1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.db.impl.procedure;
14 import java.util.ArrayList;
15 import java.util.concurrent.atomic.AtomicBoolean;
17 import org.simantics.db.AsyncReadGraph;
18 import org.simantics.db.common.utils.Logger;
19 import org.simantics.db.impl.query.QueryProcessor.AsyncBarrier;
20 import org.simantics.db.procedure.AsyncMultiProcedure;
22 public class ResultCallWrappedQueryProcedure4<Result> implements AsyncMultiProcedure<Result> {
24 final private ArrayList<Result> result;
25 private Throwable exception = null;
26 final private AsyncMultiProcedure<Result> procedure;
27 final private AtomicBoolean latch;
29 public ResultCallWrappedQueryProcedure4(AsyncMultiProcedure<Result> procedure) {
30 this.procedure = procedure;
31 latch = new AtomicBoolean(false);
32 result = new ArrayList<Result>();
36 public void execute(AsyncReadGraph graph, Result result) {
38 synchronized(this.result) {
39 this.result.add(result);
41 procedure.execute(graph, result);
42 } catch (Throwable t) {
43 Logger.defaultLogError("AsyncMultiProcedure.execute failed for " + procedure, t);
48 public void finished(AsyncReadGraph graph) {
49 if(latch.compareAndSet(false, true)) {
51 procedure.finished(graph);
52 } catch (Throwable t) {
53 Logger.defaultLogError("AsyncMultiProcedure.exception failed for " + procedure, t);
57 Logger.defaultLogError("Finished or exception was called many times (this time is finished)");
62 public void exception(AsyncReadGraph graph, Throwable t) {
63 if(latch.compareAndSet(false, true)) {
66 procedure.exception(graph, t);
67 } catch (Throwable throwable) {
68 Logger.defaultLogError("AsyncMultiProcedure.exception failed for " + procedure, throwable);
72 Logger.defaultLogError("Finished or exception was called many times (this time is exception)");
76 public ArrayList<Result> getResult() {
80 public Throwable getException() {
85 public String toString() {
86 return "ResultCallWrappedQueryProcedure4[" + procedure + "]";