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 > > >
