infovis.graph.io
Class HTMLGraphReader

java.lang.Object
  infovis.io.AbstractReader
      infovis.table.io.AbstractTableReader
          infovis.graph.io.HTMLGraphReader

public class HTMLGraphReader
extends AbstractTableReader

The HTMLGraphReader is creates a graph from html web sites.

Version:

$Revision: 1.26 $

Author:

Jean-Daniel Fekete

InfoVis factory arguments:

GraphReaderFactory html

Field Summary

static String	COLUMN_DATE
static String	COLUMN_LENGTH
static String	COLUMN_MIME_TYPE
static String	COLUMN_NAME
static String	COLUMN_REF
static String	COLUMN_TITLE
static String	COLUMN_URL

Constructor Summary

HTMLGraphReader(String name, Graph graph)
Constructor for HTMLGraphReader.

Method Summary

boolean	add(String url) Adds a specified url to the queue of URL to load.
boolean	add(URL url) Adds a specified url to the queue of URL to load.
void	annotateWithLog(BufferedReader in, String path) DOCUMENT ME!
boolean	considerURL(URL url) Test whether a specified URL should be considered for loading.
ObjectColumn	createUrlColumn(ObjectColumn obj) Creates a column of URLs.
URL	getBase()
PrintStream	getLog() Returns the log.
LinkedList	getQueue() Returns the list of URL strings on the queue
URL	getRealRoot() Returns the realRoot.
Map	getUrlMap() Returns the URL map.
boolean	isAddingURL()
boolean	load() Main method for loading the file.
int	loadOne(String urlString)
URL	normalize(URL url) Normalize a specified URL.
boolean	remove(String urlString)
void	setAddingURL(boolean b)
void	setLog(PrintStream log) Sets the log.
void	setQueue(LinkedList list) Sets the list of URLs to load, as strings
void	setRealRoot(URL realRoot) Sets the realRoot.

Methods inherited from class infovis.table.io.AbstractTableReader

close, getBuffer, getBufferedReader, getCommentChar, getField, getIn, getTable, ignoreLine, isEof, read, readInt, readLine, readQuoted, setBuffer, setCommentChar, setEof, setTable, skipToEol

Methods inherited from class infovis.io.AbstractReader

createColumn, getEncoding, getName, guessFieldType, setEncoding, setIn, setName

Methods inherited from class java.lang.Object

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

Field Detail

COLUMN_NAME

public static final String COLUMN_NAME

See Also:

Constant Field Values

COLUMN_URL

public static final String COLUMN_URL

See Also:

Constant Field Values

COLUMN_LENGTH

public static final String COLUMN_LENGTH

See Also:

Constant Field Values

COLUMN_DATE

public static final String COLUMN_DATE

See Also:

Constant Field Values

COLUMN_MIME_TYPE

public static final String COLUMN_MIME_TYPE

See Also:

Constant Field Values

COLUMN_TITLE

public static final String COLUMN_TITLE

See Also:

Constant Field Values

COLUMN_REF

public static final String COLUMN_REF

See Also:

Constant Field Values

Constructor Detail

HTMLGraphReader

public HTMLGraphReader(String name,
                       Graph graph)

Constructor for HTMLGraphReader.

Parameters:

name - the URL to load.

graph - the Graph to read.

Method Detail

considerURL

public boolean considerURL(URL url)

Test whether a specified URL should be considered for loading.

Parameters:

url - the url.

Returns:

true if a specified URL should be considered for loading.

add

public boolean add(String url)

Adds a specified url to the queue of URL to load.

Parameters:

url - the url.

Returns:

true if the URL has been queued.

normalize

public URL normalize(URL url)

Normalize a specified URL.

Parameters:

url - the URL.

Returns:

the normalized URL.

add

public boolean add(URL url)

Adds a specified url to the queue of URL to load.

Parameters:

url - the url.

Returns:

true if the URL has been queued.

remove

public boolean remove(String urlString)

loadOne

public int loadOne(String urlString)
            throws FileNotFoundException,
                   IOException

Throws:

FileNotFoundException

IOException

load

public boolean load()

Description copied from class: AbstractReader

Main method for loading the file. The loading may fail at any point, leaving the table in an indefinite state if the methods returns false.

Specified by:

load in class AbstractReader

Returns:

true if the file has been loaded without error, false otherwise.

See Also:

AbstractReader.load()

createUrlColumn

public ObjectColumn createUrlColumn(ObjectColumn obj)

Creates a column of URLs.

Parameters:

obj - an ObjectColumn which will contain the urls. If null, a new one will be created with "URL" as name.

getUrlMap

public Map getUrlMap()

Returns the URL map.

Returns:

the URL map.

getLog

public PrintStream getLog()

Returns the log.

Returns:

PrintStream

setLog

public void setLog(PrintStream log)

Sets the log.

Parameters:

log - The log to set

annotateWithLog

public void annotateWithLog(BufferedReader in,
                            String path)

DOCUMENT ME!

Parameters:

in - DOCUMENT ME!

path - DOCUMENT ME!

getRealRoot

public URL getRealRoot()

Returns the realRoot.

Returns:

URL

setRealRoot

public void setRealRoot(URL realRoot)

Sets the realRoot.

Parameters:

realRoot - The realRoot to set

getQueue

public LinkedList getQueue()

Returns the list of URL strings on the queue

Returns:

the list of URL strings on the queue

setQueue

public void setQueue(LinkedList list)

Sets the list of URLs to load, as strings

Parameters:

list - the list of URLs to load, as strings

isAddingURL

public boolean isAddingURL()

setAddingURL

public void setAddingURL(boolean b)

getBase

public URL getBase()