org.qedeq.kernel.xml.tracker
Class XPathLocationParser

java.lang.Object
  org.qedeq.kernel.xml.tracker.XPathLocationParser

All Implemented Interfaces:

ContentHandler

public class XPathLocationParser

extends Object

implements ContentHandler

Parser for XML files. Search simple XPath within an XML file. Usage:

      final XPathLocationParser parser = new XPathLocationParser(xpath);
      parser.parse(xmlFile, original);
      return parser.getFind();

 

This class uses features specific for Xerces.

Version:

$Revision: 1.22 $

Constructor Summary

XPathLocationParser(String xpath)
Constructor.

Method Summary

void	characters(char[] ch, int start, int length)
void	endDocument()
void	endElement(String namespaceURI, String localName, String qName)
void	endPrefixMapping(String prefix)
SimpleXPath	getFind() Get searched XPath.
static SimpleXPath	getXPathLocation(File xmlFile, SimpleXPath xpath, URL original) Search simple XPath within an XML file.
static SimpleXPath	getXPathLocation(File xmlFile, String xpath, URL original) Search simple XPath within an XML file.
void	ignorableWhitespace(char[] ch, int start, int length)
void	parse(File file, URL original) Parses XML file.
void	parse(String fileName, URL original) Parses XML file.
void	processingInstruction(String target, String data)
void	setDocumentLocator(Locator locator) Receive a Locator object for document events.
void	skippedEntity(String name)
void	startDocument()
void	startElement(String namespaceURI, String localName, String qName, Attributes atts)
void	startPrefixMapping(String prefix, String uri)

Methods inherited from class java.lang.Object

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

Constructor Detail

XPathLocationParser

public XPathLocationParser(String xpath)
                    throws ParserConfigurationException,
                           SAXException

Constructor.

Parameters:

xpath - XML file path.

Throws:

ParserConfigurationException - Severe parser configuration problem.

SAXException

Method Detail

getXPathLocation

public static final SimpleXPath getXPathLocation(File xmlFile,
                                                 String xpath,
                                                 URL original)
                                          throws ParserConfigurationException,
                                                 SAXException,
                                                 IOException

Search simple XPath within an XML file.

Parameters:

xmlFile - Search this file.

xpath - Search for this simple XPath.

original - Original file location.

Returns:

Source position information.

Throws:

ParserConfigurationException

SAXException

IOException

getXPathLocation

public static final SimpleXPath getXPathLocation(File xmlFile,
                                                 SimpleXPath xpath,
                                                 URL original)
                                          throws ParserConfigurationException,
                                                 SAXException,
                                                 IOException

Search simple XPath within an XML file.

Parameters:

xmlFile - Search this file.

xpath - Search for this simple XPath.

original - Original file location.

Returns:

Source position information.

Throws:

ParserConfigurationException

SAXException

IOException

parse

public final void parse(String fileName,
                        URL original)
                 throws SAXException,
                        IOException

Parses XML file.

Parameters:

fileName - Parse this input.

original - Original file location.

Throws:

SAXException - Syntactical or semantical problem occurred.

IOException - Technical problem occurred.

parse

public final void parse(File file,
                        URL original)
                 throws SAXException,
                        IOException

Parses XML file.

Parameters:

file - Parse this input.

original - Original file location.

Throws:

SAXException - Syntactical or semantical problem occurred.

IOException - Technical problem occurred.

endDocument

public void endDocument()
                 throws SAXException

Specified by:

endDocument in interface ContentHandler

Throws:

SAXException

startDocument

public void startDocument()
                   throws SAXException

Specified by:

startDocument in interface ContentHandler

Throws:

SAXException

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws SAXException

Specified by:

characters in interface ContentHandler

Throws:

SAXException

ignorableWhitespace

public void ignorableWhitespace(char[] ch,
                                int start,
                                int length)
                         throws SAXException

Specified by:

ignorableWhitespace in interface ContentHandler

Throws:

SAXException

endPrefixMapping

public void endPrefixMapping(String prefix)
                      throws SAXException

Specified by:

endPrefixMapping in interface ContentHandler

Throws:

SAXException

skippedEntity

public void skippedEntity(String name)
                   throws SAXException

Specified by:

skippedEntity in interface ContentHandler

Throws:

SAXException

setDocumentLocator

public final void setDocumentLocator(Locator locator)

Receive a Locator object for document events. Store the locator for use with other document events.

Specified by:

setDocumentLocator in interface ContentHandler

Parameters:

locator - A locator for all SAX document events.

See Also:

ContentHandler.setDocumentLocator(org.xml.sax.Locator), Locator

processingInstruction

public void processingInstruction(String target,
                                  String data)
                           throws SAXException

Specified by:

processingInstruction in interface ContentHandler

Throws:

SAXException

startPrefixMapping

public void startPrefixMapping(String prefix,
                               String uri)
                        throws SAXException

Specified by:

startPrefixMapping in interface ContentHandler

Throws:

SAXException

startElement

public void startElement(String namespaceURI,
                         String localName,
                         String qName,
                         Attributes atts)
                  throws SAXException

Specified by:

startElement in interface ContentHandler

Throws:

SAXException

endElement

public void endElement(String namespaceURI,
                       String localName,
                       String qName)
                throws SAXException

Specified by:

endElement in interface ContentHandler

Throws:

SAXException

getFind

public SimpleXPath getFind()

Get searched XPath. Hopefully the start and end location are set.

Returns:

Searched XPath.