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.carbondata.core.datastore;
  
  import org.apache.carbondata.core.constants.CarbonCommonConstants;
  import org.apache.carbondata.core.metadata.AbsoluteTableIdentifier;
  import org.apache.carbondata.core.metadata.CarbonTableIdentifier;
  
  /**
   * Class holds the absoluteTableIdentifier and segmentId to uniquely identify a segment
   */
  public class TableSegmentUniqueIdentifier {
    /**
     * table fully qualified identifier
     */
    private AbsoluteTableIdentifier absoluteTableIdentifier;
  
    private String segmentId;
  
    /**
     * Constructor to initialize the class instance
     * @param absoluteTableIdentifier
     * @param segmentId
     */
    public TableSegmentUniqueIdentifier(AbsoluteTableIdentifier absoluteTableIdentifier,
        String segmentId) {
      this.absoluteTableIdentifier = absoluteTableIdentifier;
      this.segmentId = segmentId;
    }
  
    public String getSegmentId() {
      return segmentId;
    }
  
    /**
     * method returns the id to uniquely identify a key
     *
     * @return
     */
    public String getUniqueTableSegmentIdentifier() {
      CarbonTableIdentifier carbonTableIdentifier =
              absoluteTableIdentifier.getCarbonTableIdentifier();
      return carbonTableIdentifier.getDatabaseName() + CarbonCommonConstants.FILE_SEPARATOR
              + carbonTableIdentifier.getTableName() + CarbonCommonConstants.UNDERSCORE
              + carbonTableIdentifier.getTableId() + CarbonCommonConstants.FILE_SEPARATOR + segmentId;
    }
  
    /**
     * equals method to compare two objects having same
     * absoluteIdentifier and segmentId
     * @param o
     * @return
     */
    @Override
    public boolean equals(Object o) {
      if (this == o) return true;
      if (o == null || getClass() != o.getClass()) return false;
  
      TableSegmentUniqueIdentifier that = (TableSegmentUniqueIdentifier) o;
  
      if (!absoluteTableIdentifier.equals(that.absoluteTableIdentifier)) return false;
      return segmentId.equals(that.segmentId);
  
    }
  
    /**
     * Returns hashcode for the TableSegmentIdentifier
     * @return
     */
    @Override
    public int hashCode() {
      int result = absoluteTableIdentifier.hashCode();
      result = 31 * result + segmentId.hashCode();
      return result;
    }
  }
  