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.view.validation;
  
  import org.apache.ambari.view.validation.ValidationResult;
  
  /**
   * Simple validation result implementation.
   */
  public class ValidationResultImpl implements ValidationResult{
    /**
     * Indicates whether or not the result is valid.
     */
    private final boolean valid;
  
    /**
     * Detail message for the result.
     */
    private final String detail;
  
  
    // ----- Constructors ------------------------------------------------------
  
    /**
     * Construct a validation result.
     *
     * @param valid   indicates whether or not the result is valid
     * @param detail  detail message for the result
     */
    public ValidationResultImpl(boolean valid, String detail) {
      this.valid  = valid;
      this.detail = detail;
    }
  
  
    // ----- ValidationResult --------------------------------------------------
  
    @Override
    public boolean isValid() {
      return valid;
    }
  
    @Override
    public String getDetail() {
      return detail;
    }
  
  
    // ----- helper methods ----------------------------------------------------
  
    /**
     * Factory method to create a validation result from an existing result (accounts for null).
     *
     * @param result  the validation result; may be null
     *
     * @return a new validation result
     */
    public static ValidationResult create(ValidationResult result) {
      if (result == null) {
        result = SUCCESS;
      }
      return new ValidationResultImpl(result.isValid(), result.getDetail());
    }
  }
  