| 1 |
2903
|
harris
|
<!--
|
| 2 |
|
|
* datafiles.html
|
| 3 |
|
|
*
|
| 4 |
|
|
* Authors: Chad Berkley
|
| 5 |
|
|
* Copyright: 2000 Regents of the University of California and the
|
| 6 |
|
|
* National Center for Ecological Analysis and Synthesis
|
| 7 |
|
|
* For Details: http://www.nceas.ucsb.edu/
|
| 8 |
|
|
* Created: 2001 January 23
|
| 9 |
|
|
* Version:
|
| 10 |
|
|
* File Info: '$ '
|
| 11 |
|
|
*
|
| 12 |
|
|
*
|
| 13 |
|
|
-->
|
| 14 |
|
|
<HTML>
|
| 15 |
|
|
<HEAD>
|
| 16 |
|
|
<TITLE>Metacat</TITLE>
|
| 17 |
|
|
<link rel="stylesheet" type="text/css" href="@docrooturl@default.css">
|
| 18 |
|
|
</HEAD>
|
| 19 |
|
|
<BODY>
|
| 20 |
|
|
<table width="100%">
|
| 21 |
|
|
<tr>
|
| 22 |
|
|
<td class="tablehead" colspan="2"><p class="label">Non-XML Data Files</p></td>
|
| 23 |
|
|
<td class="tablehead" colspan="2" align="right">
|
| 24 |
|
|
<a href="./replication.html">Back</a> | <a href="./metacattour.html">Home</a> |
|
| 25 |
3074
|
perry
|
<a href="./spatial_option.html">Next</a>
|
| 26 |
2903
|
harris
|
</td>
|
| 27 |
|
|
</tr>
|
| 28 |
|
|
</table>
|
| 29 |
|
|
|
| 30 |
|
|
|
| 31 |
2905
|
harris
|
<p><br>
|
| 32 |
|
|
<a href="./replication.html">Back</a> | <a href="./metacattour.html">Home</a> |
|
| 33 |
|
|
<a href="./properties.html">Next</a> </p>
|
| 34 |
|
|
<p><br>
|
| 35 |
|
|
</p>
|
| 36 |
|
|
<p><u>What is an LSID:</u></p>
|
| 37 |
|
|
<p>LSID's were designed to be a globally-recognized short identifiers for a complex
|
| 38 |
|
|
entities that are both computer and human readable.</p>
|
| 39 |
|
|
<p> </p>
|
| 40 |
|
|
<p><u>Why LSID's are in Metacat:</u></p>
|
| 41 |
|
|
<p>We chose to incorporate LSID's in metacat so as to support a globally accepted
|
| 42 |
|
|
standard for identifying biological entities instead of using a proprietary
|
| 43 |
|
|
scheme.
|
| 44 |
|
|
By doing this we have exposed data and metadata stored in Metacat through
|
| 45 |
|
|
a variety of LSID clients. Additionally, the LSID support in Metacat has
|
| 46 |
|
|
been implemented as a series Simple Object Access Protocol (SOAP) interfaces
|
| 47 |
|
|
with the intent of providing an easily modifiable system.</p>
|
| 48 |
|
|
<p> </p>
|
| 49 |
|
|
<p><u>What you get with Metacat's LSID Support:</u></p>
|
| 50 |
|
|
<p>By enabling the Metacat LSID support you will be able to use the LSID clients
|
| 51 |
|
|
and notation to query Metacat for data and metadata. An example of an LSID
|
| 52 |
|
|
client is the <a href="http://lsid.sourceforge.net/">LSID Launchpad</a>. Furthermore,
|
| 53 |
|
|
one can use the LSID notation directly in the Metacat http query to access
|
| 54 |
|
|
data and metadata within a Metacat.
|
| 55 |
|
|
For example, a document (tao.12039.1) stored in a Metacat available at: http://qtz.homelinux.com:9999
|
| 56 |
|
|
can be accessed by the following http Metacat queries:</p>
|
| 57 |
|
|
<br>
|
| 58 |
|
|
|
| 59 |
|
|
<pre>http://qtz.homelinux.com:9999/authority/data?lsid=urn:lsid:sulphur.ecoinformatics.org:tao:12039:1</pre>
|
| 60 |
|
|
<pre>http://qtz.homelinux.com:9999/authority/metadata?lsid=urn:lsid:sulphur.ecoinformatics.org:tao:12039:1</pre>
|
| 61 |
|
|
<br>
|
| 62 |
|
|
|
| 63 |
|
|
<p>The first query returns the data associated with that document and the second
|
| 64 |
|
|
query returns the metadata. Notice that the periods in the Metacat document
|
| 65 |
|
|
ID have been replaced with colons. Also notice the host urn attribute
|
| 66 |
|
|
(urn:lsid:sulphur.ecoinformatics.org), this host needs to be set as a SRV record
|
| 67 |
|
|
as DNS entry on the DNS server for ecoinformatics.org. To use LSID support
|
| 68 |
|
|
in Metacat the Metacat administrator does need to have access to the DNS server
|
| 69 |
|
|
for the domain hosting the Metacat so that he/she can modify the SRV record(s).
|
| 70 |
|
|
The Metacat build.proprties LSID attributes for the above example are: </p>
|
| 71 |
|
|
<pre>authority.context=authority</pre>
|
| 72 |
|
|
<pre>config.lsidauthority=sulphur.ecoinformatics.org</pre>
|
| 73 |
|
|
<p>** the SRV record for sulphur.ecoinformatics.org points to qtz.homelinux.com
|
| 74 |
|
|
on port 9999</p>
|
| 75 |
|
|
<p> </p>
|
| 76 |
|
|
<p> </p>
|
| 77 |
|
|
<p> </p>
|
| 78 |
2903
|
harris
|
</BODY>
|
| 79 |
2905
|
harris
|
|
| 80 |
2903
|
harris
|
</HTML>
|