ace.xmlparsers
Class ParseACEProjectFileHandler

java.lang.Object
  extended by org.xml.sax.helpers.DefaultHandler
      extended by mckay.utilities.xml.ParseFileHandler
          extended by ace.xmlparsers.ParseACEProjectFileHandler
All Implemented Interfaces:
org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler

public class ParseACEProjectFileHandler
extends mckay.utilities.xml.ParseFileHandler

An extension of the Xerces XML DefaultHandler class that implements the SAX ContentHandler. The methods of this class are called by an instance of an XMLReader while it is parsing an XML document.

This particular implementation is custom designed to parse XML files of the ace_project_file type used by the ACE classification system. A custom exceptions is thrown if the file is not of this type. At the end of parsing, the contents of the file elements are stored in the parsed_file_contents field.


Field Summary
 
Fields inherited from class mckay.utilities.xml.ParseFileHandler
comments, parsed_file_contents
 
Constructor Summary
ParseACEProjectFileHandler()
           
 
Method Summary
 void characters(char[] ch, int start, int length)
          This stores the contents of parsed text elements.
 void endElement(java.lang.String namespace, java.lang.String name, java.lang.String qName)
          This method is called when the end tag of an XML element is encountered.
 void startDocument()
          This method is called when the start of the XML file to be parsed is reached.
 void startElement(java.lang.String namespace, java.lang.String name, java.lang.String qName, org.xml.sax.Attributes atts)
          This method is called when the start of an XML element is encountered.
 
Methods inherited from class org.xml.sax.helpers.DefaultHandler
endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startPrefixMapping, unparsedEntityDecl, warning
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ParseACEProjectFileHandler

public ParseACEProjectFileHandler()
Method Detail

startDocument

public void startDocument()
This method is called when the start of the XML file to be parsed is reached. Initializes the parsed_file_contents field to an array of empty strings and initializes the count to 0.

Specified by:
startDocument in interface org.xml.sax.ContentHandler
Overrides:
startDocument in class org.xml.sax.helpers.DefaultHandler

startElement

public void startElement(java.lang.String namespace,
                         java.lang.String name,
                         java.lang.String qName,
                         org.xml.sax.Attributes atts)
                  throws org.xml.sax.SAXException
This method is called when the start of an XML element is encountered. Increments the count when this occurs.

Specified by:
startElement in interface org.xml.sax.ContentHandler
Overrides:
startElement in class org.xml.sax.helpers.DefaultHandler
Parameters:
name - Name of the element that is encountered.
Throws:
org.xml.sax.SAXException - Exception thrown if is wrong type of XML file.

characters

public void characters(char[] ch,
                       int start,
                       int length)
This stores the contents of parsed text elements.

Specified by:
characters in interface org.xml.sax.ContentHandler
Overrides:
characters in class org.xml.sax.helpers.DefaultHandler

endElement

public void endElement(java.lang.String namespace,
                       java.lang.String name,
                       java.lang.String qName)
This method is called when the end tag of an XML element is encountered.

Specified by:
endElement in interface org.xml.sax.ContentHandler
Overrides:
endElement in class org.xml.sax.helpers.DefaultHandler
Parameters:
name - Name of the element that is encountered.