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.state;
  
  import java.util.Map;
  
  import javax.xml.bind.annotation.XmlElement;
  import javax.xml.bind.annotation.XmlSeeAlso;
  import javax.xml.bind.annotation.XmlTransient;
  
  /**
   * Represents stack component dependency condition information provided in
   * metainfo.xml file.
   */
  @XmlTransient
  @XmlSeeAlso({ PropertyExists.class, PropertyValueEquals.class })
  public interface DependencyConditionInfo {
    /**
     * Returns true if the dependency condition is satisfied
     *
     * @param properties
     * @return boolean
     */
    boolean isResolved(Map<String, Map<String, String>> properties);
  }
  
  /**
   * This class represents a dependency condition that is based on existence of a
   * certain property.
   */
  class PropertyExists implements DependencyConditionInfo {
    /**
     * configType of the conditional dependency
     */
    protected String configType;
  
    /**
     * property of the conditional dependency
     */
    protected String property;
  
    /**
     * type of conditional dependency
     */
    protected String type = this.getClass().getSimpleName();
  
    public String getType() {
      return type;
    }
  
    public void setType(String type) {
      this.type = type;
    }
  
    @XmlElement
    public String getProperty() {
      return property;
    }
  
    public void setProperty(String property) {
      this.property = property;
    }
  
    @XmlElement
    public String getConfigType() {
      return configType;
    }
  
    public void setConfigType(String configType) {
      this.configType = configType;
    }
  
    @Override
    public boolean isResolved(Map<String, Map<String, String>> properties) {
      return (properties.get(configType).containsKey(property));
    }
  }
  
  /**
   * This class represents a dependency condition that is based on value of a
   * certain property.
   */
  class PropertyValueEquals extends PropertyExists {
    /**
     * propertyValue of the property
     */
    protected String propertyValue;
  
    @XmlElement
    public String getPropertyValue() {
      return propertyValue;
    }
  
    public void setPropertyValue(String propertyValue) {
      this.propertyValue = propertyValue;
    }
  
    @Override
    public boolean isResolved(Map<String, Map<String, String>> properties) {
      return (super.isResolved(properties) && propertyValue.equals(properties.get(configType).get(property)));
    }
  }
  