Error reading catalog with latest (2.2.16) toolsUI jar

Wed Jul 19 09:20:33 MDT 2006

Hi Roland -

We've made some customizations to the THREDDS-generating middleware that 
comes with PyDAP 2.1, so we should be able to make the necessary fixes 
to PyDAP itself.

Thanks,
Kyle

Roland Schweitzer wrote:
> 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
==============================================================================