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<html><head><meta charset="ISO-8859-1"><title>7.Searching the OAI database by Z39.50 protocol</title><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot"><link rel="home" href="index.html" title="Zebra - User's Guide and Reference"><link rel="up" href="tutorial.html" title="Chapter3.Tutorial"><link rel="prev" href="tutorial-oai-sru-yazfrontend.html" title="6.Setting up a correct SRU web service"><link rel="next" href="architecture.html" title="Chapter4.Overview of Zebra Architecture"></head><body><link rel="stylesheet" type="text/css" href="common/style1.css"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">7.Searching the <acronym class="acronym">OAI</acronym> database by <acronym class="acronym">Z39.50</acronym> protocol</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="tutorial-oai-sru-yazfrontend.html">Prev</a></td><th width="60%" align="center">Chapter3.Tutorial</th><td width="20%" align="right"><a accesskey="n" href="architecture.html">Next</a></td></tr></table><hr></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="tutorial-oai-z3950"></a>7.Searching the <acronym class="acronym">OAI</acronym> database by <acronym class="acronym">Z39.50</acronym> protocol</h2></div></div></div><p>
In this section we repeat the searches and presents we have done so
far using the binary <acronym class="acronym">Z39.50</acronym> protocol, you can use any
<acronym class="acronym">Z39.50</acronym> client.
For instance, you can use the demo command-line client that comes
with <span class="application">YAZ</span>.
</p><p>
Connecting to the server is done by the command
</p><pre class="screen">
yaz-client localhost:9999
</pre><p>
</p><p>
When the client has connected, you can type:
</p><pre class="screen">
Z> format xml
Z> querytype prefix
Z> elements oai
Z> find the
Z> show 1+1
</pre><p>
</p><p>
<acronym class="acronym">Z39.50</acronym> presents using presentation stylesheets:
</p><pre class="screen">
Z> elements dc
Z> show 2+1
Z> elements zebra
Z> show 3+1
</pre><p>
</p><p>
<acronym class="acronym">Z39.50</acronym> buildin Zebra presents (in this configuration only if
started without yaz-frontendserver):
</p><pre class="screen">
Z> elements zebra::meta
Z> show 4+1
Z> elements zebra::meta::sysno
Z> show 5+1
Z> format sutrs
Z> show 5+1
Z> format xml
Z> elements zebra::index
Z> show 6+1
Z> elements zebra::snippet
Z> show 7+1
Z> elements zebra::facet::any:w
Z> show 1+1
Z> elements zebra::facet::publisher:p,title:p
Z> show 1+1
</pre><p>
</p><p>
<acronym class="acronym">Z39.50</acronym> searches targeted at specific indexes and boolean
combinations of these can be issued as well.
</p><pre class="screen">
Z> elements dc
Z> find @attr 1=oai_identifier @attr 4=3 oai:caltechcstr.library.caltech.edu:4
Z> show 1+1
Z> find @attr 1=oai_datestamp @attr 4=3 2001-04-20
Z> show 1+1
Z> find @attr 1=oai_setspec @attr 4=3 7374617475733D756E707562
Z> show 1+1
Z> find @attr 1=title communication
Z> show 1+1
Z> find @attr 1=identifier @attr 4=3
http://resolver.caltech.edu/CaltechCSTR:1986.5228-tr-86
Z> show 1+1
</pre><p>
etc, etc.
</p><p>
<acronym class="acronym">Z39.50</acronym> scan:
</p><pre class="screen">
yaz-client localhost:9999
Z> format xml
Z> querytype prefix
Z> scan @attr 1=oai_identifier @attr 4=3 oai
Z> scan @attr 1=oai_datestamp @attr 4=3 1
Z> scan @attr 1=oai_setspec @attr 4=3 2000
Z>
Z> scan @attr 1=title communication
Z> scan @attr 1=identifier @attr 4=3 a
</pre><p>
</p><p>
<acronym class="acronym">Z39.50</acronym> search using server-side CQL conversion:
</p><pre class="screen">
Z> format xml
Z> querytype cql
Z> elements dc
Z>
Z> find harry
Z>
Z> find dc.creator = the
Z> find dc.creator = the
Z> find dc.title = the
Z>
Z> find dc.description < the
Z> find dc.title > some
Z>
Z> find dc.identifier="http://resolver.caltech.edu/CaltechCSTR:1978.2276-tr-78"
Z> find dc.relation = something
</pre><p>
</p><div class="tip" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Tip</h3><p>
<acronym class="acronym">Z39.50</acronym> scan using server side CQL conversion -
unfortunately, this will _never_ work as it is not supported by the
<acronym class="acronym">Z39.50</acronym> standard.
If you want to use scan using server side CQL conversion, you need to
make an SRW connection using yaz-client, or a
SRU connection using REST Web Services - any browser will do.
</p></div><div class="tip" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Tip</h3><p>
All indexes defined by 'type="0"' in the
indexing style sheet must be searched using the '@attr 4=3'
structure attribute instruction.
</p></div><p>
Notice that searching and scan on indexes
<code class="literal">contributor</code>, <code class="literal">language</code>,
<code class="literal">rights</code>, and <code class="literal">source</code>
might fail, simply because none of the records in the small example set
have these fields set, and consequently, these indexes might not
been created.
</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="tutorial-oai-sru-yazfrontend.html">Prev</a></td><td width="20%" align="center"><a accesskey="u" href="tutorial.html">Up</a></td><td width="40%" align="right"><a accesskey="n" href="architecture.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">6.Setting up a correct <acronym class="acronym">SRU</acronym> web service</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">Chapter4.Overview of <span class="application">Zebra</span> Architecture</td></tr></table></div></body></html>
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