Error reading catalog with latest (2.2.16) toolsUI jar

Wed Jul 19 08:00:37 MDT 2006

Hi Kyle,

Thanks for looking into this.  I think you've hit upon the solution, but 
ultimately I think it will take updates to the PyDAP server to truly fix 
the problem (or text versions of the entire hierarchy).  The test 
catalog is valid and it reads just fine in my software.  However, each 
of the catalogRef elements points to another catalog generated by PyDAP 
each of which has the same problems as the original so my software fails 
again when tries to work with the next level down.

Roland

Kyle Halliday wrote:
> Hi Roland -
>
> I've taken a closer look at the THREDDS being generated by our PyDAP 
> server, and I've found a number of errors. Fortunately, they shouldn't 
> be too difficult to correct.
> I was able to get the XML from 
> http://climate.llnl.gov/dap/ipcc4?thredds to validate after:
> 1) Adding the encoding="utf-8" attribute to the XML declaration.
> 2) Adding the DOCTYPE declaration: <!DOCTYPE catalog SYSTEM 
> "http://www.unidata.ucar.edu/projects/THREDDS/xml/InvCatalog.0.6.dtd">
> 3) Referencing the xlink namespace in the catalog tag: 
> xmlns:xlink="http://www.w3.org/1999/xlink"
> 4) Adding "name" and "version" attributes to the catalog tag.
> 5) Changing all catalogRef "href" and "title" attributes to 
> "xlink:href" and "xlink:title", respectively.
>
> Below is the corrected version of the THREDDS catalog, which I was 
> able to validate with the THREDDS validation form.
> I've also temporarily posted this at: 
> http://www-pcmdi.llnl.gov/test/thredds.xml
> Does this parse successfully using your Java code?
>
> Thanks,
> Kyle
>
> <?xml version="1.0" encoding="utf-8"?>
> <!DOCTYPE catalog SYSTEM 
> "http://www.unidata.ucar.edu/projects/THREDDS/xml/InvCatalog.0.6.dtd">
> <catalog xmlns="http://www.unidata.ucar.edu/thredds" 
> xmlns:xlink="http://www.w3.org/1999/xlink" name="test" version="1.0">
>    <dataset name="PyDAP server">
>        <service base="http://climate.llnl.gov/dap" name="PyDAP server" 
> serviceType="DODS"/>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/2xco2/?thredds" 
> xlink:title="ipcc4/2xco2"/>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/sresb1/?thredds" 
> xlink:title="ipcc4/sresb1"/>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/1pctto4x/?thredds" 
> xlink:title="ipcc4/1pctto4x"/>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/commit/?thredds" 
> xlink:title="ipcc4/commit"/>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/20c3m/?thredds" 
> xlink:title="ipcc4/20c3m"/>
>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/amip/?thredds" 
> xlink:title="ipcc4/amip"/>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/pdcntrl/?thredds" 
> xlink:title="ipcc4/pdcntrl"/>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/slabcntl/?thredds" 
> xlink:title="ipcc4/slabcntl"/>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/picntrl/?thredds" 
> xlink:title="ipcc4/picntrl"/>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/sresa2/?thredds" 
> xlink:title="ipcc4/sresa2"/>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/sresa1b/?thredds" 
> xlink:title="ipcc4/sresa1b"/>
>        <catalogRef 
> xlink:href="http://climate.llnl.gov/dap/ipcc4/1pctto2x/?thredds" 
> xlink:title="ipcc4/1pctto2x"/>
>    </dataset>
> </catalog>
>
>
>
>
>> Organization: UCAR/Unidata
>> Keywords: 200607182040.k6IKeZSZ000730
>> Date: Tue, 18 Jul 2006 15:40:12 -0500
>> From: Roland Schweitzer <Roland.Schweitzer at noaa.gov>
>> To: thredds at unidata.ucar.edu
>> Subject: Error reading catalog with latest (2.2.16) toolsUI jar
>> Sender: owner-thredds at unidata.ucar.edu
>> X-Brightmail: Whitelisted1
>> X-Brightmail-Tracker: AAAAAA=
>>
>> Hi Folks,
>>
>> I sent a message on this subject to the support-thredds address at 
>> Unidata, but it occurred to me that this might be a "community 
>> question" that the pyDAP developer might want to weigh in on so here 
>> goes...
>>
>> When I attempt to read this catalog: 
>> http://climate.llnl.gov/dap/ipcc4?thredds (which I believe is being 
>> automatically generated by the pyDAP server) I get the following error:
>>
>> Exception in thread "Thread-11" java.lang.NullPointerException
>>   at thredds.catalog.InvCatalogRef.<init>(InvCatalogRef.java:70)
>>   at 
>> thredds.catalog.parser.jdom.InvCatalogFactory10.readCatalogRef(InvCatalogFactory10.java:153) 
>>
>>   at 
>> thredds.catalog.parser.jdom.InvCatalogFactory10.readDatasetInfo(InvCatalogFactory10.java:266) 
>>
>>   at 
>> thredds.catalog.parser.jdom.InvCatalogFactory10.readDataset(InvCatalogFactory10.java:182) 
>>
>>   at 
>> thredds.catalog.parser.jdom.InvCatalogFactory10.readCatalog(InvCatalogFactory10.java:135) 
>>
>>   at 
>> thredds.catalog.parser.jdom.InvCatalogFactory10.parseXML(InvCatalogFactory10.java:89) 
>>
>>   at 
>> thredds.catalog.InvCatalogFactory.readXML(InvCatalogFactory.java:324)
>>   at 
>> thredds.catalog.InvCatalogFactory.readXML(InvCatalogFactory.java:299)
>>   at 
>> thredds.catalog.ui.CatalogFactoryCancellable.access$701(CatalogFactoryCancellable.java:42) 
>>
>>   at 
>> thredds.catalog.ui.CatalogFactoryCancellable$OpenCatalogTask.run(CatalogFactoryCancellable.java:155) 
>>
>>   at java.lang.Thread.run(Unknown Source)
>>
>> I have tried both my own code which I know uses 2.2.16 and the 
>> toolsUI that launches from 
>> http://www.unidata.ucar.edu/software/netcdf-java/v2.2/webstart/netCDFtools-2.2.jnlp. 
>>
>>
>> I could not get the validation form at 
>> http://motherlode.ucar.edu:8080/thredds/validateForm.html to work 
>> against this URL either.
>>
>> Any ideas?
>>
>> Thanks,
>> Roland
>>
>> =============================================================================== 
>>
>> To unsubscribe thredds, visit:
>> http://www.unidata.ucar.edu/mailing-list-delete-form.html
>> =============================================================================== 
>>
>

==============================================================================
To unsubscribe thredds, visit:
http://www.unidata.ucar.edu/mailing-list-delete-form.html
==============================================================================