/**
 * 
 */
package at.knowcenter.wag.egov.egiz.sig;

import java.io.Serializable;

/**
 * Generic implementation of the SignatureData interface for being used by
 * signators and verificators.
 * 
 * @author wprinz
 */
public class SignatureDataImpl implements SignatureData, Serializable
{
  /**
   * SVUID.
   */
  private static final long serialVersionUID = -8652845539968684408L;

  /**
   * The signature data.
   */
  protected byte[] data = null;

  /**
   * The mime type of the data.
   */
  protected String mimeType = null;

  /**
   * The character encoding of the data if appropriate, or null if not.
   */
  protected String characterEncoding = null;

  /**
   * Constructor that fills the SignatureData.
   * 
   * <p>
   * The charactor encoding is set to null, so this constructor is primarily for
   * signature data that has no character encoding (e.g. binary data).
   * </p>
   * 
   * @param data
   *          The signature data.
   * @param mime_type
   *          The mime type of the data.
   */
  public SignatureDataImpl(byte[] data, String mime_type)
  {
    this.data = data;
    this.mimeType = mime_type;
    this.characterEncoding = null;
  }

  /**
   * Constructor that fills the SignatureData.
   * 
   * <p>
   * Use this constructor for textual data as it allows to provide the character
   * encoding.
   * </p>
   * 
   * @param data
   *          The signature data.
   * @param mime_type
   *          The mime type of the data.
   * @param character_encoding
   *          The character encoding of the data if appropriate, or null if not.
   */
  public SignatureDataImpl(byte[] data, String mime_type, String character_encoding)
  {
    this.data = data;
    this.mimeType = mime_type;
    this.characterEncoding = character_encoding;
  }

  /**
   * @see at.knowcenter.wag.egov.egiz.sig.SignatureData#getData()
   */
  public byte[] getData()
  {
    return this.data;
  }

  /**
   * @see at.knowcenter.wag.egov.egiz.sig.SignatureData#getMimeType()
   */
  public String getMimeType()
  {
    return this.mimeType;
  }

  /**
   * @see at.knowcenter.wag.egov.egiz.sig.SignatureData#getCharacterEncoding()
   */
  public String getCharacterEncoding()
  {
    return this.characterEncoding;
  }
}