[eml-dev] EML access and application behavior (metacat)

[Jing Tao]

Hi, Margaret:

See my comments under the text.

Thanks,

Jing

Jing Tao
National Center for Ecological
Analysis and Synthesis (NCEAS)
735 State St. Suite 204
Santa Barbara, CA 93101

On Wed, 17 Sep 2008, Margaret O'Brien wrote:

> Hi Jing -
> I am updating the EML documentation for access. Per our discussion last week, 
> I just wanted to confirm the planned behavior of metacat with regard to 
> access trees in EML.
>
> 1. in EML 2.0.1, access is located at eml/dataset/access, and authors may 
> also have been putting in additionalMetadata/access as well, accompanied by 
> <describes>any_node_id</describes>
> And you plan that metacat will
> a. honor the eml/dataset/access tree (for all metadata and data) and
> b. when it finds an access tree in an additionMetadata section, it will 
> recognize it only if it references an id on a distribution element that is a 
> descendant of dataTable  -- or is it honoring a reference to any distribution 
> id (ie, res:distribution).
>
Metacat currently is doing the way you described (maybe a little 
different).
If no additionalMetadata/access in eml, the eml/dataset/access will be 
applied to EML document itself(metadata) and all data files.

If there is additionalMetadata/access in eml and the id in element 
<describes> references a distribution element that is a descendant of 
dataTable (or other entities), the rules of 
additionalMetadata/access will be applied to the data table. The 
eml/dataset/access will be applied to EML document itself and other data 
files (if there is any) which are not in the <describes> in 
<additionalMetadata>.

> 2. in EML 2.1.0, access will be found at eml/access and 
> /eml/dataset/dataTable/distribution/physical/access
> And metacat will
> a. continue to honor eml/access for all metadata and data, and
> b. not recognize access trees found under additionalMetadata. Does that mean 
> it will ignore additionalMetadata/metadata/access trees that were honored in 
> 2.0.1, or can EML authors continue to create these?
>
In the eml 2.1.0, my guess 
/eml/dataset/dataTable/distribution/physical/access is the replacement of 
additionalMetadata/access in eml 2.0.1. So there is no reason to continue 
to use additionalMetadata/access to controll the access of the data files 
in eml 2.1.0. So i think metacat can ingore additionalMetadata/metadata/access
trees in eml 2.1.0 documents. What do 
you think?

> thanks -
> Margaret
>
> -- 
>
>
> ========================
> Margaret O'Brien
> Information Management
> Santa Barbara Coastal LTER Marine Science Institute
> University of California
> Santa Barbara, CA  93106-6150
>
> 805-893-2071
> mob at icess.ucsb.edu
> http://sbc.lternet.edu
> ========================
>
>
>