Source for gnu.javax.crypto.keyring.BinaryDataEntry

   1: /* BinaryDataEntry.java --
   2:    Copyright (C) 2003, 2006 Free Software Foundation, Inc.
   3: 
   4: This file is a part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2 of the License, or (at
   9: your option) any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; if not, write to the Free Software
  18: Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
  19: USA
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version.  */
  37: 
  38: 
  39: package gnu.javax.crypto.keyring;
  40: 
  41: import java.io.DataInputStream;
  42: import java.io.IOException;
  43: import java.util.Date;
  44: 
  45: /**
  46:  * A binary data entry is a primitive entry that simply contains some amount of
  47:  * arbitrary binary data and an optional content type.
  48:  */
  49: public class BinaryDataEntry
  50:     extends PrimitiveEntry
  51: {
  52:   public static final int TYPE = 9;
  53: 
  54:   /**
  55:    * Creates a new binary data entry.
  56:    *
  57:    * @param contentType The content type of this entry. This parameter can be
  58:    *          <code>null</code> if no content type is needed.
  59:    * @param data The data.
  60:    * @param creationDate The creation date.
  61:    * @param properties This entry's properties.
  62:    */
  63:   public BinaryDataEntry(String contentType, byte[] data, Date creationDate,
  64:                          Properties properties)
  65:   {
  66:     super(TYPE, creationDate, properties);
  67:     if (data == null)
  68:       throw new IllegalArgumentException("no data");
  69:     payload = (byte[]) data.clone();
  70:     if (contentType != null)
  71:       this.properties.put("content-type", contentType);
  72:   }
  73: 
  74:   private BinaryDataEntry()
  75:   {
  76:     super(TYPE);
  77:   }
  78: 
  79:   public static BinaryDataEntry decode(DataInputStream in) throws IOException
  80:   {
  81:     BinaryDataEntry entry = new BinaryDataEntry();
  82:     entry.defaultDecode(in);
  83:     return entry;
  84:   }
  85: 
  86:   /**
  87:    * Returns the content type of this entry, or <code>null</code> if this
  88:    * property is not set.
  89:    *
  90:    * @return The content type.
  91:    */
  92:   public String getContentType()
  93:   {
  94:     return properties.get("content-type");
  95:   }
  96: 
  97:   /**
  98:    * Returns this object's data field.
  99:    *
 100:    * @return The data.
 101:    */
 102:   public byte[] getData()
 103:   {
 104:     return getPayload();
 105:   }
 106: 
 107:   protected void encodePayload()
 108:   {
 109:     // Empty.
 110:   }
 111: }