001// Copyright 2007, 2010 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.services;
016
017import org.apache.tapestry5.ioc.internal.util.InternalUtils;
018
019/**
020 * A contribution to the configuration of the {@link ApplicationStateManager}, identifying the strategy and creator for
021 * a particular Session State Object (SSO), identified by the SSO's class.
022 */
023@SuppressWarnings("all")
024public final class ApplicationStateContribution
025{
026    private final String strategy;
027
028    private final ApplicationStateCreator creator;
029
030    public ApplicationStateContribution(String strategy)
031    {
032        this(strategy, null);
033    }
034
035    public ApplicationStateContribution(String strategy, ApplicationStateCreator creator)
036    {
037        assert InternalUtils.isNonBlank(strategy);
038        this.strategy = strategy;
039        this.creator = creator;
040    }
041
042    /**
043     * The creator for the ASO. If null, the the ASO is created directly from the ASO class, via its public no-arguments
044     * constructor.
045     */
046    public ApplicationStateCreator getCreator()
047    {
048        return creator;
049    }
050
051    /**
052     * The name of the strategy used to control where the ASO is stored.
053     */
054    public String getStrategy()
055    {
056        return strategy;
057    }
058
059}