net.sf.regain.crawler.document
Class PreparatorFactory

java.lang.Object
  net.sf.regain.crawler.document.PreparatorFactory

public class PreparatorFactory
extends Object

Loads and initializes the preparators.

Author:

Tilman Schneider, STZ-IDA an der FH Karlsruhe

Field Summary

private static org.apache.log4j.Logger	mLog The logger for this class
private static PreparatorFactory	mSingleton The singleton.

Constructor Summary

PreparatorFactory()

Method Summary

Preparator[]	createPreparatorArr(PreparatorSettings[] preparatorSettingsArr) Creates an array of preparators from the settings.
static PreparatorFactory	getInstance() Gets the PreparatorFactory instance.
private boolean	isPreparatorEnabled(String className, PreparatorSettings[] preparatorSettingsArr) Checks whether a preparator is enabled.
private void	loadPrepararorJar(File file, HashMap preparatorHash, PreparatorSettings[] preparatorSettingsArr) Loads a preparator jar.

Methods inherited from class java.lang.Object

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

Field Detail

mLog

private static org.apache.log4j.Logger mLog

The logger for this class

mSingleton

private static PreparatorFactory mSingleton

The singleton.

Constructor Detail

PreparatorFactory

public PreparatorFactory()

Method Detail

getInstance

public static PreparatorFactory getInstance()

Gets the PreparatorFactory instance.

Returns:

The PreparatorFactory instance.

createPreparatorArr

public Preparator[] createPreparatorArr(PreparatorSettings[] preparatorSettingsArr)
                                 throws RegainException

Creates an array of preparators from the settings.

Parameters:

preparatorSettingsArr - The list with the preparator settings.

Returns:

The preparators.

Throws:

RegainException - If the creation of a preparator failed.

loadPrepararorJar

private void loadPrepararorJar(File file,
                               HashMap preparatorHash,
                               PreparatorSettings[] preparatorSettingsArr)
                        throws RegainException

Loads a preparator jar.

Parameters:

file - The preparator jar to load.

preparatorHash - The hash where to add all loaded preparators.

preparatorSettingsArr - The preparator settings. Used to determine whether a preparator is enabled.

Throws:

RegainException - If loading the jar failed.

isPreparatorEnabled

private boolean isPreparatorEnabled(String className,
                                    PreparatorSettings[] preparatorSettingsArr)

Checks whether a preparator is enabled.

Parameters:

className - The class name of the preparator to check.

preparatorSettingsArr - The preparator settings to use to determine whether a preparator is enabled.

Returns:

Whether the preparator is enabled.