|
1
|
<!--
|
|
2
|
* metacat.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: metacat.html 3074 2006-11-10 00:06:13Z perry $'
|
|
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">Metacat Server</p></td>
|
|
23
|
<td class="tablehead" colspan="2" align="right">
|
|
24
|
<a href="./domapi.html">Back</a> | <a href="./metacattour.html">Home</a> |
|
|
25
|
<a href="./metacatdb.html">Next</a>
|
|
26
|
</td>
|
|
27
|
</tr>
|
|
28
|
</table>
|
|
29
|
<P>The Metacat Server stores arbitrary XML
|
|
30
|
documents in a relational
|
|
31
|
database without foreknowledge of the document schema. It does this by implementing
|
|
32
|
the DOM within the table structure of the relational database.
|
|
33
|
Metacat also performs optimized free-text
|
|
34
|
and structured
|
|
35
|
searches across the entire document collection. Metacat provides
|
|
36
|
standardized interfaces to client software for document processing, storing
|
|
37
|
and searching.
|
|
38
|
|
|
39
|
<P> <img alt="Structural diagram of Metacat architecture" src="metacat.gif">
|
|
40
|
</p>
|
|
41
|
<p>
|
|
42
|
Metacat provides several means of access for communicating with the
|
|
43
|
server to access and submit metadata and data. First, users can
|
|
44
|
access the flexible web user interface. Second, the servlet can be
|
|
45
|
queried using basic HTML forms. Third, a
|
|
46
|
<a href="./clientapi.html">client API</a> exists for
|
|
47
|
writing software for accessing the server's contents.
|
|
48
|
</p>
|
|
49
|
<p>
|
|
50
|
When accessing the servlet interface either through 'GET' or 'POST'
|
|
51
|
HTTP requests, the request is directed to the appropriate handler based
|
|
52
|
on an 'action' parameter in the request. For example, using the
|
|
53
|
parameter 'action=getversion' one could construct an HTTP GET
|
|
54
|
request to retrive the Metacat version string:<br>
|
|
55
|
<code>http://some.metacat.host/context/metacat?action=getversion</code>
|
|
56
|
</p>
|
|
57
|
<p>
|
|
58
|
The complete list of "actions" which can be used in request to Metacat
|
|
59
|
along with the additional parameters associated with each action are
|
|
60
|
as follows.
|
|
61
|
</p>
|
|
62
|
<p> Primary actions for the most important features:<br>
|
|
63
|
<ul>
|
|
64
|
<li><code>action=login</code>
|
|
65
|
<ul>
|
|
66
|
<li><code>username</code></li>
|
|
67
|
<li><code>password</code></li>
|
|
68
|
</ul>
|
|
69
|
</li>
|
|
70
|
<li><code>action=logout</code>
|
|
71
|
</li>
|
|
72
|
<li><code>action=query</code>
|
|
73
|
<ul>
|
|
74
|
<li><code>meta_file_id</code></li>
|
|
75
|
<li><code>returndoctype</code></li>
|
|
76
|
<li><code>filterdoctype</code></li>
|
|
77
|
<li><code>returnfield</code></li>
|
|
78
|
<li><code>owner</code></li>
|
|
79
|
<li><code>site</code></li>
|
|
80
|
<li><code>operator</code></li>
|
|
81
|
<li><code>casesensitive</code></li>
|
|
82
|
<li><code>searchmode</code></li>
|
|
83
|
<li><code>anyfield</code></li>
|
|
84
|
<li><code>sessionid</code></li>
|
|
85
|
<li>Any other parameter passed in will be interpreted as a query
|
|
86
|
term unless it is listed in the 'query.ignored.params'
|
|
87
|
property in metacat.properties</li>
|
|
88
|
</ul>
|
|
89
|
</li>
|
|
90
|
<li><code>action=squery</code>
|
|
91
|
<ul>
|
|
92
|
<li><code>query</code></li>
|
|
93
|
<li><code>qformat</code></li>
|
|
94
|
</ul>
|
|
95
|
</li>
|
|
96
|
<li><code>action=read</code>
|
|
97
|
<ul>
|
|
98
|
<li><code>docid</code></li>
|
|
99
|
<li><code>qformat</code></li>
|
|
100
|
</ul>
|
|
101
|
</li>
|
|
102
|
<li><code>action=insert</code>
|
|
103
|
<ul>
|
|
104
|
<li><code>docid</code></li>
|
|
105
|
<li><code>doctext</code></li>
|
|
106
|
<li><code>dtdtext</code></li>
|
|
107
|
</ul>
|
|
108
|
</li>
|
|
109
|
<li><code>action=update</code>
|
|
110
|
<ul>
|
|
111
|
<li><code>docid</code></li>
|
|
112
|
<li><code>doctext</code></li>
|
|
113
|
<li><code>dtdtext</code></li>
|
|
114
|
</ul>
|
|
115
|
</li>
|
|
116
|
<li><code>action=delete</code>
|
|
117
|
<ul>
|
|
118
|
<li><code>docid</code></li>
|
|
119
|
</ul>
|
|
120
|
</li>
|
|
121
|
</ul>
|
|
122
|
Actions for less important features:<br>
|
|
123
|
<ul>
|
|
124
|
<li><code>action=spatial_query</code>
|
|
125
|
<ul>
|
|
126
|
<li><code>xmin</code></li>
|
|
127
|
<li><code>xmax</code></li>
|
|
128
|
<li><code>ymin</code></li>
|
|
129
|
<li><code>ymax</code></li>
|
|
130
|
<li><code>skin</code></li>
|
|
131
|
</ul>
|
|
132
|
</li>
|
|
133
|
<li><code>action=export</code>
|
|
134
|
<ul>
|
|
135
|
<li><code>docid</code></li>
|
|
136
|
</ul>
|
|
137
|
</li>
|
|
138
|
<li><code>action=readinlinedata</code>
|
|
139
|
<ul>
|
|
140
|
<li><code>inlinedataid</code></li>
|
|
141
|
</ul>
|
|
142
|
</li>
|
|
143
|
<li><code>action=validate</code>
|
|
144
|
<ul>
|
|
145
|
<li><code>valtext</code></li>
|
|
146
|
<li><code>docid</code></li>
|
|
147
|
</ul>
|
|
148
|
</li>
|
|
149
|
<li><code>action=setaccess</code>
|
|
150
|
<ul>
|
|
151
|
<li><code>docid</code></li>
|
|
152
|
<li><code>principal</code></li>
|
|
153
|
<li><code>permission</code></li>
|
|
154
|
<li><code>permType</code></li>
|
|
155
|
<li><code>permOrder</code></li>
|
|
156
|
<li><code>principal</code></li>
|
|
157
|
</ul>
|
|
158
|
</li>
|
|
159
|
<li><code>action=getaccesscontrol</code>
|
|
160
|
<ul>
|
|
161
|
<li><code>docid</code></li>
|
|
162
|
</ul>
|
|
163
|
</li>
|
|
164
|
<li><code>action=getprincipals</code>
|
|
165
|
</li>
|
|
166
|
<li><code>action=getdoctypes</code>
|
|
167
|
</li>
|
|
168
|
<li><code>action=getdtdschema</code>
|
|
169
|
<ul>
|
|
170
|
<li><code>doctype</code></li>
|
|
171
|
</ul>
|
|
172
|
</li>
|
|
173
|
<li><code>action=getlastdocid</code>
|
|
174
|
<ul>
|
|
175
|
<li><code>scope</code></li>
|
|
176
|
<li><code>username</code></li>
|
|
177
|
</ul>
|
|
178
|
</li>
|
|
179
|
<li><code>action=getrevisionanddoctype</code>
|
|
180
|
<ul>
|
|
181
|
<li><code>docid</code></li>
|
|
182
|
</ul>
|
|
183
|
</li>
|
|
184
|
<li><code>action=getversion</code>
|
|
185
|
</li>
|
|
186
|
<li><code>action=getlog</code>
|
|
187
|
<ul>
|
|
188
|
<li><code>ipaddress</code></li>
|
|
189
|
<li><code>principal</code></li>
|
|
190
|
<li><code>docid</code></li>
|
|
191
|
<li><code>event</code></li>
|
|
192
|
<li><code>start</code></li>
|
|
193
|
<li><code>end</code></li>
|
|
194
|
</ul>
|
|
195
|
</li>
|
|
196
|
<li><code>action=buildindex</code>
|
|
197
|
<ul>
|
|
198
|
<li><code>docid</code></li>
|
|
199
|
</ul>
|
|
200
|
</li>
|
|
201
|
<li><code>action=shrink</code>
|
|
202
|
</li>
|
|
203
|
</ul>
|
|
204
|
</p>
|
|
205
|
|
|
206
|
<br>
|
|
207
|
<a href="./domapi.html">Back</a> | <a href="./metacattour.html">Home</a> |
|
|
208
|
<a href="./metacatdb.html">Next</a>
|
|
209
|
</BODY>
|
|
210
|
</HTML>
|
|
211
|
|
