org.jboss.seam.faces.projectstage
Class WebXmlContextParameterParser

java.lang.Object
  org.xml.sax.helpers.DefaultHandler
      org.jboss.seam.faces.projectstage.WebXmlContextParameterParser

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

public class WebXmlContextParameterParser
extends DefaultHandler

Simple SAX parser for reading "context-param" entries from web.xml

Author:

Christian Kaltepoth

Constructor Summary

WebXmlContextParameterParser()

Method Summary

void	characters(char[] ch, int start, int length)
protected boolean	elements(String... name) Checks whether the element stack currently contains exactly the elements supplied by the caller.
void	endElement(String uri, String localName, String qName)
String	getContextParameter(String name) Returns the value of the supplied context parameter parsed from the web.xml file.
void	parse(InputStream stream) Parses the supplied web.xml InputStream.
void	startElement(String uri, String localName, String qName, Attributes attributes)

Methods inherited from class org.xml.sax.helpers.DefaultHandler

endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Constructor Detail

WebXmlContextParameterParser

public WebXmlContextParameterParser()

Method Detail

parse

public final void parse(InputStream stream)
                 throws IOException

Parses the supplied web.xml InputStream.

Parameters:

stream - The stream to parse

Throws:

IOException - for any errors during the parsing process

getContextParameter

public String getContextParameter(String name)

Returns the value of the supplied context parameter parsed from the web.xml file. Returns null if the parser found no value for this parameter.

Parameters:

name - The name of the context parameter

Returns:

the value or null

startElement

public void startElement(String uri,
                         String localName,
                         String qName,
                         Attributes attributes)
                  throws SAXException

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Throws:

SAXException

characters

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

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

Throws:

SAXException

endElement

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

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

Throws:

SAXException

elements

protected boolean elements(String... name)

Checks whether the element stack currently contains exactly the elements supplied by the caller. This method can be used to find the current position in the document. The first argument is always the root element of the document, the second is a child of the root element, and so on. The method uses the local names of the elements only. Namespaces are ignored.

Parameters:

name - The names of the parent elements

Returns:

true if the parent element stack contains exactly these elements