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 and Description
    `ClassUtil()`

  - ### Method Summary

    All Methods Static Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `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 <T extends Class,S extends Class> Set<S>` | `getClassesAnnotated(ClassLoader loader, File f, T cls)` Scans file for classes annotated with annotation T
    `static Set<Class>` | `getClassesFromClassPath()`
    `static Set<Class>` | `getClassesFromNames(ClassLoader loader, Set<String> names)`
    `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(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(T cls)`
    `static String` | `getClassNameFromFileName(String fileName)` Method description
    `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)

      Method description
      Parameters:
        `fileName` -

    - #### walkInDirForFiles

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

    - #### getFileListDeep

          public static Set<String> getFileListDeep(File path)

    - #### 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`

    - #### getClassesFromNames

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

      Throws:
        `ClassNotFoundException`

    - #### getClassesFromClassPath

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

      Throws:
        `IOException`
        `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`

    - #### getImplementations

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

      Throws:
        `IOException`
        `ClassNotFoundException`
        `InstantiationException`
        `IllegalAccessException`

    - #### 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`

    - #### 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`

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