Re: [C2.1-CVS] Problem using 2 pipelines

[Antonio Gallardo Rivera]

Thanks,

El Miércoles, 25 de Septiembre de 2002 01:32, Tuomo Lesonen escribió:
> On Wed, 25 Sep 2002, Antonio Gallardo Rivera wrote:
> > Many thanks!
> >
> > Its a nice workaround. But what about to built the final logicsheet? many
> > people will use it. I am trying to do that. I am sure you will welcome
> > it.
> >
> > BTW, why is the XSL transform support first than the XSP? I feel like I
> > am doing this in the wrong way, like I need to prefer XSL tranform over
> > XSP. I saw that many people in thi maillist prefer make XSLT tranforms
> > and few people use XSP. Why?
> >
> > Antonio Gallardo
>
> If you're talking about the logicsheet, you have to do the XSLT first to
> extend the XSP page with more Java. Then it's pushed through the
> ServerPagesGenerator and processed. Logicsheet is easier to maintain than
> writing the same XSP every time on every page it's needed.
>
> -Tuomo
>
> > El Miércoles, 25 de Septiembre de 2002 00:58, Tuomo Henrikki Lesonen 
escribió:
> > > Hi Antonio!
> > >
> > > I really tried to answer to your question about the auth-framework, but
> > > couldn't connect to my mailserver at all! :( Now it works again... But
> > > it seems that you're going through the same steps than I did a while
> > > ago. (With my own help)
> > >
> > > At this moment, the option of using 2 pipelines the way you are
> > > doing, with the cocoon: pseudo-protocol doesn't work. This is due to
> > > a major bug
> > > in the cocoon component handling. It has been reported, but no actions
> > > have been taken yet. BUT: There IS a way around this!
> > >
> > > I have my authentication resource generated with XSP and ESQL (Username
> > > and pwd are
> > > checked against db, and user data is being returned in the
> > >  section
> > > of that generated resource). In addition, I added another line inside
> > > the  section, which places the users ID in a session
> > > attribute. Now it can be used in XSP later on.
> > >
> > > 
> > >   
> > >> > column="id"/> 
> > >
> > > Hope this helps.
> > >
> > > -Tuomo
> > >
> > > On Tue, 24 Sep 2002, Antonio Gallardo Rivera wrote:
> > > > The first pipeline get and XML -> XSLT -> XML
> > > >
> > > > 
> > > > 
> > > > 
> > > >   
> > > >  
> > > >  
> > > >  
> > > > 
> > > >   
> > > > 
> > > >
> > > > The second read from the first pipeline making an XSP tranformation:
> > > >
> > > > 
> > > >  > > > type="serverpages" encoding="ISO-8859-1"/>
> > > > 
> > > > 
> > > > 
> > > >
> > > > I call only this second pipeline, but It returns:
> > > >
> > > > Exception during source resolving.
> > > >
> > > > org.apache.cocoon.ProcessingException: Exception during source
> > > > resolving.: org.apache.excalibur.source.SourceException: Exception
> > > > during processing of cocoon://usr-cambiar.xml:
> > > > org.apache.cocoon.ProcessingException: Failed to execute pipeline.:
> > > > java.lang.NullPointerException
> > > >
> > > >
> > > > If I call directly the fisrt pipeline it returns me a valid XML file.
> > > > What I am doing wrong?
> > > >
> > > > Thanks in advance,
> > > >
> > > > Antonio Gallardo
> > > >
> > > > -
> > > > Please check that your question  has not already been answered in the
> > > > FAQ before posting. 
> > > >
> > > > To unsubscribe, e-mail: <[EMAIL PROTECTED]>
> > > > For additional commands, e-mail:   <[EMAIL PROTECTED]>
> > >
> > > -
> > > Please check that your question  has not already been answered in the
> > > FAQ before posting. 
> > >
> > > To unsubscribe, e-mail: <[EMAIL PROTECTED]>
> > > For additional commands, e-mail:   <[EMAIL PROTECTED]>
> >
> > -
> > Please check that your question  has not already been answered in the
> > FAQ before posting. 
> >
> > To unsubscribe, e-mail: <[EMAIL PROTECTED]>
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>
> -
> Please check that your question  has not already been answered in the
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>
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RE: [C2.1-CVS] Problem using 2 pipelines

[Hunsberger, Peter]

>  I saw that many people in thi maillist prefer make XSLT tranforms and few

> people use XSP. Why?

A couple of reasons why I avoid using XSP: 1) It's more or less proprietary
(though that is sort of changing). XSLT can be run with many different
application servers. 2) XSLT is functional programming and thus lends itself
well to rule based processing.  XSP is (mostly) procedural programming and
in some ways isn't as well suited for the job of sorting and merging tree
nodes.

Putting point two differently: XSLT is designed specifically for
manipulating XML.  Java is a general programming language not at all
specialized for handling XML, XSP only partly bridges the gap.

My personal approach is to try and write generic XSLT for general tasks: eg.
filtering the contents of a XML tree based on the contents of a second tree;
merging the attributes of two XML trees with similar node names.  I then use
these as building blocks to create more specific tasks: filtering an XML
tree based on what a user is authorized to see; adding presentation
attributes to a nodeset based on the final use of the XML.  In this way, I
can write XSLT that is driven by XML rules that just about any one can
author (and maintain).  If I was writing XSP and the business rules changed
making similar changes would be (I believe) a much harder process.  

In our case we have (literally) 1000's of business rules to implement, any
of which can change on a weekly basis (such is the nature of clinical
trials).  So having an easy way to dynamically build up applications based
on business rules is important to us. If your application is more static and
processing speed is more of an issue then a different architecture may make
more sense for you.

Somewhat off topic, but a general rule at how to pick a particular way of
implementing systems:

With any large application it's always a good ideas to first build up a
conceptual systems architecture based on business requirements.  Then build
a logical architecture -- based on both the conceptual architecture, the
current state of your business and application specific requirements --
before you pick a physical architecture.  Only once you have a physical
architecture should you start to match up a physical implementation (detail
design) with the physical architecture.  I know this sounds like a lot of
analysis, but its been shown that if you can hit the target of 1/3 analysis,
1/3 development, 1/3 testing, your project life cycle will be much shorter
than if you have other proportions of analysis to development and testing...



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Re: [C2.1-CVS] Problem using 2 pipelines

[Tuomo Henrikki Lesonen]

Hi Antonio!

I really tried to answer to your question about the auth-framework, but
couldn't connect to my mailserver at all! :( Now it works again... But it
seems that you're going through the same steps than I did a while ago.
(With my own help)

At this moment, the option of using 2 pipelines the way you are
doing, with the cocoon: pseudo-protocol doesn't work. This is due to
a major bug
in the cocoon component handling. It has been reported, but no actions
have been taken yet. BUT: There IS a way around this!

I have my authentication resource generated with XSP and ESQL (Username
and pwd are
checked against db, and user data is being returned in the
 section
of that generated resource). In addition, I added another line inside the
 section, which places the users ID in a session
attribute. Now it can be used in XSP later on.


  
  


Hope this helps.

-Tuomo

On Tue, 24 Sep 2002, Antonio Gallardo Rivera wrote:

> The first pipeline get and XML -> XSLT -> XML
>
> 
> 
>   
>   
>  
>  
>  
> 
>   
> 
>
> The second read from the first pipeline making an XSP tranformation:
>
> 
>  type="serverpages" encoding="ISO-8859-1"/>
> 
> 
> 
>
> I call only this second pipeline, but It returns:
>
> Exception during source resolving.
>
> org.apache.cocoon.ProcessingException: Exception during source resolving.:
> org.apache.excalibur.source.SourceException: Exception during processing of
> cocoon://usr-cambiar.xml: org.apache.cocoon.ProcessingException: Failed to
> execute pipeline.: java.lang.NullPointerException
>
>
> If I call directly the fisrt pipeline it returns me a valid XML file. What I
> am doing wrong?
>
> Thanks in advance,
>
> Antonio Gallardo
>
> -
> Please check that your question  has not already been answered in the
> FAQ before posting. 
>
> To unsubscribe, e-mail: <[EMAIL PROTECTED]>
> For additional commands, e-mail:   <[EMAIL PROTECTED]>
>


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Re: [C2.1-CVS] Problem using 2 pipelines

[Tuomo Lesonen]

On Wed, 25 Sep 2002, Antonio Gallardo Rivera wrote:

> Many thanks!
>
> Its a nice workaround. But what about to built the final logicsheet? many
> people will use it. I am trying to do that. I am sure you will welcome it.
>
> BTW, why is the XSL transform support first than the XSP? I feel like I am
> doing this in the wrong way, like I need to prefer XSL tranform over XSP. I
> saw that many people in thi maillist prefer make XSLT tranforms and few
> people use XSP. Why?
>
> Antonio Gallardo
>

If you're talking about the logicsheet, you have to do the XSLT first to
extend the XSP page with more Java. Then it's pushed through the
ServerPagesGenerator and processed. Logicsheet is easier to maintain than
writing the same XSP every time on every page it's needed.

-Tuomo

>
>
> El Miércoles, 25 de Septiembre de 2002 00:58, Tuomo Henrikki Lesonen escribió:
> > Hi Antonio!
> >
> > I really tried to answer to your question about the auth-framework, but
> > couldn't connect to my mailserver at all! :( Now it works again... But it
> > seems that you're going through the same steps than I did a while ago.
> > (With my own help)
> >
> > At this moment, the option of using 2 pipelines the way you are
> > doing, with the cocoon: pseudo-protocol doesn't work. This is due to
> > a major bug
> > in the cocoon component handling. It has been reported, but no actions
> > have been taken yet. BUT: There IS a way around this!
> >
> > I have my authentication resource generated with XSP and ESQL (Username
> > and pwd are
> > checked against db, and user data is being returned in the
> >  section
> > of that generated resource). In addition, I added another line inside the
> >  section, which places the users ID in a session
> > attribute. Now it can be used in XSP later on.
> >
> > 
> >   
> >> column="id"/> 
> >
> > Hope this helps.
> >
> > -Tuomo
> >
> > On Tue, 24 Sep 2002, Antonio Gallardo Rivera wrote:
> > > The first pipeline get and XML -> XSLT -> XML
> > >
> > > 
> > > 
> > >   
> > >   
> > >  
> > >  
> > >  
> > > 
> > >   
> > > 
> > >
> > > The second read from the first pipeline making an XSP tranformation:
> > >
> > > 
> > >  > > type="serverpages" encoding="ISO-8859-1"/>
> > > 
> > > 
> > > 
> > >
> > > I call only this second pipeline, but It returns:
> > >
> > > Exception during source resolving.
> > >
> > > org.apache.cocoon.ProcessingException: Exception during source
> > > resolving.: org.apache.excalibur.source.SourceException: Exception during
> > > processing of cocoon://usr-cambiar.xml:
> > > org.apache.cocoon.ProcessingException: Failed to execute pipeline.:
> > > java.lang.NullPointerException
> > >
> > >
> > > If I call directly the fisrt pipeline it returns me a valid XML file.
> > > What I am doing wrong?
> > >
> > > Thanks in advance,
> > >
> > > Antonio Gallardo
> > >
> > > -
> > > Please check that your question  has not already been answered in the
> > > FAQ before posting. 
> > >
> > > To unsubscribe, e-mail: <[EMAIL PROTECTED]>
> > > For additional commands, e-mail:   <[EMAIL PROTECTED]>
> >
> > -
> > Please check that your question  has not already been answered in the
> > FAQ before posting. 
> >
> > To unsubscribe, e-mail: <[EMAIL PROTECTED]>
> > For additional commands, e-mail:   <[EMAIL PROTECTED]>
>
> -
> Please check that your question  has not already been answered in the
> FAQ before posting. 
>
> To unsubscribe, e-mail: <[EMAIL PROTECTED]>
> For additional commands, e-mail:   <[EMAIL PROTECTED]>
>


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Re: [C2.1-CVS] Problem using 2 pipelines

[Antonio Gallardo Rivera]

Many thanks!

Its a nice workaround. But what about to built the final logicsheet? many 
people will use it. I am trying to do that. I am sure you will welcome it.

BTW, why is the XSL transform support first than the XSP? I feel like I am 
doing this in the wrong way, like I need to prefer XSL tranform over XSP. I 
saw that many people in thi maillist prefer make XSLT tranforms and few 
people use XSP. Why?

Antonio Gallardo



El Miércoles, 25 de Septiembre de 2002 00:58, Tuomo Henrikki Lesonen escribió:
> Hi Antonio!
>
> I really tried to answer to your question about the auth-framework, but
> couldn't connect to my mailserver at all! :( Now it works again... But it
> seems that you're going through the same steps than I did a while ago.
> (With my own help)
>
> At this moment, the option of using 2 pipelines the way you are
> doing, with the cocoon: pseudo-protocol doesn't work. This is due to
> a major bug
> in the cocoon component handling. It has been reported, but no actions
> have been taken yet. BUT: There IS a way around this!
>
> I have my authentication resource generated with XSP and ESQL (Username
> and pwd are
> checked against db, and user data is being returned in the
>  section
> of that generated resource). In addition, I added another line inside the
>  section, which places the users ID in a session
> attribute. Now it can be used in XSP later on.
>
> 
>   
>column="id"/> 
>
> Hope this helps.
>
> -Tuomo
>
> On Tue, 24 Sep 2002, Antonio Gallardo Rivera wrote:
> > The first pipeline get and XML -> XSLT -> XML
> >
> > 
> > 
> > 
> >   
> >  
> >  
> >  
> > 
> >   
> > 
> >
> > The second read from the first pipeline making an XSP tranformation:
> >
> > 
> >  > type="serverpages" encoding="ISO-8859-1"/>
> > 
> > 
> > 
> >
> > I call only this second pipeline, but It returns:
> >
> > Exception during source resolving.
> >
> > org.apache.cocoon.ProcessingException: Exception during source
> > resolving.: org.apache.excalibur.source.SourceException: Exception during
> > processing of cocoon://usr-cambiar.xml:
> > org.apache.cocoon.ProcessingException: Failed to execute pipeline.:
> > java.lang.NullPointerException
> >
> >
> > If I call directly the fisrt pipeline it returns me a valid XML file.
> > What I am doing wrong?
> >
> > Thanks in advance,
> >
> > Antonio Gallardo
> >
> > -
> > Please check that your question  has not already been answered in the
> > FAQ before posting. 
> >
> > To unsubscribe, e-mail: <[EMAIL PROTECTED]>
> > For additional commands, e-mail:   <[EMAIL PROTECTED]>
>
> -
> Please check that your question  has not already been answered in the
> FAQ before posting. 
>
> To unsubscribe, e-mail: <[EMAIL PROTECTED]>
> For additional commands, e-mail:   <[EMAIL PROTECTED]>

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Re: [C2.1-CVS] Problem using 2 pipelines

[Tuomo Henrikki Lesonen]

Hi Antonio!

I really tried to answer to your question about the auth-framework, but
couldn't connect to my mailserver at all! :( Now it works again... But it
seems that you're going through the same steps than I did a while ago.
(With my own help)

At this moment, the option of using 2 pipelines the way you are
doing, with the cocoon: pseudo-protocol doesn't work. This is due to
a major bug
in the cocoon component handling. It has been reported, but no actions
have been taken yet. BUT: There IS a way around this!

I have my authentication resource generated with XSP and ESQL (Username
and pwd are
checked against db, and user data is being returned in the
 section
of that generated resource). In addition, I added another line inside the
 section, which places the users ID in a session
attribute. Now it can be used in XSP later on.


  
  


Hope this helps.

-Tuomo

On Tue, 24 Sep 2002, Antonio Gallardo Rivera wrote:

> The first pipeline get and XML -> XSLT -> XML
>
> 
> 
>   
>   
>  
>  
>  
> 
>   
> 
>
> The second read from the first pipeline making an XSP tranformation:
>
> 
>  type="serverpages" encoding="ISO-8859-1"/>
> 
> 
> 
>
> I call only this second pipeline, but It returns:
>
> Exception during source resolving.
>
> org.apache.cocoon.ProcessingException: Exception during source resolving.:
> org.apache.excalibur.source.SourceException: Exception during processing of
> cocoon://usr-cambiar.xml: org.apache.cocoon.ProcessingException: Failed to
> execute pipeline.: java.lang.NullPointerException
>
>
> If I call directly the fisrt pipeline it returns me a valid XML file. What I
> am doing wrong?
>
> Thanks in advance,
>
> Antonio Gallardo
>
> -
> Please check that your question  has not already been answered in the
> FAQ before posting. 
>
> To unsubscribe, e-mail: <[EMAIL PROTECTED]>
> For additional commands, e-mail:   <[EMAIL PROTECTED]>
>



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