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.
   */
  
  /**
  * @author Alexander Y. Kleymenov
  * @version $Revision$
  */
  
  package android.framework.org.apache.harmony.security_custom.x509;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  import android.framework.org.apache.harmony.security_custom.asn1.ASN1SequenceOf;
  import android.framework.org.apache.harmony.security_custom.asn1.ASN1Type;
  import android.framework.org.apache.harmony.security_custom.asn1.BerInputStream;
  
  /**
   * The class encapsulates the ASN.1 DER encoding/decoding work
   * with the GeneralSubtrees structure which is a part of X.509 certificate:
   * (as specified in RFC 3280 -
   *  Internet X.509 Public Key Infrastructure.
   *  Certificate and Certificate Revocation List (CRL) Profile.
   *  http://www.ietf.org/rfc/rfc3280.txt):
   *
   * <pre>
   *   GeneralSubtrees ::= SEQUENCE SIZE (1..MAX) OF GeneralSubtree
   * </pre>
   *
   * @see android.framework.org.apache.harmony.security_custom.x509.NameConstraints
   * @see android.framework.org.apache.harmony.security_custom.x509.GeneralSubtree
   */
  public final class GeneralSubtrees {
      /** the list of values of GeneralSubtrees */
      private List<GeneralSubtree> generalSubtrees;
      /** the ASN.1 encoded form of GeneralSubtrees */
      private byte[] encoding;
  
      public GeneralSubtrees(List<GeneralSubtree> generalSubtrees) {
          // TODO: the size should not be less than one
          this.generalSubtrees = generalSubtrees;
      }
  
      /**
       * Returns the list of values of subtrees.
       */
      public List<GeneralSubtree> getSubtrees() {
          return generalSubtrees;
      }
  
      /**
       * Returns ASN.1 encoded form of this X.509 AlgorithmIdentifier value.
       */
      public byte[] getEncoded() {
          if (encoding == null) {
              encoding = ASN1.encode(this);
          }
          return encoding;
      }
  
      /**
       * ASN.1 DER X.509 GeneralSubtrees encoder/decoder class.
       */
      public static final ASN1Type ASN1 = new ASN1SequenceOf(GeneralSubtree.ASN1) {
          @Override public Object getDecodedObject(BerInputStream in) {
              return new GeneralSubtrees((List<GeneralSubtree>) in.content);
          }
  
          @Override public Collection getValues(Object object) {
              GeneralSubtrees gss = (GeneralSubtrees) object;
              return (gss.generalSubtrees == null)
                      ? new ArrayList<GeneralSubtree>()
                      : gss.generalSubtrees;
          }
      };
  }
  
  