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.procedure.AsyncProcedure;
20 public class CallWrappedSingleQueryProcedure4<Result> implements AsyncProcedure<Result> {
22 final private Object key;
23 final private AsyncProcedure<Result> procedure;
24 final private AtomicBoolean latch = new AtomicBoolean(false);
26 public CallWrappedSingleQueryProcedure4(AsyncProcedure<Result> procedure, Object key) {
27 this.procedure = procedure;
32 public void execute(AsyncReadGraph graph, Result result) {
33 if(latch.compareAndSet(false, true)) {
35 procedure.execute(graph, result);
36 } catch (Throwable t) {
37 Logger.defaultLogError("AsyncProcedure.exception failed for " + procedure, t);
41 Logger.defaultLogError("Execute or exception was called many times (this time is execute)");
46 public void exception(AsyncReadGraph graph, Throwable t) {
47 if(latch.compareAndSet(false, true)) {
49 procedure.exception(graph, t);
50 } catch (Throwable throwable) {
51 Logger.defaultLogError("AsyncProcedure.exception failed for " + procedure, throwable);
55 Logger.defaultLogError("Execute or exception was called many times (this time is exception)");