// Copyright 2005 The Apache Software Foundation | |
// | |
// Licensed under the Apache License, Version 2.0 (the "License"); | |
// you may not use this file except in compliance with the License. | |
// You may obtain a copy of the License at | |
// | |
// http://www.apache.org/licenses/LICENSE-2.0 | |
// | |
// Unless required by applicable law or agreed to in writing, software | |
// distributed under the License is distributed on an "AS IS" BASIS, | |
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
// See the License for the specific language governing permissions and | |
// limitations under the License. | |
package org.apache.tapestry.engine; | |
import org.apache.tapestry.web.WebRequest; | |
/** | |
* Utilities needed by engine services and etc. | |
* | |
* @author Howard M. Lewis Ship | |
* @since 4.0 | |
*/ | |
public final class EngineUtils | |
{ | |
/* defeat instantiation */ | |
private EngineUtils() { } | |
/** | |
* Invoked by to see if an absolute URL is needed (because a specific scheme, server or port | |
* was indicated that does not match the incoming request). | |
* | |
* @param scheme | |
* the desired URL scheme, or null | |
* @param server | |
* the desired URL server name, or null | |
* @param port | |
* the desired URL port, or 0 | |
* @param request | |
* the request to check against | |
* @return true if absolute URL is needed, false otherwise | |
*/ | |
public static boolean needAbsoluteURL(String scheme, String server, int port, WebRequest request) | |
{ | |
if (scheme != null && !scheme.equals(request.getScheme())) return true; | |
if (server != null && !server.equals(request.getServerName())) | |
return true; | |
if (port != 0 && port != request.getServerPort()) return true; | |
return false; | |
} | |
} |