org.codice.ddf.transformer.xml.streaming.impl

Class GmlHandler

java.lang.Object

org.codice.ddf.transformer.xml.streaming.AbstractSaxEventHandler

org.codice.ddf.transformer.xml.streaming.impl.GmlHandler

All Implemented Interfaces:

SaxEventHandler, ContentHandler

public class GmlHandler
extends AbstractSaxEventHandler

A sax event handler to handle GML sax events and stores the data as a WKT. Delegates GML events to GMLHandler. Uses WKTWriter to write the Geometries to WKT. Note: ONLY CAN PARSE GML2 points. Will throw hard-to-debug Null Pointer Exceptions if used with GML3 or other GML2 geometries.

Constructor Summary

Constructors

Constructor and Description
GmlHandler(com.vividsolutions.jts.io.gml2.GMLHandler gmlHandler, Gml3ToWkt gml3Converter)

Method Summary

Modifier and Type	Method and Description
void	characters(char[] ch, int start, int length) Takes in a sax event from SaxEventHandlerDelegate, and if it is a gml:Point or a sub-element of a gml:Point, it will * hand the event off to the GML handler for further parsing.
void	endElement(String namespaceURI, String localName, String qName) Takes in a sax event from SaxEventHandlerDelegate, and if it is a gml:Point or a sub-element of a gml:Point, it will * hand the event off to the GML handler for further parsing.
List<Attribute>	getAttributes()
Set<AttributeDescriptor>	getSupportedAttributeDescriptors() Get all the possible attribute types that can be returned by this factory's handler
void	startElement(String uri, String localName, String qName, Attributes attributes) Takes in a sax event from SaxEventHandlerDelegate, and if it is a gml:Point or a sub-element of a gml:Point, it will hand the event off to the GML handler for further parsing.
void	startPrefixMapping(String prefix, String uri)

Methods inherited from class org.codice.ddf.transformer.xml.streaming.AbstractSaxEventHandler

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

Methods inherited from class java.lang.Object

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

Constructor Detail

GmlHandler

public GmlHandler(com.vividsolutions.jts.io.gml2.GMLHandler gmlHandler,
                  Gml3ToWkt gml3Converter)

Method Detail

getAttributes

public List<Attribute> getAttributes()

Returns:

list of Attribute (should be all )

getSupportedAttributeDescriptors

public Set<AttributeDescriptor> getSupportedAttributeDescriptors()

Description copied from interface: SaxEventHandler

Get all the possible attribute types that can be returned by this factory's handler

Returns:

a set of attribute descriptors that can be returned by this handler

startPrefixMapping

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

Specified by:

startPrefixMapping in interface ContentHandler

Overrides:

startPrefixMapping in class AbstractSaxEventHandler

Throws:

SAXException

startElement

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

Takes in a sax event from SaxEventHandlerDelegate, and if it is a gml:Point or a sub-element of a gml:Point, it will hand the event off to the GML handler for further parsing.

Parameters:

uri - the URI that is passed in by SaxEventHandlerDelegate

localName - the localName that is passed in by SaxEventHandlerDelegate

qName - the qName that is passed in by SaxEventHandlerDelegate

attributes - the attributes that are passed in by SaxEventHandlerDelegate

endElement

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

Takes in a sax event from SaxEventHandlerDelegate, and if it is a gml:Point or a sub-element of a gml:Point, it will * hand the event off to the GML handler for further parsing. If it is a gml:Point, the point is stored as a WKT in the attributes list

Parameters:

namespaceURI - the namespaceURI that is passed in by SaxEventHandlerDelegate

localName - the localName that is passed in by SaxEventHandlerDelegate

qName - the qName that is passed in by SaxEventHandlerDelegate

characters

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

Takes in a sax event from SaxEventHandlerDelegate, and if it is a gml:Point or a sub-element of a gml:Point, it will * hand the event off to the GML handler for further parsing.

Parameters:

ch - the ch that is passed in by SaxEventHandlerDelegate

start - the start that is passed in by SaxEventHandlerDelegate

length - the length that is passed in by SaxEventHandlerDelegate