    001// Copyright 2006, 2007, 2008, 2009, 2011, 2012 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.internal.services;
    016
    017import org.apache.tapestry5.commons.Resource;
    018import org.apache.tapestry5.commons.services.InvalidationListener;
    019
    020import java.util.List;
    021import java.util.Map;
    022import java.util.function.Function;
    023
    024public class ResourceDigestManagerImpl implements ResourceDigestManager
    025{
    026    public String getDigest(Resource resource)
    027    {
    028        return null;
    029    }
    030
    031    public boolean requiresDigest(Resource resource)
    032    {
    033        return false;
    034    }
    035
    036    public void addInvalidationListener(InvalidationListener listener)
    037    {
    038    }
    039
    040    public void addInvalidationCallback(Runnable callback)
    041    {
    042    }
    043
    044    public void clearOnInvalidation(Map<?, ?> map)
    045    {
    046    }
    047
    048    @Override
    049    public void addInvalidationCallback(Function<List<String>, List<String>> function)
    050    {
    051    }
    052
    053    @Override
    054    public void fireInvalidationEvent(List<String> resources)
    055    {
    056    }
    057
    058}