org.apache.xml.security.utils
Class XMLUtils

java.lang.Object
  org.apache.xml.security.utils.XMLUtils

public class XMLUtils
extends Object

DOM and XML accessibility and comfort functions.

Author:

Christian Geuer-Pollmann

Method Summary

static void	addReturnToElement(Element e) Method addReturnToElement
static void	circumventBug2650(Document doc) This method spreads all namespace attributes in a DOM document to their children.
static Set	convertNodelistToSet(NodeList xpathNodeSet) Method convertNodelistToSet
static Element	createDSctx(Document doc, String prefix, String namespace) Method createDSctx
static Element	createElementInSignatureSpace(Document doc, String elementName) Creates an Element in the XML Signature specification namespace.
static boolean	elementIsInEncryptionSpace(Element element, String localName) Returns true if the element is in XML Encryption namespace and the local name equals the supplied one.
static boolean	elementIsInSignatureSpace(Element element, String localName) Returns true if the element is in XML Signature namespace and the local name equals the supplied one.
static Set	excludeNodeFromSet(Node signatureElement, Set inputSet)
static String	getFullTextChildrenFromElement(Element element) Method getFullTextChildrenFromElement
static Element	getNextElement(Node el)
static Document	getOwnerDocument(Node node) This method returns the owner document of a particular node.
static Document	getOwnerDocument(Set xpathNodeSet) This method returns the first non-null owner document of the Node's in this Set.
static void	getSet(Node rootNode, Set result, Node exclude, boolean com)
static boolean	isDescendantOrSelf(Node ctx, Node descendantOrSelf) Returns true if the descendantOrSelf is on the descendant-or-self axis of the context node.
static void	outputDOM(Node contextNode, OutputStream os) Outputs a DOM tree to an OutputStream.
static void	outputDOM(Node contextNode, OutputStream os, boolean addPreamble) Outputs a DOM tree to an OutputStream.
static void	outputDOMc14nWithComments(Node contextNode, OutputStream os) Serializes the contextNode into the OutputStream, but supresses all Exceptions.
static Element	selectDsNode(Node sibling, String nodeName, int number)
static Element[]	selectDsNodes(Node sibling, String nodeName)
static Text	selectDsNodeText(Node sibling, String nodeName, int number)
static Element	selectNode(Node sibling, String uri, String nodeName, int number)
static Element[]	selectNodes(Node sibling, String uri, String nodeName)
static Text	selectNodeText(Node sibling, String uri, String nodeName, int number)
static Element	selectXencNode(Node sibling, String nodeName, int number)

Methods inherited from class java.lang.Object

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

Method Detail

getNextElement

public static Element getNextElement(Node el)

getSet

public static void getSet(Node rootNode,
                          Set result,
                          Node exclude,
                          boolean com)

Parameters:

rootNode -

result -

exclude -

com - wheather comments or not

outputDOM

public static void outputDOM(Node contextNode,
                             OutputStream os)

Outputs a DOM tree to an OutputStream.

Parameters:

contextNode - root node of the DOM tree

os - the OutputStream

outputDOM

public static void outputDOM(Node contextNode,
                             OutputStream os,
                             boolean addPreamble)

Outputs a DOM tree to an OutputStream. If an Exception is thrown during execution, it's StackTrace is output to System.out, but the Exception is not re-thrown.

Parameters:

contextNode - root node of the DOM tree

os - the OutputStream

addPreamble -

outputDOMc14nWithComments

public static void outputDOMc14nWithComments(Node contextNode,
                                             OutputStream os)

Serializes the contextNode into the OutputStream, but supresses all Exceptions.
NOTE: This should only be used for debugging purposes, NOT in a production environment; this method ignores all exceptions, so you won't notice if something goes wrong. If you're asking what is to be used in a production environment, simply use the code inside the try{} statement, but handle the Exceptions appropriately.

Parameters:

contextNode -

os -

getFullTextChildrenFromElement

public static String getFullTextChildrenFromElement(Element element)

Method getFullTextChildrenFromElement

Parameters:

element -

Returns:

the string of chi;ds

createElementInSignatureSpace

public static Element createElementInSignatureSpace(Document doc,
                                                    String elementName)

Creates an Element in the XML Signature specification namespace.

Parameters:

doc - the factory Document

elementName - the local name of the Element

Returns:

the Element

elementIsInSignatureSpace

public static boolean elementIsInSignatureSpace(Element element,
                                                String localName)

Returns true if the element is in XML Signature namespace and the local name equals the supplied one.

Parameters:

element -

localName -

Returns:

true if the element is in XML Signature namespace and the local name equals the supplied one

elementIsInEncryptionSpace

public static boolean elementIsInEncryptionSpace(Element element,
                                                 String localName)

Returns true if the element is in XML Encryption namespace and the local name equals the supplied one.

Parameters:

element -

localName -

Returns:

true if the element is in XML Encryption namespace and the local name equals the supplied one

getOwnerDocument

public static Document getOwnerDocument(Node node)

This method returns the owner document of a particular node. This method is necessary because it always returns a Document. Node.getOwnerDocument() returns null if the Node is a Document.

Parameters:

node -

Returns:

the owner document of the node

getOwnerDocument

public static Document getOwnerDocument(Set xpathNodeSet)

This method returns the first non-null owner document of the Node's in this Set. This method is necessary because it always returns a Document. Node.getOwnerDocument() returns null if the Node is a Document.

Parameters:

xpathNodeSet -

Returns:

the owner document

createDSctx

public static Element createDSctx(Document doc,
                                  String prefix,
                                  String namespace)

Method createDSctx

Parameters:

doc -

prefix -

namespace -

Returns:

the element.

addReturnToElement

public static void addReturnToElement(Element e)

Method addReturnToElement

Parameters:

e -

convertNodelistToSet

public static Set convertNodelistToSet(NodeList xpathNodeSet)

Method convertNodelistToSet

Parameters:

xpathNodeSet -

Returns:

the set with the nodelist

circumventBug2650

public static void circumventBug2650(Document doc)

This method spreads all namespace attributes in a DOM document to their children. This is needed because the XML Signature XPath transform must evaluate the XPath against all nodes in the input, even against XPath namespace nodes. Through a bug in XalanJ2, the namespace nodes are not fully visible in the Xalan XPath model, so we have to do this by hand in DOM spaces so that the nodes become visible in XPath space.

Parameters:

doc -

See Also:

Namespace axis resolution is not XPath compliant

selectDsNode

public static Element selectDsNode(Node sibling,
                                   String nodeName,
                                   int number)

Parameters:

sibling -

nodeName -

number -

Returns:

nodes with the constrain

selectXencNode

public static Element selectXencNode(Node sibling,
                                     String nodeName,
                                     int number)

Parameters:

sibling -

nodeName -

number -

Returns:

nodes with the constrain

selectDsNodeText

public static Text selectDsNodeText(Node sibling,
                                    String nodeName,
                                    int number)

Parameters:

sibling -

nodeName -

number -

Returns:

nodes with the constrain

selectNodeText

public static Text selectNodeText(Node sibling,
                                  String uri,
                                  String nodeName,
                                  int number)

Parameters:

sibling -

uri -

nodeName -

number -

Returns:

nodes with the constrain

selectNode

public static Element selectNode(Node sibling,
                                 String uri,
                                 String nodeName,
                                 int number)

Parameters:

sibling -

uri -

nodeName -

number -

Returns:

nodes with the constrain

selectDsNodes

public static Element[] selectDsNodes(Node sibling,
                                      String nodeName)

Parameters:

sibling -

nodeName -

Returns:

nodes with the constrain

selectNodes

public static Element[] selectNodes(Node sibling,
                                    String uri,
                                    String nodeName)

Parameters:

sibling -

uri -

nodeName -

Returns:

nodes with the constrain

excludeNodeFromSet

public static Set excludeNodeFromSet(Node signatureElement,
                                     Set inputSet)

Parameters:

signatureElement -

inputSet -

Returns:

nodes with the constrain

isDescendantOrSelf

public static boolean isDescendantOrSelf(Node ctx,
                                         Node descendantOrSelf)

Returns true if the descendantOrSelf is on the descendant-or-self axis of the context node.

Parameters:

ctx -

descendantOrSelf -

Returns:

true if the node is descendant