Interface Transform

Field Detail

• BASE64

  static final String BASE64

  The Base64 transform algorithm URI.

  See Also:

  Constant Field Values

• ENVELOPED

  static final String ENVELOPED

  The Enveloped Signature transform algorithm URI.

  See Also:

  Constant Field Values

• XPATH

  static final String XPATH

  The XPath transform algorithm URI.

  See Also:

  Constant Field Values

• XPATH2

  static final String XPATH2

  The XPath Filter 2 transform algorithm URI.

  See Also:

  Constant Field Values

• XSLT

  static final String XSLT

  The XSLT transform algorithm URI.

  See Also:

  Constant Field Values

Method Detail

• getParameterSpec

  AlgorithmParameterSpec getParameterSpec()

  Returns the algorithm-specific input parameters associated with this Transform.

  The returned parameters can be typecast to a TransformParameterSpec object.

  Specified by:

  getParameterSpec in interface AlgorithmMethod

  Returns:

  the algorithm-specific input parameters (may be null if not specified)

• transform

  Data transform(Data data,
               XMLCryptoContext context)
                 throws TransformException

  Transforms the specified data using the underlying transform algorithm.

  Parameters:

  data - the data to be transformed

  context - the XMLCryptoContext containing additional context (may be null if not applicable)

  Returns:

  the transformed data

  Throws:

  NullPointerException - if data is null

  TransformException - if an error occurs while executing the transform

• transform

  Data transform(Data data,
               XMLCryptoContext context,
               OutputStream os)
                 throws TransformException

  Transforms the specified data using the underlying transform algorithm. If the output of this transform is an OctetStreamData, then this method returns null and the bytes are written to the specified OutputStream. Otherwise, the OutputStream is ignored and the method behaves as if transform(Data, XMLCryptoContext) were invoked.

  Parameters:

  data - the data to be transformed

  context - the XMLCryptoContext containing additional context (may be null if not applicable)

  os - the OutputStream that should be used to write the transformed data to

  Returns:

  the transformed data (or null if the data was written to the OutputStream parameter)

  Throws:

  NullPointerException - if data or os is null

  TransformException - if an error occurs while executing the transform