org.eclipse.jetty.jndi

Class ContextFactory

java.lang.Object

org.eclipse.jetty.jndi.ContextFactory

All Implemented Interfaces:

ObjectFactory

public class ContextFactory
extends Object
implements ObjectFactory

ContextFactory.java This is an object factory that produces a jndi naming context based on a classloader. It is used for the java:comp context. This object factory is bound at java:comp. When a lookup arrives for java:comp, this object factory is invoked and will return a context specific to the caller's environment (so producing the java:comp/env specific to a webapp). The context selected is based on classloaders. First we try looking at the thread context classloader if it is set, and walk its hierarchy, creating a context if none is found. If the thread context classloader is not set, then we use the classloader associated with the current Context. If there is no current context, or no classloader, we return null. Created: Fri Jun 27 09:26:40 2003

Constructor Summary

Constructors

Constructor and Description
ContextFactory()

Method Summary

Methods

Modifier and Type	Method and Description
static void	dump(Appendable out, String indent)
Context	getContextForClassLoader(ClassLoader loader) Find the naming Context for the given classloader
Object	getObjectInstance(Object obj, Name name, Context nameCtx, Hashtable env) Find or create a context which pertains to a classloader.
NamingContext	newNamingContext(Object obj, ClassLoader loader, Hashtable env, Name name, Context parentCtx) Create a new NamingContext.
static void	resetComponentContext(Context ctx) Set back the context with the given value.
static Context	setComponentContext(Context ctx) Associate the given Context with the current thread.

Methods inherited from class java.lang.Object

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

Constructor Detail

ContextFactory

public ContextFactory()

Method Detail

getObjectInstance

public Object getObjectInstance(Object obj,
                       Name name,
                       Context nameCtx,
                       Hashtable env)
                         throws Exception

Find or create a context which pertains to a classloader. If the thread context classloader is set, we try to find an already-created naming context for it. If one does not exist, we walk its classloader hierarchy until one is found, or we run out of parent classloaders. In the latter case, we will create a new naming context associated with the original thread context classloader. If the thread context classloader is not set, we obtain the classloader from the current jetty Context, and look for an already-created naming context. If there is no current jetty Context, or it has no associated classloader, we return null.

Specified by:

getObjectInstance in interface ObjectFactory

Throws:

Exception

See Also:

ObjectFactory.getObjectInstance(java.lang.Object, javax.naming.Name, javax.naming.Context, java.util.Hashtable)

newNamingContext

public NamingContext newNamingContext(Object obj,
                             ClassLoader loader,
                             Hashtable env,
                             Name name,
                             Context parentCtx)
                               throws Exception

Create a new NamingContext.

Parameters:

obj -

loader -

env -

name -

parentCtx -

Returns:

Throws:

Exception

getContextForClassLoader

public Context getContextForClassLoader(ClassLoader loader)

Find the naming Context for the given classloader

Parameters:

loader -

Returns:

setComponentContext

public static Context setComponentContext(Context ctx)

Associate the given Context with the current thread. resetComponentContext method should be called to reset the context.

Parameters:

ctx - the context to associate to the current thread.

Returns:

the previous context associated on the thread (can be null)

resetComponentContext

public static void resetComponentContext(Context ctx)

Set back the context with the given value. Don't return the previous context, use setComponentContext() method for this.

Parameters:

ctx - the context to associate to the current thread.

dump

public static void dump(Appendable out,
        String indent)
                 throws IOException

Throws:

IOException