    001// Copyright 2006, 2007, 2008 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007// http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014
    015package org.apache.tapestry5.ioc.internal.services;
    016
    017import java.util.Set;
    018
    019import org.apache.tapestry5.ioc.ScopeConstants;
    020import org.apache.tapestry5.ioc.annotations.PreventServiceDecoration;
    021import org.apache.tapestry5.ioc.annotations.Scope;
    022import org.apache.tapestry5.ioc.internal.util.CollectionFactory;
    023import org.apache.tapestry5.ioc.services.ExceptionTracker;
    024
    025@Scope(ScopeConstants.PERTHREAD)
    026@PreventServiceDecoration
    027public class ExceptionTrackerImpl implements ExceptionTracker
    028{
    029    private final Set<Throwable> exceptions = CollectionFactory.newSet();
    030
    031    @Override
    032    public boolean exceptionLogged(Throwable exception)
    033    {
    034        boolean result = exceptions.contains(exception);
    035
    036        exceptions.add(exception);
    037
    038        return result;
    039    }
    040}