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.metadata;
  
  import java.io.Serializable;
  import java.util.Map;
  
  import org.apache.carbondata.core.metadata.datatype.DataType;
  
  /**
   * Column unique identifier
   */
  public class ColumnIdentifier implements Serializable {
  
    /**
     *
     */
    private static final long serialVersionUID = 1L;
  
    /**
     * column id
     */
    private String columnId;
  
    /**
     * column properties
     */
    private Map<String, String> columnProperties;
  
    private DataType dataType;
  
    /**
     * @param columnId
     * @param columnProperties
     */
    public ColumnIdentifier(String columnId, Map<String, String> columnProperties,
        DataType dataType) {
      this.columnId = columnId;
      this.columnProperties = columnProperties;
      this.dataType = dataType;
    }
  
    /**
     * @return columnId
     */
    public String getColumnId() {
      return columnId;
    }
  
    /**
     * @param columnProperty
     * @return
     */
    public String getColumnProperty(String columnProperty) {
      String property = null;
      if (null != columnProperties) {
        property = columnProperties.get(columnProperty);
      }
      return property;
    }
  
    public DataType getDataType() {
      return this.dataType;
    }
  
    @Override
    public int hashCode() {
      final int prime = 31;
      int result = 1;
      result = prime * result + ((columnId == null) ? 0 : columnId.hashCode());
      return result;
    }
  
    @Override
    public boolean equals(Object obj) {
      if (this == obj) {
        return true;
      }
      if (obj == null) {
        return false;
      }
      if (getClass() != obj.getClass()) {
        return false;
      }
      ColumnIdentifier other = (ColumnIdentifier) obj;
      if (columnId == null) {
        if (other.columnId != null) {
          return false;
        }
      } else if (!columnId.equals(other.columnId)) {
        return false;
      }
      return true;
    }
  
    @Override
    public String toString() {
      return "ColumnIdentifier [columnId=" + columnId + "]";
    }
  
  }
  