content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.ambari.server.view;
  
  import org.apache.ambari.server.orm.entities.ViewInstanceEntity;
  import org.apache.ambari.view.SystemException;
  import org.eclipse.jetty.server.session.SessionCache;
  
  /**
   * List of handlers for deployed view instances.
   */
  public interface ViewInstanceHandlerList {
  
    /**
     * Add a handler for the given view instance.
     *
     * @param viewInstanceDefinition  the view instance
     *
     * @throws SystemException if a handler the view instance can not be added
     */
    void addViewInstance(ViewInstanceEntity viewInstanceDefinition) throws SystemException;
  
    /**
     * Shares specified sessionCache between all views' handlers
     * @param serverSessionCache the sessionCache instance
     */
    void shareSessionCacheToViews(SessionCache serverSessionCache);
  
    /**
     * Remove the handler for the given view instance.
     *
     * @param viewInstanceDefinition  the view instance
     */
    void removeViewInstance(ViewInstanceEntity viewInstanceDefinition);
  }
  