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.asterix.external.feed.management;
  
  import java.io.Serializable;
  
  import org.apache.asterix.active.EntityId;
  import org.apache.asterix.common.metadata.DataverseName;
  
  /**
   * A unique identifier for a feed connection. A feed connection is an instance of a data feed that is flowing into a
   * dataset.
   */
  public class FeedConnectionId implements Serializable {
  
      private static final long serialVersionUID = 1L;
      private static final String FEED_EXTENSION_NAME = "Feed";
  
      private final EntityId feedId; // Dataverse - Feed
      private final String datasetName; // Dataset <Dataset is empty in case of no target dataset>
      private final int hash;
  
      public FeedConnectionId(EntityId feedId, String datasetName) {
          this.feedId = feedId;
          this.datasetName = datasetName;
          this.hash = toString().hashCode();
      }
  
      public FeedConnectionId(String databaseName, DataverseName dataverseName, String feedName, String datasetName) {
          this(new EntityId(FEED_EXTENSION_NAME, databaseName, dataverseName, feedName), datasetName);
      }
  
      public EntityId getFeedId() {
          return feedId;
      }
  
      public String getDatasetName() {
          return datasetName;
      }
  
      @Override
      public boolean equals(Object o) {
          if (!(o instanceof FeedConnectionId)) {
              return false;
          }
  
          if (this == o || (((FeedConnectionId) o).getFeedId().equals(feedId)
                  && ((FeedConnectionId) o).getDatasetName().equals(datasetName))) {
              return true;
          }
          return false;
      }
  
      @Override
      public int hashCode() {
          return hash;
      }
  
      @Override
      public String toString() {
          return feedId.toString() + "-->" + datasetName;
      }
  }
  