org.springframework.mock.jndi
Class SimpleNamingContextBuilder

java.lang.Object
  org.springframework.mock.jndi.SimpleNamingContextBuilder

All Implemented Interfaces:

InitialContextFactoryBuilder

public class SimpleNamingContextBuilder
extends Object
implements InitialContextFactoryBuilder

Simple implementation of a JNDI naming context builder.

Mainly targeted at test environments, where each test case can configure JNDI appropriately, so that new InitialContext() will expose the required objects. Also usable for standalone applications, e.g. for binding a JDBC DataSource to a well-known JNDI location, to be able to use traditional J2EE data access code outside of a J2EE container.

There are various choices for DataSource implementations:

• SingleConnectionDataSource (using the same Connection for all getConnection calls);
• DriverManagerDataSource (creating a new Connection on each getConnection call);
• Apache's Jakarta Commons DBCP offers BasicDataSource (a real pool).

Typical usage in bootstrap code:

 SimpleNamingContextBuilder builder = new SimpleNamingContextBuilder();
 DataSource ds = new DriverManagerDataSource(...);
 builder.bind("java:comp/env/jdbc/myds", ds);
 builder.activate();

Note that it's impossible to activate multiple builders within the same JVM, due to JNDI restrictions. Thus to configure a fresh builder repeatedly, use the following code to get a reference to either an already activated builder or a newly activated one:

 SimpleNamingContextBuilder builder = SimpleNamingContextBuilder.emptyActivatedContextBuilder();
 DataSource ds = new DriverManagerDataSource(...);
 builder.bind("java:comp/env/jdbc/myds", ds);

Note that you should not call activate() on a builder from this factory method, as there will already be an activated one in any case.

An instance of this class is only necessary at setup time. An application does not need to keep a reference to it after activation.

Author:

Juergen Hoeller, Rod Johnson

See Also:

emptyActivatedContextBuilder(), bind(String, Object), activate(), SimpleNamingContext, SingleConnectionDataSource, DriverManagerDataSource, BasicDataSource

Constructor Summary

SimpleNamingContextBuilder()

Method Summary

void	activate() Register the context builder by registering it with the JNDI NamingManager.
void	bind(String name, Object obj) Bind the given object under the given name, for all naming contexts that this context builder will generate.
void	clear() Clear all bindings in this context builder, while keeping it active.
InitialContextFactory	createInitialContextFactory(Hashtable environment) Simple InitialContextFactoryBuilder implementation, creating a new SimpleNamingContext instance.
void	deactivate() Temporarily deactivate this context builder.
static SimpleNamingContextBuilder	emptyActivatedContextBuilder() If no SimpleNamingContextBuilder is already configuring JNDI, create and activate one.
static SimpleNamingContextBuilder	getCurrentContextBuilder() Checks if a SimpleNamingContextBuilder is active.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleNamingContextBuilder

public SimpleNamingContextBuilder()

Method Detail

getCurrentContextBuilder

public static SimpleNamingContextBuilder getCurrentContextBuilder()

Checks if a SimpleNamingContextBuilder is active.

Returns:

the current SimpleNamingContextBuilder instance, or null if none

emptyActivatedContextBuilder

public static SimpleNamingContextBuilder emptyActivatedContextBuilder()
                                                               throws NamingException

If no SimpleNamingContextBuilder is already configuring JNDI, create and activate one. Otherwise take the existing activate SimpleNamingContextBuilder, clear it and return it.

This is mainly intended for test suites that want to reinitialize JNDI bindings from scratch repeatedly.

Returns:

an empty SimpleNamingContextBuilder that can be used to control JNDI bindings

Throws:

NamingException

activate

public void activate()
              throws IllegalStateException,
                     NamingException

Register the context builder by registering it with the JNDI NamingManager. Note that once this has been done, new InitialContext() will always return a context from this factory. Use the emptyActivatedContextBuilder() static method to get an empty context (for example, in test methods).

Throws:

IllegalStateException - if there's already a naming context builder registered with the JNDI NamingManager

NamingException

deactivate

public void deactivate()

Temporarily deactivate this context builder. It will remain registered with the JNDI NamingManager but will delegate to the standard JNDI InitialContextFactory (if configured) instead of exposing its own bound objects.

Call activate() again in order to expose this contexz builder's own bound objects again. Such activate/deactivate sequences can be applied any number of times (e.g. within a larger integration test suite running in the same VM).

See Also:

activate()

clear

public void clear()

Clear all bindings in this context builder, while keeping it active.

bind

public void bind(String name,
                 Object obj)

Bind the given object under the given name, for all naming contexts that this context builder will generate.

Parameters:

name - the JNDI name of the object (e.g. "java:comp/env/jdbc/myds")

obj - the object to bind (e.g. a DataSource implementation)

createInitialContextFactory

public InitialContextFactory createInitialContextFactory(Hashtable environment)

Simple InitialContextFactoryBuilder implementation, creating a new SimpleNamingContext instance.

Specified by:

createInitialContextFactory in interface InitialContextFactoryBuilder

See Also:

SimpleNamingContext