sabdakosh
Class Xdochandler

java.lang.Object
  org.xml.sax.helpers.DefaultHandler
      sabdakosh.Xdochandler

All Implemented Interfaces:

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

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

The Class Xdochandler is the class that represent the logic of the application. The actual parsing of the xml file is performed in this class.

Field Summary

private java.lang.String	bool The bool is the string variable that checks if the word entered by the user is present in the xml file.
private java.io.CharArrayWriter	contents The contents is the object for CharArrayWriter class.
java.lang.String	eg1 eg1 variable represents the value of first example for a given word present in xml file.
java.lang.String	eg2 eg2 variable represents the value of second example for a given word present in xml file.
java.lang.String	eg3 eg3 variable represents the value of third example for a given word present in xml file.
private java.lang.String	input The input variable represents the value provided by the user.
java.lang.String	mean1 mean1 variable represents the first english meaning of a given word present in xml file.
java.lang.String	mean2 mean2 variable represents the second english meaning of a given word present in xml file.
java.lang.String	mean3 mean3 variable represents the third english meaning of a given word present in xml file.
java.lang.String	nepali_meaning The nepali_meaning is the variable that represents the value of nepali meaning in nepali language.
java.lang.String	total_meaning The total_meaning is the variable that represents the value of english meaining and it's associated forms and examples.
private java.lang.String	xinput The xinput is the variable that represents the element value returned by the parser.

Constructor Summary

Xdochandler(java.lang.String input)
Instantiates a new xdochandler.

Method Summary

void	characters(char[] ch, int start, int length) The characters is a callback method used by the SAX parser to return the characters found in the xml file.
void	endElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String qName) endElement is also a callback method used by SAX parser that returns the ending element present in xml file.
void	startElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String qName, org.xml.sax.Attributes attr) startElement is the callback method used by SAX parser that returns all the starting elements present in xml file.

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

endDocument, 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

input

private java.lang.String input

The input variable represents the value provided by the user. It is the value passed from Dictionary class.

xinput

private java.lang.String xinput

The xinput is the variable that represents the element value returned by the parser. It is the localname of the element in the xml file.

mean1

public java.lang.String mean1

mean1 variable represents the first english meaning of a given word present in xml file.

eg1

public java.lang.String eg1

eg1 variable represents the value of first example for a given word present in xml file.

mean2

public java.lang.String mean2

mean2 variable represents the second english meaning of a given word present in xml file.

eg2

public java.lang.String eg2

eg2 variable represents the value of second example for a given word present in xml file.

mean3

public java.lang.String mean3

mean3 variable represents the third english meaning of a given word present in xml file.

eg3

public java.lang.String eg3

eg3 variable represents the value of third example for a given word present in xml file.

nepali_meaning

public java.lang.String nepali_meaning

The nepali_meaning is the variable that represents the value of nepali meaning in nepali language.

total_meaning

public java.lang.String total_meaning

The total_meaning is the variable that represents the value of english meaining and it's associated forms and examples.

bool

private java.lang.String bool

The bool is the string variable that checks if the word entered by the user is present in the xml file. If the word exists in the xml file then true is returned else false is returned.

contents

private java.io.CharArrayWriter contents

The contents is the object for CharArrayWriter class. It stores the values of english meaning, examples, nepali meaning returned after parsing the xml file. This stored value is then passed to the front end.

Constructor Detail

Xdochandler

public Xdochandler(java.lang.String input)

Instantiates a new xdochandler.

Parameters:

input - the input variable represents the value provided by the user. It is the value passed from Dictionary class.

Method Detail

startElement

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

startElement is the callback method used by SAX parser that returns all the starting elements present in xml file. It returns both the local name, qualified name of the starting element and it's attributes. However, for our application we use local name only and the attributes reprsent the nepali meaning for the given english word. This method retrieves the value of this attribute.

Specified by:

startElement in interface org.xml.sax.ContentHandler

Overrides:

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

Throws:

org.xml.sax.SAXException

endElement

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

endElement is also a callback method used by SAX parser that returns the ending element present in xml file. Here also we use local name only which is returned by the parser. If the given word maps with the ending element then this method retrieves the value of associated english meanings and it's corresponding examples.

Specified by:

endElement in interface org.xml.sax.ContentHandler

Overrides:

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

Throws:

org.xml.sax.SAXException

characters

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

The characters is a callback method used by the SAX parser to return the characters found in the xml file. These characters are stored in the buffer. The characters represents the values of english meaning and it's corresponding examples i.e., the text betweent the starting and ending elements in the xml file.

Specified by:

characters in interface org.xml.sax.ContentHandler

Overrides:

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

Throws:

org.xml.sax.SAXException