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.engine.state; 016 017/** 018 * Interface for the nuts and bolts of getting and storing application state objects. These are 019 * intended to be stateless, and manage a number of state objects, mapping objectNames to internal 020 * storage in some way. 021 * 022 * @author Howard M. Lewis Ship 023 * @since 4.0 024 */ 025public interface StateObjectPersistenceManager 026{ 027 public boolean exists(String objectName); 028 029 public Object get(String objectName, StateObjectFactory factory); 030 031 public void store(String objectName, Object stateObject); 032}