org.jwalk
Class GeneratorLoader

java.lang.Object
  java.lang.ClassLoader
      java.security.SecureClassLoader
          java.net.URLClassLoader
              org.jwalk.GeneratorLoader

Direct Known Subclasses:

TestClassLoader

public class GeneratorLoader
extends java.net.URLClassLoader

GeneratorLoader is a class loader for loading custom generators. A single GeneratorLoader is constructed for each JWalk runtime. This permits each CustomGenerator class to be loaded once per runtime (and once loaded, a CustomGenerator class cannot be reloaded).

Version:

1.0

Author:

Anthony Simons

Constructor Summary

GeneratorLoader(java.lang.ClassLoader delegate)
Creates a GeneratorLoader that delegates to another loader.

Method Summary

boolean

addDirectory(java.io.File directory) Adds a directory path to the current list of search paths.

Methods inherited from class java.net.URLClassLoader

addURL, definePackage, findClass, findResource, findResources, getPermissions, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findSystemClass, getPackage, getPackages, getParent, getResource, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, loadClass, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

GeneratorLoader

public GeneratorLoader(java.lang.ClassLoader delegate)

Creates a GeneratorLoader that delegates to another loader. This GeneratorLoader initially has an empty list of search paths. When loading a class file, this GeneratorLoader first seeks whether its delegate ClassLoader has already loaded the class, in which case the cached class is returned. Otherwise, this GeneratorLoader will load the class from one of the directories added to its current search directory paths.

Parameters:

delegate - the delegate ClassLoader to use first.

Method Detail

addDirectory

public boolean addDirectory(java.io.File directory)

Adds a directory path to the current list of search paths. If the directory is not already one of this GeneratorLoader's search paths, adds this path to the list and returns true. Otherwise, leaves the current list of paths unchanged and returns false. If the directory is a malformed path, returns false.

Parameters:

directory - a directory path.

Returns:

true, if the path was added.