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.controller.predicate;
  
  import java.util.Collections;
  import java.util.Set;
  
  /**
   * Predicate that is associated with a resource property.
   */
  public abstract class PropertyPredicate implements BasePredicate {
    private final String propertyId;
  
    public PropertyPredicate(String propertyId) {
      assert (propertyId != null);
      this.propertyId = propertyId;
    }
  
    @Override
    public Set<String> getPropertyIds() {
      return Collections.singleton(propertyId);
    }
  
    public String getPropertyId() {
      return propertyId;
    }
  
    @Override
    public boolean equals(Object o) {
  
      if (this == o) {
        return true;
      }
  
      if (!(o instanceof PropertyPredicate)) {
        return false;
      }
  
      PropertyPredicate that = (PropertyPredicate) o;
  
      return propertyId == null ? that.propertyId == null : propertyId.equals(that.propertyId);
    }
  
    @Override
    public int hashCode() {
      return propertyId != null ? propertyId.hashCode() : 0;
    }
  }
  
  