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.collections.functors;
  
  import java.util.Map;
  
  import org.apache.ambari.server.collections.PredicateUtils;
  import org.apache.commons.collections4.Predicate;
  import org.apache.commons.collections4.functors.PredicateDecorator;
  
  /**
   * {@link NotPredicate} wraps {@link org.apache.commons.collections4.functors.NotPredicate} to
   * provide additional functionality like serializing to and from a Map and JSON formatted data.
   * <p>
   * See {@link DelegatedSinglePredicateContainer}
   */
  public class NotPredicate extends DelegatedSinglePredicateContainer {
  
    /**
     * The name of this {@link org.apache.ambari.server.collections.Predicate} implementation
     */
    public static final String NAME = "not";
  
    /**
     * Creates a new {@link NotPredicate} using the given {@link Map} of data.
     * <p>
     * It is expected that the map contains a single {@link java.util.Map.Entry} where the key name
     * is "not" and the value is a {@link Map} representing the contained predicate.
     *
     * @return a new {@link NotPredicate}
     */
    public static NotPredicate fromMap(Map<String, Object> map) {
      Object data = (map == null) ? null : map.get(NAME);
  
      if (data == null) {
        throw new IllegalArgumentException("Missing data for '" + NAME + "' operation");
      } else if (data instanceof Map) {
        return new NotPredicate(PredicateUtils.fromMap((Map) data));
      } else {
        throw new IllegalArgumentException("Missing data for '" + NAME + "' operation");
      }
    }
  
    /**
     * Constructor.
     *
     * @param predicate the predicate to negate
     */
    public NotPredicate(Predicate predicate) {
      super(NAME,
          (PredicateDecorator) org.apache.commons.collections4.functors.NotPredicate.notPredicate(predicate));
    }
  
    @Override
    public int hashCode() {
      return super.hashCode() + this.getClass().getName().hashCode();
    }
  
    @Override
    public boolean equals(Object obj) {
      return (obj == this) ||
          ((obj != null) && (super.equals(obj) && this.getClass().isInstance(obj) && (hashCode() == obj.hashCode())));
    }
  }
  