accessing google api with xpl

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Prameela R wrote:

> Can we call google api with xpl?

  Google has a lot of APIs.  You'll find an example with the Contact
API at http://www.fgeorges.org/xslt/saxon-ext/#google-sample.  This is
a complete sample, entirely written in XSLT.  The HTTP request is sent
by an XSLT extension (this is actually an example for this extension,)
but with OPS you can use the XPL feature instead to send the HTTP
request.

  Hope that helps,

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Florent Georges
http://www.fgeorges.org/
























     



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Hi Florent Georges,

Thanks for the reply. I tried the example.But iam getting the following
exception.


XPath syntax error at char 38 on line 46 in {...send($http-request,
$endpoi...}:
Cannot find a matching 2-argument function named
{java:org.fgeorges.xslt.Exslt2}http-send(). Note: external function calls
have been disabled

Any Clues?

--Prameela

-----Original Message-----
From: Florent Georges [mailto:[hidden email]]
Sent: Tuesday, January 06, 2009 5:59 PM
To: [hidden email]
Subject: [ops-users] Re: accessing google api with xpl

Prameela R wrote:

> Can we call google api with xpl?

  Google has a lot of APIs.  You'll find an example with the Contact
API at http://www.fgeorges.org/xslt/saxon-ext/#google-sample.  This is
a complete sample, entirely written in XSLT.  The HTTP request is sent
by an XSLT extension (this is actually an example for this extension,)
but with OPS you can use the XPL feature instead to send the HTTP
request.

  Hope that helps,

--
Florent Georges
http://www.fgeorges.org/
























     




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Prameela,
        Change your XPL processor from oxf:xslt to oxf:unsafe-xslt, the latter enables external function calls

Ryan

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-----Original Message-----
From: Prameela R [mailto:[hidden email]]
Sent: 07 January 2009 09:51
To: [hidden email]
Subject: [ops-users] RE: Re: accessing google api with xpl

Hi Florent Georges,

Thanks for the reply. I tried the example.But iam getting the following exception.


XPath syntax error at char 38 on line 46 in {...send($http-request,
$endpoi...}:
Cannot find a matching 2-argument function named {java:org.fgeorges.xslt.Exslt2}http-send(). Note: external function calls have been disabled

Any Clues?

--Prameela

-----Original Message-----
From: Florent Georges [mailto:[hidden email]]
Sent: Tuesday, January 06, 2009 5:59 PM
To: [hidden email]
Subject: [ops-users] Re: accessing google api with xpl

Prameela R wrote:

> Can we call google api with xpl?

  Google has a lot of APIs.  You'll find an example with the Contact API at http://www.fgeorges.org/xslt/saxon-ext/#google-sample.  This is a complete sample, entirely written in XSLT.  The HTTP request is sent by an XSLT extension (this is actually an example for this extension,) but with OPS you can use the XPL feature instead to send the HTTP request.

  Hope that helps,

--
Florent Georges
http://www.fgeorges.org/
























     




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Prameela R wrote:

  Prameela,

> XPath syntax error at char 38 on line 46 in {...send($http-request,
> $endpoi...}:
> Cannot find a matching 2-argument function named
> {java:org.fgeorges.xslt.Exslt2}http-send(). Note: external function
> calls have been disabled

  As Ryan said, you can use oxf:unsafe-xslt to enable calls from Saxon
to extension function written in Java.  But I think Orbeon provides
the ability to send HTTP requests too.  So you have the following two
options:

  - format your request to the Google Authentication service using
    XSLT or whatever, use XPL HTTP support to send it, store the
    authentication token in an XPL variable, use it to format your
    requests to your target Google service (contacts, agenda or
    whatever) and again use XPL HTTP support to send them;

  - use oxf:unsafe-xslt and put fgeorges.jar in the Orbeon classpath,
    and create an XSLT stylesheet that do the whole job, including
    sending HTTP request with the extension function (as within the
    example I pointed you to.)

  The advantage of the former is that you rely on a more wisely used
implementation to send HTTP requests, so it should be more reliable
and there are more people to answer your questions.

  The advantage of the later is that you have a standalone stylesheet
that does the job, usable outside of Orbeon too (this is particularly
useful to help you developing the stylesheet I think, for example if
you use an IDE like oXygen, you can write your stylesheet with it and
execute it with a single click, without having to set a Java EE
environment up.)

  Hope that helps,

--
Florent Georges
http://www.fgeorges.org/






















     



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