org.apache.synapse.commons.staxon.core.base

Class AbstractXMLStreamReader<T>

java.lang.Object

org.apache.synapse.commons.staxon.core.base.AbstractXMLStreamReader<T>

All Implemented Interfaces:

XMLStreamConstants, XMLStreamReader

Direct Known Subclasses:

JsonXMLStreamReader

public abstract class AbstractXMLStreamReader<T>
extends Object
implements XMLStreamReader

Abstract XML stream reader.

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 and Description
AbstractXMLStreamReader(T rootInfo) Create new reader instance.
AbstractXMLStreamReader(T rootInfo, Location locationProvider) Create new reader instance.

Method Summary

Modifier and Type	Method and Description
void	close()
protected abstract boolean	consume() Main method to be implemented by subclasses.
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()
protected Object	getEventData()
protected String	getEventName()
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)
protected XMLStreamReaderScope<T>	getScope()
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()
protected void	initialize() Consume initial event.
boolean	isAttributeSpecified(int index)
boolean	isCharacters()
boolean	isEndElement()
boolean	isStandalone()
protected boolean	isStartDocumentRead()
boolean	isStartElement()
boolean	isWhiteSpace()
int	next()
int	nextTag()
protected void	readAttr(String prefix, String localName, String namespaceURI, String value) Read attribute.
protected void	readData(String text, Object data, int type) Read characters/comment/dtd/entity data.
protected void	readEndDocument() Read end document.
protected void	readEndElementTag() Read end element.
protected void	readNsDecl(String prefix, String namespaceURI) Read namespace declaration.
protected void	readPI(String target, String data) Read processing instruction.
protected void	readStartDocument(String version, String encodingScheme, Boolean standalone) Read start document
protected void	readStartElementTag(String prefix, String localName, String namespaceURI, T scopeInfo) Read start element.
void	require(int eventType, String namespaceURI, String localName)
boolean	standaloneSet()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractXMLStreamReader

public AbstractXMLStreamReader(T rootInfo)

Create new reader instance.

Parameters:

rootInfo - root scope information

AbstractXMLStreamReader

public AbstractXMLStreamReader(T rootInfo,
                               Location locationProvider)

Create new reader instance.

Parameters:

rootInfo - root scope information

Method Detail

getScope

protected XMLStreamReaderScope<T> getScope()

Returns:

current scope

isStartDocumentRead

protected boolean isStartDocumentRead()

Returns:

true if START_DOCUMENT event has been read

initialize

protected void initialize()
                   throws XMLStreamException

Consume initial event. This method must be called by subclasses prior to any use of an instance (typically in constructor).

Throws:

XMLStreamException

consume

protected abstract boolean consume()
                            throws XMLStreamException,
                                   IOException

Main method to be implemented by subclasses. This method is called by the reader when the event queue runs dry. Consume some events and delegate to the various readXXX() methods. When encountering an element start event, all attributes and namespace delarations must be consumed too, otherwise these won't be available during start element.

Returns:

true if there's more to read

Throws:

XMLStreamException

IOException

readStartDocument

protected void readStartDocument(String version,
                                 String encodingScheme,
                                 Boolean standalone)
                          throws XMLStreamException

Read start document

Parameters:

version - XML version

encodingScheme - encoding scheme (may be null)

standalone - standalone flag (may be null)

Throws:

XMLStreamException

readStartElementTag

protected void readStartElementTag(String prefix,
                                   String localName,
                                   String namespaceURI,
                                   T scopeInfo)
                            throws XMLStreamException

Read start element. A new scope is created and made the current scope. The provided scopeInfo is stored in the new scope and will be available via getScope().getInfo().

Parameters:

prefix - element prefix (use null if unknown)

localName - local name

namespaceURI - (use null if unknown)

scopeInfo - new scope info

Throws:

XMLStreamException

readAttr

protected void readAttr(String prefix,
                        String localName,
                        String namespaceURI,
                        String value)
                 throws XMLStreamException

Read attribute.

Parameters:

prefix - attribute prefix (use null if unknown)

localName - local name

namespaceURI - (use null if unknown)

value - attribute value

Throws:

XMLStreamException

readNsDecl

protected void readNsDecl(String prefix,
                          String namespaceURI)
                   throws XMLStreamException

Read namespace declaration.

Parameters:

prefix - namespace prefix (must not be null)

namespaceURI - namespace URI (must not be null)

Throws:

XMLStreamException

readData

protected void readData(String text,
                        Object data,
                        int type)
                 throws XMLStreamException

Read characters/comment/dtd/entity data.

Parameters:

text - text

data - additional data exposed by getEventData() (e.g. type conversion)

type - one of CHARACTERS, COMMENT, CDATA, DTD, ENTITY_REFERENCE, SPACE

Throws:

XMLStreamException

readPI

protected void readPI(String target,
                      String data)
               throws XMLStreamException

Read processing instruction.

Parameters:

target - PI target

data - PI data (may be null)

Throws:

XMLStreamException

readEndElementTag

protected void readEndElementTag()
                          throws XMLStreamException

Read end element. This will pop the current scope and make its parent the new current scope.

Throws:

XMLStreamException

readEndDocument

protected void readEndDocument()
                        throws XMLStreamException

Read end document.

Throws:

XMLStreamException

require

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

Specified by:

require in interface XMLStreamReader

Throws:

XMLStreamException

getElementText

public String getElementText()
                      throws XMLStreamException

Specified by:

getElementText in interface XMLStreamReader

Throws:

XMLStreamException

hasNext

public boolean hasNext()
                throws XMLStreamException

Specified by:

hasNext in interface XMLStreamReader

Throws:

XMLStreamException

next

public int next()
         throws XMLStreamException

Specified by:

next in interface XMLStreamReader

Throws:

XMLStreamException

nextTag

public int nextTag()
            throws XMLStreamException

Specified by:

nextTag in interface XMLStreamReader

Throws:

XMLStreamException

close

public void close()
           throws XMLStreamException

Specified by:

close in interface XMLStreamReader

Throws:

XMLStreamException

isStartElement

public boolean isStartElement()

Specified by:

isStartElement in interface XMLStreamReader

isEndElement

public boolean isEndElement()

Specified by:

isEndElement in interface XMLStreamReader

isCharacters

public boolean isCharacters()

Specified by:

isCharacters in interface XMLStreamReader

isWhiteSpace

public boolean isWhiteSpace()

Specified by:

isWhiteSpace in interface XMLStreamReader

getAttributeCount

public int getAttributeCount()

Specified by:

getAttributeCount in interface XMLStreamReader

getAttributeName

public QName getAttributeName(int index)

Specified by:

getAttributeName in interface XMLStreamReader

getAttributeLocalName

public String getAttributeLocalName(int index)

Specified by:

getAttributeLocalName in interface XMLStreamReader

getAttributeValue

public String getAttributeValue(int index)

Specified by:

getAttributeValue in interface XMLStreamReader

getAttributePrefix

public String getAttributePrefix(int index)

Specified by:

getAttributePrefix in interface XMLStreamReader

getAttributeNamespace

public String getAttributeNamespace(int index)

Specified by:

getAttributeNamespace in interface XMLStreamReader

getAttributeType

public String getAttributeType(int index)

Specified by:

getAttributeType 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

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

getNamespaceContext

public NamespaceContext getNamespaceContext()

Specified by:

getNamespaceContext in interface XMLStreamReader

getEventType

public int getEventType()

Specified by:

getEventType in interface XMLStreamReader

getEventName

protected String getEventName()

getEventData

protected final Object getEventData()

Returns:

raw event data

getLocation

public Location getLocation()

Specified by:

getLocation in interface XMLStreamReader

hasText

public boolean hasText()

Specified by:

hasText in interface XMLStreamReader

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 length)
                      throws XMLStreamException

Specified by:

getTextCharacters in interface XMLStreamReader

Throws:

XMLStreamException

getTextStart

public int getTextStart()

Specified by:

getTextStart in interface XMLStreamReader

getTextLength

public int getTextLength()

Specified by:

getTextLength in interface XMLStreamReader

hasName

public boolean hasName()

Specified by:

hasName in interface XMLStreamReader

getName

public QName getName()

Specified by:

getName in interface XMLStreamReader

getLocalName

public String getLocalName()

Specified by:

getLocalName in interface XMLStreamReader

getNamespaceURI

public String getNamespaceURI()

Specified by:

getNamespaceURI in interface XMLStreamReader

getPrefix

public String getPrefix()

Specified by:

getPrefix in interface XMLStreamReader

getVersion

public String getVersion()

Specified by:

getVersion in interface XMLStreamReader

getEncoding

public String getEncoding()

Specified by:

getEncoding in interface XMLStreamReader

isStandalone

public boolean isStandalone()

Specified by:

isStandalone in interface XMLStreamReader

standaloneSet

public boolean standaloneSet()

Specified by:

standaloneSet in interface XMLStreamReader

getCharacterEncodingScheme

public String getCharacterEncodingScheme()

Specified by:

getCharacterEncodingScheme in interface XMLStreamReader

getPITarget

public String getPITarget()

Specified by:

getPITarget in interface XMLStreamReader

getPIData

public String getPIData()

Specified by:

getPIData in interface XMLStreamReader

getProperty

public Object getProperty(String name)
                   throws IllegalArgumentException

Specified by:

getProperty in interface XMLStreamReader

Throws:

IllegalArgumentException

toString

public String toString()

Overrides:

toString in class Object