org.vfny.geoserver.requests.wfs
Class FeatureHandler

java.lang.Object
  org.xml.sax.helpers.XMLFilterImpl
      org.vfny.geoserver.requests.wfs.FeatureHandler

All Implemented Interfaces:

org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler, org.geotools.filter.FilterHandler, org.xml.sax.XMLFilter, org.xml.sax.XMLReader

public class FeatureHandler

extends org.xml.sax.helpers.XMLFilterImpl

implements org.xml.sax.ContentHandler, org.geotools.filter.FilterHandler

Uses SAX to extact a GetFeature query from and incoming GetFeature request XML stream.

Note that this Handler extension ignores Filters completely and must be chained as a parent to the PredicateFilter method in order to recognize them. If it is not chained, it will still generate valid queries, but with no filtering whatsoever.

Constructor Summary

FeatureHandler()
Empty constructor.

Method Summary

void	characters(char[] ch, int start, int length) Checks if inside parsed element and adds its contents to the appropriate variable.
void	endElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String rawName) Notes the end of the element exists query or bounding box.
void	filter(org.geotools.filter.Filter filter) Gets a filter and adds it to the appropriate query (or queries).
FeatureRequest	getRequest() Returns the GetFeature request.
void	startElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String rawName, org.xml.sax.Attributes atts) Notes the start of the element and sets type names and query attributes.

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

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.xml.sax.ContentHandler

endDocument, endPrefixMapping, ignorableWhitespace, processingInstruction, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping

Constructor Detail

FeatureHandler

public FeatureHandler()

Empty constructor.

Method Detail

getRequest

public FeatureRequest getRequest()

Returns the GetFeature request.

Returns:

The request read by this handler.

startElement

public void startElement(java.lang.String namespaceURI,
                         java.lang.String localName,
                         java.lang.String rawName,
                         org.xml.sax.Attributes atts)
                  throws org.xml.sax.SAXException

Notes the start of the element and sets type names and query attributes.

Specified by:

startElement in interface org.xml.sax.ContentHandler

Parameters:

namespaceURI - URI for namespace appended to element.

localName - Local name of element.

rawName - Raw name of element.

atts - Element attributes.

Throws:

org.xml.sax.SAXException - When the XML is not well formed.

endElement

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

Notes the end of the element exists query or bounding box.

Specified by:

endElement in interface org.xml.sax.ContentHandler

Parameters:

namespaceURI - URI for namespace appended to element.

localName - Local name of element.

rawName - Raw name of element.

Throws:

org.xml.sax.SAXException - When the XML is not well formed.

characters

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

Checks if inside parsed element and adds its contents to the appropriate variable.

Specified by:

characters in interface org.xml.sax.ContentHandler

Parameters:

ch - URI for namespace appended to element.

start - Local name of element.

length - Raw name of element.

Throws:

org.xml.sax.SAXException - When the XML is not well formed.

filter

public void filter(org.geotools.filter.Filter filter)

Gets a filter and adds it to the appropriate query (or queries).

Specified by:

filter in interface org.geotools.filter.FilterHandler

Parameters:

filter - (OGC WFS) Filter from (SAX) filter.