Re: Laszlo client for Keel?

Hi Aleks (and anyone else interested),

I have clarification now that axis webservices are currently unsupported 
in laszlo. however, they will be in v3.0 final:
http://www.laszlosystems.com/developers/community/forums/showthread.php?s=&threadid=1422&highlight=webservice

for the meantime, it is possible to communicate via javarpc, and here i 
also have a clarifying post for you:
http://www.laszlosystems.com/developers/community/forums/showthread.php?s=&threadid=2095

I'll have a look at the latter in approx. 3 weeks.

best,
nils

Aleksandar Vidakovic wrote:

>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
>>>>>
>>>>>     
>>>>>
>>>>>          
>>>>>
>>>http://keelframework.org/documentation.shtml
>>>Keelgroup mailing list
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>>>http://lists.keelframework.com/listinfo.cgi/keelgroup-keelframework.com
>>>
>>> 
>>>
>>>      
>>>
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>>
>>    
>>

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