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[thredds] More questions about serviceName, urlPath, and access




Ethan,
Is it allowed for a dataset to have the serviceName and/or the urlPath specified as child elements? (I think the answer is yes to serviceName and no to urlPath) 


Examples:

   <dataset name="level2_b" ID="nc/level2_b.nc" >
      <serviceName>s2</serviceName>
      <urlPath>nc/level2b_.nc</urlPath>
   </dataset>
<dataset name="level2_b" urlPath="nc/level2_b.nc" ID="nc/ level2_b.nc" > 
      <serviceName>s2</serviceName>
   </dataset>


   <dataset name="level2_b" serviceName="s2"  ID="nc/level2_b.nc" >
      <urlPath>nc/level2b_.nc</urlPath>
   </dataset>
Is it allowed for a dataset to have both a serviceName/urlPath pair as attributes AND as child elements? 
If so, which has priority?  (My guess is that none of these are allowed)

Examples:
<dataset name="level2_b" serviceName="s2" urlPath="nc/level2_b.nc" ID="nc/level2_b.nc" > 
      <serviceName>s3</serviceName>
   </dataset>
<dataset name="level2_b" serviceName="s2" urlPath="nc/level2_b.nc" ID="nc/level2_b.nc" > 
      <serviceName>s3</serviceName>
      <urlPath>data/level2b_.nc</urlPath>
   </dataset>
<dataset name="level2_b" serviceName="s2" urlPath="nc/level2_b.nc" ID="nc/level2_b.nc" > 
      <urlPath>data/examples/level2b_.nc</urlPath>
   </dataset>
Is a dataset allowed to have a serviceName/urlPathr via inheritance, attribute, or children and also have access element children? 
If so are there rules about precedence? Is it cumulative?

Examples:

 <dataset name="level1" ID="degenerate examples">

   <metadata inherited='true'>
      <serviceName>s1</serviceName>
   </metadata>
<dataset name="level2_a" urlPath="nc/level2_a.nc" ID="nc/ level2_a.nc"> <access serviceName="s2" urlPath="nc/level2_a" dataFormat="NetCDF" /> 
   </dataset>
<dataset name="level2_b" serviceName="s2" urlPath="nc/level2_b.nc" ID="nc/level2_b.nc" > <access serviceName="s3" urlPath="nc/level2_a" dataFormat="NetCDF" /> 
   </dataset>
<dataset name="level2_b" urlPath="nc/level2_b.nc" ID="nc/ level2_b.nc" > 
      <serviceName>s2</serviceName>
<access serviceName="s3" urlPath="nc/level2_a" dataFormat="NetCDF" /> 
   </dataset>

 </dataset>




Thanks for all of your help with this!


N


= = =
Nathan Potter                        ndp at opendap.org
OPeNDAP, Inc.                        +1.541.231.3317
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