bundles/org.simantics.document.server/src/org/simantics/document/server/handler/WriteEventHandler.java

   1 package org.simantics.document.server.handler;\r
   2 \r
   3 import org.simantics.Simantics;\r
   4 import org.simantics.db.WriteGraph;\r
   5 import org.simantics.db.common.request.WriteResultRequest;\r
   6 import org.simantics.db.exception.DatabaseException;\r
   7 import org.simantics.document.server.io.CommandContext;\r
   8 import org.simantics.document.server.io.CommandResult;\r
   9 import org.simantics.document.server.serverResponse.Error;\r
  10 import org.simantics.document.server.serverResponse.IDelayedResponse;\r
  11 \r
  12 public abstract class WriteEventHandler extends AbstractEventHandler {\r
  13 \r
  14     protected abstract CommandResult handle(WriteGraph graph, CommandContext parameters) throws DatabaseException;\r
  15 \r
  16     public CommandResult handle(final CommandContext parameters) {\r
  17         try {\r
  18                 CommandResult response = Simantics.getSession().syncRequest(new WriteResultRequest<CommandResult>() {\r
  19                 @Override\r
  20                 public CommandResult perform(WriteGraph graph) throws DatabaseException {\r
  21                     graph.markUndoPoint();\r
  22                     return handle(graph, parameters);\r
  23                 }\r
  24             });\r
  25 \r
  26             if(response instanceof IDelayedResponse && !(((IDelayedResponse)response).hasRun())) {\r
  27                 try {\r
  28                     synchronized(response) {\r
  29                         response.wait(200000);\r
  30                     }\r
  31                 } catch (InterruptedException e) {\r
  32                     e.printStackTrace();\r
  33                 }\r
  34             }\r
  35             \r
  36             return response;\r
  37         } catch (DatabaseException e) {\r
  38             e.printStackTrace();\r
  39             return new Error(e.getMessage()); // Return some error\r
  40         }\r
  41     }\r
  42 \r
  43 \r
  44 }\r