Package org.graffiti.plugins.ios.importers.graphml.parser

Class GraphMLFilter

java.lang.Object

org.xml.sax.helpers.XMLFilterImpl

org.graffiti.plugins.ios.importers.graphml.parser.GraphMLFilter

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler, XMLFilter, XMLReader

public class GraphMLFilter
extends XMLFilterImpl

Class GraphMLFilter processes the SAX events generated by the parser and builds the graph according to the events. In that sense, this class is the heart of the graphML reading library.

Author:

ruediger

Constructor Summary

Constructors

Constructor	Description
GraphMLFilter(XMLReader parent, Graph graph)	Constructs a new GraphMLFilter.

Method Summary

Modifier and Type	Method	Description
void	characters(char[] ch, int start, int length)	Filter a character data event.
void	endElement(String uri, String localName, String qName)	Filter an end element event.
void	startElement(String uri, String localName, String qName, Attributes atts)	Filter a start element event.

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

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

Methods inherited from interface org.xml.sax.ContentHandler

declaration

Constructor Details

GraphMLFilter

public GraphMLFilter(XMLReader parent,
Graph graph)

Constructs a new GraphMLFilter.

Parameters:

parent - the parent XMLReader.

graph - the Graph to which to add the read in data.

Method Details

characters

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

Filter a character data event. This method assumes that the character data is not split into multiple events. Depending on whether the event belongs to a default attribute value declaration or a usual attribute value declaration the corrsponding attribute value will be set.

Specified by:

characters in interface ContentHandler

Overrides:

characters in class XMLFilterImpl

Parameters:

ch - an array of characters.

start - the starting position in the array.

length - the number of characters to use from the array.

endElement

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

Filter an end element event. Depending on the kind of element certain states of the filter will be reset.

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class XMLFilterImpl

Parameters:

uri - the element's Namespace URI, or the empty string.

localName - the element's local name, or the empty string.

qName - the element's qualified (prefixed) name, or the empty string.

startElement

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

Filter a start element event. Depending on the kind of attribute either an element will be added to the graph or the filter is prepared to modify the graph appropriately depending on the next coming events.

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class XMLFilterImpl

Parameters:

uri - the element's Namespace URI, or the empty string.

localName - the element's local name, or the empty string.

qName - the element's qualified (prefixed) name, or the empty string.

atts - the element's attributes.

Throws:

SAXException - the client may throw an exception during processing.