content: package local.org.bouncycastle.asn1.x500;
  
  import local.org.bouncycastle.asn1.ASN1Encodable;
  import local.org.bouncycastle.asn1.ASN1EncodableVector;
  import local.org.bouncycastle.asn1.ASN1Object;
  import local.org.bouncycastle.asn1.ASN1ObjectIdentifier;
  import local.org.bouncycastle.asn1.ASN1Primitive;
  import local.org.bouncycastle.asn1.ASN1Set;
  import local.org.bouncycastle.asn1.DERSequence;
  import local.org.bouncycastle.asn1.DERSet;
  
  public class RDN
      extends ASN1Object
  {
      private ASN1Set values;
  
      private RDN(ASN1Set values)
      {
          this.values = values;
      }
  
      public static RDN getInstance(Object obj)
      {
          if (obj instanceof RDN)
          {
              return (RDN)obj;
          }
          else if (obj != null)
          {
              return new RDN(ASN1Set.getInstance(obj));
          }
  
          return null;
      }
  
      /**
       * Create a single valued RDN.
       *
       * @param oid RDN type.
       * @param value RDN value.
       */
      public RDN(ASN1ObjectIdentifier oid, ASN1Encodable value)
      {
          ASN1EncodableVector v = new ASN1EncodableVector();
  
          v.add(oid);
          v.add(value);
  
          this.values = new DERSet(new DERSequence(v));
      }
  
      public RDN(AttributeTypeAndValue attrTAndV)
      {
          this.values = new DERSet(attrTAndV);
      }
  
      /**
       * Create a multi-valued RDN.
       *
       * @param aAndVs attribute type/value pairs making up the RDN
       */
      public RDN(AttributeTypeAndValue[] aAndVs)
      {
          this.values = new DERSet(aAndVs);
      }
  
      public boolean isMultiValued()
      {
          return this.values.size() > 1;
      }
  
      /**
       * Return the number of AttributeTypeAndValue objects in this RDN,
       *
       * @return size of RDN, greater than 1 if multi-valued.
       */
      public int size()
      {
          return this.values.size();
      }
  
      public AttributeTypeAndValue getFirst()
      {
          if (this.values.size() == 0)
          {
              return null;
          }
  
          return AttributeTypeAndValue.getInstance(this.values.getObjectAt(0));
      }
  
      public AttributeTypeAndValue[] getTypesAndValues()
      {
          AttributeTypeAndValue[] tmp = new AttributeTypeAndValue[values.size()];
  
          for (int i = 0; i != tmp.length; i++)
          {
              tmp[i] = AttributeTypeAndValue.getInstance(values.getObjectAt(i));
          }
  
          return tmp;
      }
  
      /**
       * <pre>
       * RelativeDistinguishedName ::=
       *                     SET OF AttributeTypeAndValue
  
       * AttributeTypeAndValue ::= SEQUENCE {
       *        type     AttributeType,
       *        value    AttributeValue }
       * </pre>
       * @return this object as an ASN1Primitive type
       */
      public ASN1Primitive toASN1Primitive()
      {
          return values;
      }
  }
  