org.apache.xml.dtm.ref
Class DTMNodeProxy

java.lang.Object
  |
  +--org.apache.xml.dtm.ref.DTMNodeProxy

public class DTMNodeProxy

extends java.lang.Object

implements Node, Document, Text, Element, Attr, ProcessingInstruction, Comment, DocumentFragment

**For internal use only** DTMNodeProxy presents a DOM Node API front-end to the DTM model.

It does _not_ attempt to address the "node identity" question; no effort is made to prevent the creation of multiple proxies referring to a single DTM node. Users can create a mechanism for managing this, or relinquish the use of "==" and use the .sameNodeAs() mechanism, which is under consideration for future versions of the DOM.

DTMNodeProxy may be subclassed further to present specific DOM node types.

See Also:

org.w3c.dom

Field Summary

DTM	dtm The DTM for this node.

Constructor Summary

DTMNodeProxy(DTM dtm, int node)
Create a DTMNodeProxy Node representing a specific Node in a DTM

Method Summary

Node	adoptNode(Node source) NEEDSDOC Method adoptNode NEEDSDOC @param source NEEDSDOC (adoptNode) @return
Node	appendChild(Node newChild)
void	appendData(java.lang.String arg)
Node	cloneNode(boolean deep)
Attr	createAttribute(java.lang.String name)
Attr	createAttributeNS(java.lang.String namespaceURI, java.lang.String qualifiedName)
CDATASection	createCDATASection(java.lang.String data)
Comment	createComment(java.lang.String data)
DocumentFragment	createDocumentFragment()
Element	createElement(java.lang.String tagName)
Element	createElementNS(java.lang.String namespaceURI, java.lang.String qualifiedName)
EntityReference	createEntityReference(java.lang.String name)
ProcessingInstruction	createProcessingInstruction(java.lang.String target, java.lang.String data)
Text	createTextNode(java.lang.String data)
void	deleteData(int offset, int count)
boolean	equals(Node node) Test for equality based on node number.
boolean	equals(java.lang.Object node) Test for equality based on node number.
java.lang.String	getAttribute(java.lang.String name)
Attr	getAttributeNode(java.lang.String name)
Attr	getAttributeNodeNS(java.lang.String namespaceURI, java.lang.String localName)
java.lang.String	getAttributeNS(java.lang.String namespaceURI, java.lang.String localName)
NamedNodeMap	getAttributes()
NodeList	getChildNodes()
java.lang.String	getData()
DocumentType	getDoctype()
Element	getDocumentElement() This is a bit of a problem in DTM, since a DTM may be a Document Fragment and hence not have a clear-cut Document Element.
DTM	getDTM() NON-DOM: Return the DTM model
int	getDTMNodeNumber() NON-DOM: Return the DTM node number
Element	getElementById(java.lang.String elementId)
NodeList	getElementsByTagName(java.lang.String tagname)
NodeList	getElementsByTagNameNS(java.lang.String namespaceURI, java.lang.String localName)
java.lang.String	getEncoding() EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..
Node	getFirstChild()
DOMImplementation	getImplementation()
Node	getLastChild()
int	getLength()
java.lang.String	getLocalName()
java.lang.String	getName()
java.lang.String	getNamespaceURI()
Node	getNextSibling()
java.lang.String	getNodeName()
short	getNodeType()
java.lang.String	getNodeValue()
Document	getOwnerDocument()
Element	getOwnerElement() Get the owner element of an attribute.
Node	getOwnerNode()
Node	getParentNode()
java.lang.String	getPrefix()
Node	getPreviousSibling()
boolean	getSpecified()
boolean	getStandalone() EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..
boolean	getStrictErrorChecking() EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..
java.lang.String	getStringValue()
java.lang.String	getTagName()
java.lang.String	getTarget() A PI's "target" states what processor channel the PI's data should be directed to.
java.lang.String	getValue()
java.lang.String	getVersion() EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..
boolean	hasAttribute(java.lang.String name) Method hasAttribute
boolean	hasAttributeNS(java.lang.String name, java.lang.String x) Method hasAttributeNS
boolean	hasAttributes() Introduced in DOM Level 2.
boolean	hasChildNodes()
Node	importNode(Node importedNode, boolean deep)
Node	insertBefore(Node newChild, Node refChild)
void	insertData(int offset, java.lang.String arg)
boolean	isSupported(java.lang.String feature, java.lang.String version) Ask whether we support a given DOM feature.
void	normalize()
void	removeAttribute(java.lang.String name)
Attr	removeAttributeNode(Attr oldAttr)
void	removeAttributeNS(java.lang.String namespaceURI, java.lang.String localName)
Node	removeChild(Node oldChild)
Node	replaceChild(Node newChild, Node oldChild)
void	replaceData(int offset, int count, java.lang.String arg)
boolean	sameNodeAs(Node other) FUTURE DOM: Test node identity, in lieu of Node==Node
void	setAttribute(java.lang.String name, java.lang.String value)
Attr	setAttributeNode(Attr newAttr)
Attr	setAttributeNodeNS(Attr newAttr)
void	setAttributeNS(java.lang.String namespaceURI, java.lang.String qualifiedName, java.lang.String value)
void	setData(java.lang.String data)
void	setEncoding(java.lang.String encoding) EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..
void	setNodeValue(java.lang.String nodeValue)
void	setPrefix(java.lang.String prefix)
void	setStandalone(boolean standalone) EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..
void	setStrictErrorChecking(boolean strictErrorChecking) EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..
void	setValue(java.lang.String value)
void	setVersion(java.lang.String version) EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..
Text	splitText(int offset)
java.lang.String	substringData(int offset, int count)
boolean	supports(java.lang.String feature, java.lang.String version) Ask whether we support a given DOM feature.

Methods inherited from class java.lang.Object

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

Field Detail

dtm

public DTM dtm

The DTM for this node.

Constructor Detail

DTMNodeProxy

public DTMNodeProxy(DTM dtm,
                    int node)

Create a DTMNodeProxy Node representing a specific Node in a DTM

Parameters:

dtm - The DTM Reference, must be non-null.

node - The DTM node handle.

Method Detail

getDTM

public final DTM getDTM()

NON-DOM: Return the DTM model

Returns:

The DTM that this proxy is a representative for.

getDTMNodeNumber

public final int getDTMNodeNumber()

NON-DOM: Return the DTM node number

Returns:

The DTM node handle.

equals

public final boolean equals(Node node)

Test for equality based on node number.

Parameters:

node - A DTM node proxy reference.

Returns:

true if the given node has the same handle as this node.

equals

public final boolean equals(java.lang.Object node)

Test for equality based on node number.

Parameters:

node - A DTM node proxy reference.

Returns:

true if the given node has the same handle as this node.

Overrides:

equals in class java.lang.Object

sameNodeAs

public final boolean sameNodeAs(Node other)

FUTURE DOM: Test node identity, in lieu of Node==Node

Parameters:

other -

Returns:

true if the given node has the same handle as this node.

getNodeName

public final java.lang.String getNodeName()

Specified by:

getNodeName in interface Node

Returns:

See Also:

Node

getTarget

public final java.lang.String getTarget()

A PI's "target" states what processor channel the PI's data should be directed to. It is defined differently in HTML and XML.

In XML, a PI's "target" is the first (whitespace-delimited) token following the " In HTML, target is always null.

Note that getNodeName is aliased to getTarget.

Specified by:

getTarget in interface ProcessingInstruction

Returns:

getLocalName

public final java.lang.String getLocalName()

Specified by:

getLocalName in interface Node

Returns:

See Also:

as of DOM Level 2

getPrefix

public final java.lang.String getPrefix()

Specified by:

getPrefix in interface Node

Returns:

The prefix for this node.

See Also:

as of DOM Level 2

setPrefix

public final void setPrefix(java.lang.String prefix)
                     throws DOMException

Specified by:

setPrefix in interface Node

Parameters:

prefix -

Throws:

DOMException -

See Also:

as of DOM Level 2 -- DTMNodeProxy is read-only

getNamespaceURI

public final java.lang.String getNamespaceURI()

Specified by:

getNamespaceURI in interface Node

Returns:

See Also:

as of DOM Level 2

supports

public final boolean supports(java.lang.String feature,
                              java.lang.String version)

Ask whether we support a given DOM feature. In fact, we do not _fully_ support any DOM feature -- we're a read-only subset -- so arguably we should always return false. Or we could say that we support DOM Core Level 2 but all nodes are read-only. Unclear which answer is least misleading. NON-DOM method. This was present in early drafts of DOM Level 2, but was renamed isSupported. It's present here only because it's cheap, harmless, and might help some poor fool who is still trying to use an early Working Draft of the DOM.

Parameters:

feature -

version -

Returns:

false

isSupported

public final boolean isSupported(java.lang.String feature,
                                 java.lang.String version)

Ask whether we support a given DOM feature. In fact, we do not _fully_ support any DOM feature -- we're a read-only subset -- so arguably we should always return false.

Specified by:

isSupported in interface Node

Parameters:

feature -

version -

Returns:

false

See Also:

as of DOM Level 2

getNodeValue

public final java.lang.String getNodeValue()
                                    throws DOMException

Specified by:

getNodeValue in interface Node

Returns:

Throws:

DOMException -

See Also:

Node

getStringValue

public final java.lang.String getStringValue()
                                      throws DOMException

Returns:

The string value of the node

Throws:

DOMException -

setNodeValue

public final void setNodeValue(java.lang.String nodeValue)
                        throws DOMException

Specified by:

setNodeValue in interface Node

Parameters:

nodeValue -

Throws:

DOMException -

See Also:

-- DTMNodeProxy is read-only

getNodeType

public final short getNodeType()

Specified by:

getNodeType in interface Node

Returns:

See Also:

Node

getParentNode

public final Node getParentNode()

Specified by:

getParentNode in interface Node

Returns:

See Also:

Node

getOwnerNode

public final Node getOwnerNode()

Returns:

See Also:

Node

getChildNodes

public final NodeList getChildNodes()

Specified by:

getChildNodes in interface Node

Returns:

See Also:

Node

getFirstChild

public final Node getFirstChild()

Specified by:

getFirstChild in interface Node

Returns:

See Also:

Node

getLastChild

public final Node getLastChild()

Specified by:

getLastChild in interface Node

Returns:

See Also:

Node

getPreviousSibling

public final Node getPreviousSibling()

Specified by:

getPreviousSibling in interface Node

Returns:

See Also:

Node

getNextSibling

public final Node getNextSibling()

Specified by:

getNextSibling in interface Node

Returns:

See Also:

Node

getAttributes

public final NamedNodeMap getAttributes()

Specified by:

getAttributes in interface Node

Returns:

See Also:

Node

hasAttribute

public boolean hasAttribute(java.lang.String name)

Method hasAttribute

Specified by:

hasAttribute in interface Element

Parameters:

name - (hasAttribute) @return

hasAttributeNS

public boolean hasAttributeNS(java.lang.String name,
                              java.lang.String x)

Method hasAttributeNS

Specified by:

hasAttributeNS in interface Element

Parameters:

name -

x - (hasAttributeNS) @return

getOwnerDocument

public final Document getOwnerDocument()

Specified by:

getOwnerDocument in interface Node

Returns:

See Also:

Node

insertBefore

public final Node insertBefore(Node newChild,
                               Node refChild)
                        throws DOMException

Specified by:

insertBefore in interface Node

Parameters:

newChild -

refChild -

Returns:

Throws:

DOMException -

See Also:

-- DTMNodeProxy is read-only

replaceChild

public final Node replaceChild(Node newChild,
                               Node oldChild)
                        throws DOMException

Specified by:

replaceChild in interface Node

Parameters:

newChild -

oldChild -

Returns:

Throws:

DOMException -

See Also:

-- DTMNodeProxy is read-only

removeChild

public final Node removeChild(Node oldChild)
                       throws DOMException

Specified by:

removeChild in interface Node

Parameters:

oldChild -

Returns:

Throws:

DOMException -

See Also:

-- DTMNodeProxy is read-only

appendChild

public final Node appendChild(Node newChild)
                       throws DOMException

Specified by:

appendChild in interface Node

Parameters:

newChild -

Returns:

Throws:

DOMException -

See Also:

-- DTMNodeProxy is read-only

hasChildNodes

public final boolean hasChildNodes()

Specified by:

hasChildNodes in interface Node

Returns:

See Also:

Node

cloneNode

public final Node cloneNode(boolean deep)

Specified by:

cloneNode in interface Node

Parameters:

deep -

Returns:

See Also:

-- DTMNodeProxy is read-only

getDoctype

public final DocumentType getDoctype()

Specified by:

getDoctype in interface Document

Returns:

See Also:

Document

getImplementation

public final DOMImplementation getImplementation()

Specified by:

getImplementation in interface Document

Returns:

See Also:

Document

getDocumentElement

public final Element getDocumentElement()

This is a bit of a problem in DTM, since a DTM may be a Document Fragment and hence not have a clear-cut Document Element. We can make it work in the well-formed cases but would that be confusing for others?

Specified by:

getDocumentElement in interface Document

Returns:

See Also:

Document

createElement

public final Element createElement(java.lang.String tagName)
                            throws DOMException

Specified by:

createElement in interface Document

Parameters:

tagName -

Returns:

Throws:

DOMException -

See Also:

Document

createDocumentFragment

public final DocumentFragment createDocumentFragment()

Specified by:

createDocumentFragment in interface Document

Returns:

See Also:

Document

createTextNode

public final Text createTextNode(java.lang.String data)

Specified by:

createTextNode in interface Document

Parameters:

data -

Returns:

See Also:

Document

createComment

public final Comment createComment(java.lang.String data)

Specified by:

createComment in interface Document

Parameters:

data -

Returns:

See Also:

Document

createCDATASection

public final CDATASection createCDATASection(java.lang.String data)
                                      throws DOMException

Specified by:

createCDATASection in interface Document

Parameters:

data -

Returns:

Throws:

DOMException -

See Also:

Document

createProcessingInstruction

public final ProcessingInstruction createProcessingInstruction(java.lang.String target,
                                                               java.lang.String data)
                                                        throws DOMException

Specified by:

createProcessingInstruction in interface Document

Parameters:

target -

data -

Returns:

Throws:

DOMException -

See Also:

Document

createAttribute

public final Attr createAttribute(java.lang.String name)
                           throws DOMException

Specified by:

createAttribute in interface Document

Parameters:

name -

Returns:

Throws:

DOMException -

See Also:

Document

createEntityReference

public final EntityReference createEntityReference(java.lang.String name)
                                            throws DOMException

Specified by:

createEntityReference in interface Document

Parameters:

name -

Returns:

Throws:

DOMException -

See Also:

Document

getElementsByTagName

public final NodeList getElementsByTagName(java.lang.String tagname)

Specified by:

getElementsByTagName in interface Document

Parameters:

tagname -

Returns:

See Also:

Document

importNode

public final Node importNode(Node importedNode,
                             boolean deep)
                      throws DOMException

Specified by:

importNode in interface Document

Parameters:

importedNode -

deep -

Returns:

Throws:

DOMException -

See Also:

as of DOM Level 2 -- DTMNodeProxy is read-only

createElementNS

public final Element createElementNS(java.lang.String namespaceURI,
                                     java.lang.String qualifiedName)
                              throws DOMException

Specified by:

createElementNS in interface Document

Parameters:

namespaceURI -

qualifiedName -

Returns:

Throws:

DOMException -

See Also:

as of DOM Level 2

createAttributeNS

public final Attr createAttributeNS(java.lang.String namespaceURI,
                                    java.lang.String qualifiedName)
                             throws DOMException

Specified by:

createAttributeNS in interface Document

Parameters:

namespaceURI -

qualifiedName -

Returns:

Throws:

DOMException -

See Also:

as of DOM Level 2

getElementsByTagNameNS

public final NodeList getElementsByTagNameNS(java.lang.String namespaceURI,
                                             java.lang.String localName)

Specified by:

getElementsByTagNameNS in interface Document

Parameters:

namespaceURI -

localName -

Returns:

See Also:

as of DOM Level 2

getElementById

public final Element getElementById(java.lang.String elementId)

Specified by:

getElementById in interface Document

Parameters:

elementId -

Returns:

See Also:

as of DOM Level 2

splitText

public final Text splitText(int offset)
                     throws DOMException

Specified by:

splitText in interface Text

Parameters:

offset -

Returns:

Throws:

DOMException -

See Also:

Text

getData

public final java.lang.String getData()
                               throws DOMException

Specified by:

getData in interface ProcessingInstruction

Returns:

Throws:

DOMException -

See Also:

CharacterData

setData

public final void setData(java.lang.String data)
                   throws DOMException

Specified by:

setData in interface ProcessingInstruction

Parameters:

data -

Throws:

DOMException -

See Also:

CharacterData

getLength

public final int getLength()

Returns:

See Also:

CharacterData

substringData

public final java.lang.String substringData(int offset,
                                            int count)
                                     throws DOMException

Parameters:

offset -

count -

Returns:

Throws:

DOMException -

See Also:

CharacterData

appendData

public final void appendData(java.lang.String arg)
                      throws DOMException

Parameters:

arg -

Throws:

DOMException -

See Also:

CharacterData

insertData

public final void insertData(int offset,
                             java.lang.String arg)
                      throws DOMException

Parameters:

offset -

arg -

Throws:

DOMException -

See Also:

CharacterData

deleteData

public final void deleteData(int offset,
                             int count)
                      throws DOMException

Parameters:

offset -

count -

Throws:

DOMException -

See Also:

CharacterData

replaceData

public final void replaceData(int offset,
                              int count,
                              java.lang.String arg)
                       throws DOMException

Parameters:

offset -

count -

arg -

Throws:

DOMException -

See Also:

CharacterData

getTagName

public final java.lang.String getTagName()

Specified by:

getTagName in interface Element

Returns:

See Also:

Element

getAttribute

public final java.lang.String getAttribute(java.lang.String name)

Specified by:

getAttribute in interface Element

Parameters:

name -

Returns:

See Also:

Element

setAttribute

public final void setAttribute(java.lang.String name,
                               java.lang.String value)
                        throws DOMException

Specified by:

setAttribute in interface Element

Parameters:

name -

value -

Throws:

DOMException -

See Also:

Element

removeAttribute

public final void removeAttribute(java.lang.String name)
                           throws DOMException

Specified by:

removeAttribute in interface Element

Parameters:

name -

Throws:

DOMException -

See Also:

Element

getAttributeNode

public final Attr getAttributeNode(java.lang.String name)

Specified by:

getAttributeNode in interface Element

Parameters:

name -

Returns:

See Also:

Element

setAttributeNode

public final Attr setAttributeNode(Attr newAttr)
                            throws DOMException

Specified by:

setAttributeNode in interface Element

Parameters:

newAttr -

Returns:

Throws:

DOMException -

See Also:

Element

removeAttributeNode

public final Attr removeAttributeNode(Attr oldAttr)
                               throws DOMException

Specified by:

removeAttributeNode in interface Element

Parameters:

oldAttr -

Returns:

Throws:

DOMException -

See Also:

Element

hasAttributes

public boolean hasAttributes()

Introduced in DOM Level 2.

Specified by:

hasAttributes in interface Node

Returns:

normalize

public final void normalize()

Specified by:

normalize in interface Node

See Also:

Element

getAttributeNS

public final java.lang.String getAttributeNS(java.lang.String namespaceURI,
                                             java.lang.String localName)

Specified by:

getAttributeNS in interface Element

Parameters:

namespaceURI -

localName -

Returns:

See Also:

Element

setAttributeNS

public final void setAttributeNS(java.lang.String namespaceURI,
                                 java.lang.String qualifiedName,
                                 java.lang.String value)
                          throws DOMException

Specified by:

setAttributeNS in interface Element

Parameters:

namespaceURI -

qualifiedName -

value -

Throws:

DOMException -

See Also:

Element

removeAttributeNS

public final void removeAttributeNS(java.lang.String namespaceURI,
                                    java.lang.String localName)
                             throws DOMException

Specified by:

removeAttributeNS in interface Element

Parameters:

namespaceURI -

localName -

Throws:

DOMException -

See Also:

Element

getAttributeNodeNS

public final Attr getAttributeNodeNS(java.lang.String namespaceURI,
                                     java.lang.String localName)

Specified by:

getAttributeNodeNS in interface Element

Parameters:

namespaceURI -

localName -

Returns:

See Also:

Element

setAttributeNodeNS

public final Attr setAttributeNodeNS(Attr newAttr)
                              throws DOMException

Specified by:

setAttributeNodeNS in interface Element

Parameters:

newAttr -

Returns:

Throws:

DOMException -

See Also:

Element

getName

public final java.lang.String getName()

Specified by:

getName in interface Attr

Returns:

See Also:

Attr

getSpecified

public final boolean getSpecified()

Specified by:

getSpecified in interface Attr

Returns:

See Also:

Attr

getValue

public final java.lang.String getValue()

Specified by:

getValue in interface Attr

Returns:

See Also:

Attr

setValue

public final void setValue(java.lang.String value)

Specified by:

setValue in interface Attr

Parameters:

value -

See Also:

Attr

getOwnerElement

public final Element getOwnerElement()

Get the owner element of an attribute.

Specified by:

getOwnerElement in interface Attr

Returns:

See Also:

as of DOM Level 2

adoptNode

public Node adoptNode(Node source)
               throws DOMException

NEEDSDOC Method adoptNode NEEDSDOC @param source NEEDSDOC (adoptNode) @return

Throws:

DOMException -

getEncoding

public java.lang.String getEncoding()

EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..

An attribute specifying, as part of the XML declaration, the encoding of this document. This is null when unspecified.

Since:

DOM Level 3 NEEDSDOC ($objectName$) @return

setEncoding

public void setEncoding(java.lang.String encoding)

EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..

An attribute specifying, as part of the XML declaration, the encoding of this document. This is null when unspecified.

Since:

DOM Level 3 NEEDSDOC @param encoding

getStandalone

public boolean getStandalone()

EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..

An attribute specifying, as part of the XML declaration, whether this document is standalone.

Since:

DOM Level 3 NEEDSDOC ($objectName$) @return

setStandalone

public void setStandalone(boolean standalone)

EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..

An attribute specifying, as part of the XML declaration, whether this document is standalone.

Since:

DOM Level 3 NEEDSDOC @param standalone

getStrictErrorChecking

public boolean getStrictErrorChecking()

EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..

An attribute specifying whether errors checking is enforced or not. When set to false, the implementation is free to not test every possible error case normally defined on DOM operations, and not raise any DOMException. In case of error, the behavior is undefined. This attribute is true by defaults.

Since:

DOM Level 3 NEEDSDOC ($objectName$) @return

setStrictErrorChecking

public void setStrictErrorChecking(boolean strictErrorChecking)

EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..

An attribute specifying whether errors checking is enforced or not. When set to false, the implementation is free to not test every possible error case normally defined on DOM operations, and not raise any DOMException. In case of error, the behavior is undefined. This attribute is true by defaults.

Since:

DOM Level 3 NEEDSDOC @param strictErrorChecking

getVersion

public java.lang.String getVersion()

EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..

An attribute specifying, as part of the XML declaration, the version number of this document. This is null when unspecified.

Since:

DOM Level 3 NEEDSDOC ($objectName$) @return

setVersion

public void setVersion(java.lang.String version)

EXPERIMENTAL! Based on the Document Object Model (DOM) Level 3 Core Working Draft of 5 June 2001..

An attribute specifying, as part of the XML declaration, the version number of this document. This is null when unspecified.

Since:

DOM Level 3 NEEDSDOC @param version