net.spy.digg.parsers
Class BaseParser

java.lang.Object
  net.spy.digg.parsers.BaseParser

Direct Known Subclasses:

ErrorParser, ErrorsParser, PagedItemParser, TopicsParser

public abstract class BaseParser
extends java.lang.Object

Base parser class.

Constructor Summary

BaseParser()

Method Summary

static java.lang.String	getAttr(org.w3c.dom.Node n, java.lang.String s) Get the named attribute for the given node.
static java.lang.String	getAttr(org.w3c.dom.Node n, java.lang.String s, java.lang.String def) Get the named attribute for the given node, or a default.
protected org.w3c.dom.Document	getDocument(java.io.InputStream is, java.lang.String rootEl) Get a DOM document from the input stream.
protected abstract java.lang.String	getRootElementName() Get the name of the expected root element.
protected abstract void	handleDocument(org.w3c.dom.Document doc) Delegated document parsing.
void	parse(java.io.InputStream is) Parse from the given input stream.

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseParser

public BaseParser()

Method Detail

getDocument

protected org.w3c.dom.Document getDocument(java.io.InputStream is,
                                           java.lang.String rootEl)
                                    throws org.xml.sax.SAXException,
                                           java.io.IOException

Get a DOM document from the input stream.

Parameters:

is - the input stream

rootEl - the expected root element

Returns:

a DOM document

Throws:

org.xml.sax.SAXException

java.io.IOException

getRootElementName

protected abstract java.lang.String getRootElementName()

Get the name of the expected root element.

parse

public void parse(java.io.InputStream is)
           throws org.xml.sax.SAXException,
                  java.io.IOException

Parse from the given input stream.

Throws:

org.xml.sax.SAXException

java.io.IOException

handleDocument

protected abstract void handleDocument(org.w3c.dom.Document doc)
                                throws org.xml.sax.SAXException,
                                       java.io.IOException

Delegated document parsing.

Throws:

org.xml.sax.SAXException

java.io.IOException

getAttr

public static java.lang.String getAttr(org.w3c.dom.Node n,
                                       java.lang.String s)

Get the named attribute for the given node.

getAttr

public static java.lang.String getAttr(org.w3c.dom.Node n,
                                       java.lang.String s,
                                       java.lang.String def)

Get the named attribute for the given node, or a default.