  10 import org.simantics.db.layer0.variable.Variable;\r
  11 import org.simantics.document.linking.ontology.DocumentLink;\r
  12 import org.simantics.document.linking.utils.SourceLinkUtil;\r
  13 \r
  14 /**\r
  15  * A rule for browsing document links of an object. Properties are not included.\r
  16  * \r
  17  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>\r
  18  *\r
  19  */\r
  20 public class ObjectChildRule implements org.simantics.browsing.ui.model.children.ChildRule{\r
  21         \r
  22         private boolean showOnlyCheckable = false;\r
  23         \r
  24         @Override\r
  25         public boolean isCompatible(Class<?> contentType) {\r
  26                 return contentType.equals(Resource.class) || contentType.equals(Variable.class);\r
  27         }\r
  28         \r
  29         public void setShowOnlyCheckable(boolean showOnlyCheckable) {\r
  30                 this.showOnlyCheckable = showOnlyCheckable;\r
  31         }\r
  32         \r
  33         @Override\r
  34         public Collection<?> getChildren(ReadGraph graph, Object obj)\r
  35                         throws DatabaseException {\r
  36 \r
  37                 ArrayList<Variable> children = new ArrayList<Variable>();\r
  38                 \r
  39 \r
  40                 Resource resource = null;\r
  41                 Variable variable = null;\r
  42                 if (obj instanceof Resource) {\r
  43                         resource = (Resource)obj;\r
  44                         try {\r
  45                                 variable = graph.adapt(resource, Variable.class);\r
  46                         } catch (Throwable t) {\r
  47                                 return children;\r
  48                         }\r
  49                         children.add(new StandardGraphChildVariable(variable, null, resource));\r
  50                         return children;\r
  51                 } else {\r
  52                         variable = (Variable)obj;\r
  53                         resource = variable.getPossibleRepresents(graph);\r
  54                 }\r
  55                 \r
  56         \r
  57                 DocumentLink sl = DocumentLink.getInstance(graph);\r
  58                 if (graph.isInstanceOf(resource, sl.Source))\r
  59                         return children;\r
  60                 \r
  61                 \r
  62                 //find sources declared on parentResource using consernsRelation\r
  63                 Variable parentVariable = variable.getParent(graph);\r
  64                 Resource parentRes = null;\r
  65                 Resource relation = null;\r
  66                 if (parentVariable != null) {\r
  67                         parentRes = parentVariable.getPossibleRepresents(graph);\r
  68                         relation = variable.getPossiblePredicateResource(graph);\r
  69                 }\r
  70                 \r
  71                 if (parentRes != null && relation != null) {\r
  72                         Collection<Resource> sources = graph.getObjects(parentRes, sl.hasSource);\r
  73                         for (Resource source : sources) {\r
  74                                 Resource rel = graph.getPossibleObject(source, sl.consernsRelation);\r
  75                                 if (rel != null && rel.equals(relation)) {\r
  76                                         if (showOnlyCheckable && \r
  77                                                 (SourceLinkUtil.isValidSource(graph, source) &&\r
  78                                                  SourceLinkUtil.isUpToDateSource(graph, source)))\r
  79                                                 continue;\r
  80                                         children.add(new StandardGraphChildVariable(variable, null, source));\r
  81                                 }\r
  82                         }\r
  83                 }\r
  84                 //find sources declared on this resource, ie. sources that do not have consernsRelation.\r
  85                 Collection<Resource> sources = graph.getObjects(resource, sl.hasSource);\r
  86                 for (Resource source : sources) {\r
  87                         Resource rel = graph.getPossibleObject(source, sl.consernsRelation);\r
  88                         if (rel == null) {\r
  89                                 if (showOnlyCheckable && \r
  90                                    (SourceLinkUtil.isValidSource(graph, source) &&\r
  91                                     SourceLinkUtil.isUpToDateSource(graph, source)))\r
  92                                         continue;\r
  93                                 children.add(new StandardGraphChildVariable(variable, null, source));\r
  94                         }\r
  95                 }\r
  96                 while (children.remove(variable)) {\r
  97                         \r
  98                 }\r
  99                 \r
 100 \r
 101                 return children;\r
 102         }\r
 103         \r
 104         @Override\r
 105         public Collection<?> getParents(ReadGraph graph, Object child)\r
 106                         throws DatabaseException {\r
 107                 return new ArrayList<Resource>();\r
 108         }\r
 109 \r
 110 }\r