org.nuiton.util
Class DigestGenerator

java.lang.Object
  org.nuiton.util.DigestGenerator

public class DigestGenerator
extends Object

Helper class to provide the functionality of the digest value generation. This is an implementation of the DHASH algorithm on . TODO tchemit 2010-08-25 : This class is a nightmare ? we talk about digest mixed with dom nodes ? TODO tchemit 2010-08-25 : Should have more to explain the purpose (javadoc, author, since...) or (rename | split) this class.

Field Summary

static String	md5DigestAlgorithm String representing the MD5 digest algorithm
static String	sha1DigestAlgorithm String representing the SHA1 digest algorithm
static String	shaDigestAlgorithm String representing the SHA digest algorithm
static String	UNICODE_BIG_UNMARKED

Constructor Summary

DigestGenerator()

Method Summary

boolean	compareAttribute(Attr attribute, Attr comparingAttribute, String digestAlgorithm) Compares two Attributes for the XML equality
boolean	compareDocument(Document document, Document comparingDocument, String digestAlgorithm) Compares two Documents for the XML equality
boolean	compareNode(Node node, Node comparingNode, String digestAlgorithm) Compares two Nodes for the XML equality
Collection	getAttributesWithoutNS(Element element) Gets the collection of attributes which are none namespace declarations for an Element
byte[]	getDigest(Attr attribute, String digestAlgorithm) This method is an overloaded method for the digest generation for Attr
byte[]	getDigest(Document document, String digestAlgorithm) This method is an overloaded method for the digest generation for Document
byte[]	getDigest(Element element, String digestAlgorithm) This method is an overloaded method for the digest generation for Element
byte[]	getDigest(Node node, String digestAlgorithm) This method is an overloaded method for the digest generation for Node
byte[]	getDigest(ProcessingInstruction pi, String digestAlgorithm) This method is an overloaded method for the digest generation for ProcessingInstruction
byte[]	getDigest(Text text, String digestAlgorithm) This method is an overloaded method for the digest generation for Text
String	getExpandedName(Attr attribute) This method is an overloaded method for getting the expanded name namespaceURI followed by the local name for Attr
String	getExpandedName(Element element) This method is an overloaded method for getting the expanded name namespaceURI followed by the local name for Element
String	getStringRepresentation(byte[] array) Gets the String representation of the byte array
Collection	getValidElements(Document document) Gets the valid element collection of an Document.

Methods inherited from class java.lang.Object

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

Field Detail

UNICODE_BIG_UNMARKED

public static final String UNICODE_BIG_UNMARKED

See Also:

Constant Field Values

md5DigestAlgorithm

public static final String md5DigestAlgorithm

String representing the MD5 digest algorithm

See Also:

Constant Field Values

shaDigestAlgorithm

public static final String shaDigestAlgorithm

String representing the SHA digest algorithm

See Also:

Constant Field Values

sha1DigestAlgorithm

public static final String sha1DigestAlgorithm

String representing the SHA1 digest algorithm

See Also:

Constant Field Values

Constructor Detail

DigestGenerator

public DigestGenerator()

Method Detail

getDigest

public byte[] getDigest(Document document,
                        String digestAlgorithm)
                 throws Exception

This method is an overloaded method for the digest generation for Document

Parameters:

document -

digestAlgorithm -

Returns:

Returns a byte array representing the calculated digest

Throws:

Exception

getDigest

public byte[] getDigest(Node node,
                        String digestAlgorithm)
                 throws Exception

This method is an overloaded method for the digest generation for Node

Parameters:

node -

digestAlgorithm -

Returns:

Returns a byte array representing the calculated digest value

Throws:

Exception

getDigest

public byte[] getDigest(Element element,
                        String digestAlgorithm)
                 throws Exception

This method is an overloaded method for the digest generation for Element

Parameters:

element -

digestAlgorithm -

Returns:

Returns a byte array representing the calculated digest value

Throws:

Exception

getDigest

public byte[] getDigest(ProcessingInstruction pi,
                        String digestAlgorithm)
                 throws Exception

This method is an overloaded method for the digest generation for ProcessingInstruction

Parameters:

pi -

digestAlgorithm -

Returns:

Returns a byte array representing the calculated digest value

Throws:

Exception

getDigest

public byte[] getDigest(Attr attribute,
                        String digestAlgorithm)
                 throws Exception

This method is an overloaded method for the digest generation for Attr

Parameters:

attribute -

digestAlgorithm -

Returns:

Returns a byte array representing the calculated digest value

Throws:

Exception

getDigest

public byte[] getDigest(Text text,
                        String digestAlgorithm)
                 throws Exception

This method is an overloaded method for the digest generation for Text

Parameters:

text -

digestAlgorithm -

Returns:

Returns a byte array representing the calculated digest value

Throws:

Exception

getExpandedName

public String getExpandedName(Element element)

This method is an overloaded method for getting the expanded name namespaceURI followed by the local name for Element

Parameters:

element -

Returns:

Returns the expanded name of Element

getExpandedName

public String getExpandedName(Attr attribute)

This method is an overloaded method for getting the expanded name namespaceURI followed by the local name for Attr

Parameters:

attribute -

Returns:

Returns the expanded name of the Attr

getAttributesWithoutNS

public Collection getAttributesWithoutNS(Element element)

Gets the collection of attributes which are none namespace declarations for an Element

Parameters:

element -

Returns:

Returns the collection of attributes which are none namespace declarations

getValidElements

public Collection getValidElements(Document document)

Gets the valid element collection of an Document. Element and ProcessingInstruction only

Parameters:

document -

Returns:

Returns a collection of ProcessingInstructions and Elements

getStringRepresentation

public String getStringRepresentation(byte[] array)

Gets the String representation of the byte array

Parameters:

array -

Returns:

Returns the String of the byte

compareNode

public boolean compareNode(Node node,
                           Node comparingNode,
                           String digestAlgorithm)
                    throws Exception

Compares two Nodes for the XML equality

Parameters:

node -

comparingNode -

digestAlgorithm -

Returns:

Returns true if the Node XML contents are equal

Throws:

Exception

compareDocument

public boolean compareDocument(Document document,
                               Document comparingDocument,
                               String digestAlgorithm)
                        throws Exception

Compares two Documents for the XML equality

Parameters:

document -

comparingDocument -

digestAlgorithm -

Returns:

Returns true if the Document XML content are equal

Throws:

Exception

compareAttribute

public boolean compareAttribute(Attr attribute,
                                Attr comparingAttribute,
                                String digestAlgorithm)
                         throws Exception

Compares two Attributes for the XML equality

Parameters:

attribute -

comparingAttribute -

digestAlgorithm -

Returns:

Returns true if the Document XML content are equal

Throws:

Exception