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/**
 *  Copyright (c) 1997-2013, www.tinygroup.org ([email protected]).
 *
 *  Licensed under the GPL, Version 3.0 (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.gnu.org/licenses/gpl.html
 *
 *  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.tinygroup.weblayer.webcontext.session;

import org.tinygroup.weblayer.webcontext.TwoPhaseCommitWebContext;

/**
 * 支持session的WebContext实现。
 *
 * @author renhui
 */
public interface SessionWebContext extends TwoPhaseCommitWebContext {
    /**
     * 取得SessionConfig实例。
     *
     * @return SessionConfig实例
     */
    SessionConfig getSessionConfig();

    /**
     * 判断session是否已经作废。
     *
     * @return 如已作废，则返回true
     */
    boolean isSessionInvalidated();

    /**
     * 清除session。类似invalidate()方法，但支持后续操作，而不会抛出
     * IllegalStateException。
     */
    void clear();
}