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.stack;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Set;
  
  import javax.xml.bind.annotation.XmlAccessType;
  import javax.xml.bind.annotation.XmlAccessorType;
  import javax.xml.bind.annotation.XmlElement;
  import javax.xml.bind.annotation.XmlElementWrapper;
  import javax.xml.bind.annotation.XmlElements;
  import javax.xml.bind.annotation.XmlRootElement;
  import javax.xml.bind.annotation.XmlTransient;
  
  import org.apache.ambari.server.stack.Validable;
  
  /**
   * Represents the extension <code>metainfo.xml</code> file.
   *
   * An extension version is like a stack version but it contains custom services.  Linking an extension
   * version to the current stack version allows the cluster to install the custom services contained in
   * the extension version.
   */
  @XmlRootElement(name="metainfo")
  @XmlAccessorType(XmlAccessType.FIELD)
  public class ExtensionMetainfoXml implements Validable{
  
    @XmlElement(name="extends")
    private String extendsVersion = null;
  
    @XmlElement(name="versions")
    private Version version = new Version();
  
    @XmlElement(name="prerequisites")
    private Prerequisites prerequisites = new Prerequisites();
  
    @XmlAccessorType(XmlAccessType.FIELD)
    public static class Prerequisites {
      private Prerequisites() {
      }
      @XmlElementWrapper(name="min-stack-versions")
      @XmlElements(@XmlElement(name="stack"))
      private List<Stack> stacks = new ArrayList<>();
  
      @XmlElementWrapper(name="min-extension-versions")
      @XmlElements(@XmlElement(name="extension"))
      private List<Extension> extensions = new ArrayList<>();
  
      public List<Stack> getStacks() {
        return stacks;
      }
  
      public List<Extension> getExtensions() {
        return extensions;
      }
    }
  
    @XmlTransient
    private boolean valid = true;
  
    @XmlElement(name="auto-link")
    private boolean autoLink = false;
  
    /**
     *
     * @return valid xml flag
     */
    @Override
    public boolean isValid() {
      return valid;
    }
  
    /**
     *
     * @param valid set validity flag
     */
    @Override
    public void setValid(boolean valid) {
      this.valid = valid;
    }
  
    @XmlTransient
    private Set<String> errorSet = new HashSet<>();
  
    @Override
    public void addError(String error) {
      errorSet.add(error);
    }
  
    @Override
    public Collection<String> getErrors() {
      return errorSet;
    }
  
    @Override
    public void addErrors(Collection<String> errors) {
      this.errorSet.addAll(errors);
    }
  
    /**
     * @return the parent stack version number
     */
    public String getExtends() {
      return extendsVersion;
    }
  
    /**
     * @return gets the version
     */
    public Version getVersion() {
      return version;
    }
  
    public List<Stack> getStacks() {
      return prerequisites.getStacks();
    }
  
    public List<Extension> getExtensions() {
      return prerequisites.getExtensions();
    }
  
    @XmlAccessorType(XmlAccessType.FIELD)
    public static class Version {
      private Version() {
      }
      private boolean active = false;
      private String upgrade = null;
  
      /**
       * @return <code>true</code> if the stack is active
       */
      public boolean isActive() {
        return active;
      }
  
      /**
       * @return the upgrade version number, if set
       */
      public String getUpgrade() {
        return upgrade;
      }
    }
  
    @XmlAccessorType(XmlAccessType.FIELD)
    public static class Stack {
      private Stack() {
      }
      private String name = null;
      private String version = null;
  
      /**
       * @return the stack name
       */
      public String getName() {
        return name;
      }
  
      /**
       * @return the stack version, this may be something like 1.0.*
       */
      public String getVersion() {
        return version;
      }
    }
  
    @XmlAccessorType(XmlAccessType.FIELD)
    public static class Extension {
      private Extension() {
      }
      private String name = null;
      private String version = null;
  
      /**
       * @return the extension name
       */
      public String getName() {
        return name;
      }
  
      /**
       * @return the extension version, this may be something like 1.0.*
       */
      public String getVersion() {
        return version;
      }
    }
  
    public boolean isAutoLink() {
      return autoLink;
    }
  
    public void setAutoLink(boolean autoLink) {
      this.autoLink = autoLink;
    }
  
  }
  