1 /* This file is part of Pazpar2.
2 Copyright (C) 2006-2008 Index Data
4 Pazpar2 is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Pazpar2 is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 #include <libxslt/xsltutils.h>
25 #include <libxslt/transform.h>
27 #include <yaz/comstack.h>
28 #include <yaz/pquery.h>
30 #include <yaz/yaz-ccl.h>
32 #include "termlists.h"
33 #include "relevance.h"
36 #include "pazpar2_config.h"
37 #include "parameters.h"
44 enum pazpar2_error_code {
48 PAZPAR2_MISSING_PARAMETER,
49 PAZPAR2_MALFORMED_PARAMETER_VALUE,
50 PAZPAR2_MALFORMED_PARAMETER_ENCODING,
51 PAZPAR2_MALFORMED_SETTING,
52 PAZPAR2_HITCOUNTS_FAILED,
53 PAZPAR2_RECORD_MISSING,
55 PAZPAR2_CONFIG_TARGET,
57 PAZPAR2_NOT_IMPLEMENTED,
62 // Represents a (virtual) database on a host
68 struct zr_explain *explain;
69 struct setting **settings;
70 struct database *next;
73 struct database_criterion_value {
75 struct database_criterion_value *next;
78 struct database_criterion {
80 struct database_criterion_value *values;
81 struct database_criterion *next;
84 // Normalization filter. Turns incoming record into internal representation
85 // Simple sequence of stylesheets run in series.
86 struct database_retrievalmap {
87 xsltStylesheet *stylesheet;
88 struct database_retrievalmap *next;
91 // Represents a database as viewed from one session, possibly with settings overriden
93 struct session_database
95 struct database *database;
96 struct setting **settings;
98 struct database_retrievalmap *map;
99 struct session_database *next;
104 #define SESSION_WATCH_SHOW 0
105 #define SESSION_WATCH_RECORD 1
106 #define SESSION_WATCH_MAX 1
108 #define SESSION_MAX_TERMLISTS 10
110 typedef void (*session_watchfun)(void *data);
112 struct named_termlist
115 struct termlist *termlist;
118 struct session_watchentry {
120 http_channel_observer_t obs;
121 session_watchfun fun;
126 struct session_database *databases; // All databases, settings overriden
127 struct client *clients; // Clients connected for current search
129 NMEM session_nmem; // Nmem for session-permanent storage
130 NMEM nmem; // Nmem for each operation (i.e. search, result set, etc)
131 WRBUF wrbuf; // Wrbuf for scratch(i.e. search)
133 struct named_termlist termlists[SESSION_MAX_TERMLISTS];
134 struct relevance *relevance;
135 struct reclist *reclist;
136 struct session_watchentry watchlist[SESSION_WATCH_MAX + 1];
137 int expected_maxrecs;
145 int num_no_connection;
147 int num_initializing;
157 struct hitsbytarget {
167 struct hitsbytarget *hitsbytarget(struct session *s, int *count, NMEM nmem);
168 int select_targets(struct session *se, struct database_criterion *crit);
169 struct session *new_session(NMEM nmem);
170 void destroy_session(struct session *s);
171 void session_init_databases(struct session *s);
172 int load_targets(struct session *s, const char *fn);
173 void statistics(struct session *s, struct statistics *stat);
174 enum pazpar2_error_code search(struct session *s, char *query,
175 char *filter, const char **addinfo);
176 struct record_cluster **show(struct session *s, struct reclist_sortparms *sp, int start,
177 int *num, int *total, int *sumhits, NMEM nmem_show);
178 struct record_cluster *show_single(struct session *s, const char *id);
179 struct termlist_score **termlist(struct session *s, const char *name, int *num);
180 int session_set_watch(struct session *s, int what, session_watchfun fun, void *data, struct http_channel *c);
181 int session_active_clients(struct session *s);
182 void session_apply_setting(struct session *se, char *dbname, char *setting, char *value);
183 const char *session_setting_oneval(struct session_database *db, int offset);
185 int start_http_listener(void);
186 void start_proxy(void);
188 void pazpar2_add_channel(IOCHAN c);
189 void pazpar2_event_loop(void);
191 int host_getaddrinfo(struct host *host);
193 xmlDoc *normalize_record(struct session_database *sdb, struct session *se,
195 xmlDoc *record_to_xml(struct session_database *sdb, Z_External *rec);
197 struct record *ingest_record(struct client *cl, Z_External *rec,
199 void session_alert_watch(struct session *s, int what);
200 void pull_terms(NMEM nmem, struct ccl_rpn_node *n, char **termlist, int *num);
207 * indent-tabs-mode: nil
209 * vim: shiftwidth=4 tabstop=8 expandtab