weka.gui

Class GenericPropertiesCreator

java.lang.Object

weka.gui.GenericPropertiesCreator

public class GenericPropertiesCreator
extends Object

This class can generate the properties object that is normally loaded from the GenericObjectEditor.props file (= PROPERTY_FILE). It takes the GenericPropertiesCreator.props file as a template to determine all the derived classes by checking the classes in the given packages (a file with the same name in your home directory overrides the the one in the weka/gui directory/package).
E.g. if we want to have all the subclasses of the Classifier class then we specify the superclass ("weka.classifiers.Classifier") and the packages where to look for ("weka.classifiers.bayes" etc.):

 
   weka.classifiers.Classifier=\
     weka.classifiers.bayes,\
     weka.classifiers.functions,\
     weka.classifiers.lazy,\
     weka.classifiers.meta,\
     weka.classifiers.trees,\
     weka.classifiers.rules
  
 

This creates the same list as stored in the GenericObjectEditor.props file, but it will also add additional classes, that are not listed in the static list (e.g. a newly developed Classifier), but still in the classpath.

For discovering the subclasses the whole classpath is inspected, which means that you can have several parallel directories with the same package structure (e.g. a release directory and a developer directory with additional classes).

The dynamic discovery can be turned off via the UseDyanmic property in the props file (values: true|false).

Version:

$Revision: 7059 $

Author:

FracPete (fracpete at waikato dot ac dot nz)

See Also:

CREATOR_FILE, PROPERTY_FILE, USE_DYNAMIC, GenericObjectEditor, ClassDiscovery

Field Summary

Fields

Modifier and Type	Field and Description
static String	USE_DYNAMIC name of property whether to use the dynamic approach or the old GenericObjectEditor.props file
static boolean	VERBOSE whether to output some debug information

Constructor Summary

Constructors

Constructor and Description
GenericPropertiesCreator() initializes the creator, locates the props file with the Utils class.
GenericPropertiesCreator(String filename) initializes the creator, the given file overrides the props-file search of the Utils class

Method Summary

Methods

Modifier and Type	Method and Description
void	execute() generates the props-file for the GenericObjectEditor and stores it
void	execute(boolean store) generates the props-file for the GenericObjectEditor and stores it only if the the param store is TRUE.
boolean	getExplicitPropsFile() returns TRUE, if a file is loaded and not the Utils class used for locating the props file.
String	getInputFilename() returns the name of the input file
Properties	getInputProperties() returns the input properties object (template containing the packages)
String	getOutputFilename() returns the name of the output file
Properties	getOutputProperties() returns the output properties object (structure like the template, but filled with classes instead of packages)
static void	main(String[] args) for generating props file: no parameter: see default constructor 1 parameter (i.e., filename): see default constructor + setOutputFilename(String) 2 parameters (i.e, filenames): see constructor with String argument + setOutputFilename(String)
void	setExplicitPropsFile(boolean value) if FALSE, the locating of a props-file of the Utils-class is used, otherwise it's tried to load the specified file
void	setInputFilename(String filename) sets the file to get the information about the packages from.
void	setOutputFilename(String filename) sets the file to output the properties for the GEO to
boolean	useDynamic() gets whether the dynamic approach should be used or not

Methods inherited from class java.lang.Object

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

Field Detail

VERBOSE

public static final boolean VERBOSE

whether to output some debug information

See Also:

Constant Field Values

USE_DYNAMIC

public static final String USE_DYNAMIC

name of property whether to use the dynamic approach or the old GenericObjectEditor.props file

See Also:

Constant Field Values

Constructor Detail

GenericPropertiesCreator

public GenericPropertiesCreator()
                         throws Exception

initializes the creator, locates the props file with the Utils class.

Throws:

Exception - if loading of CREATOR_FILE fails

See Also:

CREATOR_FILE, Utils.readProperties(String), loadInputProperties()

GenericPropertiesCreator

public GenericPropertiesCreator(String filename)
                         throws Exception

initializes the creator, the given file overrides the props-file search of the Utils class

Parameters:

filename - the file containing the packages to create a props file from

Throws:

Exception - if loading of the file fails

See Also:

CREATOR_FILE, Utils.readProperties(String), loadInputProperties()

Method Detail

setExplicitPropsFile

public void setExplicitPropsFile(boolean value)

if FALSE, the locating of a props-file of the Utils-class is used, otherwise it's tried to load the specified file

Parameters:

value - if true the specified file will be loaded not via the Utils-class

See Also:

Utils.readProperties(String), loadInputProperties()

getExplicitPropsFile

public boolean getExplicitPropsFile()

returns TRUE, if a file is loaded and not the Utils class used for locating the props file.

Returns:

true if the specified file is used and not the one found by the Utils class

See Also:

Utils.readProperties(String), loadInputProperties()

getOutputFilename

public String getOutputFilename()

returns the name of the output file

Returns:

the name of the output file

setOutputFilename

public void setOutputFilename(String filename)

sets the file to output the properties for the GEO to

Parameters:

filename - the filename for the output

getInputFilename

public String getInputFilename()

returns the name of the input file

Returns:

the name of the input file

setInputFilename

public void setInputFilename(String filename)

sets the file to get the information about the packages from. automatically sets explicitPropsFile to TRUE.

Parameters:

filename - the filename for the input

See Also:

setExplicitPropsFile(boolean)

getInputProperties

public Properties getInputProperties()

returns the input properties object (template containing the packages)

Returns:

the input properties (the template)

getOutputProperties

public Properties getOutputProperties()

returns the output properties object (structure like the template, but filled with classes instead of packages)

Returns:

the output properties (filled with classes)

useDynamic

public boolean useDynamic()

gets whether the dynamic approach should be used or not

Returns:

true if the dynamic approach is to be used

execute

public void execute()
             throws Exception

generates the props-file for the GenericObjectEditor and stores it

Throws:

Exception - if something goes wrong

See Also:

execute(boolean)

execute

public void execute(boolean store)
             throws Exception

generates the props-file for the GenericObjectEditor and stores it only if the the param store is TRUE. If it is FALSE then the generated properties file can be retrieved via the getOutputProperties method.

Parameters:

store - if TRUE then the properties file is stored to the stored filename

Throws:

Exception - if something goes wrong

See Also:

getOutputFilename(), setOutputFilename(String), getOutputProperties()

main

public static void main(String[] args)
                 throws Exception

for generating props file:

• no parameter: see default constructor
• 1 parameter (i.e., filename): see default constructor + setOutputFilename(String)
• 2 parameters (i.e, filenames): see constructor with String argument + setOutputFilename(String)

Parameters:

args - the commandline arguments

Throws:

Exception - if something goes wrong

See Also:

GenericPropertiesCreator(), GenericPropertiesCreator(String), setOutputFilename(String)