Package org.h2gis.functions.io.osm

Class OSMPreParser

java.lang.Object

org.xml.sax.helpers.DefaultHandler

org.h2gis.functions.io.osm.OSMPreParser

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

public class OSMPreParser
extends DefaultHandler

OSMPreParser class just reads the document. It says what type of elements (nodes, ways and relation) the document contains. It also counts each type of elements.

Author:

Erwan Bocher

Constructor Summary

Constructors

Constructor	Description
OSMPreParser()	Initializing of the pre-parser.

Method Summary

Modifier and Type	Method	Description
int	getTotalNode()
int	getTotalRelation()
int	getTotalWay()
String	getVersion()
boolean	read(File inputFile)	Reads the document and pre-parses it.
void	startElement(String uri, String localName, String qName, Attributes attributes)	Fires whenever an XML start markup is encountered.

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

characters, endDocument, endElement, 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

Methods inherited from interface org.xml.sax.ContentHandler

declaration

Constructor Details

OSMPreParser

public OSMPreParser()

Initializing of the pre-parser. All values are set to zero.

Method Details

read

public boolean read(File inputFile)
             throws SAXException,
IOException

Reads the document and pre-parses it. The other method is called automatically when a start markup is found.

Parameters:

inputFile - the file to read

Returns:

a boolean if the parser ends successfully or not

Throws:

SAXException

IOException

startElement

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

Fires whenever an XML start markup is encountered. It indicates which version of osm file is to be parsed.

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Parameters:

uri - URI of the local element

localName - Name of the local element (without prefix)

qName - qName of the local element (with prefix)

attributes - Attributes of the local element (contained in the markup)

Throws:

SAXException - Any SAX exception, possibly wrapping another exception

getVersion

public String getVersion()

getTotalNode

public int getTotalNode()

getTotalWay

public int getTotalWay()

getTotalRelation

public int getTotalRelation()