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.concurrent.atomic.AtomicBoolean;
16 import org.simantics.db.AsyncReadGraph;
17 import org.simantics.db.common.utils.Logger;
18 import org.simantics.db.impl.graph.AsyncBarrierImpl;
19 import org.simantics.db.procedure.AsyncProcedure;
21 public class CallWrappedSingleQueryProcedure4<Result> implements AsyncProcedure<Result> {
23 final private Object key;
24 final private AsyncProcedure<Result> procedure;
25 final private AtomicBoolean latch = new AtomicBoolean(false);
27 public CallWrappedSingleQueryProcedure4(AsyncProcedure<Result> procedure, Object key) {
28 this.procedure = procedure;
33 public void execute(AsyncReadGraph graph, Result result) {
34 if(latch.compareAndSet(false, true)) {
36 procedure.execute(graph, result);
37 } catch (Throwable t) {
38 Logger.defaultLogError("AsyncProcedure.exception failed for " + procedure, t);
42 Logger.defaultLogError("Execute or exception was called many times (this time is execute)");
47 public void exception(AsyncReadGraph graph, Throwable t) {
48 if(latch.compareAndSet(false, true)) {
50 procedure.exception(graph, t);
51 } catch (Throwable throwable) {
52 Logger.defaultLogError("AsyncProcedure.exception failed for " + procedure, throwable);
56 Logger.defaultLogError("Execute or exception was called many times (this time is exception)");