001// Copyright 2004, 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;
016
017/**
018 * A particular type of component usuable with the action service.
019 * 
020 * @author Howard Lewis Ship
021 * @since 1.0.1
022 * @deprecated To be removed in 4.1 with no replacement.
023 */
024
025public interface IAction extends IComponent
026{
027    /**
028     * Returns true if the component requires an existing, not new,
029     * {@link javax.servlet.http.HttpSession} to operate. Components who are not dependant on page
030     * state (or the visit object) are non-stateful and can return false.
031     */
032
033    public boolean getRequiresSession();
034}