bundles/org.simantics.db.impl/src/org/simantics/db/impl/BlockingAsyncProcedure.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.impl;
  13
  14 import java.text.DecimalFormat;
  15 import java.util.concurrent.TimeUnit;
  16
  17 import org.simantics.db.AsyncReadGraph;
  18 import org.simantics.db.common.utils.Logger;
  19 import org.simantics.db.exception.DatabaseException;
  20 import org.simantics.db.impl.graph.AsyncBarrierImpl;
  21 import org.simantics.db.impl.graph.ReadGraphImpl;
  22 import org.simantics.db.procedure.AsyncProcedure;
  23
  24 public class BlockingAsyncProcedure<Result> implements AsyncProcedure<Result> {
  25 <<<<<<< Upstream, based on branch 'private/antti_threads' of ssh://villberg@gerrit.simantics.org:29418/simantics/platform.git
  26
  27         final private Object key;
  28     final private ReadGraphImpl graph;
  29         final private AsyncProcedure<Result> procedure;
  30
  31     private Result result = null;
  32     private Throwable exception = null;
  33
  34     public BlockingAsyncProcedure(ReadGraphImpl graph, AsyncProcedure<Result> procedure, Object key) {
  35         this.procedure = procedure;
  36         this.key = key;
  37         this.graph = ReadGraphImpl.newAsync(graph);
  38         this.graph.asyncBarrier.inc();
  39     }
  40
  41     @Override
  42     public void execute(AsyncReadGraph graph, Result result) {
  43         this.result = result;
  44         this.graph.asyncBarrier.dec();
  45         try {
  46                 if(procedure != null) procedure.execute(graph, result);
  47         } catch (Throwable throwable) {
  48                 Logger.defaultLogError("AsyncProcedure.execute threw for " + procedure, throwable);
  49         }
  50     }
  51
  52     @Override
  53     public void exception(AsyncReadGraph graph, Throwable t) {
  54         this.exception = t;
  55         try {
  56                 if(procedure != null) procedure.exception(graph, t);
  57         } catch (Throwable throwable) {
  58                 Logger.defaultLogError("AsyncProcedure.exception threw for " + procedure, throwable);
  59         } finally {
  60         }
  61         this.graph.asyncBarrier.dec();
  62     }
  63
  64     public Result get() throws DatabaseException {
  65
  66         graph.asyncBarrier.waitBarrier(key, graph);
  67
  68         if(exception != null) {
  69                 if(exception instanceof DatabaseException) throw (DatabaseException)exception;
  70                 throw new DatabaseException(exception);
  71         } else {
  72                 return result;
  73         }
  74
  75     }
  76
  77     public Result getResult() {
  78         return result;
  79 =======
  80
  81         final private static Object NO_RESULT = new Object();
  82
  83         final private Object key;
  84     final private ReadGraphImpl graph;
  85         final private AsyncProcedure<Result> procedure;
  86
  87     private Object result = NO_RESULT;
  88     private Throwable exception = null;
  89
  90     public BlockingAsyncProcedure(ReadGraphImpl graph, AsyncProcedure<Result> procedure, Object key) {
  91         this.procedure = procedure;
  92         this.key = key;
  93         this.graph = ReadGraphImpl.newAsync(graph);
  94         this.graph.asyncBarrier.inc();
  95     }
  96
  97     @Override
  98     public void execute(AsyncReadGraph graph, Result result) {
  99         this.result = result;
 100         this.graph.asyncBarrier.dec();
 101         try {
 102                 if(procedure != null) procedure.execute(graph, result);
 103         } catch (Throwable throwable) {
 104                 Logger.defaultLogError("AsyncProcedure.execute threw for " + procedure, throwable);
 105         }
 106     }
 107
 108     @Override
 109     public void exception(AsyncReadGraph graph, Throwable t) {
 110         this.exception = t;
 111         try {
 112                 if(procedure != null) procedure.exception(graph, t);
 113         } catch (Throwable throwable) {
 114                 Logger.defaultLogError("AsyncProcedure.exception threw for " + procedure, throwable);
 115         } finally {
 116         }
 117         this.graph.asyncBarrier.dec();
 118     }
 119
 120     public Result get() throws DatabaseException {
 121
 122         graph.asyncBarrier.waitBarrier(key, graph);
 123
 124         if(exception != null) {
 125                 if(exception instanceof DatabaseException) throw (DatabaseException)exception;
 126                 throw new DatabaseException(exception);
 127         } else {
 128                 return (Result)result;
 129         }
 130
 131     }
 132
 133     public Result getResult() {
 134         return (Result)result;
 135 >>>>>>> 82fa68e Generate parts of db client query code
 136     }
 137
 138     public Throwable getException() {
 139         return exception;
 140     }
 141
 142     @Override
 143     public String toString() {
 144         return "." + procedure;
 145     }
 146
 147 }