bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/L0StringModifier.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.browsing.ui.graph.impl;\r
  13 \r
  14 import org.simantics.browsing.ui.common.ErrorLogger;\r
  15 import org.simantics.browsing.ui.content.Labeler.Modifier;\r
  16 import org.simantics.db.ReadGraph;\r
  17 import org.simantics.db.RequestProcessor;\r
  18 import org.simantics.db.Resource;\r
  19 import org.simantics.db.WriteGraph;\r
  20 import org.simantics.db.common.primitiverequest.PossibleAdapter;\r
  21 import org.simantics.db.common.request.WriteRequest;\r
  22 import org.simantics.db.exception.DatabaseException;\r
  23 import org.simantics.db.layer0.adapter.StringModifier;\r
  24 import org.simantics.db.request.Read;\r
  25 \r
  26 public class L0StringModifier implements Modifier {\r
  27 \r
  28         final private RequestProcessor processor;\r
  29         final private Resource resource;\r
  30 \r
  31         public L0StringModifier(RequestProcessor processor, Resource resource) {\r
  32                 this.processor = processor;\r
  33                 this.resource = resource;\r
  34         }\r
  35 \r
  36         @Override\r
  37         public String getValue() {\r
  38                 try {\r
  39                         return processor.syncRequest(new PossibleAdapter<String>(resource, String.class));\r
  40                 } catch (DatabaseException e) {\r
  41                         ErrorLogger.defaultLogError(e);\r
  42                         return null;\r
  43                 }\r
  44         }\r
  45 \r
  46         @Override\r
  47         public String isValid(final String label) {\r
  48                 try {\r
  49                         return processor.syncRequest(new Read<String>() {\r
  50                                 @Override\r
  51                                 public String perform(ReadGraph graph) throws DatabaseException {\r
  52                                         StringModifier modifier = graph.adapt(resource, StringModifier.class);\r
  53                                         return modifier.isValid(label);\r
  54                                 }\r
  55                         });\r
  56                 } catch (DatabaseException e) {\r
  57                         ErrorLogger.defaultLogError(e);\r
  58                         return e.getMessage();\r
  59                 }\r
  60         }\r
  61 \r
  62         @Override\r
  63         public void modify(final String label) {\r
  64                 try {\r
  65                         processor.syncRequest(new WriteRequest() {\r
  66                                 @Override\r
  67                                 public void perform(WriteGraph graph) throws DatabaseException {\r
  68                                         StringModifier modifier = graph.adapt(resource, StringModifier.class);\r
  69                                         modifier.modify(graph, label);\r
  70                                 }\r
  71                         });\r
  72                 } catch (DatabaseException e) {\r
  73                         ErrorLogger.defaultLogError(e);\r
  74                 }\r
  75         }\r
  76 \r
  77 }\r