[kepler-users] Extracting XML Attributes
Daniel Crawl
crawl at sdsc.edu
Wed Oct 15 12:39:38 PDT 2008
Hi Jon,
Attached is a KAR containing the updated actor. You can import
it via File -> Import Archive. The new version should show up
in the actor tree named something like "XPath Processor_2_".
--dan
Jon Goodall wrote:
> 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
> <mailto: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
> <mailto: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>
> <mailto: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>
> <mailto:Kepler-users at ecoinformatics.org
> <mailto:Kepler-users at ecoinformatics.org>>
>
>
> http://mercury.nceas.ucsb.edu/ecoinformatics/mailman/listinfo/kepler-users
>
>
>
>
> _______________________________________________
> 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
>
>
>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 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 <mailto:jones at nceas.ucsb.edu>
> Ph: 1-907-523-1960
> http://www.nceas.ucsb.edu/ecoinfo
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: xpath-new.kar
Type: audio/x-midi
Size: 4245 bytes
Desc: not available
URL: <http://mercury.nceas.ucsb.edu/ecoinformatics/pipermail/kepler-users/attachments/20081015/9e7fa75a/attachment.bin>
More information about the Kepler-users
mailing list