org.apache.taglibs.standard.extra.spath

Class SPathFilter

java.lang.Object

org.xml.sax.helpers.XMLFilterImpl

org.apache.taglibs.standard.extra.spath.SPathFilter

All Implemented Interfaces:

org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler, org.xml.sax.XMLFilter, org.xml.sax.XMLReader

public class SPathFilter
extends org.xml.sax.helpers.XMLFilterImpl

Filters a SAX stream based on a single supplied SPath expression.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Stack	acceptedDepths
private static boolean	DEBUG
private int	depth
private int	excludedDepth
protected java.util.List	steps The steps in the SPath expression we use for filtering.

Constructor Summary

Constructors

Constructor and Description
SPathFilter(Path path) Constructs a new SPathFilter, given a Path.

Method Summary

Modifier and Type	Method and Description
void	characters(char[] ch, int start, int length) Filter for characters().
void	endElement(java.lang.String uri, java.lang.String localName, java.lang.String qName) Filter for endElement().
void	endPrefixMapping(java.lang.String prefix) Filter for endPrefixMapping().
void	ignorableWhitespace(char[] ch, int start, int length) Filter for ignoreableWhitespace().
private void	init() Initializes state used for filtering.
private boolean	isAccepted() Returns true if events should be passed through, false otherwise.
private boolean	isExcluded() Returns true if events should be blocked, false otherwise.
static boolean	nodeMatchesStep(Step s, java.lang.String uri, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes a)
void	processingInstruction(java.lang.String target, java.lang.String data) Filter for processingInstruction().
void	skippedEntity(java.lang.String name) Filter for skippedEntity().
void	startDocument() Resets state.
void	startElement(java.lang.String uri, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes a) Filter for startElement().
void	startPrefixMapping(java.lang.String prefix, java.lang.String uri) Filter for startPrefixMapping().

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

endDocument, error, fatalError, getContentHandler, getDTDHandler, getEntityResolver, getErrorHandler, getFeature, getParent, getProperty, notationDecl, parse, parse, resolveEntity, setContentHandler, setDocumentLocator, setDTDHandler, setEntityResolver, setErrorHandler, setFeature, setParent, setProperty, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Field Detail

steps

protected java.util.List steps

The steps in the SPath expression we use for filtering.

depth

private int depth

acceptedDepths

private java.util.Stack acceptedDepths

excludedDepth

private int excludedDepth

DEBUG

private static final boolean DEBUG

See Also:

Constant Field Values

Constructor Detail

SPathFilter

public SPathFilter(Path path)

Constructs a new SPathFilter, given a Path.

Method Detail

init

private void init()

Initializes state used for filtering.

startElement

public void startElement(java.lang.String uri,
                         java.lang.String localName,
                         java.lang.String qName,
                         org.xml.sax.Attributes a)
                  throws org.xml.sax.SAXException

Filter for startElement().

Specified by:

startElement in interface org.xml.sax.ContentHandler

Overrides:

startElement in class org.xml.sax.helpers.XMLFilterImpl

Throws:

org.xml.sax.SAXException

endElement

public void endElement(java.lang.String uri,
                       java.lang.String localName,
                       java.lang.String qName)
                throws org.xml.sax.SAXException

Filter for endElement().

Specified by:

endElement in interface org.xml.sax.ContentHandler

Overrides:

endElement in class org.xml.sax.helpers.XMLFilterImpl

Throws:

org.xml.sax.SAXException

ignorableWhitespace

public void ignorableWhitespace(char[] ch,
                                int start,
                                int length)
                         throws org.xml.sax.SAXException

Filter for ignoreableWhitespace().

Specified by:

ignorableWhitespace in interface org.xml.sax.ContentHandler

Overrides:

ignorableWhitespace in class org.xml.sax.helpers.XMLFilterImpl

Throws:

org.xml.sax.SAXException

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws org.xml.sax.SAXException

Filter for characters().

Specified by:

characters in interface org.xml.sax.ContentHandler

Overrides:

characters in class org.xml.sax.helpers.XMLFilterImpl

Throws:

org.xml.sax.SAXException

startPrefixMapping

public void startPrefixMapping(java.lang.String prefix,
                               java.lang.String uri)
                        throws org.xml.sax.SAXException

Filter for startPrefixMapping().

Specified by:

startPrefixMapping in interface org.xml.sax.ContentHandler

Overrides:

startPrefixMapping in class org.xml.sax.helpers.XMLFilterImpl

Throws:

org.xml.sax.SAXException

endPrefixMapping

public void endPrefixMapping(java.lang.String prefix)
                      throws org.xml.sax.SAXException

Filter for endPrefixMapping().

Specified by:

endPrefixMapping in interface org.xml.sax.ContentHandler

Overrides:

endPrefixMapping in class org.xml.sax.helpers.XMLFilterImpl

Throws:

org.xml.sax.SAXException

processingInstruction

public void processingInstruction(java.lang.String target,
                                  java.lang.String data)
                           throws org.xml.sax.SAXException

Filter for processingInstruction().

Specified by:

processingInstruction in interface org.xml.sax.ContentHandler

Overrides:

processingInstruction in class org.xml.sax.helpers.XMLFilterImpl

Throws:

org.xml.sax.SAXException

skippedEntity

public void skippedEntity(java.lang.String name)
                   throws org.xml.sax.SAXException

Filter for skippedEntity().

Specified by:

skippedEntity in interface org.xml.sax.ContentHandler

Overrides:

skippedEntity in class org.xml.sax.helpers.XMLFilterImpl

Throws:

org.xml.sax.SAXException

startDocument

public void startDocument()

Resets state.

Specified by:

startDocument in interface org.xml.sax.ContentHandler

Overrides:

startDocument in class org.xml.sax.helpers.XMLFilterImpl

nodeMatchesStep

public static boolean nodeMatchesStep(Step s,
                                      java.lang.String uri,
                                      java.lang.String localName,
                                      java.lang.String qName,
                                      org.xml.sax.Attributes a)

isAccepted

private boolean isAccepted()

Returns true if events should be passed through, false otherwise.

isExcluded

private boolean isExcluded()

Returns true if events should be blocked, false otherwise.