2 * Copyright (C) 2004-2008 Georgia Public Library Service
3 * Copyright (C) 2007-2008 Equinox Software, Inc.
4 * Mike Rylander <miker@esilibrary.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
18 DROP SCHEMA IF EXISTS metabib CASCADE;
21 CREATE SCHEMA metabib;
23 CREATE TABLE metabib.metarecord (
24 id BIGSERIAL PRIMARY KEY,
25 fingerprint TEXT NOT NULL,
29 CREATE INDEX metabib_metarecord_master_record_idx ON metabib.metarecord (master_record);
30 CREATE INDEX metabib_metarecord_fingerprint_idx ON metabib.metarecord (fingerprint);
32 CREATE TABLE metabib.identifier_field_entry (
33 id BIGSERIAL PRIMARY KEY,
34 source BIGINT NOT NULL,
37 index_vector tsvector NOT NULL
39 CREATE TRIGGER metabib_identifier_field_entry_fti_trigger
40 BEFORE UPDATE OR INSERT ON metabib.identifier_field_entry
41 FOR EACH ROW EXECUTE PROCEDURE oils_tsearch2('identifier');
43 CREATE INDEX metabib_identifier_field_entry_index_vector_idx ON metabib.identifier_field_entry USING GIST (index_vector);
44 CREATE INDEX metabib_identifier_field_entry_value_idx ON metabib.identifier_field_entry (SUBSTRING(value,1,1024)) WHERE index_vector = ''::TSVECTOR;
45 CREATE INDEX metabib_identifier_field_entry_source_idx ON metabib.identifier_field_entry (source);
47 CREATE TABLE metabib.combined_identifier_field_entry (
48 record BIGINT NOT NULL,
49 metabib_field INT NULL,
50 index_vector tsvector NOT NULL
52 CREATE UNIQUE INDEX metabib_combined_identifier_field_entry_fakepk_idx ON metabib.combined_identifier_field_entry (record, COALESCE(metabib_field::TEXT,''));
53 CREATE INDEX metabib_combined_identifier_field_entry_index_vector_idx ON metabib.combined_identifier_field_entry USING GIST (index_vector);
54 CREATE INDEX metabib_combined_identifier_field_source_idx ON metabib.combined_identifier_field_entry (metabib_field);
56 CREATE TABLE metabib.title_field_entry (
57 id BIGSERIAL PRIMARY KEY,
58 source BIGINT NOT NULL,
61 index_vector tsvector NOT NULL
63 CREATE TRIGGER metabib_title_field_entry_fti_trigger
64 BEFORE UPDATE OR INSERT ON metabib.title_field_entry
65 FOR EACH ROW EXECUTE PROCEDURE oils_tsearch2('title');
67 CREATE INDEX metabib_title_field_entry_index_vector_idx ON metabib.title_field_entry USING GIST (index_vector);
68 CREATE INDEX metabib_title_field_entry_value_idx ON metabib.title_field_entry (SUBSTRING(value,1,1024)) WHERE index_vector = ''::TSVECTOR;
69 CREATE INDEX metabib_title_field_entry_source_idx ON metabib.title_field_entry (source);
71 CREATE TABLE metabib.combined_title_field_entry (
72 record BIGINT NOT NULL,
73 metabib_field INT NULL,
74 index_vector tsvector NOT NULL
76 CREATE UNIQUE INDEX metabib_combined_title_field_entry_fakepk_idx ON metabib.combined_title_field_entry (record, COALESCE(metabib_field::TEXT,''));
77 CREATE INDEX metabib_combined_title_field_entry_index_vector_idx ON metabib.combined_title_field_entry USING GIST (index_vector);
78 CREATE INDEX metabib_combined_title_field_source_idx ON metabib.combined_title_field_entry (metabib_field);
80 CREATE TABLE metabib.author_field_entry (
81 id BIGSERIAL PRIMARY KEY,
82 source BIGINT NOT NULL,
85 index_vector tsvector NOT NULL
87 CREATE TRIGGER metabib_author_field_entry_fti_trigger
88 BEFORE UPDATE OR INSERT ON metabib.author_field_entry
89 FOR EACH ROW EXECUTE PROCEDURE oils_tsearch2('author');
91 CREATE INDEX metabib_author_field_entry_index_vector_idx ON metabib.author_field_entry USING GIST (index_vector);
92 CREATE INDEX metabib_author_field_entry_value_idx ON metabib.author_field_entry (SUBSTRING(value,1,1024)) WHERE index_vector = ''::TSVECTOR;
93 CREATE INDEX metabib_author_field_entry_source_idx ON metabib.author_field_entry (source);
95 CREATE TABLE metabib.combined_author_field_entry (
96 record BIGINT NOT NULL,
97 metabib_field INT NULL,
98 index_vector tsvector NOT NULL
100 CREATE UNIQUE INDEX metabib_combined_author_field_entry_fakepk_idx ON metabib.combined_author_field_entry (record, COALESCE(metabib_field::TEXT,''));
101 CREATE INDEX metabib_combined_author_field_entry_index_vector_idx ON metabib.combined_author_field_entry USING GIST (index_vector);
102 CREATE INDEX metabib_combined_author_field_source_idx ON metabib.combined_author_field_entry (metabib_field);
104 CREATE TABLE metabib.subject_field_entry (
105 id BIGSERIAL PRIMARY KEY,
106 source BIGINT NOT NULL,
109 index_vector tsvector NOT NULL
111 CREATE TRIGGER metabib_subject_field_entry_fti_trigger
112 BEFORE UPDATE OR INSERT ON metabib.subject_field_entry
113 FOR EACH ROW EXECUTE PROCEDURE oils_tsearch2('subject');
115 CREATE INDEX metabib_subject_field_entry_index_vector_idx ON metabib.subject_field_entry USING GIST (index_vector);
116 CREATE INDEX metabib_subject_field_entry_value_idx ON metabib.subject_field_entry (SUBSTRING(value,1,1024)) WHERE index_vector = ''::TSVECTOR;
117 CREATE INDEX metabib_subject_field_entry_source_idx ON metabib.subject_field_entry (source);
119 CREATE TABLE metabib.combined_subject_field_entry (
120 record BIGINT NOT NULL,
121 metabib_field INT NULL,
122 index_vector tsvector NOT NULL
124 CREATE UNIQUE INDEX metabib_combined_subject_field_entry_fakepk_idx ON metabib.combined_subject_field_entry (record, COALESCE(metabib_field::TEXT,''));
125 CREATE INDEX metabib_combined_subject_field_entry_index_vector_idx ON metabib.combined_subject_field_entry USING GIST (index_vector);
126 CREATE INDEX metabib_combined_subject_field_source_idx ON metabib.combined_subject_field_entry (metabib_field);
128 CREATE TABLE metabib.keyword_field_entry (
129 id BIGSERIAL PRIMARY KEY,
130 source BIGINT NOT NULL,
133 index_vector tsvector NOT NULL
135 CREATE TRIGGER metabib_keyword_field_entry_fti_trigger
136 BEFORE UPDATE OR INSERT ON metabib.keyword_field_entry
137 FOR EACH ROW EXECUTE PROCEDURE oils_tsearch2('keyword');
139 CREATE INDEX metabib_keyword_field_entry_index_vector_idx ON metabib.keyword_field_entry USING GIST (index_vector);
140 CREATE INDEX metabib_keyword_field_entry_value_idx ON metabib.keyword_field_entry (SUBSTRING(value,1,1024)) WHERE index_vector = ''::TSVECTOR;
141 CREATE INDEX metabib_keyword_field_entry_source_idx ON metabib.keyword_field_entry (source);
143 CREATE TABLE metabib.combined_keyword_field_entry (
144 record BIGINT NOT NULL,
145 metabib_field INT NULL,
146 index_vector tsvector NOT NULL
148 CREATE UNIQUE INDEX metabib_combined_keyword_field_entry_fakepk_idx ON metabib.combined_keyword_field_entry (record, COALESCE(metabib_field::TEXT,''));
149 CREATE INDEX metabib_combined_keyword_field_entry_index_vector_idx ON metabib.combined_keyword_field_entry USING GIST (index_vector);
150 CREATE INDEX metabib_combined_keyword_field_source_idx ON metabib.combined_keyword_field_entry (metabib_field);
152 CREATE TABLE metabib.series_field_entry (
153 id BIGSERIAL PRIMARY KEY,
154 source BIGINT NOT NULL,
157 index_vector tsvector NOT NULL
159 CREATE TRIGGER metabib_series_field_entry_fti_trigger
160 BEFORE UPDATE OR INSERT ON metabib.series_field_entry
161 FOR EACH ROW EXECUTE PROCEDURE oils_tsearch2('series');
163 CREATE INDEX metabib_series_field_entry_index_vector_idx ON metabib.series_field_entry USING GIST (index_vector);
164 CREATE INDEX metabib_series_field_entry_value_idx ON metabib.series_field_entry (SUBSTRING(value,1,1024)) WHERE index_vector = ''::TSVECTOR;
165 CREATE INDEX metabib_series_field_entry_source_idx ON metabib.series_field_entry (source);
167 CREATE TABLE metabib.combined_series_field_entry (
168 record BIGINT NOT NULL,
169 metabib_field INT NULL,
170 index_vector tsvector NOT NULL
172 CREATE UNIQUE INDEX metabib_combined_series_field_entry_fakepk_idx ON metabib.combined_series_field_entry (record, COALESCE(metabib_field::TEXT,''));
173 CREATE INDEX metabib_combined_series_field_entry_index_vector_idx ON metabib.combined_series_field_entry USING GIST (index_vector);
174 CREATE INDEX metabib_combined_series_field_source_idx ON metabib.combined_series_field_entry (metabib_field);
176 CREATE TABLE metabib.facet_entry (
177 id BIGSERIAL PRIMARY KEY,
178 source BIGINT NOT NULL,
182 CREATE INDEX metabib_facet_entry_field_idx ON metabib.facet_entry (field);
183 CREATE INDEX metabib_facet_entry_value_idx ON metabib.facet_entry (SUBSTRING(value,1,1024));
184 CREATE INDEX metabib_facet_entry_source_idx ON metabib.facet_entry (source);
186 CREATE TABLE metabib.browse_entry (
187 id BIGSERIAL PRIMARY KEY,
189 index_vector tsvector,
190 sort_value TEXT NOT NULL,
191 UNIQUE(sort_value, value)
195 CREATE INDEX browse_entry_sort_value_idx
196 ON metabib.browse_entry USING BTREE (sort_value);
198 CREATE INDEX metabib_browse_entry_index_vector_idx ON metabib.browse_entry USING GIN (index_vector);
199 CREATE TRIGGER metabib_browse_entry_fti_trigger
200 BEFORE INSERT OR UPDATE ON metabib.browse_entry
201 FOR EACH ROW EXECUTE PROCEDURE oils_tsearch2('keyword');
204 CREATE TABLE metabib.browse_entry_def_map (
205 id BIGSERIAL PRIMARY KEY,
206 entry BIGINT REFERENCES metabib.browse_entry (id),
207 def INT REFERENCES config.metabib_field (id),
208 source BIGINT REFERENCES biblio.record_entry (id),
209 authority BIGINT REFERENCES authority.record_entry (id) ON DELETE SET NULL
211 CREATE INDEX browse_entry_def_map_def_idx ON metabib.browse_entry_def_map (def);
212 CREATE INDEX browse_entry_def_map_entry_idx ON metabib.browse_entry_def_map (entry);
213 CREATE INDEX browse_entry_def_map_source_idx ON metabib.browse_entry_def_map (source);
217 CREATE OR REPLACE FUNCTION metabib.facet_normalize_trigger () RETURNS TRIGGER AS $$
222 facet_text := NEW.value;
225 SELECT n.func AS func,
226 n.param_count AS param_count,
228 FROM config.index_normalizer n
229 JOIN config.metabib_field_index_norm_map m ON (m.norm = n.id)
230 WHERE m.field = NEW.field AND m.pos < 0
233 EXECUTE 'SELECT ' || normalizer.func || '(' ||
234 quote_literal( facet_text ) ||
236 WHEN normalizer.param_count > 0
237 THEN ',' || REPLACE(REPLACE(BTRIM(normalizer.params,'[]'),E'\'',E'\\\''),E'"',E'\'')
244 NEW.value = facet_text;
250 CREATE TRIGGER facet_normalize_tgr
251 BEFORE UPDATE OR INSERT ON metabib.facet_entry
252 FOR EACH ROW EXECUTE PROCEDURE metabib.facet_normalize_trigger();
254 CREATE OR REPLACE FUNCTION evergreen.facet_force_nfc() RETURNS TRIGGER AS $$
256 NEW.value := force_unicode_normal_form(NEW.value,'NFC');
261 CREATE TRIGGER facet_force_nfc_tgr
262 BEFORE UPDATE OR INSERT ON metabib.facet_entry
263 FOR EACH ROW EXECUTE PROCEDURE evergreen.facet_force_nfc();
265 CREATE TABLE metabib.record_attr (
266 id BIGINT PRIMARY KEY REFERENCES biblio.record_entry (id) ON DELETE CASCADE,
267 attrs HSTORE NOT NULL DEFAULT ''::HSTORE
269 CREATE INDEX metabib_svf_attrs_idx ON metabib.record_attr USING GIST (attrs);
270 CREATE INDEX metabib_svf_date1_idx ON metabib.record_attr ((attrs->'date1'));
271 CREATE INDEX metabib_svf_dates_idx ON metabib.record_attr ((attrs->'date1'),(attrs->'date2'));
273 -- Back-compat view ... we're moving to an HSTORE world
274 CREATE TYPE metabib.rec_desc_type AS (
292 CREATE VIEW metabib.rec_descriptor AS
295 (populate_record(NULL::metabib.rec_desc_type, attrs)).*
296 FROM metabib.record_attr;
298 -- Use a sequence that matches previous version, for easier upgrading.
299 CREATE SEQUENCE metabib.full_rec_id_seq;
301 CREATE TABLE metabib.real_full_rec (
302 id BIGINT NOT NULL DEFAULT NEXTVAL('metabib.full_rec_id_seq'::REGCLASS),
303 record BIGINT NOT NULL,
304 tag CHAR(3) NOT NULL,
309 index_vector tsvector NOT NULL
311 ALTER TABLE metabib.real_full_rec ADD PRIMARY KEY (id);
313 CREATE INDEX metabib_full_rec_tag_subfield_idx ON metabib.real_full_rec (tag,subfield);
314 CREATE INDEX metabib_full_rec_value_idx ON metabib.real_full_rec (substring(value,1,1024));
315 /* Enable LIKE to use an index for database clusters with locales other than C or POSIX */
316 CREATE INDEX metabib_full_rec_value_tpo_index ON metabib.real_full_rec (substring(value,1,1024) text_pattern_ops);
317 CREATE INDEX metabib_full_rec_record_idx ON metabib.real_full_rec (record);
318 CREATE INDEX metabib_full_rec_index_vector_idx ON metabib.real_full_rec USING GIST (index_vector);
319 CREATE INDEX metabib_full_rec_isxn_caseless_idx
320 ON metabib.real_full_rec (LOWER(value))
321 WHERE tag IN ('020', '022', '024');
322 -- This next index might fully supplant the one above, but leaving both for now.
323 -- (they are not too large)
324 -- The reason we need this index is to ensure that the query parser always
325 -- prefers this index over the simpler tag/subfield index, as this greatly
326 -- increases Vandelay overlay speed for these identifiers, especially when
327 -- a record has many of these fields (around > 4-6 seems like the cutoff
328 -- on at least one PG9.1 system)
329 -- A similar index could be added for other fields (e.g. 010), but one should
330 -- leave out the LOWER() in all other cases.
331 -- TODO: verify whether we can discard the non tag/subfield/substring version
332 -- above (metabib_full_rec_isxn_caseless_idx)
333 CREATE INDEX metabib_full_rec_02x_tag_subfield_lower_substring
334 ON metabib.real_full_rec (tag, subfield, LOWER(substring(value, 1, 1024)))
335 WHERE tag IN ('020', '022', '024');
338 CREATE TRIGGER metabib_full_rec_fti_trigger
339 BEFORE UPDATE OR INSERT ON metabib.real_full_rec
340 FOR EACH ROW EXECUTE PROCEDURE oils_tsearch2('default');
342 CREATE OR REPLACE VIEW metabib.full_rec AS
349 SUBSTRING(value,1,1024) AS value,
351 FROM metabib.real_full_rec;
353 CREATE OR REPLACE RULE metabib_full_rec_insert_rule
354 AS ON INSERT TO metabib.full_rec
356 INSERT INTO metabib.real_full_rec VALUES (
357 COALESCE(NEW.id, NEXTVAL('metabib.full_rec_id_seq'::REGCLASS)),
367 CREATE OR REPLACE RULE metabib_full_rec_update_rule
368 AS ON UPDATE TO metabib.full_rec
370 UPDATE metabib.real_full_rec SET
376 subfield = NEW.subfield,
378 index_vector = NEW.index_vector
381 CREATE OR REPLACE RULE metabib_full_rec_delete_rule
382 AS ON DELETE TO metabib.full_rec
384 DELETE FROM metabib.real_full_rec WHERE id = OLD.id;
386 CREATE TABLE metabib.metarecord_source_map (
387 id BIGSERIAL PRIMARY KEY,
388 metarecord BIGINT NOT NULL,
389 source BIGINT NOT NULL
391 CREATE INDEX metabib_metarecord_source_map_metarecord_idx ON metabib.metarecord_source_map (metarecord);
392 CREATE INDEX metabib_metarecord_source_map_source_record_idx ON metabib.metarecord_source_map (source);
394 CREATE TYPE metabib.field_entry_template AS (
407 CREATE OR REPLACE FUNCTION biblio.extract_metabib_field_entry ( rid BIGINT, default_joiner TEXT ) RETURNS SETOF metabib.field_entry_template AS $func$
409 bib biblio.record_entry%ROWTYPE;
410 idx config.metabib_field%ROWTYPE;
411 xfrm config.xml_transform%ROWTYPE;
413 transformed_xml TEXT;
415 xml_node_list TEXT[];
421 joiner TEXT := default_joiner; -- XXX will index defs supply a joiner?
423 authority_link BIGINT;
424 output_row metabib.field_entry_template%ROWTYPE;
427 -- Start out with no field-use bools set
428 output_row.browse_field = FALSE;
429 output_row.facet_field = FALSE;
430 output_row.search_field = FALSE;
433 SELECT INTO bib * FROM biblio.record_entry WHERE id = rid;
435 -- Loop over the indexing entries
436 FOR idx IN SELECT * FROM config.metabib_field ORDER BY format LOOP
438 SELECT INTO xfrm * from config.xml_transform WHERE name = idx.format;
440 -- See if we can skip the XSLT ... it's expensive
441 IF prev_xfrm IS NULL OR prev_xfrm <> xfrm.name THEN
442 -- Can't skip the transform
443 IF xfrm.xslt <> '---' THEN
444 transformed_xml := oils_xslt_process(bib.marc,xfrm.xslt);
446 transformed_xml := bib.marc;
449 prev_xfrm := xfrm.name;
452 xml_node_list := oils_xpath( idx.xpath, transformed_xml, ARRAY[ARRAY[xfrm.prefix, xfrm.namespace_uri]] );
455 FOR xml_node IN SELECT x FROM unnest(xml_node_list) AS x LOOP
456 CONTINUE WHEN xml_node !~ E'^\\s*<';
458 curr_text := ARRAY_TO_STRING(
459 oils_xpath( '//text()',
460 REGEXP_REPLACE( -- This escapes all &s not followed by "amp;". Data ise returned from oils_xpath (above) in UTF-8, not entity encoded
461 REGEXP_REPLACE( -- This escapes embeded <s
463 $re$(>[^<]+)(<)([^>]+<)$re$,
475 CONTINUE WHEN curr_text IS NULL OR curr_text = '';
477 IF raw_text IS NOT NULL THEN
478 raw_text := raw_text || joiner;
481 raw_text := COALESCE(raw_text,'') || curr_text;
483 -- autosuggest/metabib.browse_entry
484 IF idx.browse_field THEN
486 IF idx.browse_xpath IS NOT NULL AND idx.browse_xpath <> '' THEN
487 browse_text := oils_xpath_string( idx.browse_xpath, xml_node, joiner, ARRAY[ARRAY[xfrm.prefix, xfrm.namespace_uri]] );
489 browse_text := curr_text;
492 IF idx.browse_sort_xpath IS NOT NULL AND
493 idx.browse_sort_xpath <> '' THEN
495 sort_value := oils_xpath_string(
496 idx.browse_sort_xpath, xml_node, joiner,
497 ARRAY[ARRAY[xfrm.prefix, xfrm.namespace_uri]]
500 sort_value := browse_text;
503 output_row.field_class = idx.field_class;
504 output_row.field = idx.id;
505 output_row.source = rid;
506 output_row.value = BTRIM(REGEXP_REPLACE(browse_text, E'\\s+', ' ', 'g'));
507 output_row.sort_value :=
508 public.search_normalize(sort_value);
510 output_row.authority := NULL;
512 IF idx.authority_xpath IS NOT NULL AND idx.authority_xpath <> '' THEN
513 authority_text := oils_xpath_string(
514 idx.authority_xpath, xml_node, joiner,
516 ARRAY[xfrm.prefix, xfrm.namespace_uri],
517 ARRAY['xlink','http://www.w3.org/1999/xlink']
521 IF authority_text ~ '^\d+$' THEN
522 authority_link := authority_text::BIGINT;
523 PERFORM * FROM authority.record_entry WHERE id = authority_link;
525 output_row.authority := authority_link;
531 output_row.browse_field = TRUE;
532 RETURN NEXT output_row;
533 output_row.browse_field = FALSE;
534 output_row.sort_value := NULL;
537 -- insert raw node text for faceting
538 IF idx.facet_field THEN
540 IF idx.facet_xpath IS NOT NULL AND idx.facet_xpath <> '' THEN
541 facet_text := oils_xpath_string( idx.facet_xpath, xml_node, joiner, ARRAY[ARRAY[xfrm.prefix, xfrm.namespace_uri]] );
543 facet_text := curr_text;
546 output_row.field_class = idx.field_class;
547 output_row.field = -1 * idx.id;
548 output_row.source = rid;
549 output_row.value = BTRIM(REGEXP_REPLACE(facet_text, E'\\s+', ' ', 'g'));
551 output_row.facet_field = TRUE;
552 RETURN NEXT output_row;
553 output_row.facet_field = FALSE;
558 CONTINUE WHEN raw_text IS NULL OR raw_text = '';
560 -- insert combined node text for searching
561 IF idx.search_field THEN
562 output_row.field_class = idx.field_class;
563 output_row.field = idx.id;
564 output_row.source = rid;
565 output_row.value = BTRIM(REGEXP_REPLACE(raw_text, E'\\s+', ' ', 'g'));
567 output_row.search_field = TRUE;
568 RETURN NEXT output_row;
569 output_row.search_field = FALSE;
576 $func$ LANGUAGE PLPGSQL;
578 CREATE OR REPLACE FUNCTION metabib.update_combined_index_vectors(bib_id BIGINT) RETURNS VOID AS $func$
580 DELETE FROM metabib.combined_keyword_field_entry WHERE record = bib_id;
581 INSERT INTO metabib.combined_keyword_field_entry(record, metabib_field, index_vector)
582 SELECT bib_id, field, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
583 FROM metabib.keyword_field_entry WHERE source = bib_id GROUP BY field;
584 INSERT INTO metabib.combined_keyword_field_entry(record, metabib_field, index_vector)
585 SELECT bib_id, NULL, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
586 FROM metabib.keyword_field_entry WHERE source = bib_id;
588 DELETE FROM metabib.combined_title_field_entry WHERE record = bib_id;
589 INSERT INTO metabib.combined_title_field_entry(record, metabib_field, index_vector)
590 SELECT bib_id, field, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
591 FROM metabib.title_field_entry WHERE source = bib_id GROUP BY field;
592 INSERT INTO metabib.combined_title_field_entry(record, metabib_field, index_vector)
593 SELECT bib_id, NULL, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
594 FROM metabib.title_field_entry WHERE source = bib_id;
596 DELETE FROM metabib.combined_author_field_entry WHERE record = bib_id;
597 INSERT INTO metabib.combined_author_field_entry(record, metabib_field, index_vector)
598 SELECT bib_id, field, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
599 FROM metabib.author_field_entry WHERE source = bib_id GROUP BY field;
600 INSERT INTO metabib.combined_author_field_entry(record, metabib_field, index_vector)
601 SELECT bib_id, NULL, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
602 FROM metabib.author_field_entry WHERE source = bib_id;
604 DELETE FROM metabib.combined_subject_field_entry WHERE record = bib_id;
605 INSERT INTO metabib.combined_subject_field_entry(record, metabib_field, index_vector)
606 SELECT bib_id, field, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
607 FROM metabib.subject_field_entry WHERE source = bib_id GROUP BY field;
608 INSERT INTO metabib.combined_subject_field_entry(record, metabib_field, index_vector)
609 SELECT bib_id, NULL, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
610 FROM metabib.subject_field_entry WHERE source = bib_id;
612 DELETE FROM metabib.combined_series_field_entry WHERE record = bib_id;
613 INSERT INTO metabib.combined_series_field_entry(record, metabib_field, index_vector)
614 SELECT bib_id, field, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
615 FROM metabib.series_field_entry WHERE source = bib_id GROUP BY field;
616 INSERT INTO metabib.combined_series_field_entry(record, metabib_field, index_vector)
617 SELECT bib_id, NULL, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
618 FROM metabib.series_field_entry WHERE source = bib_id;
620 DELETE FROM metabib.combined_identifier_field_entry WHERE record = bib_id;
621 INSERT INTO metabib.combined_identifier_field_entry(record, metabib_field, index_vector)
622 SELECT bib_id, field, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
623 FROM metabib.identifier_field_entry WHERE source = bib_id GROUP BY field;
624 INSERT INTO metabib.combined_identifier_field_entry(record, metabib_field, index_vector)
625 SELECT bib_id, NULL, strip(COALESCE(string_agg(index_vector::TEXT,' '),'')::tsvector)
626 FROM metabib.identifier_field_entry WHERE source = bib_id;
629 $func$ LANGUAGE PLPGSQL;
631 CREATE OR REPLACE FUNCTION metabib.reingest_metabib_field_entries( bib_id BIGINT, skip_facet BOOL DEFAULT FALSE, skip_browse BOOL DEFAULT FALSE, skip_search BOOL DEFAULT FALSE ) RETURNS VOID AS $func$
634 ind_data metabib.field_entry_template%ROWTYPE;
635 mbe_row metabib.browse_entry%ROWTYPE;
643 SELECT COALESCE(NULLIF(skip_facet, FALSE), EXISTS (SELECT enabled FROM config.internal_flag WHERE name = 'ingest.skip_facet_indexing' AND enabled)) INTO b_skip_facet;
644 SELECT COALESCE(NULLIF(skip_browse, FALSE), EXISTS (SELECT enabled FROM config.internal_flag WHERE name = 'ingest.skip_browse_indexing' AND enabled)) INTO b_skip_browse;
645 SELECT COALESCE(NULLIF(skip_search, FALSE), EXISTS (SELECT enabled FROM config.internal_flag WHERE name = 'ingest.skip_search_indexing' AND enabled)) INTO b_skip_search;
647 PERFORM * FROM config.internal_flag WHERE name = 'ingest.assume_inserts_only' AND enabled;
649 IF NOT b_skip_search THEN
650 FOR fclass IN SELECT * FROM config.metabib_class LOOP
651 -- RAISE NOTICE 'Emptying out %', fclass.name;
652 EXECUTE $$DELETE FROM metabib.$$ || fclass.name || $$_field_entry WHERE source = $$ || bib_id;
655 IF NOT b_skip_facet THEN
656 DELETE FROM metabib.facet_entry WHERE source = bib_id;
658 IF NOT b_skip_browse THEN
659 DELETE FROM metabib.browse_entry_def_map WHERE source = bib_id;
663 FOR ind_data IN SELECT * FROM biblio.extract_metabib_field_entry( bib_id ) LOOP
664 IF ind_data.field < 0 THEN
665 ind_data.field = -1 * ind_data.field;
668 IF ind_data.facet_field AND NOT b_skip_facet THEN
669 INSERT INTO metabib.facet_entry (field, source, value)
670 VALUES (ind_data.field, ind_data.source, ind_data.value);
673 IF ind_data.browse_field AND NOT b_skip_browse THEN
674 -- A caveat about this SELECT: this should take care of replacing
675 -- old mbe rows when data changes, but not if normalization (by
676 -- which I mean specifically the output of
677 -- evergreen.oils_tsearch2()) changes. It may or may not be
678 -- expensive to add a comparison of index_vector to index_vector
679 -- to the WHERE clause below.
681 value_prepped := metabib.browse_normalize(ind_data.value, ind_data.field);
682 SELECT INTO mbe_row * FROM metabib.browse_entry
683 WHERE value = value_prepped AND sort_value = ind_data.sort_value;
686 mbe_id := mbe_row.id;
688 INSERT INTO metabib.browse_entry
689 ( value, sort_value ) VALUES
690 ( value_prepped, ind_data.sort_value );
692 mbe_id := CURRVAL('metabib.browse_entry_id_seq'::REGCLASS);
695 INSERT INTO metabib.browse_entry_def_map (entry, def, source, authority)
696 VALUES (mbe_id, ind_data.field, ind_data.source, ind_data.authority);
699 -- Avoid inserting duplicate rows, but retain granularity of being
700 -- able to search browse fields with "starts with" type operators
701 -- (for example, for titles of songs in music albums)
702 IF (ind_data.search_field OR ind_data.browse_field) AND NOT b_skip_search THEN
703 EXECUTE 'SELECT 1 FROM metabib.' || ind_data.field_class ||
704 '_field_entry WHERE field = $1 AND source = $2 AND value = $3'
705 INTO mbe_id USING ind_data.field, ind_data.source, ind_data.value;
706 -- RAISE NOTICE 'Search for an already matching row returned %', mbe_id;
707 IF mbe_id IS NULL THEN
709 INSERT INTO metabib.$$ || ind_data.field_class || $$_field_entry (field, source, value)
711 quote_literal(ind_data.field) || $$, $$ ||
712 quote_literal(ind_data.source) || $$, $$ ||
713 quote_literal(ind_data.value) ||
720 IF NOT b_skip_search THEN
721 PERFORM metabib.update_combined_index_vectors(bib_id);
726 $func$ LANGUAGE PLPGSQL;
728 -- default to a space joiner
729 CREATE OR REPLACE FUNCTION biblio.extract_metabib_field_entry ( BIGINT ) RETURNS SETOF metabib.field_entry_template AS $func$
730 SELECT * FROM biblio.extract_metabib_field_entry($1, ' ');
733 CREATE OR REPLACE FUNCTION authority.flatten_marc ( rid BIGINT ) RETURNS SETOF authority.full_rec AS $func$
735 auth authority.record_entry%ROWTYPE;
736 output authority.full_rec%ROWTYPE;
739 SELECT INTO auth * FROM authority.record_entry WHERE id = rid;
741 FOR field IN SELECT * FROM vandelay.flatten_marc( auth.marc ) LOOP
742 output.record := rid;
743 output.ind1 := field.ind1;
744 output.ind2 := field.ind2;
745 output.tag := field.tag;
746 output.subfield := field.subfield;
747 output.value := field.value;
752 $func$ LANGUAGE PLPGSQL;
754 CREATE OR REPLACE FUNCTION biblio.flatten_marc ( rid BIGINT ) RETURNS SETOF metabib.full_rec AS $func$
756 bib biblio.record_entry%ROWTYPE;
757 output metabib.full_rec%ROWTYPE;
760 SELECT INTO bib * FROM biblio.record_entry WHERE id = rid;
762 FOR field IN SELECT * FROM vandelay.flatten_marc( bib.marc ) LOOP
763 output.record := rid;
764 output.ind1 := field.ind1;
765 output.ind2 := field.ind2;
766 output.tag := field.tag;
767 output.subfield := field.subfield;
768 output.value := field.value;
773 $func$ LANGUAGE PLPGSQL;
775 CREATE OR REPLACE FUNCTION vandelay.marc21_record_type( marc TEXT ) RETURNS config.marc21_rec_type_map AS $func$
782 retval config.marc21_rec_type_map%ROWTYPE;
784 ldr := oils_xpath_string( '//*[local-name()="leader"]', marc );
786 IF ldr IS NULL OR ldr = '' THEN
787 SELECT * INTO retval FROM config.marc21_rec_type_map WHERE code = 'BKS';
791 SELECT * INTO tval_rec FROM config.marc21_ff_pos_map WHERE fixed_field = 'Type' LIMIT 1; -- They're all the same
792 SELECT * INTO bval_rec FROM config.marc21_ff_pos_map WHERE fixed_field = 'BLvl' LIMIT 1; -- They're all the same
795 tval := SUBSTRING( ldr, tval_rec.start_pos + 1, tval_rec.length );
796 bval := SUBSTRING( ldr, bval_rec.start_pos + 1, bval_rec.length );
798 -- RAISE NOTICE 'type %, blvl %, ldr %', tval, bval, ldr;
800 SELECT * INTO retval FROM config.marc21_rec_type_map WHERE type_val LIKE '%' || tval || '%' AND blvl_val LIKE '%' || bval || '%';
803 IF retval.code IS NULL THEN
804 SELECT * INTO retval FROM config.marc21_rec_type_map WHERE code = 'BKS';
809 $func$ LANGUAGE PLPGSQL;
811 CREATE OR REPLACE FUNCTION biblio.marc21_record_type( rid BIGINT ) RETURNS config.marc21_rec_type_map AS $func$
812 SELECT * FROM vandelay.marc21_record_type( (SELECT marc FROM biblio.record_entry WHERE id = $1) );
815 CREATE OR REPLACE FUNCTION vandelay.marc21_extract_fixed_field( marc TEXT, ff TEXT ) RETURNS TEXT AS $func$
822 rtype := (vandelay.marc21_record_type( marc )).code;
823 FOR ff_pos IN SELECT * FROM config.marc21_ff_pos_map WHERE fixed_field = ff AND rec_type = rtype ORDER BY tag DESC LOOP
824 IF ff_pos.tag = 'ldr' THEN
825 val := oils_xpath_string('//*[local-name()="leader"]', marc);
826 IF val IS NOT NULL THEN
827 val := SUBSTRING( val, ff_pos.start_pos + 1, ff_pos.length );
831 FOR tag_data IN SELECT value FROM UNNEST( oils_xpath( '//*[@tag="' || UPPER(ff_pos.tag) || '"]/text()', marc ) ) x(value) LOOP
832 val := SUBSTRING( tag_data.value, ff_pos.start_pos + 1, ff_pos.length );
836 val := REPEAT( ff_pos.default_val, ff_pos.length );
842 $func$ LANGUAGE PLPGSQL;
844 CREATE OR REPLACE FUNCTION biblio.marc21_extract_fixed_field( rid BIGINT, ff TEXT ) RETURNS TEXT AS $func$
845 SELECT * FROM vandelay.marc21_extract_fixed_field( (SELECT marc FROM biblio.record_entry WHERE id = $1), $2 );
848 -- CREATE TYPE biblio.record_ff_map AS (record BIGINT, ff_name TEXT, ff_value TEXT);
849 CREATE OR REPLACE FUNCTION vandelay.marc21_extract_all_fixed_fields( marc TEXT ) RETURNS SETOF biblio.record_ff_map AS $func$
854 output biblio.record_ff_map%ROWTYPE;
856 rtype := (vandelay.marc21_record_type( marc )).code;
858 FOR ff_pos IN SELECT * FROM config.marc21_ff_pos_map WHERE rec_type = rtype ORDER BY tag DESC LOOP
859 output.ff_name := ff_pos.fixed_field;
860 output.ff_value := NULL;
862 IF ff_pos.tag = 'ldr' THEN
863 output.ff_value := oils_xpath_string('//*[local-name()="leader"]', marc);
864 IF output.ff_value IS NOT NULL THEN
865 output.ff_value := SUBSTRING( output.ff_value, ff_pos.start_pos + 1, ff_pos.length );
867 output.ff_value := NULL;
870 FOR tag_data IN SELECT value FROM UNNEST( oils_xpath( '//*[@tag="' || UPPER(ff_pos.tag) || '"]/text()', marc ) ) x(value) LOOP
871 output.ff_value := SUBSTRING( tag_data, ff_pos.start_pos + 1, ff_pos.length );
872 IF output.ff_value IS NULL THEN output.ff_value := REPEAT( ff_pos.default_val, ff_pos.length ); END IF;
874 output.ff_value := NULL;
882 $func$ LANGUAGE PLPGSQL;
884 CREATE OR REPLACE FUNCTION biblio.marc21_extract_all_fixed_fields( rid BIGINT ) RETURNS SETOF biblio.record_ff_map AS $func$
885 SELECT $1 AS record, ff_name, ff_value FROM vandelay.marc21_extract_all_fixed_fields( (SELECT marc FROM biblio.record_entry WHERE id = $1) );
888 CREATE OR REPLACE FUNCTION biblio.marc21_physical_characteristics( rid BIGINT ) RETURNS SETOF biblio.marc21_physical_characteristics AS $func$
889 SELECT id, $1 AS record, ptype, subfield, value FROM vandelay.marc21_physical_characteristics( (SELECT marc FROM biblio.record_entry WHERE id = $1) );
892 CREATE OR REPLACE FUNCTION biblio.extract_quality ( marc TEXT, best_lang TEXT, best_type TEXT ) RETURNS INT AS $func$
905 IF marc IS NULL OR marc = '' THEN
909 -- First, the count of tags
910 qual := ARRAY_UPPER(oils_xpath('*[local-name()="datafield"]', marc), 1);
912 -- now go through a bunch of pain to get the record type
913 IF best_type IS NOT NULL THEN
914 ldr := (oils_xpath('//*[local-name()="leader"]/text()', marc))[1];
916 IF ldr IS NOT NULL THEN
917 SELECT * INTO tval_rec FROM config.marc21_ff_pos_map WHERE fixed_field = 'Type' LIMIT 1; -- They're all the same
918 SELECT * INTO bval_rec FROM config.marc21_ff_pos_map WHERE fixed_field = 'BLvl' LIMIT 1; -- They're all the same
921 tval := SUBSTRING( ldr, tval_rec.start_pos + 1, tval_rec.length );
922 bval := SUBSTRING( ldr, bval_rec.start_pos + 1, bval_rec.length );
924 -- RAISE NOTICE 'type %, blvl %, ldr %', tval, bval, ldr;
926 SELECT * INTO type_map FROM config.marc21_rec_type_map WHERE type_val LIKE '%' || tval || '%' AND blvl_val LIKE '%' || bval || '%';
928 IF type_map.code IS NOT NULL THEN
929 IF best_type = type_map.code THEN
930 qual := qual + qual / 2;
933 FOR ff_pos IN SELECT * FROM config.marc21_ff_pos_map WHERE fixed_field = 'Lang' AND rec_type = type_map.code ORDER BY tag DESC LOOP
934 ff_tag_data := SUBSTRING((oils_xpath('//*[@tag="' || ff_pos.tag || '"]/text()',marc))[1], ff_pos.start_pos + 1, ff_pos.length);
935 IF ff_tag_data = best_lang THEN
943 -- Now look for some quality metrics
945 IF ARRAY_UPPER(oils_xpath('//*[@tag="040"]/*[@code="a" and contains(.,"DLC")]', marc), 1) = 1 THEN
950 IF (oils_xpath('//*[@tag="003"]/text()', marc))[1] ~* E'oclo?c' THEN
957 $func$ LANGUAGE PLPGSQL;
959 CREATE OR REPLACE FUNCTION biblio.extract_fingerprint ( marc text ) RETURNS TEXT AS $func$
961 idx config.biblio_fingerprint%ROWTYPE;
962 xfrm config.xml_transform%ROWTYPE;
964 transformed_xml TEXT;
966 xml_node_list TEXT[];
968 output_text TEXT := '';
971 IF marc IS NULL OR marc = '' THEN
975 -- Loop over the indexing entries
976 FOR idx IN SELECT * FROM config.biblio_fingerprint ORDER BY format, id LOOP
978 SELECT INTO xfrm * from config.xml_transform WHERE name = idx.format;
980 -- See if we can skip the XSLT ... it's expensive
981 IF prev_xfrm IS NULL OR prev_xfrm <> xfrm.name THEN
982 -- Can't skip the transform
983 IF xfrm.xslt <> '---' THEN
984 transformed_xml := oils_xslt_process(marc,xfrm.xslt);
986 transformed_xml := marc;
989 prev_xfrm := xfrm.name;
992 raw_text := COALESCE(
1000 ARRAY[ARRAY[xfrm.prefix, xfrm.namespace_uri]]
1009 raw_text := REGEXP_REPLACE(raw_text, E'\\[.+?\\]', E'');
1010 raw_text := REGEXP_REPLACE(raw_text, E'\\mthe\\M|\\man?d?d\\M', E'', 'g'); -- arg! the pain!
1012 IF idx.first_word IS TRUE THEN
1013 raw_text := REGEXP_REPLACE(raw_text, E'^(\\w+).*?$', E'\\1');
1016 output_text := output_text || REGEXP_REPLACE(raw_text, E'\\s+', '', 'g');
1023 $func$ LANGUAGE PLPGSQL;
1025 -- BEFORE UPDATE OR INSERT trigger for biblio.record_entry
1026 CREATE OR REPLACE FUNCTION biblio.fingerprint_trigger () RETURNS TRIGGER AS $func$
1029 -- For TG_ARGV, first param is language (like 'eng'), second is record type (like 'BKS')
1031 IF NEW.deleted IS TRUE THEN -- we don't much care, then, do we?
1035 NEW.fingerprint := biblio.extract_fingerprint(NEW.marc);
1036 NEW.quality := biblio.extract_quality(NEW.marc, TG_ARGV[0], TG_ARGV[1]);
1041 $func$ LANGUAGE PLPGSQL;
1043 CREATE OR REPLACE FUNCTION metabib.reingest_metabib_full_rec( bib_id BIGINT ) RETURNS VOID AS $func$
1045 PERFORM * FROM config.internal_flag WHERE name = 'ingest.assume_inserts_only' AND enabled;
1047 DELETE FROM metabib.real_full_rec WHERE record = bib_id;
1049 INSERT INTO metabib.real_full_rec (record, tag, ind1, ind2, subfield, value)
1050 SELECT record, tag, ind1, ind2, subfield, value FROM biblio.flatten_marc( bib_id );
1054 $func$ LANGUAGE PLPGSQL;
1056 CREATE OR REPLACE FUNCTION biblio.extract_located_uris( bib_id BIGINT, marcxml TEXT, editor_id INT ) RETURNS VOID AS $func$
1063 uri_owner_list TEXT[];
1071 -- Clear any URI mappings and call numbers for this bib.
1072 -- This leads to acn / auricnm inflation, but also enables
1073 -- old acn/auricnm's to go away and for bibs to be deleted.
1074 FOR uri_cn_id IN SELECT id FROM asset.call_number WHERE record = bib_id AND label = '##URI##' AND NOT deleted LOOP
1075 DELETE FROM asset.uri_call_number_map WHERE call_number = uri_cn_id;
1076 DELETE FROM asset.call_number WHERE id = uri_cn_id;
1079 uris := oils_xpath('//*[@tag="856" and (@ind1="4" or @ind1="1") and (@ind2="0" or @ind2="1")]',marcxml);
1080 IF ARRAY_UPPER(uris,1) > 0 THEN
1081 FOR i IN 1 .. ARRAY_UPPER(uris, 1) LOOP
1082 -- First we pull info out of the 856
1085 uri_href := (oils_xpath('//*[@code="u"]/text()',uri_xml))[1];
1086 uri_label := (oils_xpath('//*[@code="y"]/text()|//*[@code="3"]/text()',uri_xml))[1];
1087 uri_use := (oils_xpath('//*[@code="z"]/text()|//*[@code="2"]/text()|//*[@code="n"]/text()',uri_xml))[1];
1089 IF uri_label IS NULL THEN
1090 uri_label := uri_href;
1092 CONTINUE WHEN uri_href IS NULL;
1094 -- Get the distinct list of libraries wanting to use
1096 DISTINCT REGEXP_REPLACE(
1098 $re$^.*?\((\w+)\).*$$re$,
1101 ) INTO uri_owner_list
1104 '//*[@code="9"]/text()|//*[@code="w"]/text()|//*[@code="n"]/text()',
1109 IF ARRAY_UPPER(uri_owner_list,1) > 0 THEN
1111 -- look for a matching uri
1112 IF uri_use IS NULL THEN
1113 SELECT id INTO uri_id
1115 WHERE label = uri_label AND href = uri_href AND use_restriction IS NULL AND active
1116 ORDER BY id LIMIT 1;
1117 IF NOT FOUND THEN -- create one
1118 INSERT INTO asset.uri (label, href, use_restriction) VALUES (uri_label, uri_href, uri_use);
1119 SELECT id INTO uri_id
1121 WHERE label = uri_label AND href = uri_href AND use_restriction IS NULL AND active;
1124 SELECT id INTO uri_id
1126 WHERE label = uri_label AND href = uri_href AND use_restriction = uri_use AND active
1127 ORDER BY id LIMIT 1;
1128 IF NOT FOUND THEN -- create one
1129 INSERT INTO asset.uri (label, href, use_restriction) VALUES (uri_label, uri_href, uri_use);
1130 SELECT id INTO uri_id
1132 WHERE label = uri_label AND href = uri_href AND use_restriction = uri_use AND active;
1136 FOR j IN 1 .. ARRAY_UPPER(uri_owner_list, 1) LOOP
1137 uri_owner := uri_owner_list[j];
1139 SELECT id INTO uri_owner_id FROM actor.org_unit WHERE shortname = uri_owner;
1140 CONTINUE WHEN NOT FOUND;
1142 -- we need a call number to link through
1143 SELECT id INTO uri_cn_id FROM asset.call_number WHERE owning_lib = uri_owner_id AND record = bib_id AND label = '##URI##' AND NOT deleted;
1145 INSERT INTO asset.call_number (owning_lib, record, create_date, edit_date, creator, editor, label)
1146 VALUES (uri_owner_id, bib_id, 'now', 'now', editor_id, editor_id, '##URI##');
1147 SELECT id INTO uri_cn_id FROM asset.call_number WHERE owning_lib = uri_owner_id AND record = bib_id AND label = '##URI##' AND NOT deleted;
1150 -- now, link them if they're not already
1151 SELECT id INTO uri_map_id FROM asset.uri_call_number_map WHERE call_number = uri_cn_id AND uri = uri_id;
1153 INSERT INTO asset.uri_call_number_map (call_number, uri) VALUES (uri_cn_id, uri_id);
1165 $func$ LANGUAGE PLPGSQL;
1167 CREATE OR REPLACE FUNCTION metabib.remap_metarecord_for_bib( bib_id BIGINT, fp TEXT ) RETURNS BIGINT AS $func$
1171 tmp_mr metabib.metarecord%ROWTYPE;
1172 deleted_mrs BIGINT[];
1175 DELETE FROM metabib.metarecord_source_map WHERE source = bib_id; -- Rid ourselves of the search-estimate-killing linkage
1177 FOR tmp_mr IN SELECT m.* FROM metabib.metarecord m JOIN metabib.metarecord_source_map s ON (s.metarecord = m.id) WHERE s.source = bib_id LOOP
1179 IF old_mr IS NULL AND fp = tmp_mr.fingerprint THEN -- Find the first fingerprint-matching
1180 old_mr := tmp_mr.id;
1182 SELECT COUNT(*) INTO source_count FROM metabib.metarecord_source_map WHERE metarecord = tmp_mr.id;
1183 IF source_count = 0 THEN -- No other records
1184 deleted_mrs := ARRAY_APPEND(deleted_mrs, tmp_mr.id);
1185 DELETE FROM metabib.metarecord WHERE id = tmp_mr.id;
1191 IF old_mr IS NULL THEN -- we found no suitable, preexisting MR based on old source maps
1192 SELECT id INTO old_mr FROM metabib.metarecord WHERE fingerprint = fp; -- is there one for our current fingerprint?
1193 IF old_mr IS NULL THEN -- nope, create one and grab its id
1194 INSERT INTO metabib.metarecord ( fingerprint, master_record ) VALUES ( fp, bib_id );
1195 SELECT id INTO old_mr FROM metabib.metarecord WHERE fingerprint = fp;
1196 ELSE -- indeed there is. update it with a null cache and recalcualated master record
1197 UPDATE metabib.metarecord
1199 master_record = ( SELECT id FROM biblio.record_entry WHERE fingerprint = fp ORDER BY quality DESC LIMIT 1)
1202 ELSE -- there was one we already attached to, update its mods cache and master_record
1203 UPDATE metabib.metarecord
1205 master_record = ( SELECT id FROM biblio.record_entry WHERE fingerprint = fp ORDER BY quality DESC LIMIT 1)
1209 INSERT INTO metabib.metarecord_source_map (metarecord, source) VALUES (old_mr, bib_id); -- new source mapping
1211 IF ARRAY_UPPER(deleted_mrs,1) > 0 THEN
1212 UPDATE action.hold_request SET target = old_mr WHERE target IN ( SELECT unnest(deleted_mrs) ) AND hold_type = 'M'; -- if we had to delete any MRs above, make sure their holds are moved
1218 $func$ LANGUAGE PLPGSQL;
1220 CREATE OR REPLACE FUNCTION biblio.map_authority_linking (bibid BIGINT, marc TEXT) RETURNS BIGINT AS $func$
1221 DELETE FROM authority.bib_linking WHERE bib = $1;
1222 INSERT INTO authority.bib_linking (bib, authority)
1225 FROM ( SELECT DISTINCT $1 AS bib,
1226 BTRIM(remove_paren_substring(txt))::BIGINT AS authority
1227 FROM unnest(oils_xpath('//*[@code="0"]/text()',$2)) x(txt)
1228 WHERE BTRIM(remove_paren_substring(txt)) ~ $re$^\d+$$re$
1229 ) y JOIN authority.record_entry r ON r.id = y.authority;
1231 $func$ LANGUAGE SQL;
1233 -- AFTER UPDATE OR INSERT trigger for biblio.record_entry
1234 CREATE OR REPLACE FUNCTION biblio.indexing_ingest_or_delete () RETURNS TRIGGER AS $func$
1236 transformed_xml TEXT;
1239 xfrm config.xml_transform%ROWTYPE;
1241 new_attrs HSTORE := ''::HSTORE;
1242 attr_def config.record_attr_definition%ROWTYPE;
1245 IF NEW.deleted IS TRUE THEN -- If this bib is deleted
1246 PERFORM * FROM config.internal_flag WHERE
1247 name = 'ingest.metarecord_mapping.preserve_on_delete' AND enabled;
1249 -- One needs to keep these around to support searches
1250 -- with the #deleted modifier, so one should turn on the named
1251 -- internal flag for that functionality.
1252 DELETE FROM metabib.metarecord_source_map WHERE source = NEW.id;
1253 DELETE FROM metabib.record_attr WHERE id = NEW.id;
1256 DELETE FROM authority.bib_linking WHERE bib = NEW.id; -- Avoid updating fields in bibs that are no longer visible
1257 DELETE FROM biblio.peer_bib_copy_map WHERE peer_record = NEW.id; -- Separate any multi-homed items
1258 DELETE FROM metabib.browse_entry_def_map WHERE source = NEW.id; -- Don't auto-suggest deleted bibs
1259 RETURN NEW; -- and we're done
1262 IF TG_OP = 'UPDATE' THEN -- re-ingest?
1263 PERFORM * FROM config.internal_flag WHERE name = 'ingest.reingest.force_on_same_marc' AND enabled;
1265 IF NOT FOUND AND OLD.marc = NEW.marc THEN -- don't do anything if the MARC didn't change
1270 -- Record authority linking
1271 PERFORM * FROM config.internal_flag WHERE name = 'ingest.disable_authority_linking' AND enabled;
1273 PERFORM biblio.map_authority_linking( NEW.id, NEW.marc );
1276 -- Flatten and insert the mfr data
1277 PERFORM * FROM config.internal_flag WHERE name = 'ingest.disable_metabib_full_rec' AND enabled;
1279 PERFORM metabib.reingest_metabib_full_rec(NEW.id);
1281 -- Now we pull out attribute data, which is dependent on the mfr for all but XPath-based fields
1282 PERFORM * FROM config.internal_flag WHERE name = 'ingest.disable_metabib_rec_descriptor' AND enabled;
1284 FOR attr_def IN SELECT * FROM config.record_attr_definition ORDER BY format LOOP
1286 IF attr_def.tag IS NOT NULL THEN -- tag (and optional subfield list) selection
1287 SELECT ARRAY_TO_STRING(ARRAY_ACCUM(value), COALESCE(attr_def.joiner,' ')) INTO attr_value
1288 FROM (SELECT * FROM metabib.full_rec ORDER BY tag, subfield) AS x
1289 WHERE record = NEW.id
1290 AND tag LIKE attr_def.tag
1292 WHEN attr_def.sf_list IS NOT NULL
1293 THEN POSITION(subfield IN attr_def.sf_list) > 0
1300 ELSIF attr_def.fixed_field IS NOT NULL THEN -- a named fixed field, see config.marc21_ff_pos_map.fixed_field
1301 attr_value := biblio.marc21_extract_fixed_field(NEW.id, attr_def.fixed_field);
1303 ELSIF attr_def.xpath IS NOT NULL THEN -- and xpath expression
1305 SELECT INTO xfrm * FROM config.xml_transform WHERE name = attr_def.format;
1307 -- See if we can skip the XSLT ... it's expensive
1308 IF prev_xfrm IS NULL OR prev_xfrm <> xfrm.name THEN
1309 -- Can't skip the transform
1310 IF xfrm.xslt <> '---' THEN
1311 transformed_xml := oils_xslt_process(NEW.marc,xfrm.xslt);
1313 transformed_xml := NEW.marc;
1316 prev_xfrm := xfrm.name;
1319 IF xfrm.name IS NULL THEN
1320 -- just grab the marcxml (empty) transform
1321 SELECT INTO xfrm * FROM config.xml_transform WHERE xslt = '---' LIMIT 1;
1322 prev_xfrm := xfrm.name;
1325 attr_value := oils_xpath_string(attr_def.xpath, transformed_xml, COALESCE(attr_def.joiner,' '), ARRAY[ARRAY[xfrm.prefix, xfrm.namespace_uri]]);
1327 ELSIF attr_def.phys_char_sf IS NOT NULL THEN -- a named Physical Characteristic, see config.marc21_physical_characteristic_*_map
1328 SELECT m.value INTO attr_value
1329 FROM biblio.marc21_physical_characteristics(NEW.id) v
1330 JOIN config.marc21_physical_characteristic_value_map m ON (m.id = v.value)
1331 WHERE v.subfield = attr_def.phys_char_sf
1332 LIMIT 1; -- Just in case ...
1336 -- apply index normalizers to attr_value
1338 SELECT n.func AS func,
1339 n.param_count AS param_count,
1341 FROM config.index_normalizer n
1342 JOIN config.record_attr_index_norm_map m ON (m.norm = n.id)
1343 WHERE attr = attr_def.name
1345 EXECUTE 'SELECT ' || normalizer.func || '(' ||
1346 COALESCE( quote_literal( attr_value ), 'NULL' ) ||
1348 WHEN normalizer.param_count > 0
1349 THEN ',' || REPLACE(REPLACE(BTRIM(normalizer.params,'[]'),E'\'',E'\\\''),E'"',E'\'')
1352 ')' INTO attr_value;
1356 -- Add the new value to the hstore
1357 new_attrs := new_attrs || hstore( attr_def.name, attr_value );
1361 IF TG_OP = 'INSERT' OR OLD.deleted THEN -- initial insert OR revivication
1362 DELETE FROM metabib.record_attr WHERE id = NEW.id;
1363 INSERT INTO metabib.record_attr (id, attrs) VALUES (NEW.id, new_attrs);
1365 UPDATE metabib.record_attr SET attrs = new_attrs WHERE id = NEW.id;
1371 -- Gather and insert the field entry data
1372 PERFORM metabib.reingest_metabib_field_entries(NEW.id);
1374 -- Located URI magic
1375 IF TG_OP = 'INSERT' THEN
1376 PERFORM * FROM config.internal_flag WHERE name = 'ingest.disable_located_uri' AND enabled;
1378 PERFORM biblio.extract_located_uris( NEW.id, NEW.marc, NEW.editor );
1381 PERFORM * FROM config.internal_flag WHERE name = 'ingest.disable_located_uri' AND enabled;
1383 PERFORM biblio.extract_located_uris( NEW.id, NEW.marc, NEW.editor );
1387 -- (re)map metarecord-bib linking
1388 IF TG_OP = 'INSERT' THEN -- if not deleted and performing an insert, check for the flag
1389 PERFORM * FROM config.internal_flag WHERE name = 'ingest.metarecord_mapping.skip_on_insert' AND enabled;
1391 PERFORM metabib.remap_metarecord_for_bib( NEW.id, NEW.fingerprint );
1393 ELSE -- we're doing an update, and we're not deleted, remap
1394 PERFORM * FROM config.internal_flag WHERE name = 'ingest.metarecord_mapping.skip_on_update' AND enabled;
1396 PERFORM metabib.remap_metarecord_for_bib( NEW.id, NEW.fingerprint );
1402 $func$ LANGUAGE PLPGSQL;
1404 CREATE OR REPLACE FUNCTION metabib.browse_normalize(facet_text TEXT, mapped_field INT) RETURNS TEXT AS $$
1410 SELECT n.func AS func,
1411 n.param_count AS param_count,
1413 FROM config.index_normalizer n
1414 JOIN config.metabib_field_index_norm_map m ON (m.norm = n.id)
1415 WHERE m.field = mapped_field AND m.pos < 0
1418 EXECUTE 'SELECT ' || normalizer.func || '(' ||
1419 quote_literal( facet_text ) ||
1421 WHEN normalizer.param_count > 0
1422 THEN ',' || REPLACE(REPLACE(BTRIM(normalizer.params,'[]'),E'\'',E'\\\''),E'"',E'\'')
1425 ')' INTO facet_text;
1432 $$ LANGUAGE PLPGSQL;
1435 -- This mimics a specific part of QueryParser, turning the first part of a
1436 -- classed search (search_class) into a set of classes and possibly fields.
1437 -- search_class might look like "author" or "title|proper" or "ti|uniform"
1438 -- or "au" or "au|corporate|personal" or anything like that, where the first
1439 -- element of the list you get by separating on the "|" character is either
1440 -- a registered class (config.metabib_class) or an alias
1441 -- (config.metabib_search_alias), and the rest of any such elements are
1442 -- fields (config.metabib_field).
1444 FUNCTION metabib.search_class_to_registered_components(search_class TEXT)
1445 RETURNS SETOF RECORD AS $func$
1447 search_parts TEXT[];
1449 search_part_count INTEGER;
1451 registered_class config.metabib_class%ROWTYPE;
1452 registered_alias config.metabib_search_alias%ROWTYPE;
1453 registered_field config.metabib_field%ROWTYPE;
1455 search_parts := REGEXP_SPLIT_TO_ARRAY(search_class, E'\\|');
1457 search_part_count := ARRAY_LENGTH(search_parts, 1);
1458 IF search_part_count = 0 THEN
1461 SELECT INTO registered_class
1462 * FROM config.metabib_class WHERE name = search_parts[1];
1464 IF search_part_count < 2 THEN -- all fields
1465 rec := (registered_class.name, NULL::INTEGER);
1469 FOR field_name IN SELECT *
1470 FROM UNNEST(search_parts[2:search_part_count]) LOOP
1471 SELECT INTO registered_field
1472 * FROM config.metabib_field
1473 WHERE name = field_name AND
1474 field_class = registered_class.name;
1476 rec := (registered_class.name, registered_field.id);
1481 -- maybe we have an alias?
1482 SELECT INTO registered_alias
1483 * FROM config.metabib_search_alias WHERE alias=search_parts[1];
1487 IF search_part_count < 2 THEN -- return w/e the alias says
1489 registered_alias.field_class, registered_alias.field
1494 FOR field_name IN SELECT *
1495 FROM UNNEST(search_parts[2:search_part_count]) LOOP
1496 SELECT INTO registered_field
1497 * FROM config.metabib_field
1498 WHERE name = field_name AND
1499 field_class = registered_alias.field_class;
1502 registered_alias.field_class,
1513 $func$ LANGUAGE PLPGSQL ROWS 1;
1516 -- Given a string such as a user might type into a search box, prepare
1517 -- two changed variants for TO_TSQUERY(). See
1518 -- http://www.postgresql.org/docs/9.0/static/textsearch-controls.html
1519 -- The first variant is normalized to match indexed documents regardless
1520 -- of diacritics. The second variant keeps its diacritics for proper
1521 -- highlighting via TS_HEADLINE().
1523 FUNCTION metabib.autosuggest_prepare_tsquery(orig TEXT) RETURNS TEXT[] AS
1526 orig_ended_in_space BOOLEAN;
1531 orig_ended_in_space := orig ~ E'\\s$';
1533 orig := ARRAY_TO_STRING(
1534 evergreen.regexp_split_to_array(orig, E'\\W+'), ' '
1537 normalized := public.search_normalize(orig); -- also trim()s
1538 plain := trim(orig);
1540 IF NOT orig_ended_in_space THEN
1541 plain := plain || ':*';
1542 normalized := normalized || ':*';
1545 plain := ARRAY_TO_STRING(
1546 evergreen.regexp_split_to_array(plain, E'\\s+'), ' & '
1548 normalized := ARRAY_TO_STRING(
1549 evergreen.regexp_split_to_array(normalized, E'\\s+'), ' & '
1552 RETURN ARRAY[normalized, plain];
1554 $$ LANGUAGE PLPGSQL;
1558 FUNCTION metabib.suggest_browse_entries(
1559 raw_query_text TEXT, -- actually typed by humans at the UI level
1560 search_class TEXT, -- 'alias' or 'class' or 'class|field..', etc
1561 headline_opts TEXT, -- markup options for ts_headline()
1562 visibility_org INTEGER,-- null if you don't want opac visibility test
1563 query_limit INTEGER,-- use in LIMIT clause of interal query
1564 normalization INTEGER -- argument to TS_RANK_CD()
1566 value TEXT, -- plain
1568 buoyant_and_class_match BOOL,
1570 field_weight INTEGER,
1573 match TEXT -- marked up
1576 prepared_query_texts TEXT[];
1578 plain_query TSQUERY;
1579 opac_visibility_join TEXT;
1580 search_class_join TEXT;
1583 prepared_query_texts := metabib.autosuggest_prepare_tsquery(raw_query_text);
1585 query := TO_TSQUERY('keyword', prepared_query_texts[1]);
1586 plain_query := TO_TSQUERY('keyword', prepared_query_texts[2]);
1588 visibility_org := NULLIF(visibility_org,-1);
1589 IF visibility_org IS NOT NULL THEN
1590 opac_visibility_join := '
1591 JOIN asset.opac_visible_copies aovc ON (
1592 aovc.record = x.source AND
1593 aovc.circ_lib IN (SELECT id FROM actor.org_unit_descendants($4))
1596 opac_visibility_join := '';
1599 -- The following determines whether we only provide suggestsons matching
1600 -- the user's selected search_class, or whether we show other suggestions
1601 -- too. The reason for MIN() is that for search_classes like
1602 -- 'title|proper|uniform' you would otherwise get multiple rows. The
1603 -- implication is that if title as a class doesn't have restrict,
1604 -- nor does the proper field, but the uniform field does, you're going
1605 -- to get 'false' for your overall evaluation of 'should we restrict?'
1606 -- To invert that, change from MIN() to MAX().
1610 MIN(cmc.restrict::INT) AS restrict_class,
1611 MIN(cmf.restrict::INT) AS restrict_field
1612 FROM metabib.search_class_to_registered_components(search_class)
1613 AS _registered (field_class TEXT, field INT)
1615 config.metabib_class cmc ON (cmc.name = _registered.field_class)
1617 config.metabib_field cmf ON (cmf.id = _registered.field);
1619 -- evaluate 'should we restrict?'
1620 IF r_fields.restrict_field::BOOL OR r_fields.restrict_class::BOOL THEN
1621 search_class_join := '
1623 metabib.search_class_to_registered_components($2)
1624 AS _registered (field_class TEXT, field INT) ON (
1625 (_registered.field IS NULL AND
1626 _registered.field_class = cmf.field_class) OR
1627 (_registered.field = cmf.id)
1631 search_class_join := '
1633 metabib.search_class_to_registered_components($2)
1634 AS _registered (field_class TEXT, field INT) ON (
1635 _registered.field_class = cmc.name
1640 RETURN QUERY EXECUTE '
1649 TS_HEADLINE(value, $7, $3)
1650 FROM (SELECT DISTINCT
1653 cmc.buoyant AND _registered.field_class IS NOT NULL AS push,
1654 _registered.field = cmf.id AS restrict,
1656 TS_RANK_CD(mbe.index_vector, $1, $6),
1659 FROM metabib.browse_entry_def_map mbedm
1660 JOIN (SELECT * FROM metabib.browse_entry WHERE index_vector @@ $1 LIMIT 10000) mbe ON (mbe.id = mbedm.entry)
1661 JOIN config.metabib_field cmf ON (cmf.id = mbedm.def)
1662 JOIN config.metabib_class cmc ON (cmf.field_class = cmc.name)
1663 ' || search_class_join || '
1664 ORDER BY 3 DESC, 4 DESC NULLS LAST, 5 DESC, 6 DESC, 7 DESC, 1 ASC
1666 ' || opac_visibility_join || '
1667 ORDER BY 3 DESC, 4 DESC NULLS LAST, 5 DESC, 6 DESC, 7 DESC, 1 ASC
1669 ' -- sic, repeat the order by clause in the outer select too
1671 query, search_class, headline_opts,
1672 visibility_org, query_limit, normalization, plain_query
1676 -- buoyant AND chosen class = match class
1677 -- chosen field = match field
1684 $func$ LANGUAGE PLPGSQL;
1686 CREATE OR REPLACE FUNCTION public.oils_tsearch2 () RETURNS TRIGGER AS $$
1690 temp_vector TEXT := '';
1696 NEW.index_vector = ''::tsvector;
1698 IF TG_TABLE_NAME::TEXT ~ 'field_entry$' THEN
1700 SELECT n.func AS func,
1701 n.param_count AS param_count,
1703 FROM config.index_normalizer n
1704 JOIN config.metabib_field_index_norm_map m ON (m.norm = n.id)
1705 WHERE field = NEW.field AND m.pos < 0
1707 EXECUTE 'SELECT ' || normalizer.func || '(' ||
1708 quote_literal( value ) ||
1710 WHEN normalizer.param_count > 0
1711 THEN ',' || REPLACE(REPLACE(BTRIM(normalizer.params,'[]'),E'\'',E'\\\''),E'"',E'\'')
1721 SELECT n.func AS func,
1722 n.param_count AS param_count,
1724 FROM config.index_normalizer n
1725 JOIN config.metabib_field_index_norm_map m ON (m.norm = n.id)
1726 WHERE field = NEW.field AND m.pos >= 0
1728 EXECUTE 'SELECT ' || normalizer.func || '(' ||
1729 quote_literal( value ) ||
1731 WHEN normalizer.param_count > 0
1732 THEN ',' || REPLACE(REPLACE(BTRIM(normalizer.params,'[]'),E'\'',E'\\\''),E'"',E'\'')
1740 IF TG_TABLE_NAME::TEXT ~ 'browse_entry$' THEN
1741 value := ARRAY_TO_STRING(
1742 evergreen.regexp_split_to_array(value, E'\\W+'), ' '
1744 value := public.search_normalize(value);
1745 NEW.index_vector = to_tsvector(TG_ARGV[0]::regconfig, value);
1746 ELSIF TG_TABLE_NAME::TEXT ~ 'field_entry$' THEN
1748 SELECT ts_config, index_weight
1749 FROM config.metabib_class_ts_map
1750 WHERE field_class = TG_ARGV[0]
1751 AND index_lang IS NULL OR EXISTS (SELECT 1 FROM metabib.record_attr WHERE id = NEW.source AND index_lang IN(attrs->'item_lang',attrs->'language'))
1752 AND always OR NOT EXISTS (SELECT 1 FROM config.metabib_field_ts_map WHERE metabib_field = NEW.field)
1754 SELECT ts_config, index_weight
1755 FROM config.metabib_field_ts_map
1756 WHERE metabib_field = NEW.field
1757 AND index_lang IS NULL OR EXISTS (SELECT 1 FROM metabib.record_attr WHERE id = NEW.source AND index_lang IN(attrs->'item_lang',attrs->'language'))
1758 ORDER BY index_weight ASC
1760 IF cur_weight IS NOT NULL AND cur_weight != ts_rec.index_weight THEN
1761 NEW.index_vector = NEW.index_vector || setweight(temp_vector::tsvector,cur_weight);
1764 cur_weight = ts_rec.index_weight;
1765 SELECT INTO temp_vector temp_vector || ' ' || to_tsvector(ts_rec.ts_config::regconfig, value)::TEXT;
1767 NEW.index_vector = NEW.index_vector || setweight(temp_vector::tsvector,cur_weight);
1769 NEW.index_vector = to_tsvector(TG_ARGV[0]::regconfig, value);
1774 $$ LANGUAGE PLPGSQL;
1777 CREATE TYPE metabib.flat_browse_entry_appearance AS (
1778 browse_entry BIGINT,
1782 sources INT, -- visible ones, that is
1783 row_number INT, -- internal use, sort of
1784 accurate BOOL, -- Count in sources field is accurate? Not
1785 -- if we had more than a browse superpage
1786 -- of records to look at.
1791 CREATE OR REPLACE FUNCTION metabib.browse_pivot(
1794 ) RETURNS BIGINT AS $p$
1798 SELECT INTO id mbe.id FROM metabib.browse_entry mbe
1799 JOIN metabib.browse_entry_def_map mbedm ON (
1800 mbedm.entry = mbe.id AND
1801 mbedm.def = ANY(search_field)
1803 WHERE mbe.sort_value >= public.search_normalize(browse_term)
1804 ORDER BY mbe.sort_value, mbe.value LIMIT 1;
1808 $p$ LANGUAGE PLPGSQL;
1810 CREATE OR REPLACE FUNCTION metabib.staged_browse(
1814 context_locations INT[],
1816 browse_superpage_size INT,
1817 count_up_from_zero BOOL, -- if false, count down from -1
1820 ) RETURNS SETOF metabib.flat_browse_entry_appearance AS $p$
1825 result_row metabib.flat_browse_entry_appearance%ROWTYPE;
1826 results_skipped INT := 0;
1827 row_counter INT := 0;
1832 all_records BIGINT[];
1833 superpage_of_records BIGINT[];
1836 IF count_up_from_zero THEN
1842 OPEN curs FOR EXECUTE query;
1845 FETCH curs INTO rec;
1847 IF result_row.pivot_point IS NOT NULL THEN
1848 RETURN NEXT result_row;
1853 -- Gather aggregate data based on the MBE row we're looking at now
1854 SELECT INTO all_records, result_row.authorities, result_row.fields
1855 ARRAY_AGG(DISTINCT source),
1856 ARRAY_TO_STRING(ARRAY_AGG(DISTINCT authority), $$,$$),
1857 ARRAY_TO_STRING(ARRAY_AGG(DISTINCT def), $$,$$)
1858 FROM metabib.browse_entry_def_map
1859 WHERE entry = rec.id
1860 AND def = ANY(fields);
1862 result_row.sources := 0;
1864 full_end := ARRAY_LENGTH(all_records, 1);
1865 superpage_size := COALESCE(browse_superpage_size, full_end);
1867 slice_end := superpage_size;
1869 WHILE result_row.sources = 0 AND slice_start <= full_end LOOP
1870 superpage_of_records := all_records[slice_start:slice_end];
1872 'SELECT NULL::BIGINT AS id, ARRAY[r] AS records, ' ||
1873 '1::INT AS rel FROM (SELECT UNNEST(' ||
1874 quote_literal(superpage_of_records) || '::BIGINT[]) AS r) rr';
1876 -- We use search.query_parser_fts() for visibility testing.
1877 -- We're calling it once per browse-superpage worth of records
1878 -- out of the set of records related to a given mbe, until we've
1879 -- either exhausted that set of records or found at least 1
1882 SELECT INTO result_row.sources visible
1883 FROM search.query_parser_fts(
1884 context_org, NULL, qpfts_query, NULL,
1885 context_locations, 0, NULL, NULL, FALSE, staff, FALSE
1887 WHERE qpfts.rel IS NULL;
1889 slice_start := slice_start + superpage_size;
1890 slice_end := slice_end + superpage_size;
1893 -- Accurate? Well, probably.
1894 result_row.accurate := browse_superpage_size IS NULL OR
1895 browse_superpage_size >= full_end;
1897 IF result_row.sources > 0 THEN
1898 -- We've got a browse entry with visible holdings. Yay.
1901 -- The function that calls this function needs row_number in order
1902 -- to correctly order results from two different runs of this
1904 result_row.row_number := row_number;
1906 -- Now, if row_counter is still less than limit, return a row. If
1907 -- not, but it is less than next_pivot_pos, continue on without
1908 -- returning actual result rows until we find
1909 -- that next pivot, and return it.
1911 IF row_counter < result_limit THEN
1912 result_row.browse_entry := rec.id;
1913 result_row.value := rec.value;
1915 RETURN NEXT result_row;
1917 result_row.browse_entry := NULL;
1918 result_row.authorities := NULL;
1919 result_row.fields := NULL;
1920 result_row.value := NULL;
1921 result_row.sources := NULL;
1922 result_row.accurate := NULL;
1923 result_row.pivot_point := rec.id;
1925 IF row_counter >= next_pivot_pos THEN
1926 RETURN NEXT result_row;
1931 IF count_up_from_zero THEN
1932 row_number := row_number + 1;
1934 row_number := row_number - 1;
1937 -- row_counter is different from row_number.
1938 -- It simply counts up from zero so that we know when
1939 -- we've reached our limit.
1940 row_counter := row_counter + 1;
1944 $p$ LANGUAGE PLPGSQL;
1947 CREATE OR REPLACE FUNCTION metabib.browse(
1950 context_org INT DEFAULT NULL,
1951 context_loc_group INT DEFAULT NULL,
1952 staff BOOL DEFAULT FALSE,
1953 pivot_id BIGINT DEFAULT NULL,
1954 result_limit INT DEFAULT 10
1955 ) RETURNS SETOF metabib.flat_browse_entry_appearance AS $p$
1960 pivot_sort_value TEXT;
1961 pivot_sort_fallback TEXT;
1962 context_locations INT[];
1963 browse_superpage_size INT;
1964 results_skipped INT := 0;
1968 forward_to_pivot INT;
1970 -- First, find the pivot if we were given a browse term but not a pivot.
1971 IF pivot_id IS NULL THEN
1972 pivot_id := metabib.browse_pivot(search_field, browse_term);
1975 SELECT INTO pivot_sort_value, pivot_sort_fallback
1976 sort_value, value FROM metabib.browse_entry WHERE id = pivot_id;
1978 -- Bail if we couldn't find a pivot.
1979 IF pivot_sort_value IS NULL THEN
1983 -- Transform the context_loc_group argument (if any) (logc at the
1984 -- TPAC layer) into a form we'll be able to use.
1985 IF context_loc_group IS NOT NULL THEN
1986 SELECT INTO context_locations ARRAY_AGG(location)
1987 FROM asset.copy_location_group_map
1988 WHERE lgroup = context_loc_group;
1991 -- Get the configured size of browse superpages.
1992 SELECT INTO browse_superpage_size value -- NULL ok
1993 FROM config.global_flag
1994 WHERE enabled AND name = 'opac.browse.holdings_visibility_test_limit';
1996 -- First we're going to search backward from the pivot, then we're going
1997 -- to search forward. In each direction, we need two limits. At the
1998 -- lesser of the two limits, we delineate the edge of the result set
1999 -- we're going to return. At the greater of the two limits, we find the
2000 -- pivot value that would represent an offset from the current pivot
2001 -- at a distance of one "page" in either direction, where a "page" is a
2002 -- result set of the size specified in the "result_limit" argument.
2004 -- The two limits in each direction make four derived values in total,
2005 -- and we calculate them now.
2006 back_limit := CEIL(result_limit::FLOAT / 2);
2007 back_to_pivot := result_limit;
2008 forward_limit := result_limit / 2;
2009 forward_to_pivot := result_limit - 1;
2011 -- This is the meat of the SQL query that finds browse entries. We'll
2012 -- pass this to a function which uses it with a cursor, so that individual
2013 -- rows may be fetched in a loop until some condition is satisfied, without
2014 -- waiting for a result set of fixed size to be collected all at once.
2020 FROM metabib.browse_entry mbe
2021 WHERE EXISTS (SELECT 1 FROM metabib.browse_entry_def_map mbedm WHERE
2022 mbedm.entry = mbe.id AND
2023 mbedm.def = ANY(' || quote_literal(search_field) || ')
2026 -- This is the variant of the query for browsing backward.
2027 back_query := core_query ||
2028 ' mbe.sort_value <= ' || quote_literal(pivot_sort_value) ||
2029 ' ORDER BY mbe.sort_value DESC, mbe.value DESC ';
2031 -- This variant browses forward.
2032 forward_query := core_query ||
2033 ' mbe.sort_value > ' || quote_literal(pivot_sort_value) ||
2034 ' ORDER BY mbe.sort_value, mbe.value ';
2036 -- We now call the function which applies a cursor to the provided
2037 -- queries, stopping at the appropriate limits and also giving us
2038 -- the next page's pivot.
2040 SELECT * FROM metabib.staged_browse(
2041 back_query, search_field, context_org, context_locations,
2042 staff, browse_superpage_size, TRUE, back_limit, back_to_pivot
2044 SELECT * FROM metabib.staged_browse(
2045 forward_query, search_field, context_org, context_locations,
2046 staff, browse_superpage_size, FALSE, forward_limit, forward_to_pivot
2047 ) ORDER BY row_number DESC;
2050 $p$ LANGUAGE PLPGSQL;
2052 CREATE OR REPLACE FUNCTION metabib.browse(
2055 context_org INT DEFAULT NULL,
2056 context_loc_group INT DEFAULT NULL,
2057 staff BOOL DEFAULT FALSE,
2058 pivot_id BIGINT DEFAULT NULL,
2059 result_limit INT DEFAULT 10
2060 ) RETURNS SETOF metabib.flat_browse_entry_appearance AS $p$
2062 RETURN QUERY SELECT * FROM metabib.browse(
2063 (SELECT COALESCE(ARRAY_AGG(id), ARRAY[]::INT[])
2064 FROM config.metabib_field WHERE field_class = search_class),
2073 $p$ LANGUAGE PLPGSQL;