org.springframework.ldap.control
Class AbstractRequestControlDirContextProcessor

java.lang.Object
  org.springframework.ldap.control.AbstractRequestControlDirContextProcessor

All Implemented Interfaces:

DirContextProcessor

Direct Known Subclasses:

PagedResultsRequestControl, SortControlDirContextProcessor

public abstract class AbstractRequestControlDirContextProcessor
extends Object
implements DirContextProcessor

Abstract superclass with responsibility to apply a single RequestControl on an LdapContext, preserving any existing controls. Subclasses should implement DirContextProcessor.postProcess(DirContext) and template method createRequestControl().

Author:

Mattias Arthursson, Ulrik Sandberg

Field Summary

protected org.apache.commons.logging.Log

log

Constructor Summary

AbstractRequestControlDirContextProcessor()

Method Summary

abstract Control	createRequestControl() Create an instance of the appropriate RequestControl.
void	preProcess(DirContext ctx) Get the existing RequestControls from the LdapContext, call createRequestControl() to get a new instance, build a new array of Controls and set it on the LdapContext.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.ldap.core.DirContextProcessor

postProcess

Field Detail

log

protected org.apache.commons.logging.Log log

Constructor Detail

AbstractRequestControlDirContextProcessor

public AbstractRequestControlDirContextProcessor()

Method Detail

preProcess

public void preProcess(DirContext ctx)
                throws NamingException

Get the existing RequestControls from the LdapContext, call createRequestControl() to get a new instance, build a new array of Controls and set it on the LdapContext.

The Control feature is specific for LDAP v3 and thus applies only to LdapContext. However, the generic DirContextProcessor mechanism used for calling preProcess and postProcess uses DirContext, since it also works for LDAP v2. This is the reason that DirContext has to be cast to a LdapContext.

Specified by:

preProcess in interface DirContextProcessor

Parameters:

ctx - an LdapContext instance.

Throws:

NamingException

IllegalArgumentException - if the supplied DirContext is not an LdapContext.

createRequestControl

public abstract Control createRequestControl()

Create an instance of the appropriate RequestControl.

Returns:

the new instance.