code samples for xml output to form in Livelink

Hi,I am trying to implement AJAX functionality in my application.I have a request handler (no login required). The request handler will get the details from the Livelink database and return to the form in XML. Please let me know if you have any code samples so that I can give it a try. Thanks,Mahesh

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sıɹɥɔ

Message from Chris Webster <cwebster@opentext.com> via eLink

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">eLink

Hi Mahesh,

If you've ever written request handlers for Livelink then you'll find that writing a handler for an AJAX request is simple. It's easier than generating the normal HTML response since you don't need to generate output that fits into the Livelink page component structure.

You mentioned you have a request handler that has "no login required". I'm not exactly sure what you mean by this, but AJAX requests should still be authenticated. You still continue to orphan WEBLL's LLRequestHandler object to make an AJAX request handler. The only thing different you would change in your orphan is the fHTMLMimeType feature. Your weblingo file then consists of XML elements with values and content defined by oscript in the usual way.

Hope this helps,

-chris

From: eLink Discussion: Development Discussion [mailto:development@elinkkc.opentext.com]
Sent: Monday, May 04, 2009 3:02 PM
To: eLink Recipient
Subject: code samples for xml output to form in Livelink

code samples for xml output to form in Livelink

Posted by mpinnamaneni@dcwasa.com (Pinnamaneni, Mahesh) on 2009/05/04 15:58

Hi,
I am trying to implement AJAX functionality in my application.

I have a request handler (no login required). The request handler will get the details from the Livelink database and return to the form in XML. Please let me know if you have any code samples so that I can give it a try.

Thanks,
Mahesh

Mahesh_Pinnamaneni

Thanks for the response.I am actually want to implement a functionality some thing like..if I type anything in the text box, it should show a drop down with list of values ( something like when we type email address in yahoo or gmail it will search in contacts and display the matching names).I am sure that we don't have to use weblingo and that is the reason I have orphaned the WEBLL request handler ( I believe this request handler will not redirect to Livelink login page when accessed).Please advice how can I achieve this..Thanks,Mahesh

Chris_Bowman_(spawaruser1_-_(deleted))

Message from Chris Bowman <cbowman@spawarpens.navy.mil> via eLink

eLink

An important reasonfor using the WEBLL:LLRequestHandler is the connection to the database. Ifusing the WEBDSP:WEBDSP Root:RequestHandler you must create this connectionusing a username/password that has access to the database. Anotherimportant thing to remember, if you do use the loginless requesthandler youmust explicitly terminate the database connection. Using theLLRequestHandler is the preferred and desirable method; after all won’tthe user be logged into Livelink already?

Chris Bowman

SPAWAR Atlantic

Global Business Systems & Services

Code 5.4.2.1, IT Specialist

130 West Ave, Suite D

Pensacola, FL 32508

850.452.7684

Cell: 850.776.9353

-----Original Message-----
From: eLink Discussion:Development Discussion [mailto:development@elinkkc.opentext.com]
Sent: Tuesday, May 05, 2009 3:49 PM
To: eLink Recipient
Subject: Thanks for the response.

Thanks for the response.		Posted by mpinnamaneni@dcwasa.com (Pinnamaneni, Mahesh) on 2009/05/05 16:45
In reply to: RE code samples for xml output to form in Livelink		Posted by cwebster (Webster, Chris) on 2009/05/04 17:09

Thanks for the response.
I am actually want to implement a functionality some thing like..if I type anything in the text box, it should show a drop down with list of values ( something like when we type email address in yahoo or gmail it will search in contacts and display the matching names).

I am sure that we don't have to use weblingo and that is the reason I have orphaned the WEBLL request handler ( I believe this request handler will not redirect to Livelink login page when accessed).

Please advice how can I achieve this..

Thanks,
Mahesh

sıɹɥɔ

Message from Chris Webster <cwebster@opentext.com> via eLink

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">eLink

All request handlers use weblingo, or at least by default will use it to generate their output. Look at the GenerateOutput() script to see the logic (e.g. checks of the features: .fError, .fDownloadFile, .fLocation, etc.) If you're not using a weblingo file, then how do you plan to send a response? I'd think you would want to make a weblingo file with your xml template and populate it from values produced in your object. Weblingo does not need to be html.

(And of course AJAX does not need to be XML either.)

It may help if you'd define the needs of your AJAX client, and only then considered how to produce the output from Livelink that your design uses.

Hope this helps,

-chris

From: eLink Discussion: Development Discussion [mailto:development@elinkkc.opentext.com]
Sent: Tuesday, May 05, 2009 3:49 PM
To: eLink Recipient
Subject: Thanks for the response.

Thanks for the response.		Posted by mpinnamaneni@dcwasa.com (Pinnamaneni, Mahesh) on 2009/05/05 16:45
In reply to: RE code samples for xml output to form in Livelink		Posted by cwebster (Webster, Chris) on 2009/05/04 17:09

Thanks for the response.
I am actually want to implement a functionality some thing like..if I type anything in the text box, it should show a drop down with list of values ( something like when we type email address in yahoo or gmail it will search in contacts and display the matching names).

I am sure that we don't have to use weblingo and that is the reason I have orphaned the WEBLL request handler ( I believe this request handler will not redirect to Livelink login page when accessed).

Please advice how can I achieve this..

Thanks,
Mahesh

Mahesh_Pinnamaneni

As per my previous response, I have a request hadler which I am going to use it for creating folders in Livelink. In this RH the users enter different information. I want to make use of AJAX technology on one of the field that when the user type in the department name field it should query the depts table and get the list of matching ones that was entered in the text field. i can create a RH from WEBLL and can have DB connection to get the list of depts that matches the letters entered in the dept name field but my question is how can I return the list to the form and show it in the text field as drop down..hope this helps..

Carsten_Kulms

Message from Carsten Kulms via eLink(1) From a security point of view the unauthenticated RequestHandlershould be considered as a non-public, not-to-be-used object.This is especially important if potentially sensitive operations whichreveal internal data are done in a RequestHandler.(2) There is nothing wrong with WebLingo. The technique behind is verysimilar to JSP where the JSP page is compiled to a Servlet by theengine.Using WebLingo can even show better performance than writing the outputmanually, at least it is easier to maintain.(3) If you really want to write the output on your own ... this can bedone writing directly to the "ctxOut". (Examples may be found by asearch in LLBuilder for scripts containing "Web.Write")Some assistance with producing correct XML over the socket stream isprovided by an XMLWriter object which can be retrieved by$XML.XMLUtil.GetWriter(You can find an example in the WiKi::AuotSave RequestHandler; possiblyalso in other modules.)(4) Be cautious in the implementation of the database lookup. E.g. do nouse simple string concatenation to build the SQL statement -- such wouldopen your system to SQL injection attacks.

Mahesh_Pinnamaneni

Thank you very much for your suggestion. I could not able to access the WIKI module in KC. Looks like we need to buy this module.could you please post any code snippet so that I can start work?Thanks,Mahesh

Carsten_Kulms

Message from Carsten Kulms via eLinkA very short example in core how to write a response directly (noWebLingo) can be found in WEBLL::UpdateViewType; important is the line.fhtmlFile = undefinedUsage of XMLWriter in the mentioned request handler basically looks like> -----Original Message-----> From: eLink Discussion: Development Discussion > [mailto:development@elinkkc.opentext.com] > Sent: Wednesday, May 06, 2009 2:46 PM> To: eLink Recipient> Subject: Thank you very much for your suggestion. I could not > able to access the WIKI...> > Thank you very much for your suggestion. I could not able to > access the WIKI... > 96021> Posted by mpinnamaneni@dcwasa.com > (Pinnamaneni, Mahesh) on 2009/05/06 08:43 > In reply to: RE As per my previous response, I have a request > hadler which I am going to use it... > 82339> Posted by ckulms > (Kulms, Carsten) on > 2009/05/06 03:58 > > Thank you very much for your suggestion. I could not able to > access the WIKI module in KC. Looks like we need to buy this module.> > could you please post any code snippet so that I can start work?> > Thanks,> Mahesh > ________________________________> > [To reply to this thread, use your normal E-mail reply function.] > Topic: code samples for xml output to form in Livelink > 87691> > Discussion: Development Discussion > > Livelink Server: knowledge-wlweb01 > > > To Unsubscribe from this Discussion, send an e-mail to > unsubscribe.development@elinkkc.opentext.com > nsubscribe> . >

Carsten_Kulms

Message from Carsten Kulms via eLinkups ... the last reply went out too early ...A very short example in core how to write a response directly (noWebLingo) can be found in WEBLL::UpdateViewType; important is the line.fhtmlFile = undefinedUsage of XMLWriter in the mentioned request handler basically looks like function Dynamic Execute( Dynamic ctxIn, Dynamic ctxOut, Record r ) Object prgCtx = .fPrgCtx if ( IsDefined( .fExtraHeaders ) && .fExtraHeaders != '' ) String s = Str.Trim(.fExtraHeaders) + Web.CRLF Web.Write( ctxOut, s ) end Dynamic results = $Xml.XmlExport.GetWriter(ctxOut) if ( results.OK ) Object xmlWriter = results.Writer xmlWriter.WriteXMLDeclaration(); xmlWriter.StartElement(.fRootTag); // xmlWriter.WriteElement('OK',Str.ValueToString(existsAlready)); xmlWriter.EndElement(); // ajax-response xmlWriter.Delete() end .fHTMLFile = Undefinedend

Mahesh_Pinnamaneni

Got it.Thanks...