Package weka.core

Class ClassCache

java.lang.Object

weka.core.ClassCache

All Implemented Interfaces:

RevisionHandler

public class ClassCache
extends Object
implements RevisionHandler

A singleton that stores all classes on the classpath.

Version:

$Revision$

Author:

fracpete (fracpete at waikato dot ac dot nz)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ClassCache.ClassFileFilter	For filtering classes.
static class	ClassCache.DirectoryFilter	For filtering classes.

Field Summary

Fields

Modifier and Type	Field	Description
static String	DEFAULT_PACKAGE	the key for the default package.
static boolean	VERBOSE	whether to output some debug information.

Constructor Summary

Constructors

Constructor	Description
ClassCache()	Initializes the cache.

Method Summary

Modifier and Type	Method	Description
boolean	add(String classname)	Adds the classname to the cache.
static String	cleanUp(String classname)	Fixes the classname, turns "/" and "\" into "." and removes ".class".
static String	extractPackage(String classname)	Extracts the package name from the (clean) classname.
ArrayList<String>	find(String matchText)	Find all classes that have the supplied matchText String in their suffix.
HashSet<String>	getClassnames(String pkgname)	Returns all the classes for the given package.
String	getRevision()	Returns the revision string.
static void	main(String[] args)	For testing only.
Enumeration<String>	packages()	Returns all the stored packages.
boolean	remove(String classname)	Removes the classname from the cache.

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

DEFAULT_PACKAGE

public static final String DEFAULT_PACKAGE

the key for the default package.

See Also:

Constant Field Values

Constructor Detail

ClassCache

public ClassCache()

Initializes the cache.

Method Detail

cleanUp

public static String cleanUp(String classname)

Fixes the classname, turns "/" and "\" into "." and removes ".class".

Parameters:

classname - the classname to process

Returns:

the processed classname

extractPackage

public static String extractPackage(String classname)

Extracts the package name from the (clean) classname.

Parameters:

classname - the classname to extract the package from

Returns:

the package name

add

public boolean add(String classname)

Adds the classname to the cache.

Parameters:

classname - the classname, automatically removes ".class" and turns "/" or "\" into "."

Returns:

true if adding changed the cache

remove

public boolean remove(String classname)

Removes the classname from the cache.

Parameters:

classname - the classname to remove

Returns:

true if the removal changed the cache

packages

public Enumeration<String> packages()

Returns all the stored packages.

Returns:

the package names

getClassnames

public HashSet<String> getClassnames(String pkgname)

Returns all the classes for the given package.

Parameters:

pkgname - the package to get the classes for

Returns:

the classes (sorted by name)

find

public ArrayList<String> find(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.

getRevision

public String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Returns:

the revision

main

public static void main(String[] args)

For testing only.

Parameters:

args - ignored