Package edu.pdx.cs410J.grader.gradebook

Class XmlHelper

java.lang.Object

edu.pdx.cs410J.grader.gradebook.XmlHelper

All Implemented Interfaces:

EntityResolver, ErrorHandler

Direct Known Subclasses:

XmlDumper, XmlGradeBookParser, XmlStudentParser

public class XmlHelper
extends Object
implements EntityResolver, ErrorHandler

This class contains fields and methods that are useful when dealing with XML data.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final DateTimeFormatter	DATE_TIME_FORMAT
protected static final String	publicID	The Public ID for the Grade Bookd DTD
protected static final String	systemID	The System ID for the Grade Book DTD

Constructor Summary

Constructors

Constructor	Description
XmlHelper()

Method Summary

Modifier and Type	Method	Description
void	error(SAXParseException ex)
protected static List<String>	extractNotesFrom(Element element)	Extracts a bunch of notes from an Element
protected static String	extractTextFrom(Element element)	Extracts the text from an Element.
void	fatalError(SAXParseException ex)
static byte[]	getBytesForXmlDocument(Document xmlDoc)
InputSource	resolveEntity(String publicId, String systemId)	Attempt to resolve the external entity (such as a DTD) described by the given public and system ID.
void	warning(SAXParseException ex)
(package private) static void	writeXmlToPrintWriter(Document doc, PrintWriter pw)

Methods inherited from class java.lang.Object

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

Field Details

systemID

protected static final String systemID

The System ID for the Grade Book DTD

See Also:

• Constant Field Values

publicID

protected static final String publicID

The Public ID for the Grade Bookd DTD

See Also:

• Constant Field Values

DATE_TIME_FORMAT

protected static final DateTimeFormatter DATE_TIME_FORMAT

Constructor Details

XmlHelper

public XmlHelper()

Method Details

getBytesForXmlDocument

public static byte[] getBytesForXmlDocument(Document xmlDoc)
                                     throws TransformerException

Throws:

TransformerException

resolveEntity

public InputSource resolveEntity(String publicId,
 String systemId)
                          throws SAXException,
IOException

Attempt to resolve the external entity (such as a DTD) described by the given public and system ID. The external entity is returned as a InputSource

Specified by:

resolveEntity in interface EntityResolver

Throws:

SAXException

IOException

warning

public void warning(SAXParseException ex)
             throws SAXException

Specified by:

warning in interface ErrorHandler

Throws:

SAXException

error

public void error(SAXParseException ex)
           throws SAXException

Specified by:

error in interface ErrorHandler

Throws:

SAXException

fatalError

public void fatalError(SAXParseException ex)
                throws SAXException

Specified by:

fatalError in interface ErrorHandler

Throws:

SAXException

extractNotesFrom

protected static List<String> extractNotesFrom(Element element)

Extracts a bunch of notes from an Element

extractTextFrom

protected static String extractTextFrom(Element element)

Extracts the text from an Element.

writeXmlToPrintWriter

static void writeXmlToPrintWriter(Document doc,
 PrintWriter pw)
                           throws TransformerException

Throws:

TransformerException