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Add matchorig, matchsynonyms, and keepsynonyms options to contrib/dict_xsyn.

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Sergey Karpov
This commit is contained in:
Tom Lane
2009-08-05 18:06:49 +00:00
parent 23dc89d2c3
commit 25bd9ce31b
4 changed files with 283 additions and 53 deletions
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51
doc/src/sgml/dict-xsyn.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/dict-xsyn.sgml,v 1.2 2007/12/06 04:12:10 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/dict-xsyn.sgml,v 1.3 2009/08/05 18:06:49 tgl Exp $ -->
<sect1 id="dict-xsyn">
<title>dict_xsyn</title>
@ -23,9 +23,26 @@
<itemizedlist>
<listitem>
<para>
<literal>keeporig</> controls whether the original word is included (if
<literal>true</>), or only its synonyms (if <literal>false</>). Default
is <literal>true</>.
<literal>matchorig</> controls whether the original word is accepted by
the dictionary. Default is <literal>true</>.
</para>
</listitem>
<listitem>
<para>
<literal>matchsynonyms</> controls whether the synonyms are
accepted by the dictionary. Default is <literal>false</>.
</para>
</listitem>
<listitem>
<para>
<literal>keeporig</> controls whether the original word is included in
the dictionary's output. Default is <literal>true</>.
</para>
</listitem>
<listitem>
<para>
<literal>keepsynonyms</> controls whether the synonyms are included in
the dictionary's output. Default is <literal>true</>.
</para>
</listitem>
<listitem>
@ -87,13 +104,37 @@ ALTER TEXT SEARCH DICTIONARY
To test the dictionary, you can try
<programlisting>
mydb=# SELECT ts_lexize('xsyn', 'word');
ts_lexize
-----------------------
{syn1,syn2,syn3}
mydb# ALTER TEXT SEARCH DICTIONARY xsyn (RULES='my_rules', KEEPORIG=true);
ALTER TEXT SEARCH DICTIONARY
mydb=# SELECT ts_lexize('xsyn', 'word');
ts_lexize
-----------------------
{word,syn1,syn2,syn3}
mydb# ALTER TEXT SEARCH DICTIONARY xsyn (RULES='my_rules', KEEPORIG=false, MATCHSYNONYMS=true);
ALTER TEXT SEARCH DICTIONARY
mydb=# SELECT ts_lexize('xsyn', 'syn1');
ts_lexize
-----------------------
{syn1,syn2,syn3}
mydb# ALTER TEXT SEARCH DICTIONARY xsyn (RULES='my_rules', KEEPORIG=true, MATCHORIG=false, KEEPSYNONYMS=false);
ALTER TEXT SEARCH DICTIONARY
mydb=# SELECT ts_lexize('xsyn', 'syn1');
ts_lexize
-----------------------
{word}
</programlisting>
but real-world usage will involve including it in a text search
Real-world usage will involve including it in a text search
configuration as described in <xref linkend="textsearch">.
That might look like this: