Package org.ow2.clif.util

Class ClifClassLoader

  • public class ClifClassLoader
extends java.lang.ClassLoader
    Special classloader bound to the CodeServer utility, enabling network download of classes and resources. Regardless this download facility, it also provides classes prefetching utilities.
    Author:
    Bruno Dillenseger
    See Also:
    CodeServer

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static void clear()
      flushes the class cache and renews the CLIF class loader singleton
      static java.util.List<java.lang.Class<?>> fetchClassDependencies​(java.lang.Class<?> clazz)
      Loads all dependencies of a class, i.e.
      static void fetchClassDependencies​(java.util.List<java.lang.Class<?>> classes)
      Loads all dependencies of a provided list of classes, i.e.
      protected java.lang.Class<?> findClass​(java.lang.String name)  
      java.net.URL findResource​(java.lang.String name)  
      java.util.Enumeration<java.net.URL> findResources​(java.lang.String name)  
      byte[] getBytes​(java.lang.String name)  
      static ClifClassLoader getClassLoader()
      Get the CLIF class loader singleton.

      • Methods inherited from class java.lang.ClassLoader

        clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, loadClass, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • getClassLoader

        public static ClifClassLoader getClassLoader()
        Get the CLIF class loader singleton. Caution: the singleton changes when calling static method clear().
        Returns:
        the CLIF class loader singleton
        See Also:
        clear()

      • clear

        public static void clear()
        flushes the class cache and renews the CLIF class loader singleton

      • fetchClassDependencies

        public static java.util.List<java.lang.Class<?>> fetchClassDependencies​(java.lang.Class<?> clazz)
        Loads all dependencies of a class, i.e. classes involved in its superclass, attributes, methods and constructors, in a recursive manner. Important note: does not use the CLIF class loader but the default context class loader (i.e. the class loader that loaded the ClifClassLoader class).
        Parameters:
        clazz - the class to look for dependencies
        Returns:
        the list of preloaded classes clazz depends on. The caller may keep a reference to this list to avoid garbage collection of preloaded classes.

      • fetchClassDependencies

        public static void fetchClassDependencies​(java.util.List<java.lang.Class<?>> classes)
        Loads all dependencies of a provided list of classes, i.e. classes involved in their superclasses, attributes, methods and constructors, in a recursive manner. Important note: does not use the CLIF class loader but the default context class loader (i.e. the class loader that loaded the ClifClassLoader class).
        Parameters:
        classes - the initial list of classes, that will be extended with all dependent, preloaded classes

      • getBytes

        public byte[] getBytes​(java.lang.String name)
                throws java.io.IOException
        Throws:
        java.io.IOException

      • findClass

        protected java.lang.Class<?> findClass​(java.lang.String name)
                                throws java.lang.ClassNotFoundException
        Overrides:
        findClass in class java.lang.ClassLoader
        Throws:
        java.lang.ClassNotFoundException

      • findResource

        public java.net.URL findResource​(java.lang.String name)
        Overrides:
        findResource in class java.lang.ClassLoader

      • findResources

        public java.util.Enumeration<java.net.URL> findResources​(java.lang.String name)
        Overrides:
        findResources in class java.lang.ClassLoader
        Parameters:
        name - the resource's name
        Returns:
        an empty or single-value URL enumeration for the named resource
        See Also:
        findResource(String)