org.simantics.interop/src/org/simantics/interop/stubs/InteropResource.java

   1 package org.simantics.interop.stubs;\r
   2 \r
   3 import org.simantics.db.Resource;\r
   4 import org.simantics.db.ReadGraph;\r
   5 import org.simantics.db.request.Read;\r
   6 import org.simantics.db.Session;\r
   7 import org.simantics.db.exception.DatabaseException;\r
   8 \r
   9 public class InteropResource {\r
  10     \r
  11     public final Resource HasDestination;\r
  12     public final Resource HasImportData;\r
  13     public final Resource HasSource;\r
  14     public final Resource ImportDataOf;\r
  15     public final Resource ImportLibrary;\r
  16         \r
  17     public static class URIs {\r
  18         public static final String HasDestination = "http://www.simantics.org/Interop-1.0/HasDestination";\r
  19         public static final String HasImportData = "http://www.simantics.org/Interop-1.0/HasImportData";\r
  20         public static final String HasSource = "http://www.simantics.org/Interop-1.0/HasSource";\r
  21         public static final String ImportDataOf = "http://www.simantics.org/Interop-1.0/ImportDataOf";\r
  22         public static final String ImportLibrary = "http://www.simantics.org/Interop-1.0/ImportLibrary";\r
  23     }\r
  24     \r
  25     public static Resource getResourceOrNull(ReadGraph graph, String uri) {\r
  26         try {\r
  27             return graph.getResource(uri);\r
  28         } catch(DatabaseException e) {\r
  29             System.err.println(e.getMessage());\r
  30             return null;\r
  31         }\r
  32     }\r
  33     \r
  34     public InteropResource(ReadGraph graph) {\r
  35         HasDestination = getResourceOrNull(graph, URIs.HasDestination);\r
  36         HasImportData = getResourceOrNull(graph, URIs.HasImportData);\r
  37         HasSource = getResourceOrNull(graph, URIs.HasSource);\r
  38         ImportDataOf = getResourceOrNull(graph, URIs.ImportDataOf);\r
  39         ImportLibrary = getResourceOrNull(graph, URIs.ImportLibrary);\r
  40     }\r
  41     \r
  42     public static InteropResource getInstance(ReadGraph graph) {\r
  43         Session session = graph.getSession();\r
  44         InteropResource ret = session.peekService(InteropResource.class);\r
  45         if(ret == null) {\r
  46             ret = new InteropResource(graph);\r
  47             session.registerService(InteropResource.class, ret);\r
  48         }\r
  49         return ret;\r
  50     }\r
  51     \r
  52     public static InteropResource getInstance(Session session) throws DatabaseException {\r
  53         InteropResource ret = session.peekService(InteropResource.class);\r
  54         if(ret == null) {\r
  55             ret = session.syncRequest(new Read<InteropResource>() {\r
  56                 public InteropResource perform(ReadGraph graph) throws DatabaseException {\r
  57                     return new InteropResource(graph);\r
  58                 }\r
  59             });\r
  60             session.registerService(InteropResource.class, ret);\r
  61         }\r
  62         return ret;\r
  63     }\r
  64     \r
  65 }\r
  66 \r