iaik.ixsil.algorithms

Class TransformImplCanonicalXML

java.lang.Object

iaik.ixsil.algorithms.Algorithm

iaik.ixsil.algorithms.Transform

iaik.ixsil.algorithms.TransformImplCanonicalXML

Direct Known Subclasses:

TransformImplCanonicalXMLWithComments

public class TransformImplCanonicalXML
extends Transform

Provides an transform implementation of the Canonical XML canonicalization algorithm. Comments will be omitted.

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.lang.String	DEFAULT_ALGORITHM_URI_ The default algorithm URI for this algorithm implementation.
protected boolean	omitComments_ Contains the information wheter to omit comments or not.

Fields inherited from class iaik.ixsil.algorithms.Transform

inputNodeSet_, inputOctetStream_, inputURI_

Fields inherited from class iaik.ixsil.algorithms.Algorithm

uri_

Constructor Summary

Constructors

Constructor and Description
TransformImplCanonicalXML() Standard constructor.

Method Summary

Methods

Modifier and Type	Method and Description
org.w3c.dom.Element	toElement(org.w3c.dom.Document signatureDOMDoc) Returns the DOM element representation of the transform.
java.lang.Object	transform() Creates a canonical physical representation of the specified input according to the standard mentioned in the description of this class.

Methods inherited from class iaik.ixsil.algorithms.Transform

distributeNSDeclarations, setInput, setInput, skipStylesheetElem, withdrawDistributedNSDeclarations

Methods inherited from class iaik.ixsil.algorithms.Algorithm

getURI, setParameters, setURI

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_ALGORITHM_URI_

protected static final java.lang.String DEFAULT_ALGORITHM_URI_

The default algorithm URI for this algorithm implementation.

See Also:

Constant Field Values

omitComments_

protected boolean omitComments_

Contains the information wheter to omit comments or not. Has a fix value of true for this class, but can be changed by superclasses.

Constructor Detail

TransformImplCanonicalXML

public TransformImplCanonicalXML()

Standard constructor. Sets the default value for the algorithm URI to http://www.w3.org/TR/2001/REC-xml-c14n-20010315.

Method Detail

toElement

public org.w3c.dom.Element toElement(org.w3c.dom.Document signatureDOMDoc)
                              throws AlgorithmException

Returns the DOM element representation of the transform.

Specified by:

toElement in class Algorithm

Parameters:

signatureDOMDoc - The DOM document which should be used to create necessary DOM nodes.

Returns:

the DOM element representation of the transform.

Throws:

AlgorithmException - if no identifying URI has been specified for this transform.

transform

public java.lang.Object transform()
                           throws AlgorithmException

Creates a canonical physical representation of the specified input according to the standard mentioned in the description of this class.

If the input has been specified as an octet stream with method Transform.setInput(InputStream, URI), this octet stream is treated as the physical representation of a well-formed XML document. The octet stream will be parsed, and a XPath node set will be produced containing all nodes of the XML document.

Alternatively, the input can be specified directly as XPath node set with method Transform.setInput(NodeList, URI).

.

In any case, the XPath node set is converted to the canonical physical representation as definied in the standard mentioned in the description of this class.

Specified by:

transform in class Transform

Returns:

the canonical physical representation of this transform's input as an octet stream.

Throws:

AlgorithmException - if no input has been set previously, if converting a XPath node set input into a octet stream input fails, or if computing the canonical physical representation fails for any reason.