Package org.jvnet.staxex.util

Class DOMStreamReader

java.lang.Object

org.jvnet.staxex.util.DOMStreamReader

All Implemented Interfaces:

NamespaceContext, XMLStreamConstants, XMLStreamReader

Direct Known Subclasses:

LazyEnvelopeStaxReader, SaajStaxReaderEx

public class DOMStreamReader
extends Object
implements XMLStreamReader, NamespaceContext

Create an XMLStreamReader on top of a DOM tree.

Since various libraries as well as users often create "incorrect" DOM node, this class spends a lot of efforts making sure that broken DOM trees are nevertheless interpreted correctly.

For example, if a DOM level 1 tree is passed, each method will attempt to return the correct value by using Node.getNodeName().

Similarly, if DOM is missing explicit namespace declarations, this class attempts to emulate necessary declarations.

Author:

Santiago.PericasGeertsen@sun.com, Kohsuke Kawaguchi

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static final class	DOMStreamReader.Scope	Namespace declarations on one element.

Field Summary

Fields

Modifier and Type	Field	Description
protected Node	_current	Current DOM node being traversed.
protected int	_state	State of this reader.
protected int	depth	Depth of the current element.
protected DOMStreamReader.Scope[]	scopes	DOMStreamReader.Scope buffer.
protected String	wholeText	If the reader points at the text node, its whole value.

Fields inherited from interface javax.xml.stream.XMLStreamConstants

ATTRIBUTE, CDATA, CHARACTERS, COMMENT, DTD, END_DOCUMENT, END_ELEMENT, ENTITY_DECLARATION, ENTITY_REFERENCE, NAMESPACE, NOTATION_DECLARATION, PROCESSING_INSTRUCTION, SPACE, START_DOCUMENT, START_ELEMENT

Constructor Summary

Constructors

Constructor	Description
DOMStreamReader()
DOMStreamReader(Node node)

Method Summary

Modifier and Type	Method	Description
protected int	_next()
void	close()
int	getAttributeCount()
String	getAttributeLocalName(int index)	Return an attribute's local name.
QName	getAttributeName(int index)	Return an attribute's qname.
String	getAttributeNamespace(int index)
String	getAttributePrefix(int index)
String	getAttributeType(int index)
String	getAttributeValue(int index)
String	getAttributeValue(String namespaceURI, String localName)
String	getCharacterEncodingScheme()
String	getElementText()
String	getEncoding()
int	getEventType()
String	getLocalName()	Return an element's local name.
Location	getLocation()
QName	getName()	Return an element's qname.
NamespaceContext	getNamespaceContext()
int	getNamespaceCount()
String	getNamespacePrefix(int index)
String	getNamespaceURI()
String	getNamespaceURI(int index)
String	getNamespaceURI(String prefix)	This method is not particularly fast, but shouldn't be called very often.
String	getPIData()
String	getPITarget()
String	getPrefix()
String	getPrefix(String nsUri)
Iterator	getPrefixes(String nsUri)
Object	getProperty(String str)
String	getText()
char[]	getTextCharacters()
int	getTextCharacters(int sourceStart, char[] target, int targetStart, int targetLength)
int	getTextLength()
int	getTextStart()
String	getVersion()
boolean	hasName()
boolean	hasNext()
boolean	hasText()
boolean	isAttributeSpecified(int param)
boolean	isCharacters()
boolean	isEndElement()
boolean	isStandalone()
boolean	isStartElement()
boolean	isWhiteSpace()
int	next()
int	nextTag()
void	require(int type, String namespaceURI, String localName)
void	setCurrentNode(Node node)
protected void	splitAttributes()	Called when the current node is Element to look at attribute list (which contains both ns decl and attributes in DOM) and split them to attributes-proper and namespace decls.
boolean	standaloneSet()

Methods inherited from class java.lang.Object

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

Field Details

_current

protected Node _current

Current DOM node being traversed.

wholeText

protected String wholeText

If the reader points at the text node, its whole value.

This is simply a cache of Text.getWholeText() of _current, but when a large binary data sent as base64 text, this could get very much non-trivial.

scopes

protected DOMStreamReader.Scope[] scopes

DOMStreamReader.Scope buffer.

depth

protected int depth

Depth of the current element. The first element gets depth==0. Also used as the index to scopes.

_state

protected int _state

State of this reader. Any of the valid states defined in StAX' XMLStreamConstants class.

Constructor Details

DOMStreamReader

public DOMStreamReader()

DOMStreamReader

public DOMStreamReader(Node node)

Method Details

setCurrentNode

public void setCurrentNode(Node node)

close

public void close()
           throws XMLStreamException

Specified by:

close in interface XMLStreamReader

Throws:

XMLStreamException

splitAttributes

protected void splitAttributes()

Called when the current node is Element to look at attribute list (which contains both ns decl and attributes in DOM) and split them to attributes-proper and namespace decls.

getAttributeCount

public int getAttributeCount()

Specified by:

getAttributeCount in interface XMLStreamReader

getAttributeLocalName

public String getAttributeLocalName(int index)

Return an attribute's local name. Handle the case of DOM level 1 nodes.

Specified by:

getAttributeLocalName in interface XMLStreamReader

getAttributeName

public QName getAttributeName(int index)

Return an attribute's qname. Handle the case of DOM level 1 nodes.

Specified by:

getAttributeName in interface XMLStreamReader

getAttributeNamespace

public String getAttributeNamespace(int index)

Specified by:

getAttributeNamespace in interface XMLStreamReader

getAttributePrefix

public String getAttributePrefix(int index)

Specified by:

getAttributePrefix in interface XMLStreamReader

getAttributeType

public String getAttributeType(int index)

Specified by:

getAttributeType in interface XMLStreamReader

getAttributeValue

public String getAttributeValue(int index)

Specified by:

getAttributeValue in interface XMLStreamReader

getAttributeValue

public String getAttributeValue(String namespaceURI,
 String localName)

Specified by:

getAttributeValue in interface XMLStreamReader

getCharacterEncodingScheme

public String getCharacterEncodingScheme()

Specified by:

getCharacterEncodingScheme in interface XMLStreamReader

getElementText

public String getElementText()
                      throws XMLStreamException

Specified by:

getElementText in interface XMLStreamReader

Throws:

XMLStreamException

getEncoding

public String getEncoding()

Specified by:

getEncoding in interface XMLStreamReader

getEventType

public int getEventType()

Specified by:

getEventType in interface XMLStreamReader

getLocalName

public String getLocalName()

Return an element's local name. Handle the case of DOM level 1 nodes.

Specified by:

getLocalName in interface XMLStreamReader

getLocation

public Location getLocation()

Specified by:

getLocation in interface XMLStreamReader

getName

public QName getName()

Return an element's qname. Handle the case of DOM level 1 nodes.

Specified by:

getName in interface XMLStreamReader

getNamespaceContext

public NamespaceContext getNamespaceContext()

Specified by:

getNamespaceContext in interface XMLStreamReader

getNamespaceCount

public int getNamespaceCount()

Specified by:

getNamespaceCount in interface XMLStreamReader

getNamespacePrefix

public String getNamespacePrefix(int index)

Specified by:

getNamespacePrefix in interface XMLStreamReader

getNamespaceURI

public String getNamespaceURI(int index)

Specified by:

getNamespaceURI in interface XMLStreamReader

getNamespaceURI

public String getNamespaceURI()

Specified by:

getNamespaceURI in interface XMLStreamReader

getNamespaceURI

public String getNamespaceURI(String prefix)

This method is not particularly fast, but shouldn't be called very often. If we start to use it more, we should keep track of the NS declarations using a NamespaceContext implementation instead.

Specified by:

getNamespaceURI in interface NamespaceContext

Specified by:

getNamespaceURI in interface XMLStreamReader

getPrefix

public String getPrefix(String nsUri)

Specified by:

getPrefix in interface NamespaceContext

getPrefixes

public Iterator getPrefixes(String nsUri)

Specified by:

getPrefixes in interface NamespaceContext

getPIData

public String getPIData()

Specified by:

getPIData in interface XMLStreamReader

getPITarget

public String getPITarget()

Specified by:

getPITarget in interface XMLStreamReader

getPrefix

public String getPrefix()

Specified by:

getPrefix in interface XMLStreamReader

getProperty

public Object getProperty(String str)
                   throws IllegalArgumentException

Specified by:

getProperty in interface XMLStreamReader

Throws:

IllegalArgumentException

getText

public String getText()

Specified by:

getText in interface XMLStreamReader

getTextCharacters

public char[] getTextCharacters()

Specified by:

getTextCharacters in interface XMLStreamReader

getTextCharacters

public int getTextCharacters(int sourceStart,
 char[] target,
 int targetStart,
 int targetLength)
                      throws XMLStreamException

Specified by:

getTextCharacters in interface XMLStreamReader

Throws:

XMLStreamException

getTextLength

public int getTextLength()

Specified by:

getTextLength in interface XMLStreamReader

getTextStart

public int getTextStart()

Specified by:

getTextStart in interface XMLStreamReader

getVersion

public String getVersion()

Specified by:

getVersion in interface XMLStreamReader

hasName

public boolean hasName()

Specified by:

hasName in interface XMLStreamReader

hasNext

public boolean hasNext()
                throws XMLStreamException

Specified by:

hasNext in interface XMLStreamReader

Throws:

XMLStreamException

hasText

public boolean hasText()

Specified by:

hasText in interface XMLStreamReader

isAttributeSpecified

public boolean isAttributeSpecified(int param)

Specified by:

isAttributeSpecified in interface XMLStreamReader

isCharacters

public boolean isCharacters()

Specified by:

isCharacters in interface XMLStreamReader

isEndElement

public boolean isEndElement()

Specified by:

isEndElement in interface XMLStreamReader

isStandalone

public boolean isStandalone()

Specified by:

isStandalone in interface XMLStreamReader

isStartElement

public boolean isStartElement()

Specified by:

isStartElement in interface XMLStreamReader

isWhiteSpace

public boolean isWhiteSpace()

Specified by:

isWhiteSpace in interface XMLStreamReader

next

public int next()
         throws XMLStreamException

Specified by:

next in interface XMLStreamReader

Throws:

XMLStreamException

_next

protected int _next()
             throws XMLStreamException

Throws:

XMLStreamException

nextTag

public int nextTag()
            throws XMLStreamException

Specified by:

nextTag in interface XMLStreamReader

Throws:

XMLStreamException

require

public void require(int type,
 String namespaceURI,
 String localName)
             throws XMLStreamException

Specified by:

require in interface XMLStreamReader

Throws:

XMLStreamException

standaloneSet

public boolean standaloneSet()

Specified by:

standaloneSet in interface XMLStreamReader