Re: Laszlo client for Keel?

Thanks Nils!

As soon as I get my builds running I'd like to try this again...

Good luck for your examns!!!

Aleks

On Wed, 2005-02-09 at 23:32 +0100, Nils Döhring wrote:
> Hi,
> 
> let me give you a summary of my efforts.
> 
> The first thing I did is 'fixing' the clnt-axis to enable communication 
> over webservices since this is suggested best practice both in flex and 
> laszlo. clnt-axis has everything needed to run, but unfortunately 
> something in the build system goes wrong since in 
> keel-assemble-client.xml, 'do.axis' is never true. thus i did a 
> workaround by adding the following lines to clnt-axis/build.xml:
> 
>         <copy todir="${project.dir}/webapp/WEB-INF/" verbose="${verbose}">
>             <fileset dir="${keelmodule.clientconf}/axis">
>                 <include name="**/*.wsdl"/>
>                 <include name="server-config.wsdd"/>
>             </fileset>
>         </copy>
> 
> this is the only thing necessary to make clnt-axis work. the keel 
> modelservice is then by default available under 
> localhost/default/services/ModelService?wsdl.
> 
> My next step was to create the modules clnt-laszlo (and clnt-flex), 
> which was pretty easy since the only thing I had to do was to slice the 
> contents of laszlos web.xml into web-servlet.xml and 
> web-servlet-mapping.xml (same with flex, just a few more files). i took 
> clnt-struts as an example.
> 
> Another workaround had to be done with the whole lot of directories and 
> files that come with these clients. If i placed them -as suggested- in 
> conf/client/webapp, they will sooner or later get flattened. problem 
> lies here:
> 
> keel-build/import/keel-build-clnt.xml:
> 
> 88 <copy todir="${project.dir}/temp/conf/client" flatten="true" 
> verbose="${verbose}">
> 
> so, time for another workaround (which also cleans up the somewhat messy 
> laszlo webapp structure).
> 
> 1)
> I created two directories in clnt-laszlo:
> 
> a)
> conf/client/root-lps/ <-- all dirs in here go into the webapp root.
> details:
> conf/client/root-lps/clnt-laszlo <-- here i put the following dirs from 
> laszlo download: demos, docs, examples, lazlo-explorer, my-apps, tools
> cont/client/root-lps/lps <-- this is the 'lps' directory from laszlo 
> download. it has to be in the webapp root ('hardcoded' in laszlo, i 
> asked them)
> 
> b)
> conf/client/webapp-lps <-- all dirs in here go into WEB-INF/lps 
> (logically, this dir contains all dirs from laszlo download web-inf/lps)
> 
> 2) clnt-laszlo/build.xml:
> 
> <project name="clnt-laszlo" default="Usage" basedir=".">
> 
>     <property name="keelmodule.name" value="${ant.project.name}"/>
>     <property name="keelmodule" value="${keel.dist}/${keelmodule.name}"/>
>    
>     <import file="${keel.dist}/keel-build/import/keel-build-clnt.xml"/>
> 
>     <copy todir="${project.dir}/webapp/WEB-INF/lps" flatten="false" 
> verbose="${verbose}">
>             <fileset dir="${keelmodule.clientconf}/webapp-lps">
>                 <include name="**/*"/>
>             </fileset>
>         </copy>
>        
>         <copy todir="${project.dir}/webapp/lps" flatten="false" 
> verbose="${verbose}">
>             <fileset dir="${keelmodule.clientconf}/root-lps/lps">
>                 <include name="**/*"/>
>             </fileset>
>         </copy>
>        
>         <copy todir="${project.dir}/webapp/clnt-laszlo" flatten="false" 
> verbose="${verbose}">
>             <fileset dir="${keelmodule.clientconf}/root-lps/clnt-laszlo">
>                 <include name="**/*"/>
>             </fileset>
>         </copy>
> </project>
> 
> this if everything needed to get a working laszlo client. (I didn't test 
> all the lazlo samples, I think there are some problems with links, but 
> the system works)
> 
> then the fun part started. while I had absolutely no problems invoking 
> the webservice via flex (send/receive data), laszlo was making problems 
> here.
> I've been fiddling aroung with laszlo-keel communication in whole 
> december and january and have more or less given up since I didn't find 
> the time to step deeply into axis webservices.
> 
> what I've found out is that laszlo currenty neither supports sequences 
> nor 'anyType's and I would suggest to look into the laszlo documentation 
> and model a custom LaszloModelService that is similar to the amazon or 
> google webservices, since these are working with laszlo. see these:
> 
> http://www.laszlosystems.com/lps-2.2/docs/reference/    --> RPC/soap, 
> RPC/rpc, RPC/remotecall
> and
> http://www.laszlosystems.com/lps-2.2/docs/guide/rpc-soap.html (list of 
> unsupported stuff at the end)
> and here you can find what i posted on laszlo forums:
> http://www.laszlosystems.com/developers/community/forums/search.php?s=&action=finduser&userid=2913
> 
> afaik, the docs still account for lps3. i tried both lps 2.2 and 3.0b1.
> 
> i can give two more tips:
> 1)
> if you get an error:
> error: «string#0| XSD_ANYSIMPLETYPE : Exception stack: 
> java.lang.NoSuchFieldError: XSD_ANYSIMPLETYPE at 
> com.laszlosystems.remote.soap.LZDefaultTypeMapping.<init>(LZDefaultTypeMapping.java:115)
> 
> you should check if your axis.jar is the same that comes with laszlo (it 
> was copied over with an older version in my case)
> 
> 2)
> you can enable a 'special' laszlo logger that really helps:
> in web-inf/lps/config/lps.xml, add:
>         <logger name="httpclient.wire" additivity="false">
>             <priority value="debug" />
>             <appender-ref ref="lps" />
>         </logger>
> 
> the logfile can be found at web-inf/lps/work/logs
> 
> 
> While I appreciate the sudden attention of my attempts, you guys 
> couldn't have chosen a more unmatching timeslot since I am in 
> preparation for my exams :-/ I will follow the ongoing discussion and 
> will try to make my brain remember as much as possible when it comes to 
> question, but more is not possible at the moment. If some of the above 
> explanations are unclear, I would be happy to attach a zipped 
> clnt-laszlo dir structure (EMPTY OF COURSE!) and the few files I've been 
> playing around with.
> 
> While doing the above I ran into two things that I found somehow not 
> well solved:
> 
> why is ALL the build config stuff merged in keel-build? wouldnt it be 
> more tidy to put those 'special' build commands that are required by 
> clnt-axis, clnt-laszlo, clnt-struts, etc into the build.xml's in their 
> respective dir? (prolly the question comes too late with the maven 
> switch at the doors)
> 
> when i changed the modelservice class in clnt-axis (and that happened 
> OFTEN!), i had to rebuild the whole project. isn't it possible to do 
> just a "ant build clnt-axis" or so?
> 
> i hope this wasn't too confusing, my brain hurts since days... :)
> 
> ahoj,
> nils
> 
> ps: don't even think about trying to use laszlo javarpc, its even more 
> of a nightmare!!
> 
> 
> 
> Michael Nash wrote:
> 
> >Aleks:
> >
> >Thanks for your reply - yes, I see looking at the archives that Nils was
> >giving it a try. 
> >
> >Nils, anything we can do to help that effort along?
> >
> >Mike
> >
> >
> >On Tue, 2005-02-08 at 15:19, Aleksandar Vidakovic wrote:
> >  
> >
> >>Salut Mike,
> >>
> >>unfortunately I had to freeze my efforts for a while (time ;-), but I
> >>remember some mails not too long ago from another german developer who
> >>seemed to have something usable. As far as I remember his name was Nils
> >>Döhring...
> >>
> >>Hope this helps,
> >>
> >>Aleks
> >>
> >>P.S.: ... if there remains something to do with clnt-laszlo I would be
> >>happy to help ;-)
> >>
> >>On Tue, 2005-02-08 at 13:31 -0500, Michael Nash wrote:
> >>    
> >>
> >>>Aleks:
> >>> 
> >>>I seem to recall you were working on a Laszlo client for Keel? Can you
> >>>let me know how that is going when you get a change? I have a client
> >>>whose seen the Laszlo demos and was very impressed, they'd like to see
> >>>how it might integrate with a back-end system.
> >>> 
> >>>Thanks!
> >>> 
> >>>Mike
> >>>
> >>>http://keelframework.org/documentation.shtml
> >>>Keelgroup mailing list
> >>>[email protected]
> >>>http://lists.keelframework.com/listinfo.cgi/keelgroup-keelframework.com
> >>>
> >>>      
> >>>
> >
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> >
> >  
> >
> 
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-- 
Aleksandar Vidakovic <[email protected]>

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