Package org.apache.axiom.util.stax.xop

Class XOPEncodingStreamReader

java.lang.Object

org.apache.axiom.util.stax.xop.XOPEncodingStreamWrapper

org.apache.axiom.util.stax.xop.XOPEncodingStreamReader

All Implemented Interfaces:

XMLStreamConstants, XMLStreamReader, MimePartProvider

public class XOPEncodingStreamReader
extends XOPEncodingStreamWrapper
implements XMLStreamReader

XMLStreamReader wrapper that encodes XOP. It assumes that the underlying reader implements the extension defined by DataHandlerReader so that it can identify the information items to optimize (by looking for XMLStreamConstants.CHARACTERS events for which DataHandlerReader.isBinary() returns true). The DataHandler objects for the parts referenced by xop:Include element information items produced by an instance of this class can be retrieved using the XOPEncodingStreamWrapper.getDataHandler(String) method.

Note that the primary purpose of this class is not to serialize an XML infoset to an XOP package (this is better done using XOPEncodingStreamWriter), but rather to optimize interaction (by exchanging DataHandler objects instead of base64 encoded representations) with databinding frameworks that understand XOP, but that are not aware of the DataHandlerReader extension.

This class defers loading of DataHandler objects until XOPEncodingStreamWrapper.getDataHandler(String) is called, except if this is not supported by the underlying stream.

Field Summary

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
XOPEncodingStreamReader(XMLStreamReader parent, ContentIDGenerator contentIDGenerator, OptimizationPolicy optimizationPolicy)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	close()
int	getAttributeCount()
String	getAttributeLocalName(int index)
QName	getAttributeName(int index)
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()
Location	getLocation()
QName	getName()
NamespaceContext	getNamespaceContext()
int	getNamespaceCount()
String	getNamespacePrefix(int index)
String	getNamespaceURI()
String	getNamespaceURI(int index)
String	getNamespaceURI(String prefix)
String	getPIData()
String	getPITarget()
String	getPrefix()
Object	getProperty(String name)
String	getText()
char[]	getTextCharacters()
int	getTextCharacters(int sourceStart, char[] target, int targetStart, int length)
int	getTextLength()
int	getTextStart()
String	getVersion()
boolean	hasName()
boolean	hasNext()
boolean	hasText()
boolean	isAttributeSpecified(int index)
boolean	isCharacters()
boolean	isEndElement()
boolean	isStandalone()
boolean	isStartElement()
boolean	isWhiteSpace()
int	next()
int	nextTag()
void	require(int type, String namespaceURI, String localName)
boolean	standaloneSet()

Methods inherited from class org.apache.axiom.util.stax.xop.XOPEncodingStreamWrapper

getContentIDs, getDataHandler, processDataHandler, processDataHandler

Methods inherited from class java.lang.Object

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

Constructor Detail

XOPEncodingStreamReader

public XOPEncodingStreamReader(XMLStreamReader parent,
                               ContentIDGenerator contentIDGenerator,
                               OptimizationPolicy optimizationPolicy)

Constructor.

Parameters:

parent - The XML stream to encode. The reader must implement the extension defined by DataHandlerReader.

contentIDGenerator - used to generate content IDs for the binary content exposed as xop:Include element information items

optimizationPolicy - the policy to apply to decide which binary content to optimize

Throws:

IllegalArgumentException - if the provided XMLStreamReader doesn't implement the extension defined by DataHandlerReader

Method Detail

next

public int next()
         throws XMLStreamException

Specified by:

next in interface XMLStreamReader

Throws:

XMLStreamException

hasNext

public boolean hasNext()
                throws XMLStreamException

Specified by:

hasNext in interface XMLStreamReader

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

getLocation

public Location getLocation()

Specified by:

getLocation in interface XMLStreamReader

close

public void close()
           throws XMLStreamException

Specified by:

close in interface XMLStreamReader

Throws:

XMLStreamException

getProperty

public Object getProperty(String name)
                   throws IllegalArgumentException

Specified by:

getProperty in interface XMLStreamReader

Throws:

IllegalArgumentException

getEncoding

public String getEncoding()

Specified by:

getEncoding in interface XMLStreamReader

getCharacterEncodingScheme

public String getCharacterEncodingScheme()

Specified by:

getCharacterEncodingScheme in interface XMLStreamReader

getVersion

public String getVersion()

Specified by:

getVersion in interface XMLStreamReader

isStandalone

public boolean isStandalone()

Specified by:

isStandalone in interface XMLStreamReader

standaloneSet

public boolean standaloneSet()

Specified by:

standaloneSet in interface XMLStreamReader

getPIData

public String getPIData()

Specified by:

getPIData in interface XMLStreamReader

getPITarget

public String getPITarget()

Specified by:

getPITarget in interface XMLStreamReader

getAttributeCount

public int getAttributeCount()

Specified by:

getAttributeCount in interface XMLStreamReader

getAttributeLocalName

public String getAttributeLocalName(int index)

Specified by:

getAttributeLocalName in interface XMLStreamReader

getAttributeName

public QName getAttributeName(int index)

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

isAttributeSpecified

public boolean isAttributeSpecified(int index)

Specified by:

isAttributeSpecified in interface XMLStreamReader

getAttributeValue

public String getAttributeValue(String namespaceURI,
                                String localName)

Specified by:

getAttributeValue in interface XMLStreamReader

getElementText

public String getElementText()
                      throws XMLStreamException

Specified by:

getElementText in interface XMLStreamReader

Throws:

XMLStreamException

getEventType

public int getEventType()

Specified by:

getEventType in interface XMLStreamReader

getNamespaceURI

public String getNamespaceURI()

Specified by:

getNamespaceURI in interface XMLStreamReader

getLocalName

public String getLocalName()

Specified by:

getLocalName in interface XMLStreamReader

getPrefix

public String getPrefix()

Specified by:

getPrefix in interface XMLStreamReader

getName

public QName getName()

Specified by:

getName in interface XMLStreamReader

getNamespaceContext

public NamespaceContext getNamespaceContext()

Specified by:

getNamespaceContext in interface XMLStreamReader

getNamespaceURI

public String getNamespaceURI(String prefix)

Specified by:

getNamespaceURI 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

getText

public String getText()

Specified by:

getText in interface XMLStreamReader

getTextStart

public int getTextStart()

Specified by:

getTextStart in interface XMLStreamReader

getTextLength

public int getTextLength()

Specified by:

getTextLength in interface XMLStreamReader

getTextCharacters

public char[] getTextCharacters()

Specified by:

getTextCharacters in interface XMLStreamReader

getTextCharacters

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

Specified by:

getTextCharacters in interface XMLStreamReader

Throws:

XMLStreamException

hasName

public boolean hasName()

Specified by:

hasName in interface XMLStreamReader

hasText

public boolean hasText()

Specified by:

hasText in interface XMLStreamReader

isCharacters

public boolean isCharacters()

Specified by:

isCharacters in interface XMLStreamReader

isWhiteSpace

public boolean isWhiteSpace()

Specified by:

isWhiteSpace in interface XMLStreamReader

isStartElement

public boolean isStartElement()

Specified by:

isStartElement in interface XMLStreamReader

isEndElement

public boolean isEndElement()

Specified by:

isEndElement in interface XMLStreamReader