bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/AsyncReadGraphDataSource.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 java.util.function.Consumer;\r
  15 \r
  16 import org.simantics.browsing.ui.DataSource;\r
  17 import org.simantics.db.AsyncReadGraph;\r
  18 import org.simantics.db.AsyncRequestProcessor;\r
  19 import org.simantics.db.common.procedure.adapter.ProcedureAdapter;\r
  20 import org.simantics.db.common.request.AsyncReadRequest;\r
  21 import org.simantics.db.service.LifecycleSupport;\r
  22 import org.simantics.utils.ui.ErrorLogger;\r
  23 \r
  24 public class AsyncReadGraphDataSource implements DataSource<AsyncReadGraph> {\r
  25 \r
  26     final private AsyncRequestProcessor processor;\r
  27     final private LifecycleSupport ls;\r
  28 \r
  29     public AsyncReadGraphDataSource(AsyncRequestProcessor processor) {\r
  30         this.processor = processor;\r
  31         this.ls = processor.getService(LifecycleSupport.class);\r
  32     }\r
  33 \r
  34     @Override\r
  35     public void schedule(final Consumer<AsyncReadGraph> callback) {\r
  36         if(ls.isClosing() || ls.isClosed()) return;\r
  37         processor.asyncRequest(new AsyncReadRequest() {\r
  38             @Override\r
  39             public void run(AsyncReadGraph graph) {\r
  40                 if(ls.isClosing() || ls.isClosed()) return;\r
  41                 callback.accept(graph);\r
  42             }\r
  43         }, new ProcedureAdapter<Object>() {\r
  44             @Override\r
  45             public void exception(Throwable t) {\r
  46                 ErrorLogger.defaultLogError(t);\r
  47             }\r
  48         });\r
  49     }\r
  50 \r
  51     @Override\r
  52     public Class<AsyncReadGraph> getProvidedClass() {\r
  53         return AsyncReadGraph.class;\r
  54     }\r
  55 \r
  56 }\r