Project

General

Profile

Download (3.74 KB) Statistics
| Revision:

metacat/docs/user/metacatread.html @ 1936

1 878 berkley 
<!--
2 
  * metacatread.html
3 
  *
4 
  *      Authors: Jivka Bojilova
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: 2000 April 5
9 
  *      Version: 0.01
10 
  *    File Info: '$Id$'
11 
  *
12 
  * October Meeting SDSC, 2000
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">Reading a Document
23 
       from the Database</p></td>
24 
       <td class="tablehead" colspan="2" align="right">
25 
         <a href="./metacatquery.html">Back</a> | <a href="./metacattour.html">Home</a> |
26 
         <a href="./saxparser.html">Next</a>
27 
       </td>
28 
    </tr>
29 
  </table>
30 
  <p>Metacat allows clients to read a document in several different ways,
31 
  depending on how the client wants the document returned and how the client
32 
  wants to specify the requested document.  </p>
33 
  <P> <img alt="architecture diagram of the Metacat read process"
34 
           src="metadataread.gif">  </p>
35 881 berkley 
  <p>The documents are requested by the <b>docid</b> servlet parameter by specifying
36 
  the document id that you wish to read.<br>
37 878 berkley 
  </p>
38 881 berkley 
  <p>
39 
    Metacat allows the dynamic transformation of read documents through the use
40 
    of style-sets.  A style-set is an xsl stylesheet or a group of stylesheets
41 
    that are specified in a config file.  The following is an example of a style-set
42 
    config file:
43 
  </p>
44 
  <pre>
45 
    &lt;?xml version="1.0"?&gt;
46 
    &lt;style-set name="knb"&gt;
47 
      &lt;default-style&gt;http://http://server.domain.com/metacat/style/ascii-treeview.xsl&lt;/default-style&gt;
48 
      &lt;doctype publicid="-//NCEAS//resultset//EN"&gt;
49 
        &lt;target publicid="-//W3C//HTML//EN"&gt;http://http://server.domain.com/metacat/style/resultset.xsl&lt;/target&gt;
50 
      &lt;/doctype&gt;
51 
      &lt;doctype publicid="-//NCEAS//login//EN"&gt;
52 
        &lt;target publicid="-//W3C//HTML//EN"&gt;http://http://server.domain.com/metacat/style/login.xsl&lt;/target&gt;
53 
      &lt;/doctype&gt;
54 
      &lt;doctype publicid="-//NCEAS//eml-dataset-2.0//EN"&gt;
55 
        &lt;target publicid="-//W3C//HTML//EN"&gt;http://http://server.domain.com/metacat/style/eml-dataset-display.xsl&lt;/target&gt;
56 
      &lt;/doctype&gt;
57 
      &lt;doctype publicid="-//NCEAS//eml-dataset//EN"&gt;
58 
        &lt;target publicid="-//W3C//HTML//EN"&gt;http://http://server.domain.com/metacat/style/eml-dataset-display.xsl&lt;/target&gt;
59 
      &lt;/doctype&gt;
60 
      &lt;doctype publicid="-//NCEAS//eml-resource//EN"&gt;
61 
        &lt;target publicid="-//W3C//HTML//EN"&gt;http://http://server.domain.com/metacat/style/eml-dataset-display.xsl&lt;/target&gt;
62 
      &lt;/doctype&gt;
63 
      &lt;doctype publicid="-//ecoinformatics.org//eml-dataset-2.0.0beta4//EN"&gt;
64 
        &lt;target publicid="-//W3C//HTML//EN"&gt;http://http://server.domain.com/metacat/style/eml-dataset-display.xsl&lt;/target&gt;
65 
      &lt;/doctype&gt;
66 
    &lt;/style-set&gt;
67 
  </pre>
68 878 berkley 

      

      

        69
        
            881
        
        
            berkley
        
        
  <p>


      

      

        70
        
        
        
        
        
    Whenever a read action is requested from Metacat, you can also provide a qformat parameter.


      

      

        71
        
        
        
        
        
    This qformat parameter should be the name of the style-set that you wish to use


      

      

        72
        
        
        
        
        
    to transform the document you are requesting.  Note that the value that you set


      

      

        73
        
        
        
        
        
    qformat to must equal the &lt;style-set&gt; name parameter.


      

      

        74
        
            878
        
        
            berkley
        
        
  </p>


      

      

        75
        
        
        
        
        
  <p>


      

      

        76
        
            881
        
        
            berkley
        
        
    A default style-set can be set in the metacat.properties file.  If qformat


      

      

        77
        
        
        
        
        
    is set to 'html', Metacat will use the default.  If qformat is set to 'xml',


      

      

        78
        
        
        
        
        
    Metacat will return the XML document untransformed.


      

      

        79
        
            878
        
        
            berkley
        
        
  </p>


      

      

        80
        
        
        
        
        
  <br>


      

      

        81
        
        
        
        
        
  <a href="./metacatquery.html">Back</a> | <a href="./metacattour.html">Home</a> |


      

      

        82
        
        
        
        
        
  <a href="./saxparser.html">Next</a>


      

      

        83
        
        
        
        
        

      

      

        84
        
        
        
        
        
</BODY>


      

      

        85
        
        
        
        
        
</HTML>