org.picketlink.common.util

Class StaxParserUtil

java.lang.Object

org.picketlink.common.util.StaxParserUtil

public class StaxParserUtil
extends Object

Utility for the stax based parser

Since:

Feb 8, 2010

Author:

Anil.Saldhana@redhat.com

Field Summary

Fields

Modifier and Type	Field and Description
protected static Validator	validator

Constructor Summary

Constructors

Constructor and Description
StaxParserUtil()

Method Summary

Modifier and Type	Method and Description
static void	bypassElementBlock(XMLEventReader xmlEventReader, String tag) Bypass an entire XML element block from startElement to endElement
static String	getAttributeValue(Attribute attribute) Given an Attribute, get its trimmed value
static String	getAttributeValue(StartElement startElement, String tag) Get the Attribute value
static Element	getDOMElement(XMLEventReader xmlEventReader) Given that the XMLEventReader is in XMLStreamConstants.START_ELEMENT mode, we parse into a DOM Element
static String	getElementText(XMLEventReader xmlEventReader) Get the element text.
static String	getEndElementName(EndElement endElement) Return the name of the end element
static String	getLineColumnNumber(Location location) Given a Location, return a formatted string [lineNum,colNum]
static EndElement	getNextEndElement(XMLEventReader xmlEventReader) Get the next EndElement
static XMLEvent	getNextEvent(XMLEventReader xmlEventReader) Get the next xml event
static StartElement	getNextStartElement(XMLEventReader xmlEventReader) Get the next StartElement
static String	getStartElementName(StartElement startElement) Return the name of the start element
static XMLEventReader	getXMLEventReader(InputStream is) Get the XML event reader
static String	getXSITypeValue(StartElement startElement) Given a start element, obtain the xsi:type defined
static boolean	hasTextAhead(XMLEventReader xmlEventReader) Return whether the next event is going to be text
static boolean	matches(EndElement endElement, String tag) Match that the end element with the expected tag
static boolean	matches(StartElement startElement, String tag) Match that the start element with the expected tag
static XMLEvent	peek(XMLEventReader xmlEventReader) Peek at the next event
static EndElement	peekNextEndElement(XMLEventReader xmlEventReader) Peek the next EndElement
static StartElement	peekNextStartElement(XMLEventReader xmlEventReader) Peek the next StartElement
static String	trim(String str) Given a string, trim it
static void	validate(EndElement endElement, String tag) Validate that the end element has the expected tag
static void	validate(StartElement startElement, String tag) Validate that the start element has the expected tag

Methods inherited from class java.lang.Object

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

Field Detail

validator

protected static Validator validator

Constructor Detail

StaxParserUtil

public StaxParserUtil()

Method Detail

bypassElementBlock

public static void bypassElementBlock(XMLEventReader xmlEventReader,
                                      String tag)
                               throws ParsingException

Bypass an entire XML element block from startElement to endElement

Parameters:

xmlEventReader -

tag - Tag of the XML element that we need to bypass

Throws:

ParsingException

getAttributeValue

public static String getAttributeValue(Attribute attribute)

Given an Attribute, get its trimmed value

Parameters:

attribute -

Returns:

getAttributeValue

public static String getAttributeValue(StartElement startElement,
                                       String tag)

Get the Attribute value

Parameters:

startElement -

tag - localpart of the qname of the attribute

Returns:

getDOMElement

public static Element getDOMElement(XMLEventReader xmlEventReader)
                             throws ParsingException

Given that the XMLEventReader is in XMLStreamConstants.START_ELEMENT mode, we parse into a DOM Element

Parameters:

xmlEventReader -

Returns:

Throws:

ParsingException

getElementText

public static String getElementText(XMLEventReader xmlEventReader)
                             throws ParsingException

Get the element text.

Parameters:

xmlEventReader -

Returns:

A trimmed string value

Throws:

ParsingException

getXMLEventReader

public static XMLEventReader getXMLEventReader(InputStream is)

Get the XML event reader

Parameters:

is -

Returns:

getLineColumnNumber

public static String getLineColumnNumber(Location location)

Given a Location, return a formatted string [lineNum,colNum]

Parameters:

location -

Returns:

getNextEvent

public static XMLEvent getNextEvent(XMLEventReader xmlEventReader)
                             throws ParsingException

Get the next xml event

Parameters:

xmlEventReader -

Returns:

Throws:

ParsingException

getNextStartElement

public static StartElement getNextStartElement(XMLEventReader xmlEventReader)
                                        throws ParsingException

Get the next StartElement

Parameters:

xmlEventReader -

Returns:

Throws:

ParsingException

getNextEndElement

public static EndElement getNextEndElement(XMLEventReader xmlEventReader)
                                    throws ParsingException

Get the next EndElement

Parameters:

xmlEventReader -

Returns:

Throws:

ParsingException

getStartElementName

public static String getStartElementName(StartElement startElement)

Return the name of the start element

Parameters:

startElement -

Returns:

getEndElementName

public static String getEndElementName(EndElement endElement)

Return the name of the end element

Parameters:

endElement -

Returns:

getXSITypeValue

public static String getXSITypeValue(StartElement startElement)

Given a start element, obtain the xsi:type defined

Parameters:

startElement -

Returns:

Throws:

RuntimeException - if xsi:type is missing

hasTextAhead

public static boolean hasTextAhead(XMLEventReader xmlEventReader)
                            throws ParsingException

Return whether the next event is going to be text

Parameters:

xmlEventReader -

Returns:

Throws:

ParsingException

matches

public static boolean matches(StartElement startElement,
                              String tag)

Match that the start element with the expected tag

Parameters:

startElement -

tag -

Returns:

boolean if the tags match

matches

public static boolean matches(EndElement endElement,
                              String tag)

Match that the end element with the expected tag

Parameters:

endElement -

tag -

Returns:

boolean if the tags match

peek

public static XMLEvent peek(XMLEventReader xmlEventReader)
                     throws ParsingException

Peek at the next event

Parameters:

xmlEventReader -

Returns:

Throws:

ParsingException

peekNextStartElement

public static StartElement peekNextStartElement(XMLEventReader xmlEventReader)
                                         throws ParsingException

Peek the next StartElement

Parameters:

xmlEventReader -

Returns:

Throws:

ParsingException

peekNextEndElement

public static EndElement peekNextEndElement(XMLEventReader xmlEventReader)
                                     throws ParsingException

Peek the next EndElement

Parameters:

xmlEventReader -

Returns:

Throws:

ParsingException

trim

public static final String trim(String str)

Given a string, trim it

Parameters:

str -

Returns:

Throws:

{@code - IllegalArgumentException} if the passed str is null

validate

public static void validate(StartElement startElement,
                            String tag)

Validate that the start element has the expected tag

Parameters:

startElement -

tag -

Throws:

RuntimeException - mismatch

validate

public static void validate(EndElement endElement,
                            String tag)

Validate that the end element has the expected tag

Parameters:

endElement -

tag -

Throws:

RuntimeException - mismatch