Package org.jvnet.staxex.util

Class DOMStreamReader

java.lang.Object

org.jvnet.staxex.util.DOMStreamReader

All Implemented Interfaces:

javax.xml.namespace.NamespaceContext, javax.xml.stream.XMLStreamConstants, javax.xml.stream.XMLStreamReader

public class DOMStreamReader
extends java.lang.Object
implements javax.xml.stream.XMLStreamReader, javax.xml.namespace.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 class	DOMStreamReader.Scope	Namespace declarations on one element.

Field Summary

Fields

Modifier and Type	Field	Description
protected org.w3c.dom.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 java.lang.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(org.w3c.dom.Node node)

Method Summary

Modifier and Type	Method	Description
protected int	_next()
void	close()
int	getAttributeCount()
java.lang.String	getAttributeLocalName(int index)	Return an attribute's local name.
javax.xml.namespace.QName	getAttributeName(int index)	Return an attribute's qname.
java.lang.String	getAttributeNamespace(int index)
java.lang.String	getAttributePrefix(int index)
java.lang.String	getAttributeType(int index)
java.lang.String	getAttributeValue(int index)
java.lang.String	getAttributeValue(java.lang.String namespaceURI, java.lang.String localName)
java.lang.String	getCharacterEncodingScheme()
java.lang.String	getElementText()
java.lang.String	getEncoding()
int	getEventType()
java.lang.String	getLocalName()	Return an element's local name.
javax.xml.stream.Location	getLocation()
javax.xml.namespace.QName	getName()	Return an element's qname.
javax.xml.namespace.NamespaceContext	getNamespaceContext()
int	getNamespaceCount()
java.lang.String	getNamespacePrefix(int index)
java.lang.String	getNamespaceURI()
java.lang.String	getNamespaceURI(int index)
java.lang.String	getNamespaceURI(java.lang.String prefix)	This method is not particularly fast, but shouldn't be called very often.
java.lang.String	getPIData()
java.lang.String	getPITarget()
java.lang.String	getPrefix()
java.lang.String	getPrefix(java.lang.String nsUri)
java.util.Iterator	getPrefixes(java.lang.String nsUri)
java.lang.Object	getProperty(java.lang.String str)
java.lang.String	getText()
char[]	getTextCharacters()
int	getTextCharacters(int sourceStart, char[] target, int targetStart, int targetLength)
int	getTextLength()
int	getTextStart()
java.lang.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, java.lang.String namespaceURI, java.lang.String localName)
void	setCurrentNode(org.w3c.dom.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 Detail

_current

protected org.w3c.dom.Node _current

Current DOM node being traversed.

wholeText

protected java.lang.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 Detail

DOMStreamReader

public DOMStreamReader()

DOMStreamReader

public DOMStreamReader(org.w3c.dom.Node node)

Method Detail

setCurrentNode

public void setCurrentNode(org.w3c.dom.Node node)

close

public void close()
           throws javax.xml.stream.XMLStreamException

Specified by:

close in interface javax.xml.stream.XMLStreamReader

Throws:

javax.xml.stream.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 javax.xml.stream.XMLStreamReader

getAttributeLocalName

public java.lang.String getAttributeLocalName(int index)

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

Specified by:

getAttributeLocalName in interface javax.xml.stream.XMLStreamReader

getAttributeName

public javax.xml.namespace.QName getAttributeName(int index)

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

Specified by:

getAttributeName in interface javax.xml.stream.XMLStreamReader

getAttributeNamespace

public java.lang.String getAttributeNamespace(int index)

Specified by:

getAttributeNamespace in interface javax.xml.stream.XMLStreamReader

getAttributePrefix

public java.lang.String getAttributePrefix(int index)

Specified by:

getAttributePrefix in interface javax.xml.stream.XMLStreamReader

getAttributeType

public java.lang.String getAttributeType(int index)

Specified by:

getAttributeType in interface javax.xml.stream.XMLStreamReader

getAttributeValue

public java.lang.String getAttributeValue(int index)

Specified by:

getAttributeValue in interface javax.xml.stream.XMLStreamReader

getAttributeValue

public java.lang.String getAttributeValue(java.lang.String namespaceURI,
                                          java.lang.String localName)

Specified by:

getAttributeValue in interface javax.xml.stream.XMLStreamReader

getCharacterEncodingScheme

public java.lang.String getCharacterEncodingScheme()

Specified by:

getCharacterEncodingScheme in interface javax.xml.stream.XMLStreamReader

getElementText

public java.lang.String getElementText()
                                throws javax.xml.stream.XMLStreamException

Specified by:

getElementText in interface javax.xml.stream.XMLStreamReader

Throws:

javax.xml.stream.XMLStreamException

getEncoding

public java.lang.String getEncoding()

Specified by:

getEncoding in interface javax.xml.stream.XMLStreamReader

getEventType

public int getEventType()

Specified by:

getEventType in interface javax.xml.stream.XMLStreamReader

getLocalName

public java.lang.String getLocalName()

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

Specified by:

getLocalName in interface javax.xml.stream.XMLStreamReader

getLocation

public javax.xml.stream.Location getLocation()

Specified by:

getLocation in interface javax.xml.stream.XMLStreamReader

getName

public javax.xml.namespace.QName getName()

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

Specified by:

getName in interface javax.xml.stream.XMLStreamReader

getNamespaceContext

public javax.xml.namespace.NamespaceContext getNamespaceContext()

Specified by:

getNamespaceContext in interface javax.xml.stream.XMLStreamReader

getNamespaceCount

public int getNamespaceCount()

Specified by:

getNamespaceCount in interface javax.xml.stream.XMLStreamReader

getNamespacePrefix

public java.lang.String getNamespacePrefix(int index)

Specified by:

getNamespacePrefix in interface javax.xml.stream.XMLStreamReader

getNamespaceURI

public java.lang.String getNamespaceURI(int index)

Specified by:

getNamespaceURI in interface javax.xml.stream.XMLStreamReader

getNamespaceURI

public java.lang.String getNamespaceURI()

Specified by:

getNamespaceURI in interface javax.xml.stream.XMLStreamReader

getNamespaceURI

public java.lang.String getNamespaceURI(java.lang.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 javax.xml.namespace.NamespaceContext

Specified by:

getNamespaceURI in interface javax.xml.stream.XMLStreamReader

getPrefix

public java.lang.String getPrefix(java.lang.String nsUri)

Specified by:

getPrefix in interface javax.xml.namespace.NamespaceContext

getPrefixes

public java.util.Iterator getPrefixes(java.lang.String nsUri)

Specified by:

getPrefixes in interface javax.xml.namespace.NamespaceContext

getPIData

public java.lang.String getPIData()

Specified by:

getPIData in interface javax.xml.stream.XMLStreamReader

getPITarget

public java.lang.String getPITarget()

Specified by:

getPITarget in interface javax.xml.stream.XMLStreamReader

getPrefix

public java.lang.String getPrefix()

Specified by:

getPrefix in interface javax.xml.stream.XMLStreamReader

getProperty

public java.lang.Object getProperty(java.lang.String str)
                             throws java.lang.IllegalArgumentException

Specified by:

getProperty in interface javax.xml.stream.XMLStreamReader

Throws:

java.lang.IllegalArgumentException

getText

public java.lang.String getText()

Specified by:

getText in interface javax.xml.stream.XMLStreamReader

getTextCharacters

public char[] getTextCharacters()

Specified by:

getTextCharacters in interface javax.xml.stream.XMLStreamReader

getTextCharacters

public int getTextCharacters(int sourceStart,
                             char[] target,
                             int targetStart,
                             int targetLength)
                      throws javax.xml.stream.XMLStreamException

Specified by:

getTextCharacters in interface javax.xml.stream.XMLStreamReader

Throws:

javax.xml.stream.XMLStreamException

getTextLength

public int getTextLength()

Specified by:

getTextLength in interface javax.xml.stream.XMLStreamReader

getTextStart

public int getTextStart()

Specified by:

getTextStart in interface javax.xml.stream.XMLStreamReader

getVersion

public java.lang.String getVersion()

Specified by:

getVersion in interface javax.xml.stream.XMLStreamReader

hasName

public boolean hasName()

Specified by:

hasName in interface javax.xml.stream.XMLStreamReader

hasNext

public boolean hasNext()
                throws javax.xml.stream.XMLStreamException

Specified by:

hasNext in interface javax.xml.stream.XMLStreamReader

Throws:

javax.xml.stream.XMLStreamException

hasText

public boolean hasText()

Specified by:

hasText in interface javax.xml.stream.XMLStreamReader

isAttributeSpecified

public boolean isAttributeSpecified(int param)

Specified by:

isAttributeSpecified in interface javax.xml.stream.XMLStreamReader

isCharacters

public boolean isCharacters()

Specified by:

isCharacters in interface javax.xml.stream.XMLStreamReader

isEndElement

public boolean isEndElement()

Specified by:

isEndElement in interface javax.xml.stream.XMLStreamReader

isStandalone

public boolean isStandalone()

Specified by:

isStandalone in interface javax.xml.stream.XMLStreamReader

isStartElement

public boolean isStartElement()

Specified by:

isStartElement in interface javax.xml.stream.XMLStreamReader

isWhiteSpace

public boolean isWhiteSpace()

Specified by:

isWhiteSpace in interface javax.xml.stream.XMLStreamReader

next

public int next()
         throws javax.xml.stream.XMLStreamException

Specified by:

next in interface javax.xml.stream.XMLStreamReader

Throws:

javax.xml.stream.XMLStreamException

_next

protected int _next()
             throws javax.xml.stream.XMLStreamException

Throws:

javax.xml.stream.XMLStreamException

nextTag

public int nextTag()
            throws javax.xml.stream.XMLStreamException

Specified by:

nextTag in interface javax.xml.stream.XMLStreamReader

Throws:

javax.xml.stream.XMLStreamException

require

public void require(int type,
                    java.lang.String namespaceURI,
                    java.lang.String localName)
             throws javax.xml.stream.XMLStreamException

Specified by:

require in interface javax.xml.stream.XMLStreamReader

Throws:

javax.xml.stream.XMLStreamException

standaloneSet

public boolean standaloneSet()

Specified by:

standaloneSet in interface javax.xml.stream.XMLStreamReader