Thank you for the comments. This, of course, was our first go at the category feature, and enhancements/improvements are already in the development plans.
If you have experience with XPath and some ideas about how to implement it into the LAS cataloging machinery, feel free to experiement and let us know your results.
Joe
---------------------
Bob Yu wrote:
Joe,Thanks for the response.
So, it looks to me that the filter only factors on the name attribute of dataset tag for apply-dataset case (and the name attribute of variable tag for apply-variable case). Is that right ? If that is true, then the filter function is quite limited.
Is it possible that we can use XPath expression or something like that that to catch the dataset/variable for category?
Bob
Joe McLean wrote:
Hi Bob,Bob Yu wrote:
INSIDE and UNDERNEATH do not factor into the filter. The dataset name attribute and the variable name attribute are the only text strings involved in a filtering process at this time.Hi there,when using <category> tag to catalogy the datasets, I have difficulties to list the dataset for what I wanted. My basic question is that the filter tag such as <filter action="" contains="NOAA-CIRES" /> will get all the datasets that contains string "NOAA-CIRES" INSIDE the dataset tag ( such as <mydataset name="NOAA-CIRES SST">) , or INSIDE and UNDERNEATH the <mydataset> element?
<filter action="" contains="NOAA-CIRES" /> will get all datasets with "NOAA-CIRES" as a substring of the dataset name.
<filter action="" equals="NOAA-CIRES" /> will get all datasets with "NOAA-CIRES" as the exact dataset name.<filter action="" contains="SST" /> will get all variables with "SST" as a substring of the variable name.
<filter action="" equals="SST" /> will get all variables with "SST" as the exact variable name.In my practise, I tried to get this dataset:The institution tag is not factored into the filter.
<mydataset name="sea surafce Temp >
<institution name="NOAA-CIRES ... " ....>
....
</mydataset>Say you have two datasets with the institution above and example XML config below.
<mydataset name="sea surface Temp collection">
<institution name="NOAA-CIRES ... " ....>
[...]
</mydataset>
<myotherdset name="salinity obs collection">
<institution name="NOAA-CIRES ... " ....>
[...]
</myotherdset>You would need a category XML structure like:
<las_categories>
<category name="By Serving Institutes">
<category name="NOAA-CIRES Climate Diagnostics Center"><category name="sea surface Temp" doc="http://somedoc">
<filter action="" equals="sea surface Temp collection"/>
</category><category name="salinity" doc="http://somedoc">
<filter action="" equals="salinity obs collection"/>
</category><category/>
</category>
</las_categories>
using the above filter. However I could not get the dataset listed.Anyone has more experience on it for help?
Thanks.
Bob
----------------------------------------
Hope this helps,Joe McLean
------------------------------------------My test category.xml is like this:
<las_categories>
<category name="By Serving Institutes">
<category name="NOAA-CIRES Climate Diagnostics Center">
<filter action="" contains="NOAA-CIRES"/>
</category><category name="FSU COAPS">
<filter action="" contains="FSU"/>
</category><category name="GFDL, NOAA">
<filter action="" contains="GFDL"/>
</category><category name="IPRC-SOEST">
<filter action="" contains="IPRC-SOEST"/>
</category><category name="University of Hawaii Sea Level Center">
<filter action="" contains="Hawaii"/>
</category><category name="GSFC 971, NASA">
<filter action="" contains="My test institute"/>
</category>
</category>
</las_categories>
-- (Bob) Yunyue YU Code 971, Goddard Space Flight Center Greenbelt, MD 20771 (301)614-6850 yuy@nemo.gsfc.nasa.gov-- (Bob) Yunyue YU Code 971, Goddard Space Flight Center Greenbelt, MD 20771 (301)614-6850 yuy@nemo.gsfc.nasa.gov