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

   1 package org.simantics.db.layer0.util;\r
   2 \r
   3 import java.util.Arrays;\r
   4 import java.util.Map;\r
   5 \r
   6 import org.simantics.db.ReadGraph;\r
   7 import org.simantics.db.RequestProcessor;\r
   8 import org.simantics.db.Resource;\r
   9 import org.simantics.db.common.request.UniqueRead;\r
  10 import org.simantics.db.exception.DatabaseException;\r
  11 import org.simantics.db.layer0.util.SimanticsClipboard.Representation;\r
  12 import org.simantics.graph.db.TransferableGraphs;\r
  13 import org.simantics.graph.representation.TransferableGraph1;\r
  14 import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
  15 \r
  16 public class TGRepresentation implements Representation {\r
  17 \r
  18         protected boolean ignoreVirtualResources = false;\r
  19         protected Resource[] resources;\r
  20         private TransferableGraph1 value = null;\r
  21         private TransferableGraphConfiguration2 configuration;\r
  22         \r
  23         public TGRepresentation(Resource ... resources) {\r
  24                 this.resources = resources;\r
  25         }\r
  26 \r
  27         public TGRepresentation(boolean ignoreVirtualResources, Resource ... resources) {\r
  28                 this.ignoreVirtualResources = ignoreVirtualResources;\r
  29                 this.resources = resources;\r
  30         }\r
  31 \r
  32         public TGRepresentation(TransferableGraphConfiguration2 configuration) {\r
  33                 this.configuration = configuration;\r
  34         }\r
  35 \r
  36         public TGRepresentation(TransferableGraph1 value) {\r
  37                 this.value = value;\r
  38         }\r
  39 \r
  40         @Override\r
  41         public Key getKey() {\r
  42                 return SimanticsKeys.KEY_TRANSFERABLE_GRAPH;\r
  43         }\r
  44         \r
  45         public TransferableGraph1 compute(ReadGraph graph, Map<String,Object> hints) throws DatabaseException {\r
  46                 \r
  47                 if(configuration == null) {\r
  48                         configuration = new TransferableGraphConfiguration2(graph, Arrays.asList(resources), ignoreVirtualResources, false);\r
  49                         configuration.exclusionFunction = TGRepresentationUtils.computeExclusionFunction(graph, resources, hints);\r
  50                 }\r
  51                 \r
  52                 ModelTransferableGraphSource source = graph.syncRequest(new ModelTransferableGraphSourceRequest(configuration));\r
  53                 return TransferableGraphs.create(graph, source);\r
  54                 \r
  55         }\r
  56         \r
  57         @SuppressWarnings("unchecked")\r
  58         @Override\r
  59         public <T> T getValue(RequestProcessor processor, Map<String,Object> hints) throws DatabaseException {\r
  60                 \r
  61                 if(value == null) {\r
  62 \r
  63                         value = processor.syncRequest(new UniqueRead<TransferableGraph1>() {\r
  64 \r
  65                                 @Override\r
  66                                 public TransferableGraph1 perform(ReadGraph graph) throws DatabaseException {\r
  67                                         return compute(graph, hints);\r
  68                                 }\r
  69 \r
  70                         });\r
  71 \r
  72                 }\r
  73                 \r
  74                 return (T)value;\r
  75                 \r
  76         }\r
  77         \r
  78 }