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From Kiran Ayyagari <kayyag...@apache.org>
Subject Re: [ApacheDS] Trigger in ApacheDS
Date Thu, 03 May 2012 18:36:47 GMT
On Thu, May 3, 2012 at 11:55 PM, Juan Pablo Sotelo <juan04sm@gmail.com> wrote:
> Thanks for the replies!.. Now everything is clear. Another question:
>
> How can I download the code? I saw in the old documentation that you had a
> svn repository. I tried the old one, and I couldnt get the code
> (http://svn.apache.org/repos/asf/directory/apacheds/trunk-with-dependencies/
this is the correct location and is configured with svn:externals, you
won't see anything
if you use a browser, do an svn checkout
> apacheds-trunk). Since the latest documentation is not ready in the webpage,
> How can I get the code? SVN? ZIP?
>
> Where can I get the latest documentation?
>
there is no such thing, yet :)
> Thanks again :)
>
>
> On Thu, May 3, 2012 at 1:11 PM, Kiran Ayyagari <kayyagari@apache.org> wrote:
>>
>> On Thu, May 3, 2012 at 8:49 PM, Juan Pablo Sotelo <juan04sm@gmail.com>
>> wrote:
>> > Hello everybody,
>> >
>> >                           sorry for the insistent question,
but I want
>> > to
>> > know if this feature is real (I am talking about triggers), if this
>> > feature
>> > is currently working on the latest version of apacheDS (I read in a
>> > forum
>> > that is not, need confirmation)?. And if you can, give me some advices
>> > about
>> > how to syncrhonize the apacheDS with a DB??
>> >
>> > I really want to use ApacheDS on my company but I need to solve this
>> > "problem". I hope you give me a hand.
>> >
>> the only other better way that I can suggest is to write an implementation
>> of
>> DirectoryListener [1] and add it to DirectoryService by calling
>> dirService.getEventService().addListener().
>>
>> This way you get notified of all the event as soon as they happen
>> matching the provided criteria.
>>
>> Another issue after implementing this is to register this listener,
>> for that you can write a no-op interceptor
>> and use its init() method to register the listener.
>>
>> Another reason I suggest you to use the above said mechanism is
>> interceptors work in a blocking mode
>> where as event listeners process each change in a separate thread
>>
>> And finally, I would strongly suggest to use the latest milestone
>> version 2.0.0-M6, it is way better
>>
>> HTH
>>
>> [1]
>> http://svn.apache.org/repos/asf/directory/apacheds/trunk/core-api/src/main/java/org/apache/directory/server/core/api/event/DirectoryListener.java
>> > Thanks
>> >
>> > OLD Question - unanswered ---------------------------------
>> >
>> > Hello everyone, I need to know about triggers and SPs in ApacheDS in
>> > order
>> > to implement this features at work. I need them in order to create a
>> > trigger
>> > in order to synchronize a table that we have in an Oracle DB. I already
>> > created a trigger in the other way (Oracle to ldap) But I need two ways.
>> >
>> > After reading all the documentation that I found on internet I still
>> > have
>> > doubts about this features.
>> >
>> > 1- It is a posibility to write an interceptor in order to intercept the
>> > add
>> > call (or DELETE OR MODIFY) and trigger an action in java?
>> > 2- In order to add/install our new interceptor:
>> >     a- Build the interceptor and generate a new jar.
>> >     b- Copy the jar file to APACHEDS_INSTALLDIR/lib/ext
>> >     c- ADd the interceptor to the server.xml file in
>> > APACHEDS_INSTALLDIR/conf/, fin the xml elements which list the
>> > interceptors.
>> > The easiest way to add a custom interceptor  is to add a Spring bean
>> > (namespace "s"). You may set configuration properties to the
>> > interceptros as
>> > well, if it supports some.
>> >     <interceptors>
>> >     <normalizationInterceptor/>
>> >     <s:bean
>> >
>> > class=3D"org.apache.directory.samples.interceptor.pwdhash.PasswordHashInter=
>> > ceptor">
>> >     <s:property name=3D"hashAlgorithm" value=3D"MD5" />
>> >     </s:bean>
>> >     <authenticationInterceptor/>
>> >     <referralInterceptor/>
>> >     <aciAuthorizationInterceptor/>
>> >     <defaultAuthorizationInterceptor/>
>> >     <exceptionInterceptor/>
>> >     <operationalAttributeInterceptor/>
>> >     ...
>> >     </interceptors>
>> >
>> > 3- In the documentation (ApacheDS Advanced User Guide v1.5.8-SNAPSHOT) I
>> > read information about triggers and store procedures. The information is
>> > incomplete, and I didnt understand well how to implement the triggers.
>> > In
>> > one part of the trigger section I found this:
>> >
>> > AFTER ADD CALL "Logger.logAddOperation"
>> > ($entry,$attributes,$operationPrincipal);
>> >
>> > or
>> >
>> > AFTER Delete CALL
>> > =93com.example.ldap.util.sp.BackupTools:backupDeletedEntr=
>> > y=94
>> > ( $ldapContext =93ou=3Dbackup,ou=3Dsystem=94, $name, $deletedEntry );
>> >
>> >     a- Where I should add the line in order to create the trigger? DO I
>> > have to add that line in one attribute? Which one and how?
>> >     b- Do I have to follow same steps like to build an interceptor in
>> > order
>> > to build the trigger?
>> >     c- Same with SPs?
>> > 4- Can you provide me a full detail document about triggeres or SPs
>> > (maybe
>> > an example or tutorial with the implementation). Perhaps new
>> > documentation.
>> > I know that there is a new version of APacheDS, but I couldnt find
>> > documentation for this version. In fact the documentation in the Apache
>> > page
>> > is not complete. So this is why I came to you guys:)
>> >
>> > 5- While searching I found this two messages in (
>> >
>> > http://mail-archives.apache.org/mod_mbox/directory-users/201202.mbox/%3CCAD=
>> > wPi+HseKESYBhfJim1crHdsOxOv=3DPQzJ9eHO8h2VwYcLe33w@mail.gmail.com%3E )
>> >     a- " You also write that stored procedures are currently highly
>> > experimental.  Does it mean that the code is partly there, but is not
>> > used?
>> > Are stored  procedures not implemented, yet, or is there another api
>> > that I
>> > can use? Thanks"
>> >     b- "SPs were in fact working a while back but heavy refactoring and
>> > changes in  the server broke the code. Before going forward on this
>> > feature
>> > we're  trying to erect a MVCC layer to handle internal local
>> > transactions
>> > properly  to maintain consistency and isolation across the changes
>> > induced
>> > by the  action of a SP. Furthermore we're redesigning the server to
>> > leverage
>> > OSGi  for plugability and this is will obviously impact how SPs are
>> > deployed.  These changes will take some time but it will be operational
>> > in a
>> > more robust, easy to use and dependable wail."
>> >
>> >   After reading this I have this doubt "SPs and Triggers are currently
>> > working or supported? or is going to be a feature in the next versions?
>> > What
>> > about ApacheDS 1.57 (this is the version that I am using.)??"
>> >
>> > 6- Do you know a better way to synchronize LDAP with an Orable DB in
>> > ApacheDS?.
>> >
>> > 7- I know you told me that I should use persistent search to get the
>> > notifications, but as my point of view this will be an external
>> > solution, am
>> > I wrong?
>> >
>> > Thanks in advance for your time
>> >
>> > OLD Question - unanswered ---------------------------------
>>
>>
>>
>> --
>> Kiran Ayyagari
>
>
>
>
> --
> Sotelo Juan Pablo
>



-- 
Kiran Ayyagari

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