Re: [C3] Calling another from REST resource

Andre Juffer <[email protected]> Mon, 26 Aug 2013 19:52:27 +0000
Newsgroups	gmane.text.xml.cocoon.user
Message-ID	<[email protected]>
On 08/26/2013 12:39 PM, Javier Puerto wrote:



2013/8/26 Andre Juffer <[email protected]<mailto:[email protected]>>



------------------------------------------------------------------------------------------------------------------------------
Andre H. Juffer
Biocenter Oulu and Department of Biochemistry
University of Oulu, Finland
Phone: +358-294-481161<tel:%2B358-294-481161>
Email: [email protected]<mailto:[email protected]>
WWW:
  www.biochem.oulu.fi/Biocomputing/<http://www.biochem.oulu.fi/Biocomputing/>
  www.oulu.fi/biocenter/biocomputing-and-bioinformatics<http://www.oulu.fi/biocenter/biocomputing-and-bioinformatics>
  www.oulu.fi/biocenter/groups/juffer<http://www.oulu.fi/biocenter/groups/juffer>

StrucBioCat, www.strucbiocat.oulu.fi<http://www.strucbiocat.oulu.fi>
Triacle Biocomputing, www.triacle-bc.com<http://www.triacle-bc.com>

________________________________
From: Javier Puerto [[email protected]<mailto:[email protected]>]
Sent: Monday, August 26, 2013 12:04 PM

To: [email protected]<mailto:[email protected]>
Subject: Re: [C3] Calling another from REST resource




2013/8/26 Andre Juffer <[email protected]<mailto:[email protected]>>
I am working on using the Java pipe. So far so so good.  I have two issues:

1. I intend to use a TextSerializer in the final step as I need just a single String returned from the other block, but I cannot find the org.apache.cocoon.sax.component.TextSerializer:

http://cocoon.apache.org/3.0/apidocs/org/apache/cocoon/sax/component/TextSerializer.html

It extends org.apache.cocoon.sax.component.XMLSerializer. All other classes are fine (Pipeline, SAXPipelineComponent, etc). Is there an extra dependency required. If so, which one?

TextSerializer class is in "cocoon-sax" project, the spring declaration is available at "cocoon-sitemap" project in file "cocoon-sitemap/src/main/resources/META-INF/cocoon/spring/cocoon-pipeline-component.xml". You only need these two projects as dependencies.

OK, thanks. I will have a look.

As far as I can see, the TextSerializer does exist in trunk, but not in cocoon-sax-3.0.0-alpha-3

In any case, I got it working, as the response of the other blog is very simple (like <element>someValue</element, no big deal).




2. Also, the example of a VideoController contains the line:

return new Page("servlet:/screen/video", data);

In which package is Page located? I just cannot find it.

I can't see the fragment code you shown and neither the Page class. Where did you get the example?
Anyway, seems like you are trying to create a controller.

That is correct.


You can check the samples to check what kind of object is expected from the controller because probably the Page class inherits from another object.

I am referring to

http://cocoon.apache.org/3.0/features.html

There is an example towards the end.

I see now, seems like you have found a bug in the documentation and needs to be updated. The Page object must implement the interface RestResponse that you can see in the "cocoon-rest" project. I've checked the source and we have some base implementation in the same package, "org.apache.cocoon.rest.response". You can choose a base implementation, extends or implements your own according to your needs. See:

http://svn.apache.org/repos/asf/cocoon/cocoon3/trunk/cocoon-rest/src/main/java/org/apache/cocoon/rest/controller/response/




Thanks,
André



On 08/19/2013 12:19 PM, Thorsten Scherler wrote:
On 08/19/2013 10:58 AM, Andre Juffer wrote:
Hi Thorsten,

I already thought that it would down to what you suggested. Seems to me that calling a pipeline in the way you suggested is the most logical way, as the other block has everything in place to receive requests for accounts, given the hash. I will give it a try.

Another possibility would be to create a java pipe. See e.g. for an usage see
cocoon-rest-optional/src/main/java/org/apache/cocoon/rest/optional/sample/SendMailPipeService.java
and
cocoon-rest-optional/src/main/java/org/apache/cocoon/rest/optional/mail/pipelines/pipes/EmailPlainPipe.java

This gives you a broader possibility. For example in one project I extended the pipeline interface to work with a hashmap and I injected the values via the pipe. This way I did not need to bother with the stream but directly could access the values I needed in the pipeline.

salu2


Best,
André




------------------------------------------------------------------------------------------------------------------------------
Andre H. Juffer
Biocenter Oulu and Department of Biochemistry
University of Oulu, Finland
Phone: +358-294-481161<tel:%2B358-294-481161>
Email: [email protected]<mailto:[email protected]>
WWW:
  www.biochem.oulu.fi/Biocomputing/<http://www.biochem.oulu.fi/Biocomputing/>
  www.oulu.fi/biocenter/biocomputing-and-bioinformatics<http://www.oulu.fi/biocenter/biocomputing-and-bioinformatics>
  www.oulu.fi/biocenter/groups/juffer<http://www.oulu.fi/biocenter/groups/juffer>

StrucBioCat, www.strucbiocat.oulu.fi<http://www.strucbiocat.oulu.fi>
Triacle Biocomputing, www.triacle-bc.com<http://www.triacle-bc.com>

________________________________
From: Thorsten Scherler [[email protected]<mailto:[email protected]>]
Sent: Monday, August 19, 2013 10:12 AM
To: [email protected]<mailto:[email protected]>
Subject: Re: [C3] Calling another from REST resource

On 08/15/2013 04:34 PM, Andre Juffer wrote:
To clarify my question:

I need to identify persons when they access a resource. On the client side, a temporal hash is stored. On the server side, I use that hash to connect with an account associated with a person. The hash is not unique, it is assigned upon signing in, and lost after signing out. When accessing the resource, say a VideoResource in block A,

@POST
Response doSomething(@PathParam("hash") String hash)
{
    Account account = .... // Use the hash here.

    this.facade_.doSomething(account, ....);

    return someResponse;
}

The account information is obtained from another block (B), which is accessed by various others block for the same purpose. These blocks represent various services for which a person may have an account.

Thus, the line with

Account account = .... // Use the hash here.

would access another block.

Can this easily be facilitated with cocoon3 at this stage?

thanks for your time,



The question is do you need to call/use a java class or do you want to call a pipeline?

To call another java class a simple import should do, when you have the dep to the other block set.

In case of calling another pipeline should be working with http://cocoon.apache.org/subprojects/servlet-service/servlet-service-impl/architecture.html servlet:
final URL url = new URL("servlet:blockB:/someUrl");

HTH

salu2


------------------------------------------------------------------------------------------------------------------------------
Andre H. Juffer
Biocenter Oulu and Department of Biochemistry
University of Oulu, Finland
Phone: +358-294-481161<tel:%2B358-294-481161>
Email: [email protected]<mailto:[email protected]>
WWW:
  www.biochem.oulu.fi/Biocomputing/<http://www.biochem.oulu.fi/Biocomputing/>
  www.oulu.fi/biocenter/biocomputing-and-bioinformatics<http://www.oulu.fi/biocenter/biocomputing-and-bioinformatics>
  www.oulu.fi/biocenter/groups/juffer<http://www.oulu.fi/biocenter/groups/juffer>

StrucBioCat, www.strucbiocat.oulu.fi<http://www.strucbiocat.oulu.fi>
Triacle Biocomputing, www.triacle-bc.com<http://www.triacle-bc.com>

________________________________
From: Andre Juffer [[email protected]<mailto:[email protected]>]
Sent: Wednesday, August 14, 2013 4:20 PM
To: [email protected]<mailto:[email protected]>
Subject: [C3] Calling another from REST resource

Is it actually possible to call an another block (say block A) from within a REST resource that resides in block B?

Thanks,


------------------------------------------------------------------------------------------------------------------------------
Andre H. Juffer
Biocenter Oulu and Department of Biochemistry
University of Oulu, Finland
Phone: +358-294-481161<tel:%2B358-294-481161>
Email: [email protected]<mailto:[email protected]>
WWW:
  www.biochem.oulu.fi/Biocomputing/<http://www.biochem.oulu.fi/Biocomputing/>
  www.oulu.fi/biocenter/biocomputing-and-bioinformatics<http://www.oulu.fi/biocenter/biocomputing-and-bioinformatics>
  www.oulu.fi/biocenter/groups/juffer<http://www.oulu.fi/biocenter/groups/juffer>

StrucBioCat, www.strucbiocat.oulu.fi<http://www.strucbiocat.oulu.fi>
Triacle Biocomputing, www.triacle-bc.com<http://www.triacle-bc.com>




--
Thorsten Scherler <scherler.at.gmail.com<http://scherler.at.gmail.com>>
codeBusters S.L. - web based systems
<consulting, training and solutions>

http://www.codebusters.es/




--
Thorsten Scherler <scherler.at.gmail.com<http://scherler.at.gmail.com>>
codeBusters S.L. - web based systems
<consulting, training and solutions>

http://www.codebusters.es/




--
Andre H. Juffer              | Phone: +358-294-481161<tel:%2B358-294-481161>
Biocenter Oulu and           | Fax: +358-8-553-1141<tel:%2B358-8-553-1141>
Department of Biochemistry   | Email: [email protected]<mailto:[email protected]>
University of Oulu, Finland  | WWW: www.biochem.oulu.fi/Biocomputing/<http://www.biochem.oulu.fi/Biocomputing/>
StruBioCat                   | WWW: www.strubiocat.oulu.fi<http://www.strubiocat.oulu.fi>
Triacle Biocomputing         | WWW: www.triacle-bc.com<http://www.triacle-bc.com>





--
Andre H. Juffer              | Phone: +358-294-481161
Biocenter Oulu and           | Fax: +358-8-553-1141
Department of Biochemistry   | Email: [email protected]<mailto:[email protected]>
University of Oulu, Finland  | WWW: www.biochem.oulu.fi/Biocomputing/<http://www.biochem.oulu.fi/Biocomputing/>
StruBioCat                   | WWW: www.strubiocat.oulu.fi<http://www.strubiocat.oulu.fi>
Triacle Biocomputing         | WWW: www.triacle-bc.com<http://www.triacle-bc.com>