Author: wyoung
Date: Tue Feb 17 19:05:24 2009
New Revision: 2447
URL: http://svn.gna.org/viewcvs/mysqlpp?rev=2447&view=rev
Log:
More userman clarifications
Modified:
trunk/doc/userman/ssqls.dbx
Modified: trunk/doc/userman/ssqls.dbx
URL:
http://svn.gna.org/viewcvs/mysqlpp/trunk/doc/userman/ssqls.dbx?rev=2447&r1=2446&r2=2447&view=diff
==============================================================================
--- trunk/doc/userman/ssqls.dbx (original)
+++ trunk/doc/userman/ssqls.dbx Tue Feb 17 19:05:24 2009
@@ -294,19 +294,24 @@
<sect2 id="ssqls-comparing">
- <title>Less-than-comparable</title>
-
- <para>SSQLS structures can be sorted and stored in STL associative
- containers as demonstrated in the next example. This is
+ <title>Storing SSQLSes in Associative Containers</title>
+
+ <para>One of the requirements of STL’s associative
+ containers on data stored in them is that the data type
+ has to be less-than comparable. That is, it has to have
+ an <function>operator <</function> defined.
+ SSQLS does optionally give you this, as demonstrated in
<filename>examples/ssqls4.cpp</filename>:</para>
<programlisting><xi:include href="ssqls4.txt" parse="text"
xmlns:xi="http://www.w3.org/2001/XInclude"/></programlisting>
- <para>The <methodname>find()</methodname> call works because
- of the way the SSQLS was declared. It’s properly covered
- elsewhere, but suffice it to say, the "1" in the declaration
- of <classname>stock</classname> above tells it that only the
+ <para>The <methodname>find()</methodname> call works because of
+ the way the SSQLS was declared. It’s properly covered
+ <link linkend="ssqls-compare-init">elsewhere</link>,
+ but suffice it to say, the “1” in the
+ declaration of <classname>stock</classname> <link
+ linkend="ssqls-retrieving">above</link> tells it that only the
first field needs to be checked in comparing two SSQLSes. In
database terms, this makes it the primary key. Therefore, when
searching for a match, our exemplar only had to have its first
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