Package tigase.osgi.util

Class ClassUtil

java.lang.Object

tigase.osgi.util.ClassUtil

public class ClassUtil
extends Object

ClassUtil file contains code used for loading all implementations of specified interface or abstract class found in classpath. As a result of calling some functions you can have Set containing all required classes.

Created: Wed Oct 6 08:25:52 2004

Version:

$Rev: 609 $

Author:

Artur Hefczyc

Constructor Summary

Constructors

Constructor	Description
ClassUtil()

Method Summary

Modifier and Type	Method	Description
static <T extends Class,S extends Class> Set<S>	getClassesAnnotated(ClassLoader loader, File f, T cls)	Scans file for classes annotated with annotation T
static <T extends Class,S extends Class> Set<S>	getClassesAnnotated(org.osgi.framework.Bundle bundle, T cls)	Scans OSGI bundle for classes annotated with annotation T
static Set<Class<?>>	getClassesFromBundle(org.osgi.framework.Bundle bundle)
static Set<Class>	getClassesFromClassPath()
static Set<Class>	getClassesFromNames(ClassLoader loader, Set<String> names)
static <T extends Class> Set<T>	getClassesImplementing(ClassLoader loader, File f, T cls)
static <T extends Class> Set<T>	getClassesImplementing(Collection<Class> classes, T cls)
static <T extends Class> Set<T>	getClassesImplementing(org.osgi.framework.Bundle bundle, T cls)	Scans OSGI bundle for classes implementing class T
static <T extends Class> Set<T>	getClassesImplementing(T cls)
static String	getClassNameFromFileName(String fileName)
static Set<String>	getClassNamesFromDir(File dir)
static Set<String>	getClassNamesFromJar(File jarFile)
static Set<String>	getClassNamesFromWar(File jarFile)
static Set<String>	getFileListDeep(File path)
static <T> Set<T>	getImplementations(Class<T> obj)
static void	walkInDirForFiles(File base_dir, String path, Set<String> set)

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassUtil

public ClassUtil()

Method Detail

getClassNameFromFileName

public static String getClassNameFromFileName(String fileName)

getClassNamesFromDir

public static Set<String> getClassNamesFromDir(File dir)

getClassNamesFromJar

public static Set<String> getClassNamesFromJar(File jarFile)
                                        throws IOException

Throws:

IOException

getClassNamesFromWar

public static Set<String> getClassNamesFromWar(File jarFile)
                                        throws IOException

Throws:

IOException

getClassesAnnotated

public static <T extends Class,S extends Class> Set<S> getClassesAnnotated(ClassLoader loader,
                                                                                 File f,
                                                                                 T cls)
                                                                          throws IOException,
                                                                                 ClassNotFoundException

Scans file for classes annotated with annotation T

Type Parameters:

T -

S -

Parameters:

loader - class loader used to load classes

f - file to scan for classes

cls - annotation class

Returns:

set of annotated classes

Throws:

IOException

ClassNotFoundException

getClassesAnnotated

public static <T extends Class,S extends Class> Set<S> getClassesAnnotated(org.osgi.framework.Bundle bundle,
                                                                                 T cls)
                                                                          throws IOException,
                                                                                 ClassNotFoundException

Scans OSGI bundle for classes annotated with annotation T

Type Parameters:

T -

S -

Parameters:

bundle - bundle to scan for annotated classes

cls - annotation class

Returns:

set of annotated classes

Throws:

IOException

ClassNotFoundException

getClassesFromBundle

public static Set<Class<?>> getClassesFromBundle(org.osgi.framework.Bundle bundle)

getClassesFromClassPath

public static Set<Class> getClassesFromClassPath()
                                          throws IOException,
                                                 ClassNotFoundException

Throws:

IOException

ClassNotFoundException

getClassesFromNames

public static Set<Class> getClassesFromNames(ClassLoader loader,
                                             Set<String> names)
                                      throws ClassNotFoundException

Throws:

ClassNotFoundException

getClassesImplementing

public static <T extends Class> Set<T> getClassesImplementing(Collection<Class> classes,
                                                              T cls)

getClassesImplementing

public static <T extends Class> Set<T> getClassesImplementing(T cls)
                                                       throws IOException,
                                                              ClassNotFoundException

Throws:

IOException

ClassNotFoundException

getClassesImplementing

public static <T extends Class> Set<T> getClassesImplementing(ClassLoader loader,
                                                              File f,
                                                              T cls)
                                                       throws IOException,
                                                              ClassNotFoundException

Throws:

IOException

ClassNotFoundException

getClassesImplementing

public static <T extends Class> Set<T> getClassesImplementing(org.osgi.framework.Bundle bundle,
                                                              T cls)
                                                       throws IOException,
                                                              ClassNotFoundException

Scans OSGI bundle for classes implementing class T

Type Parameters:

T - return type param

Parameters:

bundle - bundle to scan

cls - base class

Returns:

returns set of implementations

Throws:

IOException

ClassNotFoundException

getFileListDeep

public static Set<String> getFileListDeep(File path)

getImplementations

public static <T> Set<T> getImplementations(Class<T> obj)
                                     throws IOException,
                                            ClassNotFoundException,
                                            InstantiationException,
                                            IllegalAccessException

Throws:

IOException

ClassNotFoundException

InstantiationException

IllegalAccessException

walkInDirForFiles

public static void walkInDirForFiles(File base_dir,
                                     String path,
                                     Set<String> set)