: Class ClassPathLoader

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JSPservletPkg
Class ClassPathLoader

java.lang.Object
  |
  +--java.lang.ClassLoader
        |
        +--JSPservletPkg.ClassPathLoader

public class ClassPathLoader
extends java.lang.ClassLoader

Class loader for classes included on ClassPath.

 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; version 2
 of the License.
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

Version:: 1, 0, 4
Author:: Alexis Grandemange

Inner Class Summary
`(package private) class`	`ClassPathLoader.ResourceEntry` resources value - maintains a buffer containing the resource and a lastModified time.

Inner classes inherited from class java.lang.ClassLoader

java.lang.ClassLoader.NativeLibrary

Field Summary
`private java.util.Hashtable`	`cache` Servlet object table.
`(package private) java.util.HashMap`	`classBufs` Binary warehouse.
`(package private) java.util.HashMap`	`classes` classPath classes. Key: class name. Value: class.
`JSPhandler`	`handler` Calling JSPhandler.
`(package private) java.lang.ClassLoader`	`parent` parent class loader.
`(package private) java.util.HashMap`	`resources` classPath resources. Key: class name. Value: ResourceEntry.
`(package private) java.util.HashMap`	`undefClasses` Classes whose creation failed (should be patches). Key: class name. Value: class.
`(package private) java.lang.String`	`URI` URI that triggered the creation of the instance.
`(package private) java.lang.String`	`URIRealPath` Path of URI.

Fields inherited from class java.lang.ClassLoader

bootstrapClassPath,  
classes,  
defaultDomain,  
defaultPermissions,  
getClassLoaderPerm,  
initialized,  
loadedLibraryNames,  
nativeLibraries,  
nativeLibraryContext,  
packages,  
parent,  
scl,  
sclSet,  
sys_paths,  
systemNativeLibraries,  
usr_paths

Constructor Summary
`ClassPathLoader(JSPhandler jh, java.lang.String URI, java.lang.String URIRealPath)` Creates classes stored in classPath and stores them in classes.

Method Summary
`(package private) JSPservletPkg.Servlet`	`cacheGet(java.lang.String className)` Returns a servlet instance.
`(package private) void`	`cachePut(java.lang.String className, JSPservletPkg.Servlet servlet)` Stores a servlet instance.
`(package private) long`	`getLastModified(java.lang.String name)` Returns resource archive last modified.
`java.net.URL`	`getResource(java.lang.String name)` Returns an URL served by JSPservlet.
`java.io.InputStream`	`getResourceAsStream(java.lang.String name)` Externally called method.
`java.io.InputStream`	`getResourceAsStreamFromArchive(java.lang.String name)` Invoked by InputSource in case of Cocoon.
`java.lang.Class`	`loadClass(java.lang.String name, boolean resolve)` Called by JSPloader.
`private void`	`loadClassData(java.lang.String jarPath)` Creates classes stored in jarPath archive and stores them in classes.

Methods inherited from class java.lang.ClassLoader

, 
addClass, 
check, 
defineClass, 
defineClass, 
defineClass, 
defineClass0, 
definePackage, 
findBootstrapClass, 
findClass, 
findLibrary, 
findLoadedClass, 
findNative, 
findResource, 
findResources, 
findSystemClass, 
getBootstrapClassPath, 
getBootstrapResource, 
getBootstrapResources, 
getCallerClassLoader, 
getDefaultDomain, 
getGetClassLoaderPerm, 
getPackage, 
getPackages, 
getParent, 
getResources, 
getSystemClassLoader, 
getSystemResource, 
getSystemResourceAsStream, 
getSystemResources, 
initializePath, 
isAncestor, 
loadClass, 
loadLibrary, 
loadLibrary0, 
resolveClass, 
resolveClass0, 
setSigners

Methods inherited from class java.lang.Object

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

Field Detail

handler

public JSPhandler handler

Calling JSPhandler.

parent

java.lang.ClassLoader parent

parent class loader.

classes

java.util.HashMap classes

classPath classes.

Key: class name.
Value: class.

undefClasses

java.util.HashMap undefClasses

Classes whose creation failed (should be patches).

Key: class name.
Value: class.

classBufs

java.util.HashMap classBufs

Binary warehouse. Used for one archive.

Key: class name.
Value: byte array (class binary).

resources

java.util.HashMap resources

classPath resources.

Key: class name.
Value: ResourceEntry.

URI

java.lang.String URI

URI that triggered the creation of the instance.

URIRealPath

java.lang.String URIRealPath

Path of URI. Used by getResourceAsStreamFromArchive.

cache

private java.util.Hashtable cache

Servlet object table. Must be synchronized -> Hashtable. Key: class name. Value: servlet object.

Constructor Detail

ClassPathLoader

public ClassPathLoader(JSPhandler jh,
                       java.lang.String URI,
                       java.lang.String URIRealPath)

Creates classes stored in classPath and stores them in classes.

Parameters:: jh - calling JSPhandler.

Method Detail

loadClassData

private void loadClassData(java.lang.String jarPath)

Creates classes stored in jarPath archive and stores them in classes.

Parameters:: jarPath - archive path.

loadClass

public java.lang.Class loadClass(java.lang.String name,
                                 boolean resolve)
                          throws java.lang.ClassNotFoundException

Called by JSPloader.

Parameters:: name - name of the class to load.; resolve - if the class must be resolved.
Returns:: Class
Overrides:: loadClass in class java.lang.ClassLoader

getResourceAsStream

public java.io.InputStream getResourceAsStream(java.lang.String name)

Externally called method. Also called by JSPloader. In the latter case, it is normal to not find a resource. Note that it is not called in privileged code. So it is better avoiding logging.

Parameters:: name - name of the resource to stream.
Returns:: InputStream
Overrides:: getResourceAsStream in class java.lang.ClassLoader

getResource

public java.net.URL getResource(java.lang.String name)

Returns an URL served by JSPservlet.

Parameters:: name - resource name.
Overrides:: getResource in class java.lang.ClassLoader

getLastModified

long getLastModified(java.lang.String name)

Returns resource archive last modified.

Parameters:: name - resource name.

getResourceAsStreamFromArchive

public java.io.InputStream getResourceAsStreamFromArchive(java.lang.String name)

Invoked by InputSource in case of Cocoon. Finds the right JSPloader and returns the resource from it.

Parameters:: name - name of the resource to stream.
Returns:: InputStream

cacheGet

final JSPservletPkg.Servlet cacheGet(java.lang.String className)

Returns a servlet instance.

Parameters:: className - servlet class name.

cachePut

final void cachePut(java.lang.String className,
                    JSPservletPkg.Servlet servlet)

Stores a servlet instance.

Parameters:: className - servlet class name.; className - servlet class name.