org.apache.avalon.excalibur.naming
Class AbstractContext

java.lang.Object
  |
  +--org.apache.avalon.excalibur.naming.AbstractContext

All Implemented Interfaces:

javax.naming.Context

Direct Known Subclasses:

AbstractLocalContext, AbstractURLContext, RemoteContext

public abstract class AbstractContext

extends java.lang.Object

implements javax.naming.Context

Abstract JNDI Context that can be inherited from to provide a particular type of Context.

Version:

$Revision: 1.2 $

Author:

Peter Donald

Field Summary

protected java.util.Hashtable

m_environment

Fields inherited from interface javax.naming.Context

APPLET, AUTHORITATIVE, BATCHSIZE, DNS_URL, INITIAL_CONTEXT_FACTORY, LANGUAGE, OBJECT_FACTORIES, PROVIDER_URL, REFERRAL, SECURITY_AUTHENTICATION, SECURITY_CREDENTIALS, SECURITY_PRINCIPAL, SECURITY_PROTOCOL, STATE_FACTORIES, URL_PKG_PREFIXES

Constructor Summary

AbstractContext()

AbstractContext(java.util.Hashtable environment)

Method Summary

java.lang.Object	addToEnvironment(java.lang.String key, java.lang.Object value) Add a key-value pair to environment
void	bind(javax.naming.Name name, java.lang.Object object) Bind an object to a name.
protected abstract void	bind(javax.naming.Name name, java.lang.Object object, boolean rebind) Helper method to bind
void	bind(java.lang.String name, java.lang.Object object) Bind an object to a name.
void	close() Release resources associated with context.
javax.naming.Name	composeName(javax.naming.Name name, javax.naming.Name prefix) Compose a name form a name and a prefix.
java.lang.String	composeName(java.lang.String name, java.lang.String prefix) Compose a name form a name and a prefix.
javax.naming.Context	createSubcontext(java.lang.String name) Create a Subcontext.
void	destroySubcontext(java.lang.String name) Destroy a Subcontext.
java.util.Hashtable	getEnvironment() Return a copy of environment.
protected javax.naming.Name	getLeafName(javax.naming.Name name) Get leaf name component from specified Name object.
protected abstract javax.naming.NameParser	getNameParser()
javax.naming.NameParser	getNameParser(javax.naming.Name name) Get the NameParser for the named context.
javax.naming.NameParser	getNameParser(java.lang.String name) Get the NameParser for the named context.
protected javax.naming.Name	getPathName(javax.naming.Name name) Get name components minus leaf name component.
protected boolean	isSelf(javax.naming.Name name)
javax.naming.NamingEnumeration	list(java.lang.String name) Enumerates the names bound in the named context, along with the objects bound to them.
javax.naming.NamingEnumeration	listBindings(java.lang.String name) Enumerates the names bound in the named context, along with the objects bound to them.
java.lang.Object	lookup(java.lang.String name) Get the object named.
java.lang.Object	lookupLink(javax.naming.Name name) Get the object named following all links.
java.lang.Object	lookupLink(java.lang.String name) Get the object named following all links.
void	rebind(javax.naming.Name name, java.lang.Object object) Binds a name to an object, overwriting any existing binding.
void	rebind(java.lang.String name, java.lang.Object object) Binds a name to an object, overwriting any existing binding.
java.lang.Object	removeFromEnvironment(java.lang.String key) Remove a key-value pair form environment and return it.
void	rename(javax.naming.Name oldName, javax.naming.Name newName)
void	rename(java.lang.String oldName, java.lang.String newName) Rename a already bound object
void	unbind(java.lang.String name) Unbind a object from a name.

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.naming.Context

createSubcontext, destroySubcontext, getNameInNamespace, list, listBindings, lookup, unbind

Field Detail

m_environment

protected java.util.Hashtable m_environment

Constructor Detail

AbstractContext

public AbstractContext()

AbstractContext

public AbstractContext(java.util.Hashtable environment)

Method Detail

getNameParser

protected abstract javax.naming.NameParser getNameParser()
                                                  throws javax.naming.NamingException

addToEnvironment

public java.lang.Object addToEnvironment(java.lang.String key,
                                         java.lang.Object value)
                                  throws javax.naming.NamingException

Add a key-value pair to environment

Specified by:

addToEnvironment in interface javax.naming.Context

Parameters:

key - the key

value - the value

Returns:

the value

close

public void close()

Release resources associated with context.

Specified by:

close in interface javax.naming.Context

isSelf

protected boolean isSelf(javax.naming.Name name)

bind

public void bind(java.lang.String name,
                 java.lang.Object object)
          throws javax.naming.NamingException

Bind an object to a name.

Specified by:

bind in interface javax.naming.Context

Parameters:

name - the name to bind to

object - the object

Throws:

javax.naming.NamingException - if an error occurs such as bad name or invalid binding

bind

public void bind(javax.naming.Name name,
                 java.lang.Object object)
          throws javax.naming.NamingException

Bind an object to a name.

Specified by:

bind in interface javax.naming.Context

Parameters:

name - the name to bind to

object - the object

Throws:

javax.naming.NamingException - if an error occurs such as bad name or invalid binding

bind

protected abstract void bind(javax.naming.Name name,
                             java.lang.Object object,
                             boolean rebind)
                      throws javax.naming.NamingException

Helper method to bind

composeName

public java.lang.String composeName(java.lang.String name,
                                    java.lang.String prefix)
                             throws javax.naming.NamingException

Compose a name form a name and a prefix.

Specified by:

composeName in interface javax.naming.Context

Parameters:

name - the name

prefix - the prefix

Returns:

the composed name

Throws:

javax.naming.NamingException - if a badly formatted name for context

composeName

public javax.naming.Name composeName(javax.naming.Name name,
                                     javax.naming.Name prefix)
                              throws javax.naming.NamingException

Compose a name form a name and a prefix.

Specified by:

composeName in interface javax.naming.Context

Parameters:

name - the name

prefix - the prefix

Returns:

the composed name

Throws:

javax.naming.NamingException - if a badly formatted name for context

createSubcontext

public javax.naming.Context createSubcontext(java.lang.String name)
                                      throws javax.naming.NamingException

Create a Subcontext.

Specified by:

createSubcontext in interface javax.naming.Context

Parameters:

name - the name of subcontext

Returns:

the created context

Throws:

javax.naming.NamingException - if an error occurs (ie context exists, badly formated name etc)

destroySubcontext

public void destroySubcontext(java.lang.String name)
                       throws javax.naming.NamingException

Destroy a Subcontext.

Specified by:

destroySubcontext in interface javax.naming.Context

Parameters:

name - the name of subcontext to destroy

Throws:

javax.naming.NamingException - if an error occurs such as malformed name or context not exiting or not empty

getEnvironment

public java.util.Hashtable getEnvironment()
                                   throws javax.naming.NamingException

Return a copy of environment.

Specified by:

getEnvironment in interface javax.naming.Context

Returns:

the environment

getNameParser

public javax.naming.NameParser getNameParser(java.lang.String name)
                                      throws javax.naming.NamingException

Get the NameParser for the named context.

Specified by:

getNameParser in interface javax.naming.Context

Parameters:

name -

Returns:

the NameParser

Throws:

javax.naming.NamingException - if an error occurs

getNameParser

public javax.naming.NameParser getNameParser(javax.naming.Name name)
                                      throws javax.naming.NamingException

Get the NameParser for the named context.

Specified by:

getNameParser in interface javax.naming.Context

Parameters:

name -

Returns:

the NameParser

Throws:

javax.naming.NamingException - if an error occurs

list

public javax.naming.NamingEnumeration list(java.lang.String name)
                                    throws javax.naming.NamingException

Enumerates the names bound in the named context, along with the objects bound to them.

Specified by:

list in interface javax.naming.Context

Parameters:

name - the name of the context

Returns:

the enumeration

Throws:

javax.naming.NamingException - if an error occurs

listBindings

public javax.naming.NamingEnumeration listBindings(java.lang.String name)
                                            throws javax.naming.NamingException

Enumerates the names bound in the named context, along with the objects bound to them.

Specified by:

listBindings in interface javax.naming.Context

Parameters:

name - the name of the context

Returns:

the enumeration

Throws:

javax.naming.NamingException - if an error occurs

lookup

public java.lang.Object lookup(java.lang.String name)
                        throws javax.naming.NamingException

Get the object named.

Specified by:

lookup in interface javax.naming.Context

Parameters:

name - the name

Returns:

the object

Throws:

javax.naming.NamingException - if an error occurs (ie object name is inavlid or unbound)

lookupLink

public java.lang.Object lookupLink(java.lang.String name)
                            throws javax.naming.NamingException

Get the object named following all links.

Specified by:

lookupLink in interface javax.naming.Context

Parameters:

name - the name

Returns:

the object

Throws:

javax.naming.NamingException - if an error occurs (ie object name is inavlid or unbound)

lookupLink

public java.lang.Object lookupLink(javax.naming.Name name)
                            throws javax.naming.NamingException

Get the object named following all links.

Specified by:

lookupLink in interface javax.naming.Context

Parameters:

name - the name

Returns:

the object

Throws:

javax.naming.NamingException - if an error occurs (ie object name is inavlid or unbound)

rebind

public void rebind(java.lang.String name,
                   java.lang.Object object)
            throws javax.naming.NamingException

Binds a name to an object, overwriting any existing binding.

Specified by:

rebind in interface javax.naming.Context

Parameters:

name - the name

object - the object

Throws:

javax.naming.NamingException - if an error occurs

rebind

public void rebind(javax.naming.Name name,
                   java.lang.Object object)
            throws javax.naming.NamingException

Binds a name to an object, overwriting any existing binding.

Specified by:

rebind in interface javax.naming.Context

Parameters:

name - the name

object - the object

Throws:

javax.naming.NamingException - if an error occurs

removeFromEnvironment

public java.lang.Object removeFromEnvironment(java.lang.String key)
                                       throws javax.naming.NamingException

Remove a key-value pair form environment and return it.

Specified by:

removeFromEnvironment in interface javax.naming.Context

Parameters:

key - the key

Returns:

the value

rename

public void rename(java.lang.String oldName,
                   java.lang.String newName)
            throws javax.naming.NamingException

Rename a already bound object

Specified by:

rename in interface javax.naming.Context

Parameters:

oldName - the old name

newName - the new name

Throws:

javax.naming.NamingException - if an error occurs

rename

public void rename(javax.naming.Name oldName,
                   javax.naming.Name newName)
            throws javax.naming.NamingException

Specified by:

rename in interface javax.naming.Context

unbind

public void unbind(java.lang.String name)
            throws javax.naming.NamingException

Unbind a object from a name.

Specified by:

unbind in interface javax.naming.Context

Parameters:

name - the name

Throws:

javax.naming.NamingException - if an error occurs

getPathName

protected javax.naming.Name getPathName(javax.naming.Name name)
                                 throws javax.naming.NamingException

Get name components minus leaf name component.

Parameters:

name - the name elements leading up to last element

Returns:

the name

Throws:

javax.naming.NamingException - if an error occurs

getLeafName

protected javax.naming.Name getLeafName(javax.naming.Name name)
                                 throws javax.naming.NamingException

Get leaf name component from specified Name object.

Parameters:

name - a value of type 'Name'

Returns:

a value of type 'Name'

Throws:

javax.naming.NamingException - if an error occurs