bundles/org.simantics.db.common/src/org/simantics/db/common/procedure/single/wrapper/ExceptionToNullProcedure.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.db.common.procedure.single.wrapper;\r
  13 \r
  14 import org.simantics.db.AsyncReadGraph;\r
  15 import org.simantics.db.procedure.AsyncProcedure;\r
  16 \r
  17 final public class ExceptionToNullProcedure<Result> implements AsyncProcedure<Result> {\r
  18 \r
  19         final private AsyncProcedure<Result> procedure;\r
  20         \r
  21     public ExceptionToNullProcedure(AsyncProcedure<Result> procedure) {\r
  22         this.procedure = procedure;\r
  23     }\r
  24     \r
  25     @Override\r
  26     public void execute(AsyncReadGraph graph, Result result) {\r
  27         procedure.execute(graph, result);\r
  28     }\r
  29         \r
  30     \r
  31     @Override\r
  32     public void exception(AsyncReadGraph graph, Throwable t) {\r
  33         procedure.execute(graph, null);\r
  34     }\r
  35     \r
  36     @Override\r
  37     public String toString() {\r
  38         return "ExceptionToNullProcedure -> " + procedure;\r
  39     }\r
  40 \r
  41 }\r