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
   *
   *     https://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.avro.mapred;
  
  /** The wrapper of data for jobs configured with {@link AvroJob} . */
  public class AvroWrapper<T> {
    private T datum;
  
    /** Wrap null. Construct {@link AvroWrapper} wrapping no datum. */
    public AvroWrapper() {
      this(null);
    }
  
    /** Wrap a datum. */
    public AvroWrapper(T datum) {
      this.datum = datum;
    }
  
    /** Return the wrapped datum. */
    public T datum() {
      return datum;
    }
  
    /** Set the wrapped datum. */
    public void datum(T datum) {
      this.datum = datum;
    }
  
    @Override
    public int hashCode() {
      return (datum == null) ? 0 : datum.hashCode();
    }
  
    @Override
    public boolean equals(Object obj) {
      if (this == obj)
        return true;
      if (obj == null)
        return false;
      if (getClass() != obj.getClass())
        return false;
      AvroWrapper that = (AvroWrapper) obj;
      if (this.datum == null) {
        return that.datum == null;
      } else
        return datum.equals(that.datum);
    }
  
    /** Get the wrapped datum as JSON. */
    @Override
    public String toString() {
      return datum.toString();
    }
  }
  