// Copyright 2011 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
//
// 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 com.google.enterprise.adaptor;

/**
 * Generic session-state container, but intended for authn bookkeeping.
 */
public interface Session {
  /**
   * Set attribute value, replacing existing value if it already exists.
   */
  public void setAttribute(String key, Object value);

  /**
   * Get attribute value.
   */
  public Object getAttribute(String key);

  /**
   * Remove attribute value.
   */
  public Object removeAttribute(String key);
}