JSPservletPkg
Class JSPhandler.ClassEntry

java.lang.Object
  |
  +--JSPservletPkg.JSPhandler.ClassEntry

class JSPhandler.ClassEntry

extends java.lang.Object

Class invoked by JSPhandler for a given jar name. It caches created target servlets and JSPs and manages a JSPloader.

Inner Class Summary

(package private) class	JSPhandler.ClassEntry.ServletInfo Class of servletObjects entries.
(package private) class	JSPhandler.ClassEntry.Stat wraps statistic data. uses a Properties to store and persist stats.

Field Summary

(package private) BackCheck	backCheck Version 1.0.3.
(package private) JSPhandler	handler back pointer on JSPhandler
(package private) java.lang.String	jarName jar name
(package private) java.lang.String	jarURL jar remote location (URL)
(package private) JSPloader	jl ClassLoader
(package private) java.util.HashMap	servletObjects HashMap key: class name (full path) value: ServletInfo
(package private) JSPhandler.ClassEntry.Stat	stat Handle on Stat object.

Constructor Summary

(package private)

JSPhandler.ClassEntry(JSPhandler jh, java.lang.String jarName, java.lang.String jarURL) Version 1.0.4.

Method Summary

(package private) void	delete() Clears itself and class loaded stuff.
protected void	finalize() to avoid loitering
(package private) JSPservletPkg.Servlet	get(java.lang.String classPath) Given a target classpath, returns a Servlet object.
(package private) long	getLastModified(java.lang.String name) Returns resource timestamp
(package private) java.io.InputStream	getResourceAsStream(java.lang.String classPath) Invoked by JSPhandler.
(package private) java.lang.String	getRoutingResource(java.lang.String name) Version 1.0.3 Returns comment associated with routing if the resource is a routing one or null.
(package private) void	update(java.lang.String remoteLocation) Clears itself and class loaded stuff and recreates class loader.

Methods inherited from class java.lang.Object

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

Field Detail

jl

JSPloader jl

ClassLoader

jarName

java.lang.String jarName

jar name

jarURL

java.lang.String jarURL

jar remote location (URL)

servletObjects

java.util.HashMap servletObjects

HashMap key: class name (full path) value: ServletInfo

See Also:

JSPhandler.ClassEntry.ServletInfo

handler

JSPhandler handler

back pointer on JSPhandler

stat

JSPhandler.ClassEntry.Stat stat

Handle on Stat object.

backCheck

BackCheck backCheck

Version 1.0.3. BackCheck handle. Wraps a Mapper.

Constructor Detail

JSPhandler.ClassEntry

JSPhandler.ClassEntry(JSPhandler jh,
                      java.lang.String jarName,
                      java.lang.String jarURL)
                throws JSPloaderException

Version 1.0.4. Mapper persistent cache support.

Constructor.

• get JAR remote location from remoteLocations.
• Creates JSPloader.
• Instanciates a servletObjects target cache.

Parameters:

jh - invoking JSPhandler.

jarName - application prefix.

jarURL - jar remote location.

Throws:

JSPloaderException - remote URL of jar not defined.

Method Detail

delete

final void delete()

Clears itself and class loaded stuff.

update

final void update(java.lang.String remoteLocation)
           throws JSPloaderException

Clears itself and class loaded stuff and recreates class loader.

1. Enumerates servletObjects target cache and destroys each target found
2. Clear references.
3. Invokes garbage collector.
4. Creates new JSPloader.
5. Instanciates a new servletObjects target cache.

Parameters:

remoteLocation - URL where to download the jar.

Throws:

JSPloaderException - remote URL of jar not defined.

See Also:

JSPhandler.ClassEntry.ServletInfo

get

final JSPservletPkg.Servlet get(java.lang.String classPath)
                         throws JSPloaderException,
                                java.lang.ClassNotFoundException

Given a target classpath, returns a Servlet object.

1. Get the Class corresponding to the target classPath.
2. Instanciate an object of this class and initialize it.

Parameters:

classPath - full name of the JSP or servlet to load and instantiate.

Returns:

the requested Servlet.

Throws:

JSPloaderException - class loading or instantiation failure.

See Also:

JSPhandler.ClassEntry.ServletInfo

getResourceAsStream

final java.io.InputStream getResourceAsStream(java.lang.String classPath)

Invoked by JSPhandler.

Parameters:

classPath - path to the resource.

Returns:

InputStream on resource.

getLastModified

final long getLastModified(java.lang.String name)

Returns resource timestamp

Parameters:

name - name of the resource.

Returns:

long either

1. -1: no information (resource managed by container)
2. 0: unknown timestamp
3. >1: valid timestamp

getRoutingResource

final java.lang.String getRoutingResource(java.lang.String name)

Version 1.0.3

Returns comment associated with routing if the resource is a routing one or null.

Parameters:

name - name of the resource to stream.

finalize

protected void finalize()

to avoid loitering

Overrides:

finalize in class java.lang.Object