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/* BinaryDataEntry.java --

   Copyright (C) 2003, 2006 Free Software Foundation, Inc.

This file is a part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 of the License, or (at

your option) any later version.

GNU Classpath is distributed in the hope that it will be useful, but

WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

General Public License for more details.

You should have received a copy of the GNU General Public License

along with GNU Classpath; if not, write to the Free Software

Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301

USA

Linking this library statically or dynamically with other modules is

making a combined work based on this library.  Thus, the terms and

conditions of the GNU General Public License cover the whole

combination.

As a special exception, the copyright holders of this library give you

permission to link this library with independent modules to produce an

executable, regardless of the license terms of these independent

modules, and to copy and distribute the resulting executable under

terms of your choice, provided that you also meet, for each linked

independent module, the terms and conditions of the license of that

module.  An independent module is a module which is not derived from

or based on this library.  If you modify this library, you may extend

this exception to your version of the library, but you are not

obligated to do so.  If you do not wish to do so, delete this

exception statement from your version.  */

package gnu.javax.crypto.keyring;

import java.io.DataInputStream;

import java.io.IOException;

import java.util.Date;

/**

 * A binary data entry is a primitive entry that simply contains some amount of

 * arbitrary binary data and an optional content type.

 */

public class BinaryDataEntry

    extends PrimitiveEntry

{

  public static final int TYPE = 9;

  /**

   * Creates a new binary data entry.

   *

   * @param contentType The content type of this entry. This parameter can be

   *          <code>null</code> if no content type is needed.

   * @param data The data.

   * @param creationDate The creation date.

   * @param properties This entry's properties.

   */

  public BinaryDataEntry(String contentType, byte[] data, Date creationDate,

                         Properties properties)

  {

    super(TYPE, creationDate, properties);

    if (data == null)

      throw new IllegalArgumentException("no data");

    payload = (byte[]) data.clone();

    if (contentType != null)

      this.properties.put("content-type", contentType);

  }

  private BinaryDataEntry()

  {

    super(TYPE);

  }

  public static BinaryDataEntry decode(DataInputStream in) throws IOException

  {

    BinaryDataEntry entry = new BinaryDataEntry();

    entry.defaultDecode(in);

    return entry;

  }

  /**

   * Returns the content type of this entry, or <code>null</code> if this

   * property is not set.

   *

   * @return The content type.

   */

  public String getContentType()

  {

    return properties.get("content-type");

  }

  /**

   * Returns this object's data field.

   *

   * @return The data.

   */

  public byte[] getData()

  {

    return getPayload();

  }

  protected void encodePayload()

  {

    // Empty.

  }

}