Only WOW!

Hank Ratzesberger wrote

As I have said before, OF is such a terrific environment
to work with XML.  One is able to use all of XPath 2.0 in
pipelines and XForms, and then it just works.

For example, was able to build a list of select's (checkboxes)
that all updated the same reference/node. Have that node
automatically calculated into a sequence, and use the sequence
in a kind of lookup table to another set of data.  Check the
box, and automatically the list grows/shrinks with items that
are related by the key.

I have a larger snippet of code, but when OF handled this
XPath with sequences and filters:

  for $uid in $sequence, $node in //some-nodes[uid=$uid] return $node

and redrew the list...WOW

Cheers,
Hank


<xforms:instance id="select">
        <select xmlns="">
                <uids/>
                <uids-seq/>
        </select
</xforms:instance>
       
<xforms:bind nodeset="instance('select')">
        <xforms:bind nodeset="uids-seq" calculate="string-join(tokenize(../
uids,'\s'),',')"/>
</xforms:bind>

   <xforms:variable name="uids-seq" select="instance('all-select')/
uids-seq"/>
   <xforms:repeat nodeset="for $uid in $uids-seq, $node in //some-
nodes[uid=$uid] return $node">
                           </xforms:repeat>

<xforms:output value="uid"/>

<xforms:output value="some-attribute"/>

Hank Ratzesberger
NEES@UCSB
Institute for Crustal Studies,
University of California, Santa Barbara
805-893-8042







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... [show rest of quote]

Hank Ratzesberger wrote

Yes, this data is essentially relational tables "dumped" to xml,
and put into eXist.

However, this "table" is small.  I load it as shared instance.
It is the <repeat ref="for ... return $node"> the does the
filtering of what to display.

Otherwise, I would need to send a submission to update the
displayed list.  And actually, I did that at first also,
the data was in a different widget:tab, and updated the
instance on the xforms-select event.

--Hank


On Jun 12, 2008, at 10:51 AM, ilango_g wrote:

>
> Hi Hank
> I have just constructed a multiple column checkbox list and would  
> like to
> use a lookup table with this.
> Right now, I use an XML file to populate the values of my checkboxes.
>
> Are you maintaining a code table in eXist or something?
>
> thanks
> il
>
> Hank Ratzesberger wrote:
>>
>>
>> As I have said before, OF is such a terrific environment
>> to work with XML.  One is able to use all of XPath 2.0 in
>> pipelines and XForms, and then it just works.
>>
>> For example, was able to build a list of select's (checkboxes)
>> that all updated the same reference/node. Have that node
>> automatically calculated into a sequence, and use the sequence
>> in a kind of lookup table to another set of data.  Check the
>> box, and automatically the list grows/shrinks with items that
>> are related by the key.
>>
>> I have a larger snippet of code, but when OF handled this
>> XPath with sequences and filters:
>>
>>   for $uid in $sequence, $node in //some-nodes[uid=$uid] return $node
>>
>> and redrew the list...WOW
>>
>> Cheers,
>> Hank
>>
>>
>> <xforms:instance id="select">
>> <select xmlns="">
>> <uids/>
>> <uids-seq/>
>> </select
>> </xforms:instance>
>>
>> <xforms:bind nodeset="instance('select')">
>> <xforms:bind nodeset="uids-seq" calculate="string-join(tokenize(../
>> uids,'\s'),',')"/>
>> </xforms:bind>
>>
>> >>    <xforms:variable name="uids-seq" select="instance('all-select')/
>> uids-seq"/>
>>    <xforms:repeat nodeset="for $uid in $uids-seq, $node in //some-
>> nodes[uid=$uid] return $node">
>>      >>        >>        >>      >>    </xforms:repeat>
>>

<xforms:output value="uid"/>

<xforms:output value="some-attribute"/>

>>
>>
>> Hank Ratzesberger
>> NEES@UCSB
>> Institute for Crustal Studies,
>> University of California, Santa Barbara
>> 805-893-8042
>>
>>
>>
>>
>>
>>
>>
>> --
>> You receive this message as a subscriber of the ops-users@ow2.org  
>> mailing
>> list.
>> To unsubscribe: mailto:ops-users-unsubscribe@ow2.org
>> For general help: mailto:sympa@ow2.org?subject=help
>> OW2 mailing lists service home page: http://www.ow2.org/wws
>>
>>
>
> --
> View this message in context: http://www.nabble.com/Only-WOW%21- 
> tp17803191p17805836.html
> Sent from the ObjectWeb OPS - Users mailing list archive at  
> Nabble.com.
>
>
> --
> You receive this message as a subscriber of the ops-users@ow2.org  
> mailing list.
> To unsubscribe: mailto:ops-users-unsubscribe@ow2.org
> For general help: mailto:sympa@ow2.org?subject=help
> OW2 mailing lists service home page: http://www.ow2.org/wws

Hank Ratzesberger
NEES@UCSB
Institute for Crustal Studies,
University of California, Santa Barbara
805-893-8042







--
You receive this message as a subscriber of the ops-users@ow2.org mailing list.
To unsubscribe: mailto:ops-users-unsubscribe@ow2.org
For general help: mailto:sympa@ow2.org?subject=help
OW2 mailing lists service home page: http://www.ow2.org/wws

... [show rest of quote]

Hank Ratzesberger wrote

Yes, this data is essentially relational tables "dumped" to xml,
and put into eXist.

However, this "table" is small.  I load it as shared instance.
It is the <repeat ref="for ... return $node"> the does the
filtering of what to display.

Otherwise, I would need to send a submission to update the
displayed list.  And actually, I did that at first also,
the data was in a different widget:tab, and updated the
instance on the xforms-select event.

--Hank


On Jun 12, 2008, at 10:51 AM, ilango_g wrote:

>
> Hi Hank
> I have just constructed a multiple column checkbox list and would  
> like to
> use a lookup table with this.
> Right now, I use an XML file to populate the values of my checkboxes.
>
> Are you maintaining a code table in eXist or something?
>
> thanks
> il
>
> Hank Ratzesberger wrote:
>>
>>
>> As I have said before, OF is such a terrific environment
>> to work with XML.  One is able to use all of XPath 2.0 in
>> pipelines and XForms, and then it just works.
>>
>> For example, was able to build a list of select's (checkboxes)
>> that all updated the same reference/node. Have that node
>> automatically calculated into a sequence, and use the sequence
>> in a kind of lookup table to another set of data.  Check the
>> box, and automatically the list grows/shrinks with items that
>> are related by the key.
>>
>> I have a larger snippet of code, but when OF handled this
>> XPath with sequences and filters:
>>
>>   for $uid in $sequence, $node in //some-nodes[uid=$uid] return $node
>>
>> and redrew the list...WOW
>>
>> Cheers,
>> Hank
>>
>>
>> <xforms:instance id="select">
>> <select xmlns="">
>> <uids/>
>> <uids-seq/>
>> </select
>> </xforms:instance>
>>
>> <xforms:bind nodeset="instance('select')">
>> <xforms:bind nodeset="uids-seq" calculate="string-join(tokenize(../
>> uids,'\s'),',')"/>
>> </xforms:bind>
>>
>> >>    <xforms:variable name="uids-seq" select="instance('all-select')/
>> uids-seq"/>
>>    <xforms:repeat nodeset="for $uid in $uids-seq, $node in //some-
>> nodes[uid=$uid] return $node">
>>      >>        >>        >>      >>    </xforms:repeat>
>>

<xforms:output value="uid"/>

<xforms:output value="some-attribute"/>

>>
>>
>> Hank Ratzesberger
>> NEES@UCSB
>> Institute for Crustal Studies,
>> University of California, Santa Barbara
>> 805-893-8042
>>
>>
>>
>>
>>
>>
>>
>> --
>> You receive this message as a subscriber of the ops-users@ow2.org  
>> mailing
>> list.
>> To unsubscribe: mailto:ops-users-unsubscribe@ow2.org
>> For general help: mailto:sympa@ow2.org?subject=help
>> OW2 mailing lists service home page: http://www.ow2.org/wws
>>
>>
>
> --
> View this message in context: http://www.nabble.com/Only-WOW%21- 
> tp17803191p17805836.html
> Sent from the ObjectWeb OPS - Users mailing list archive at  
> Nabble.com.
>
>
> --
> You receive this message as a subscriber of the ops-users@ow2.org  
> mailing list.
> To unsubscribe: mailto:ops-users-unsubscribe@ow2.org
> For general help: mailto:sympa@ow2.org?subject=help
> OW2 mailing lists service home page: http://www.ow2.org/wws

Hank Ratzesberger
NEES@UCSB
Institute for Crustal Studies,
University of California, Santa Barbara
805-893-8042







--
You receive this message as a subscriber of the ops-users@ow2.org mailing list.
To unsubscribe: mailto:ops-users-unsubscribe@ow2.org
For general help: mailto:sympa@ow2.org?subject=help
OW2 mailing lists service home page: http://www.ow2.org/wws

... [show rest of quote]

Hank Ratzesberger wrote

Hi Ilango,

I don't know if this is the best practice, only that when it
worked I was really impressed.

The data is already in eXist. It is simply that it was made
from sql and so it has relationships like that.  One of them
is that a 'station' has one to many with 'channel' so the path

   //channels[sta='WLA']

returns a many nodes.  I want to list the stations, then when
they are checked/unchecked, expand/shrink the list.

Something like this:

--Hank


<xforms:instance id="sites"
   src="http://example.org/exist/rest/db/sites.xml"/>

<xforms:instance id="chans"
   src="http://example.org/exist/rest/db/chans.xml"/>

<xforms:instance id="all-select">
   <select xmlns="">
     <stas/>
     <sta-seq/>
   </select>
</xforms:instance>
       
<xforms:bind nodeset="instance('all-select')">
   <xforms:bind nodeset="sta-seq" calculate="string-join(tokenize(../
stas,'\s'),',')"/>
</xforms:bind>


<xforms:group ref="instance('sites')">
   <xforms:repeat nodeset="/sites/site" id="sites-repeat">
     <xxforms:variable name="sta" select="sta"/>
     <xforms:select ref="instance('all-select')/stas" appearance="full">
       <xforms:choices>
         <xforms:item>
           <xforms:value><xforms:output value="$sta"/></xforms:value>
           <xforms:label><xforms:output value="$sta"/></xforms:label>
         </xforms:item>
        </xforms:choices>
     </xforms:select>
   </xforms:repeat>
</xforms:group>



<xforms:group ref="instance('chans')">
   <xforms:variable name="sta-seq" select="instance('all-select')/sta-
seq"/>
   <xforms:repeat nodeset="for $seq in instance('all-select')/sta-
seq, $chan in //sitechan[sta=$seq] return $chan">
     <xforms:output value="sta"/>
     <xforms:output value="chan"/> 

... [show rest of quote]