jpel.bridge.xml
Class NodeReaderXML

java.lang.Object
  |
  +--org.xml.sax.helpers.DefaultHandler
        |
        +--jpel.bridge.xml.NodeReaderXML

All Implemented Interfaces:

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

public class NodeReaderXML

extends org.xml.sax.helpers.DefaultHandler

implements NodeReader

Realiza a leitura de uma árvore escrita no formato XML.

Constructor Summary

NodeReaderXML()

Method Summary

void	characters(char[] ch, int start, int length)
void	endElement(java.lang.String uri, java.lang.String localName, java.lang.String qName)
jpel.bridge.xml.NodeXMLConstants	getConstants()
java.lang.String	getDescription() Retorna a descrição da ferramenta.
java.lang.String[]	getTypes() Retorna os tipos dos objetos que podem ser tratados por tal ferramenta.
jpel.tree.Node	read(jpel.util.dataholder.DataHolder holder) Lê os dados de um nó de uma fonte de dados.
void	setConstants(jpel.bridge.xml.NodeXMLConstants constants)
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

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

Constructor Detail

NodeReaderXML

public NodeReaderXML()
              throws javax.xml.parsers.ParserConfigurationException,
                     org.xml.sax.SAXException,
                     java.lang.ClassNotFoundException,
                     java.lang.IllegalAccessException,
                     java.lang.InstantiationException

Method Detail

setConstants

public void setConstants(jpel.bridge.xml.NodeXMLConstants constants)

getConstants

public jpel.bridge.xml.NodeXMLConstants getConstants()

getTypes

public java.lang.String[] getTypes()

Description copied from interface: GenericTool

Retorna os tipos dos objetos que podem ser tratados por tal ferramenta.

Specified by:

getTypes in interface GenericTool

Returns:

Um array com todos os tipos suportados pela ferramenta.

getDescription

public java.lang.String getDescription()

Description copied from interface: GenericTool

Retorna a descrição da ferramenta.

Specified by:

getDescription in interface GenericTool

Returns:

Uma descrição da ferramenta.

read

public jpel.tree.Node read(jpel.util.dataholder.DataHolder holder)
                    throws NodeException,
                           DataHolderException

Description copied from interface: NodeReader

Lê os dados de um nó de uma fonte de dados.

Specified by:

read in interface NodeReader

Parameters:

holder - Fonte de dados.

Returns:

O nó que corresponde a fonte de dados.

Throws:

NodeException - Quando há problemas com o nó lido.

DataHolderException - Quando há problemas na leitura dos dados.

startElement

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

Specified by:

startElement in interface org.xml.sax.ContentHandler

Overrides:

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

org.xml.sax.SAXException

characters

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

Specified by:

characters in interface org.xml.sax.ContentHandler

Overrides:

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

org.xml.sax.SAXException

endElement

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

Specified by:

endElement in interface org.xml.sax.ContentHandler

Overrides:

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

org.xml.sax.SAXException