001// Copyright 2005 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.tapestry.web;
016
017import java.util.List;
018
019/**
020 * Defines methods for accessing initialization parameters.
021 * 
022 * @author Howard M. Lewis Ship
023 * @since 4.0
024 */
025public interface InitializationParameterHolder
026{
027    /**
028     * Returns a sorted list of the names of all initialization parameters (which may be the empty
029     * list).
030     * 
031     * @return List of String
032     */
033
034    public List getInitParameterNames();
035
036    /**
037     * Returns the value of the named parameter, or null if the reciever does not have such a
038     * parameter.
039     * 
040     * @param name
041     *            the name of the parameter to retrieve
042     * @return the corresponding value, or null
043     */
044
045    public String getInitParameterValue(String name);
046}