-<!-- $Id: tools.xml,v 1.46 2005-04-26 19:51:31 adam Exp $ -->
+<!-- $Id: tools.xml,v 1.49 2006-04-25 11:25:08 marc Exp $ -->
<chapter id="tools"><title>Supporting Tools</title>
<para>
<literal>@and</literal>. Its semantics are described in
section 3.7.2 (Proximity) of Z39.50 the standard itself, which
can be read on-line at
- <ulink url="http://lcweb.loc.gov/z3950/agency/markup/09.html"/>
+ <ulink url="&url.z39.50.proximity;"/>
</para>
<para>
In PQF, the proximity operation is represented by a sequence
</itemizedlist>
(The numeric values of the relation and well-known unit-code
parameters are taken straight from
- <ulink url="http://lcweb.loc.gov/z3950/agency/asn1.html#ProximityOperator"
+ <ulink url="&url.z39.50.proximity.asn1;"
>the ASN.1</ulink> of the proximity structure in the standard.)
</para>
</sect3>
</table>
</para>
<para>
- The complete list of Bib-1 attributes can be found
- <ulink url="http://lcweb.loc.gov/z3950/agency/defns/bib1.html">
- here
- </ulink>.
+ Refer to the complete
+ <ulink url="&url.z39.50.attset.bib1;">list of Bib-1 attributes</ulink>
</para>
<para>
It is also possible to specify non-numeric attribute values,
</sect2>
<sect2 id="tools.cql"><title>CQL</title>
<para>
- <ulink url="http://www.loc.gov/z3950/agency/zing/cql/">CQL</ulink>
+ <ulink url="&url.cql;">CQL</ulink>
- Common Query Language - was defined for the
- <ulink url="http://www.loc.gov/z3950/agency/zing/srw/">SRW</ulink>
- protocol.
+ <ulink url="&url.srw;">SRW</ulink> protocol.
In many ways CQL has a similar syntax to CCL.
The objective of CQL is different. Where CCL aims to be
an end-user language, CQL is <emphasis>the</emphasis> protocol
<tip>
<para>
If you are new to CQL, read the
- <ulink url="http://zing.z3950.org/cql/intro.html">Gentle
- Introduction</ulink>.
+ <ulink url="&url.cql.intro;">Gentle Introduction</ulink>.
</para>
</tip>
<para>
<listitem>
<para>
The parser converts CQL to
- <ulink url="http://www.loc.gov/z3950/agency/zing/cql/xcql.html">
- XCQL</ulink>.
+ <ulink url="&url.xcql;">XCQL</ulink>.
XCQL is an XML representation of CQL.
XCQL is part of the SRW specification. However, since SRU
supports CQL only, we don't expect XCQL to be widely used.
returns a non-zero SRW error code; otherwise zero is returned
(conversion successful). The meanings of the numeric error
codes are listed in the SRW specifications at
- <ulink url="http://www.loc.gov/srw/diagnostic-list.html"/>
+ <ulink url="&url.sru.diagnostics.list;"/>
</para>
<para>
If conversion fails, more information can be obtained by calling
<para>
again, corresponding to the specific OIDs defined by the standard.
Refer to the
- <ulink url="http://lcweb.loc.gov/z3950/agency/defns/oids.html">
+ <ulink url="&url.z39.50.oids;">
Registry of Z39.50 Object Identifiers</ulink> for the
whole list.
</para>