bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/util/TGSourceRepresentation.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.TransferableGraphSource;\r
  13 import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
  14 \r
  15 public class TGSourceRepresentation implements Representation {\r
  16 \r
  17         protected Resource[] resources;\r
  18         protected boolean ignoreVirtualResources = false;\r
  19         private TransferableGraphSource value = null;\r
  20         private TransferableGraphConfiguration2 configuration;\r
  21         \r
  22         public TGSourceRepresentation(Resource ... resources) {\r
  23                 this.resources = resources;\r
  24         }\r
  25 \r
  26         public TGSourceRepresentation(boolean ignoreVirtualResources, Resource ... resources) {\r
  27                 this.ignoreVirtualResources = ignoreVirtualResources;\r
  28                 this.resources = resources;\r
  29         }\r
  30 \r
  31         public TGSourceRepresentation(TransferableGraphConfiguration2 configuration) {\r
  32                 this.configuration = configuration;\r
  33         }\r
  34 \r
  35         public TGSourceRepresentation(TransferableGraphSource value) {\r
  36                 this.value = value;\r
  37         }\r
  38 \r
  39         @Override\r
  40         public Key getKey() {\r
  41                 return SimanticsKeys.KEY_TRANSFERABLE_GRAPH_SOURCE;\r
  42         }\r
  43 \r
  44         public TransferableGraphSource compute(ReadGraph graph, Map<String,Object> hints) throws DatabaseException {\r
  45                 \r
  46                 if(configuration == null) {\r
  47                         configuration = new TransferableGraphConfiguration2(graph, Arrays.asList(resources), ignoreVirtualResources, false);\r
  48                         configuration.exclusionFunction = TGRepresentationUtils.computeExclusionFunction(graph, resources, hints);\r
  49                 }\r
  50                 \r
  51                 return graph.syncRequest(new ModelTransferableGraphSourceRequest(configuration));\r
  52                 \r
  53         }\r
  54 \r
  55         @SuppressWarnings("unchecked")\r
  56         @Override\r
  57         public <T> T getValue(RequestProcessor processor, Map<String,Object> hints) throws DatabaseException {\r
  58                 \r
  59                 if(value == null) {\r
  60                         value = processor.syncRequest(new UniqueRead<TransferableGraphSource>() {\r
  61 \r
  62                                 @Override\r
  63                                 public TransferableGraphSource perform(ReadGraph graph) throws DatabaseException {\r
  64                                         return compute(graph, hints);\r
  65                                 }\r
  66 \r
  67                         });\r
  68                 }\r
  69                 \r
  70                 return (T)value;\r
  71                 \r
  72         }\r
  73         \r
  74 }