Package weka.core

Class ClassDiscovery

java.lang.Object

weka.core.ClassDiscovery

All Implemented Interfaces:

RevisionHandler

public class ClassDiscovery
extends java.lang.Object
implements RevisionHandler

This class is used for discovering classes that implement a certain interface or a derived from a certain class.

Version:

$Revision: 14293 $

Author:

FracPete (fracpete at waikato dot ac dot nz)

See Also:

ClassDiscovery.StringCompare

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ClassDiscovery.StringCompare	compares two strings.

Field Summary

Fields

Modifier and Type	Field	Description
static boolean	VERBOSE	whether to output some debug information.

Constructor Summary

Constructors

Constructor	Description
ClassDiscovery()

Method Summary

Modifier and Type	Method	Description
static void	clearCache()	clears the cache for class/classnames queries.
static void	clearClassCache()	Calls clearCache() and resets the cache of classes on the classpath (i.e.
static java.util.Vector<java.lang.String>	find(java.lang.Class<?> cls, java.lang.String pkgname)	Checks the given package for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
static java.util.Vector<java.lang.String>	find(java.lang.Class<?> cls, java.lang.String[] pkgnames)	Checks the given packages for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
static java.util.ArrayList<java.lang.String>	find(java.lang.String matchText)	Find all classes that have the supplied matchText String in their suffix.
static java.util.Vector<java.lang.String>	find(java.lang.String classname, java.lang.String pkgname)	Checks the given package for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
static java.util.Vector<java.lang.String>	find(java.lang.String classname, java.lang.String[] pkgnames)	Checks the given packages for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.
static java.util.Vector<java.lang.String>	findPackages()	Lists all packages it can find in the classpath.
java.lang.String	getRevision()	Returns the revision string.
static void	main(java.lang.String[] args)	Possible calls: weka.core.ClassDiscovery <packages> Prints all the packages in the current classpath weka.core.ClassDiscovery <classname> <packagename(s)> Prints the classes it found.

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

Constructor Detail

ClassDiscovery

public ClassDiscovery()

Method Detail

find

public static java.util.Vector<java.lang.String> find(java.lang.String classname,
                                                      java.lang.String[] pkgnames)

Checks the given packages for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.

Parameters:

classname - the class/interface to look for

pkgnames - the packages to search in

Returns:

a list with all the found classnames

find

public static java.util.Vector<java.lang.String> find(java.lang.String classname,
                                                      java.lang.String pkgname)

Checks the given package for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.

Parameters:

classname - the class/interface to look for

pkgname - the package to search in

Returns:

a list with all the found classnames

find

public static java.util.Vector<java.lang.String> find(java.lang.Class<?> cls,
                                                      java.lang.String[] pkgnames)

Checks the given packages for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.

Parameters:

cls - the class/interface to look for

pkgnames - the packages to search in

Returns:

a list with all the found classnames

find

public static java.util.ArrayList<java.lang.String> find(java.lang.String matchText)

Find all classes that have the supplied matchText String in their suffix.

Parameters:

matchText - the text to match

Returns:

an array list of matching fully qualified class names.

find

public static java.util.Vector<java.lang.String> find(java.lang.Class<?> cls,
                                                      java.lang.String pkgname)

Checks the given package for classes that inherited from the given class, in case it's a class, or implement this class, in case it's an interface.

Parameters:

cls - the class/interface to look for

pkgname - the package to search in

Returns:

a list with all the found classnames

findPackages

public static java.util.Vector<java.lang.String> findPackages()

Lists all packages it can find in the classpath.

Returns:

a list with all the found packages

clearCache

public static void clearCache()

clears the cache for class/classnames queries.

clearClassCache

public static void clearClassCache()

Calls clearCache() and resets the cache of classes on the classpath (i.e. forces a rescan of the classpath).

getRevision

public java.lang.String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Returns:

the revision

main

public static void main(java.lang.String[] args)

Possible calls:

• weka.core.ClassDiscovery <packages>
  Prints all the packages in the current classpath
• weka.core.ClassDiscovery <classname> <packagename(s)>
  Prints the classes it found.

Parameters:

args - the commandline arguments