[kepler-users] Extracting XML Attributes

[Jon Goodall]

That would be helpful if its not too much trouble.  Otherwise, I don't mind
compiling from source.

Jon

On Wed, Oct 15, 2008 at 1:20 PM, Matt Jones <jones at nceas.ucsb.edu> wrote:

> As an alternative, if compiling the source isn't something you want to
> undertake, maybe Dan could package up a KAR file for you to import into your
> installed version of Kepler.  Dan, do you think this would be feasible?
>
> Matt
>
> On Wed, Oct 15, 2008 at 8:59 AM, Daniel Crawl <crawl at sdsc.edu> wrote:
>
>>
>>
>> Hi Jon,
>>
>> The nightly build is temporarily not being generated, so you
>> will have to download and compile the source. The instructions
>> for this can be found here:
>>
>>
>> https://dev.kepler-project.org/developers/reference/downloading-and-building-the-kepler-source-code/
>>
>> Please let us know if you have any problems,
>>
>>  --dan
>>
>>
>> Jon Goodall wrote:
>>
>>> Hi Dan,
>>>
>>> Do I need to use the nightly build of Kepler to get the updated XPath
>>> actor?  I'm having trouble running the attached workflow with the 1.0 Kepler
>>> version.
>>> Thanks,
>>> Jon
>>>
>>> On Tue, Oct 14, 2008 at 6:41 PM, Daniel Crawl <crawl at sdsc.edu <mailto:
>>> crawl at sdsc.edu>> wrote:
>>>
>>>
>>>    Hi Jon,
>>>
>>>    I've updated the XPath actor with a new port that outputs
>>>    attribute or text() data. Attached is a modified version
>>>    of your workflow that uses this functionality.
>>>
>>>    Let me know if you have questions,
>>>
>>>     --dan
>>>
>>>
>>>    Jon Goodall wrote:
>>>
>>>        Hello,
>>>
>>>        I'm trying to extract XML attributes from a web service in
>>>        Kepler and
>>>        could use some help.  I've tried doing this a couple different
>>>        ways.
>>>        First, I tried the following xpath query:
>>>        /timeSeriesResponse/timeSeries/values/value/@dateTime and the
>>>        exception is ...
>>>
>>>        ptolemy.kernel.util.IllegalActionException: XPath: node
>>>        selected with
>>>        XPath isn't an element.
>>>              at org.sdm.spa.XPath.fire(XPath.java:167)
>>>              at ptolemy.actor.AtomicActor.iterate(AtomicActor.java:398)
>>>              at
>>>
>>>  ptolemy.actor.sched.StaticSchedulingDirector.fire(StaticSchedulingDirector.java:170)
>>>              at
>>>        ptolemy.actor.CompositeActor.fire(CompositeActor.java:400)
>>>              at ptolemy.actor.Manager.iterate(Manager.java:688)
>>>              at ptolemy.actor.Manager.execute(Manager.java:332)
>>>              at ptolemy.actor.Manager.run(Manager.java:1071)
>>>              at ptolemy.actor.Manager$3.run(Manager.java:1112)
>>>
>>>        The xpath query /timeSeriesResponse/timeSeries/values/value
>>>        works fine
>>>        and gives this response ..
>>>
>>>        send to channel 0: {<value dateTime="2000-01-01T00:00:00"
>>>        qualifiers="A">483</value>, <value dateTime="2000-01-02T00:00:00"
>>>        qualifiers="A">464</value> ...
>>>
>>>        I've also tried using an XMLDisassembler actor to access the
>>>        dateTime
>>>        attributes, but no luck.  I was able to get the values, but
>>>        unable to
>>>        get the dateTimes (I tried setting the port name to @dateTime
>>>        and to
>>>        dateTime).  See attached workflow for details.
>>>
>>>        One other thing to note is that this service I'm using can return
>>>        either simple or complex types.  Right now, I'm working with the
>>>        simple type, which is a XML string.  I tried using the complex web
>>>        service actor, but still was unable to get at the dateTime
>>>        attributes.
>>>         If you want to try this yourself, the service is
>>>        http://river.sdsc.edu/wateroneflow/NWIS/DailyValues.asmx?WSDL.
>>>         The
>>>        method GetValues returns the XML string, the method
>>>        GetValuesObject
>>>        returns a complex type.
>>>
>>>        The workflow is attached if you want to take a look.  The goal is
>>>        simply to create a chart of the streamflow time series.  I would
>>>        appreciate any help on this.  Thanks in advance!
>>>
>>>        Jon
>>>
>>>        Jonathan Goodall
>>>        Civil and Environmental Engineering
>>>        University of South Carolina
>>>
>>> ------------------------------------------------------------------------
>>>
>>>        _______________________________________________
>>>        Kepler-users mailing list
>>>        Kepler-users at ecoinformatics.org
>>>        <mailto:Kepler-users at ecoinformatics.org>
>>>
>>> http://mercury.nceas.ucsb.edu/ecoinformatics/mailman/listinfo/kepler-users
>>>
>>>
>>>
>>>
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>
>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Matthew B. Jones
> Director of Informatics Research and Development
> National Center for Ecological Analysis and Synthesis (NCEAS)
> UC Santa Barbara
> jones at nceas.ucsb.edu                       Ph: 1-907-523-1960
> http://www.nceas.ucsb.edu/ecoinfo
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
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