<listitem>
<para>
Allows you to specify an arbitrary PQF query language substring.
- The provided string is prefixed the user's query after it has been
+ The provided string is prefixed to the user's query after it has been
normalized to PQF internally in pazpar2.
This allows you to attach complex 'filters' to queries for a given
target, sometimes necessary to select sub-catalogs
<literal>@and @attr 1=30 @attr 2=3 %Y %%</literal>
would search for current year combined with the original PQF (%%).
</para>
+ <para>
+ This setting can also be used as more general alternative to
+ pz:pqf_prefix -- a way of embedding the submitted query
+ anywhere in the string rather than appending it to prefix. For
+ example, if it is desired to omit all records satisfying the
+ query <literal>@attr 1=pica.bib 0007</literal> then this
+ subquery can be combined with the submitted query as the second
+ argument of <literal>@andnot</literal> by using the
+ pz:pqf_strftime value <literal>@not %% @attr 1=pica.bib
+ 0007</literal>.
+ </para>
</listitem>
</varlistentry>
<listitem>
<para>
Specifies attributes for limiting a search to a field - using
- the limit parameter for search. In some cases the mapping of
+ the limit parameter for search. It can be used to filter locally
+ or remotely (search in a target). In some cases the mapping of
a field to a value is identical to an existing cclmap field; in
other cases the field must be specified in a different way - for
example to match a complete field (rather than parts of a subfield).
</para>
<para>
- The value of limitmap may have one of two forms: referral to
- an exisiting CCL field or a raw PQF string. Leading string
- determines type; either <literal>ccl:</literal> for CCL field or
- <literal>rpn:</literal> for PQF/RPN.
+ The value of limitmap may have one of three forms: referral to
+ an existing CCL field, a raw PQF string or a local limit. Leading string
+ determines type; either <literal>ccl:</literal> for CCL field,
+ <literal>rpn:</literal> for PQF/RPN, or <literal>local:</literal>
+ for filtering in Pazpar2. The local filtering may be followed
+ by a field a metadata field (default is to use the name of the
+ limitmap itself).
</para>
<note>
<para>
The limitmap facility is supported for Pazpar2 version 1.6.0.
+ Local filtering is supported in Pazpar2 1.6.6.
</para>
</note>
</listitem>