Class XMLHandler

java.lang.Object

org.xml.sax.helpers.DefaultHandler

XMLHandler

All Implemented Interfaces:

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

public class XMLHandler
extends org.xml.sax.helpers.DefaultHandler

This class handles the XML parsing in what I think is the most efficient way. There is only one pass of the file, and there are no loops. By creating half- empty room objects and then populating them as we go, there is no need to impliment logic for directions, it's all implicitly handled and the data structure that contains everything is built from the ground up.

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.String	current_room
private PC	player
private java.util.HashMap<java.lang.String,Room>	rooms

Constructor Summary

Constructors

Constructor and Description
XMLHandler()

Method Summary

Methods

Modifier and Type	Method and Description
PC	getPlayer()
java.util.HashMap<java.lang.String,Room>	getRooms()
private void	handleDirection(java.lang.String room, int direction) Refactor of previously messy code to handle direction attributes for rooms
void	startElement(java.lang.String uri, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes attributes)

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

Field Detail

rooms

private java.util.HashMap<java.lang.String,Room> rooms

current_room

private java.lang.String current_room

player

private PC player

Constructor Detail

XMLHandler

public XMLHandler()

Method Detail

getRooms

public java.util.HashMap<java.lang.String,Room> getRooms()

getPlayer

public PC getPlayer()

handleDirection

private void handleDirection(java.lang.String room,
                   int direction)

Refactor of previously messy code to handle direction attributes for rooms

Parameters:

Actual - name of the room

Number - representation of the direction

startElement

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

Specified by:

startElement in interface org.xml.sax.ContentHandler

Overrides:

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