ZOOM_connection_addinfo(c)
ZOOM_connection_addinfo(c)
ZOOM_connection_diagset(c);
+ZOOM_connection_save_apdu_wrbuf
ZOOM_diag_str(error)
ZOOM_resultset_record_immediate(s, pos)
ZOOM_resultset_cache_reset(r)
ZOOM_options_get_bool(opt, name, defa)
ZOOM_options_get_int(opt, name, defa)
ZOOM_options_set_int(opt, name, value)
-ZOOM_connection_scan1(ZOOM_connection c, ZOOM_query startterm)
ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn)
-->
<chapter id="zoom"><title>ZOOM</title>
<literal>sru=get,http://sru.miketaylor.org.uk:80/sru.pl</literal>
</para>
<para>
- <ulink url="&url.solr;">SOLR</ulink> protocol support was added to YAZ in version 4.1.0,
- as a dialect of a SRU protocol, since both are HTTP based protocols.
+ <ulink url="&url.solr;">SOLR</ulink> protocol support was added to
+ YAZ in version 4.1.0, as a dialect of a SRU protocol, since both are
+ HTTP based protocols.
</para>
<para>
The lack of a simple Z39.50 client API for &yaz; has become more
<synopsis>
#include <yaz/zoom.h>
- ZOOM_connection ZOOM_connection_new (const char *host, int portnum);
+ ZOOM_connection ZOOM_connection_new(const char *host, int portnum);
- ZOOM_connection ZOOM_connection_create (ZOOM_options options);
+ ZOOM_connection ZOOM_connection_create(ZOOM_options options);
void ZOOM_connection_connect(ZOOM_connection c, const char *host,
int portnum);
int ZOOM_query_cql(ZOOM_query s, const char *str);
int ZOOM_query_sortby(ZOOM_query q, const char *criteria);
+
+ int ZOOM_query_sortby2(ZOOM_query q, const char *strategy,
+ const char *criteria);
</synopsis>
<para>
Create query objects using <function>ZOOM_query_create</function>
sort criteria using the same string notation for sort as offered by
the <link linkend="sortspec">YAZ client</link>.
</para>
- <sect2 id="zoom.sort.behavior"><title>Protocol behavior</title>
- <para>
- The query object is just an interface for the member Query
- in the SearchRequest. The sortby-function is an interface to the
- sortSequence member of the SortRequest.
- </para>
- </sect2>
+ <para>
+ <function>ZOOM_query_sortby2</function> is similar to
+ <function>ZOOM_query_sortby</function> but allows a strategy for
+ sorting. The reason for the strategy parameter is that some
+ protocols offers multiple ways of performing sorting.
+ For example, Z39.50 has the standard sort, which is performed after
+ search on an existing result set.
+ It's also possible to use CQL in Z39.50 as the query type and use
+ CQL's SORTBY keyword. Finally, Index Data's
+ Zebra server also allows sorting to be specified as part of RPN (Type 7).
+ </para>
+ <table id="zoom-sort-strategy" frame="top">
+ <title>ZOOM sort strategy</title>
+ <tgroup cols="2">
+ <colspec colwidth="2*" colname="name"/>
+ <colspec colwidth="5*" colname="description"/>
+ <thead>
+ <row>
+ <entry>Name</entry>
+ <entry>Description</entry>
+ </row>
+ </thead>
+ <tbody>
+ <row>
+ <entry>z39.50</entry><entry>Z39.50 resultset sort</entry>
+ </row>
+ <row>
+ <entry>type7</entry><entry>Sorting embedded in RPN(Type-7)</entry>
+ </row>
+ <row>
+ <entry>cql</entry><entry>CQL SORTBY</entry>
+ </row>
+ <row>
+ <entry>sru11</entry><entry>SRU sortKeys element</entry>
+ </row>
+ <row>
+ <entry>solr</entry><entry>Solr sort</entry>
+ </row>
+ <row>
+ <entry>embed</entry><entry>type7 for Z39.50, cql for SRU,
+ solr for Solr protocol</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
</sect1>
<sect1 id="zoom.resultsets"><title>Result sets</title>
<para>
</sect1>
<sect1 id="zoom.facets"><title>Facets</title>
<para>
- Facets operations is not part of the official ZOOM specification, but is an Index Data extension
- for YAZ-based Z39.50 targets or <ulink url="&url.solr;">SOLR</ulink> targets.
- In case the target can and is requested to return facets, using a result set the ZOOM client
- can request one or all facet fields. Using a facet field the client can request the term count and
- then interate over the terms.
+ Facets operations is not part of the official ZOOM specification, but
+ is an Index Data extension for YAZ-based Z39.50 targets or
+ <ulink url="&url.solr;">SOLR</ulink> targets.
+ In case the target can and is requested to return facets, using a
+ result set the ZOOM client can request one or all facet fields.
+ Using a facet field the client can request the term count and then
+ interate over the terms.
</para>
<synopsis>
ZOOM_facet_field *ZOOM_resultset_facets(ZOOM_resultset r);
+
const char ** ZOOM_resultset_facets_names(ZOOM_resultset r);
- ZOOM_facet_field ZOOM_resultset_get_facet_field(ZOOM_resultset r, const char *facet_name);
- ZOOM_facet_field ZOOM_resultset_get_facet_field_by_index(ZOOM_resultset r, int pos);
+
+ ZOOM_facet_field ZOOM_resultset_get_facet_field(ZOOM_resultset r,
+ const char *facet_name);
+
+ ZOOM_facet_field ZOOM_resultset_get_facet_field_by_index(ZOOM_resultset r,
+ int pos);
+
size_t ZOOM_resultset_facets_size(ZOOM_resultset r);
const char *ZOOM_facet_field_name(ZOOM_facet_field facet_field);
+
size_t ZOOM_facet_field_term_count(ZOOM_facet_field facet_field);
- const char *ZOOM_facet_field_get_term(ZOOM_facet_field facet_field, size_t idx, int *freq);
+
+ const char *ZOOM_facet_field_get_term(ZOOM_facet_field facet_field,
+ size_t idx, int *freq);
</synopsis>
<para>
- References to temporary structures are returned by all functions. They are only valid as long the Result set is valid.
+ References to temporary structures are returned by all functions.
+ They are only valid as long the Result set is valid.
<function>ZOOM_resultset_get_facet_field</function> or
<function>ZOOM_resultset_get_facet_field_by_index</function>.
<function>ZOOM_resultset_facets</function>.
</para>
<para id="zoom.resultset.get_facet_field">
A single Facet field is returned by function
- <function>ZOOM_resultset_get_facet_field</function> or <function>ZOOM_resultset_get_facet_field_by_index</function> that takes a
- result set and facet name or positive index respectively. First facet has position zero.
- If no facet could be obtained (invalid name or index out of bounds) <literal>NULL</literal> is returned.
+ <function>ZOOM_resultset_get_facet_field</function> or
+ <function>ZOOM_resultset_get_facet_field_by_index</function> that takes
+ a result set and facet name or positive index respectively. First
+ facet has position zero. If no facet could be obtained (invalid name
+ or index out of bounds) <literal>NULL</literal> is returned.
</para>
<para id="zoom.resultset.facets">
- An array of facets field can be returned by <function>ZOOM_resultset_facets</function>. The length of the array is
- given by <function>ZOOM_resultset_facets_size</function>. The array is zero-based and last entry will be at
+ An array of facets field can be returned by
+ <function>ZOOM_resultset_facets</function>. The length of the array is
+ given by <function>ZOOM_resultset_facets_size</function>. The array is
+ zero-based and last entry will be at
<function>ZOOM_resultset_facets_size(result_set)</function>-1.
</para>
<para id="zoom.resultset.facets_names">
- It is possible to interate over facets by name, by calling <function>ZOOM_resultset_facets_names</function>.
- This will return an const array of char * where each string can be used as parameter for
- <function>ZOOM_resultset_get_facet_field</function>.
+ It is possible to interate over facets by name, by calling
+ <function>ZOOM_resultset_facets_names</function>.
+ This will return an const array of char * where each string can be used
+ as parameter for <function>ZOOM_resultset_get_facet_field</function>.
</para>
<para>
- Function <function>ZOOM_facet_field_name</function> gets the request facet name from a returned facet field.
+ Function <function>ZOOM_facet_field_name</function> gets the request
+ facet name from a returned facet field.
</para>
<para>
- Function <function>ZOOM_facet_field_get_term</function> returns the idx'th term and term count for a facet field.
- Idx must between 0 and <function>ZOOM_facet_field_term_count</function>-1, otherwise the returned reference will be
- <literal>NULL</literal>. On a valid idx, the value of the freq reference will be the term count.
- The *freq parameter must be valid pointer to integer.
+ Function <function>ZOOM_facet_field_get_term</function> returns the
+ idx'th term and term count for a facet field.
+ Idx must between 0 and
+ <function>ZOOM_facet_field_term_count</function>-1, otherwise the
+ returned reference will be <literal>NULL</literal>. On a valid idx, the
+ value of the freq reference will be the term count.
+ The <literal>freq</literal> parameter must be valid pointer to integer.
</para>
</sect1>
<sect1 id="zoom.scan"><title>Scan</title>
projects / yaz-moved-to-github.git / blobdiff