3 INSERT INTO config.upgrade_log (version) VALUES ('XXXX'); -- miker
5 CREATE TABLE config.record_attr_definition (
7 label TEXT NOT NULL, -- I18N
8 filter BOOL NOT NULL DEFAULT TRUE, -- becomes QP filter if true
9 sorter BOOL NOT NULL DEFAULT FALSE, -- becomes QP sort() axis if true
11 -- For pre-extracted fields. Takes the first occurance, uses naive subfield ordering
12 tag TEXT, -- LIKE format
13 sf_list TEXT, -- pile-o-values, like 'abcd' for a and b and c and d
15 -- This is used for both tag/sf and xpath entries
18 -- For xpath-extracted attrs
20 format TEXT REFERENCES config.xml_transform (name) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
25 fixed_field TEXT, -- should exist in config.marc21_ff_pos_map.fixed_field
27 -- For phys-char fields
28 phys_char_sf INT REFERENCES config.marc21_physical_characteristic_subfield_map (id)
31 CREATE TABLE config.record_attr_index_norm_map (
32 id SERIAL PRIMARY KEY,
33 attr TEXT NOT NULL REFERENCES config.record_attr_definition (name) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
34 norm INT NOT NULL REFERENCES config.index_normalizer (id) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
36 pos INT NOT NULL DEFAULT 0
39 CREATE TABLE config.coded_value_map (
40 id SERIAL PRIMARY KEY,
41 ctype TEXT NOT NULL REFERENCES config.record_attr_definition (name) ON DELETE CASCADE DEFERRABLE INITIALLY DEFERRED,
48 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('alph','Alph','Alph');
49 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('audience','Audn','Audn');
50 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('bib_level','BLvl','BLvl');
51 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('biog','Biog','Biog');
52 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('conf','Conf','Conf');
53 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('control_type','Ctrl','Ctrl');
54 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('ctry','Ctry','Ctry');
55 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('date1','Date1','Date1');
56 INSERT INTO config.record_attr_definition (name,label,fixed_field,sorter,filter) values ('pubdate','Pub Date','Date1',TRUE,FALSE);
57 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('date2','Date2','Date2');
58 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('cat_form','Desc','Desc');
59 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('pub_status','DtSt','DtSt');
60 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('enc_level','ELvl','ELvl');
61 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('fest','Fest','Fest');
62 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('item_form','Form','Form');
63 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('gpub','GPub','GPub');
64 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('ills','Ills','Ills');
65 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('indx','Indx','Indx');
66 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('item_lang','Lang','Lang');
67 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('lit_form','LitF','LitF');
68 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('mrec','MRec','MRec');
69 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('ff_sl','S/L','S/L');
70 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('type_mat','TMat','TMat');
71 INSERT INTO config.record_attr_definition (name,label,fixed_field) values ('item_type','Type','Type');
72 INSERT INTO config.record_attr_definition (name,label,phys_char_sf) values ('vr_format','Videorecording format',72);
73 INSERT INTO config.record_attr_definition (name,label,sorter,filter,tag) values ('titlesort','Title',TRUE,FALSE,'tnf');
74 INSERT INTO config.record_attr_definition (name,label,sorter,filter,tag) values ('authorsort','Author',TRUE,FALSE,'1%');
76 INSERT INTO config.coded_value_map (ctype,code,value,description)
77 SELECT 'item_lang' AS ctype, code, value, NULL FROM config.language_map
79 SELECT 'bib_level' AS ctype, code, value, NULL FROM config.bib_level_map
81 SELECT 'item_form' AS ctype, code, value, NULL FROM config.item_form_map
83 SELECT 'item_type' AS ctype, code, value, NULL FROM config.item_type_map
85 SELECT 'lit_form' AS ctype, code, value, description FROM config.lit_form_map
87 SELECT 'audience' AS ctype, code, value, description FROM config.audience_map
89 SELECT 'vr_format' AS ctype, code, value, NULL FROM config.videorecording_format_map;
91 ALTER TABLE config.i18n_locale DROP CONSTRAINT i18n_locale_marc_code_fkey;
93 ALTER TABLE config.circ_matrix_matchpoint DROP CONSTRAINT circ_matrix_matchpoint_marc_form_fkey;
94 ALTER TABLE config.circ_matrix_matchpoint DROP CONSTRAINT circ_matrix_matchpoint_marc_type_fkey;
95 ALTER TABLE config.circ_matrix_matchpoint DROP CONSTRAINT circ_matrix_matchpoint_marc_vr_format_fkey;
97 ALTER TABLE config.hold_matrix_matchpoint DROP CONSTRAINT hold_matrix_matchpoint_marc_form_fkey;
98 ALTER TABLE config.hold_matrix_matchpoint DROP CONSTRAINT hold_matrix_matchpoint_marc_type_fkey;
99 ALTER TABLE config.hold_matrix_matchpoint DROP CONSTRAINT hold_matrix_matchpoint_marc_vr_format_fkey;
101 DROP TABLE config.language_map;
102 DROP TABLE config.bib_level_map;
103 DROP TABLE config.item_form_map;
104 DROP TABLE config.item_type_map;
105 DROP TABLE config.lit_form_map;
106 DROP TABLE config.audience_map;
107 DROP TABLE config.videorecording_format_map;
109 UPDATE config.i18n_core SET fq_field = 'ccvm.value', identity_value = ccvm.id FROM config.coded_value_map AS ccvm WHERE fq_field = 'clm.value' AND ccvm.ctype = 'item_lang' AND identity_value = ccvm.code;
110 UPDATE config.i18n_core SET fq_field = 'ccvm.value', identity_value = ccvm.id FROM config.coded_value_map AS ccvm WHERE fq_field = 'cblvl.value' AND ccvm.ctype = 'bib_level' AND identity_value = ccvm.code;
111 UPDATE config.i18n_core SET fq_field = 'ccvm.value', identity_value = ccvm.id FROM config.coded_value_map AS ccvm WHERE fq_field = 'cifm.value' AND ccvm.ctype = 'item_form' AND identity_value = ccvm.code;
112 UPDATE config.i18n_core SET fq_field = 'ccvm.value', identity_value = ccvm.id FROM config.coded_value_map AS ccvm WHERE fq_field = 'citm.value' AND ccvm.ctype = 'item_type' AND identity_value = ccvm.code;
113 UPDATE config.i18n_core SET fq_field = 'ccvm.value', identity_value = ccvm.id FROM config.coded_value_map AS ccvm WHERE fq_field = 'clfm.value' AND ccvm.ctype = 'lit_form' AND identity_value = ccvm.code;
114 UPDATE config.i18n_core SET fq_field = 'ccvm.value', identity_value = ccvm.id FROM config.coded_value_map AS ccvm WHERE fq_field = 'cam.value' AND ccvm.ctype = 'audience' AND identity_value = ccvm.code;
115 UPDATE config.i18n_core SET fq_field = 'ccvm.value', identity_value = ccvm.id FROM config.coded_value_map AS ccvm WHERE fq_field = 'cvrfm.value' AND ccvm.ctype = 'vr_format' AND identity_value = ccvm.code;
117 UPDATE config.i18n_core SET fq_field = 'ccvm.description', identity_value = ccvm.id FROM config.coded_value_map AS ccvm WHERE fq_field = 'clfm.description' AND ccvm.ctype = 'lit_form' AND identity_value = ccvm.code;
118 UPDATE config.i18n_core SET fq_field = 'ccvm.description', identity_value = ccvm.id FROM config.coded_value_map AS ccvm WHERE fq_field = 'cam.description' AND ccvm.ctype = 'audience' AND identity_value = ccvm.code;
120 CREATE VIEW config.language_map AS SELECT code, value FROM config.coded_value_map WHERE ctype = 'item_lang';
121 CREATE VIEW config.bib_level_map AS SELECT code, value FROM config.coded_value_map WHERE ctype = 'bib_level';
122 CREATE VIEW config.item_form_map AS SELECT code, value FROM config.coded_value_map WHERE ctype = 'item_form';
123 CREATE VIEW config.item_type_map AS SELECT code, value FROM config.coded_value_map WHERE ctype = 'item_type';
124 CREATE VIEW config.lit_form_map AS SELECT code, value, description FROM config.coded_value_map WHERE ctype = 'lit_form';
125 CREATE VIEW config.audience_map AS SELECT code, value, description FROM config.coded_value_map WHERE ctype = 'audience';
126 CREATE VIEW config.videorecording_format_map AS SELECT code, value FROM config.coded_value_map WHERE ctype = 'vr_format';
128 CREATE TABLE metabib.record_attr (
129 id BIGINT PRIMARY KEY REFERENCES biblio.record_entry (id) ON DELETE CASCADE,
130 attrs HSTORE NOT NULL DEFAULT ''::HSTORE
132 CREATE INDEX metabib_svf_attrs_idx ON metabib.record_attr USING GIST (attrs);
133 CREATE INDEX metabib_svf_date1_idx ON metabib.record_attr ( (attrs->'date1') );
134 CREATE INDEX metabib_svf_dates_idx ON metabib.record_attr ( (attrs->'date1'), (attrs->'date2') );
136 INSERT INTO metabib.record_attr (id,attrs)
137 SELECT mrd.record, hstore(mrd) - '{id,record}'::TEXT[] FROM metabib.rec_descriptor mrd;
139 -- Back-compat view ... we're moving to an HSTORE world
140 CREATE TYPE metabib.rec_desc_type AS (
158 DROP TABLE metabib.rec_descriptor CASCADE;
160 CREATE VIEW metabib.rec_descriptor AS
163 (populate_record(NULL::metabib.rec_desc_type, attrs)).*
164 FROM metabib.record_attr;
166 CREATE OR REPLACE FUNCTION vandelay.marc21_record_type( marc TEXT ) RETURNS config.marc21_rec_type_map AS $func$
173 retval config.marc21_rec_type_map%ROWTYPE;
175 ldr := oils_xpath_string( '//*[local-name()="leader"]', marc );
177 IF ldr IS NULL OR ldr = '' THEN
178 SELECT * INTO retval FROM config.marc21_rec_type_map WHERE code = 'BKS';
182 SELECT * INTO tval_rec FROM config.marc21_ff_pos_map WHERE fixed_field = 'Type' LIMIT 1; -- They're all the same
183 SELECT * INTO bval_rec FROM config.marc21_ff_pos_map WHERE fixed_field = 'BLvl' LIMIT 1; -- They're all the same
186 tval := SUBSTRING( ldr, tval_rec.start_pos + 1, tval_rec.length );
187 bval := SUBSTRING( ldr, bval_rec.start_pos + 1, bval_rec.length );
189 -- RAISE NOTICE 'type %, blvl %, ldr %', tval, bval, ldr;
191 SELECT * INTO retval FROM config.marc21_rec_type_map WHERE type_val LIKE '%' || tval || '%' AND blvl_val LIKE '%' || bval || '%';
194 IF retval.code IS NULL THEN
195 SELECT * INTO retval FROM config.marc21_rec_type_map WHERE code = 'BKS';
200 $func$ LANGUAGE PLPGSQL;
202 CREATE OR REPLACE FUNCTION biblio.marc21_record_type( rid BIGINT ) RETURNS config.marc21_rec_type_map AS $func$
203 SELECT * FROM vandelay.marc21_record_type( (SELECT marc FROM biblio.record_entry WHERE id = $1) );
206 CREATE OR REPLACE FUNCTION vandelay.marc21_extract_fixed_field( marc TEXT, ff TEXT ) RETURNS TEXT AS $func$
213 rtype := (vandelay.marc21_record_type( marc )).code;
214 FOR ff_pos IN SELECT * FROM config.marc21_ff_pos_map WHERE fixed_field = ff AND rec_type = rtype ORDER BY tag DESC LOOP
215 FOR tag_data IN SELECT value FROM UNNEST( oils_xpath( '//*[@tag="' || UPPER(ff_pos.tag) || '"]/text()', marc ) ) x(value) LOOP
216 val := SUBSTRING( tag_data.value, ff_pos.start_pos + 1, ff_pos.length );
219 val := REPEAT( ff_pos.default_val, ff_pos.length );
225 $func$ LANGUAGE PLPGSQL;
227 CREATE OR REPLACE FUNCTION biblio.marc21_extract_fixed_field( rid BIGINT, ff TEXT ) RETURNS TEXT AS $func$
228 SELECT * FROM vandelay.marc21_extract_fixed_field( (SELECT marc FROM biblio.record_entry WHERE id = $1), $2 );
231 CREATE TYPE biblio.record_ff_map AS (record BIGINT, ff_name TEXT, ff_value TEXT);
232 CREATE OR REPLACE FUNCTION vandelay.marc21_extract_all_fixed_fields( marc TEXT ) RETURNS SETOF biblio.record_ff_map AS $func$
237 output biblio.record_ff_map%ROWTYPE;
239 rtype := (vandelay.marc21_record_type( marc )).code;
241 FOR ff_pos IN SELECT * FROM config.marc21_ff_pos_map WHERE rec_type = rtype ORDER BY tag DESC LOOP
242 output.ff_name := ff_pos.fixed_field;
243 output.ff_value := NULL;
245 FOR tag_data IN SELECT value FROM UNNEST( oils_xpath( '//*[@tag="' || UPPER(tag) || '"]/text()', marc ) ) x(value) LOOP
246 output.ff_value := SUBSTRING( tag_data.value, ff_pos.start_pos + 1, ff_pos.length );
247 IF output.ff_value IS NULL THEN output.ff_value := REPEAT( ff_pos.default_val, ff_pos.length ); END IF;
249 output.ff_value := NULL;
256 $func$ LANGUAGE PLPGSQL;
258 CREATE OR REPLACE FUNCTION biblio.marc21_extract_all_fixed_fields( rid BIGINT ) RETURNS SETOF biblio.record_ff_map AS $func$
259 SELECT $1 AS record, ff_name, ff_value FROM vandelay.marc21_extract_all_fixed_fields( (SELECT marc FROM biblio.record_entry WHERE id = $1) );
262 CREATE OR REPLACE FUNCTION vandelay.marc21_physical_characteristics( marc TEXT) RETURNS SETOF biblio.marc21_physical_characteristics AS $func$
266 ptype config.marc21_physical_characteristic_type_map%ROWTYPE;
267 psf config.marc21_physical_characteristic_subfield_map%ROWTYPE;
268 pval config.marc21_physical_characteristic_value_map%ROWTYPE;
269 retval biblio.marc21_physical_characteristics%ROWTYPE;
272 _007 := oils_xpath_string( '//*[@tag="007"]', marc );
274 IF _007 IS NOT NULL AND _007 <> '' THEN
275 SELECT * INTO ptype FROM config.marc21_physical_characteristic_type_map WHERE ptype_key = SUBSTRING( _007, 1, 1 );
277 IF ptype.ptype_key IS NOT NULL THEN
278 FOR psf IN SELECT * FROM config.marc21_physical_characteristic_subfield_map WHERE ptype_key = ptype.ptype_key LOOP
279 SELECT * INTO pval FROM config.marc21_physical_characteristic_value_map WHERE ptype_subfield = psf.id AND value = SUBSTRING( _007, psf.start_pos + 1, psf.length );
281 IF pval.id IS NOT NULL THEN
284 retval.ptype := ptype.ptype_key;
285 retval.subfield := psf.id;
286 retval.value := pval.id;
296 $func$ LANGUAGE PLPGSQL;
298 CREATE OR REPLACE FUNCTION biblio.marc21_physical_characteristics( rid BIGINT ) RETURNS SETOF biblio.marc21_physical_characteristics AS $func$
299 SELECT id, $1 AS record, ptype, subfield, value FROM vandelay.marc21_physical_characteristics( (SELECT marc FROM biblio.record_entry WHERE id = $1) );
302 CREATE OR REPLACE FUNCTION biblio.indexing_ingest_or_delete () RETURNS TRIGGER AS $func$
304 transformed_xml TEXT;
307 xfrm config.xml_transform%ROWTYPE;
309 new_attrs HSTORE := ''::HSTORE;
310 attr_def config.record_attr_definition%ROWTYPE;
313 IF NEW.deleted IS TRUE THEN -- If this bib is deleted
314 DELETE FROM metabib.metarecord_source_map WHERE source = NEW.id; -- Rid ourselves of the search-estimate-killing linkage
315 DELETE FROM metabib.record_attr WHERE id = NEW.id; -- Kill the attrs hash, useless on deleted records
316 DELETE FROM authority.bib_linking WHERE bib = NEW.id; -- Avoid updating fields in bibs that are no longer visible
317 RETURN NEW; -- and we're done
320 IF TG_OP = 'UPDATE' THEN -- re-ingest?
321 PERFORM * FROM config.internal_flag WHERE name = 'ingest.reingest.force_on_same_marc' AND enabled;
323 IF NOT FOUND AND OLD.marc = NEW.marc THEN -- don't do anything if the MARC didn't change
328 -- Record authority linking
329 PERFORM * FROM config.internal_flag WHERE name = 'ingest.disable_authority_linking' AND enabled;
331 PERFORM biblio.map_authority_linking( NEW.id, NEW.marc );
334 -- Flatten and insert the mfr data
335 PERFORM * FROM config.internal_flag WHERE name = 'ingest.disable_metabib_full_rec' AND enabled;
337 PERFORM metabib.reingest_metabib_full_rec(NEW.id);
339 -- Now we pull out attribute data, which is dependent on the mfr for all but XPath-based fields
340 PERFORM * FROM config.internal_flag WHERE name = 'ingest.disable_metabib_rec_descriptor' AND enabled;
342 FOR attr_def IN SELECT * FROM config.record_attr_definition ORDER BY format LOOP
344 IF attr_def.tag IS NOT NULL THEN -- tag (and optional subfield list) selection
345 SELECT ARRAY_TO_STRING(ARRAY_ACCUM(value), COALESCE(attr_def.joiner,' ')) INTO attr_value
346 FROM (SELECT * FROM metabib.full_rec ORDER BY tag, subfield) AS x
347 WHERE record = NEW.id
348 AND tag LIKE attr_def.tag
350 WHEN attr_def.sf_list IS NOT NULL
351 THEN POSITION(subfield IN attr_def.sf_list) > 0
358 ELSIF attr_def.fixed_field IS NOT NULL THEN -- a named fixed field, see config.marc21_ff_pos_map.fixed_field
359 attr_value := biblio.marc21_extract_fixed_field(NEW.id, attr_def.fixed_field);
361 ELSIF attr_def.xpath IS NOT NULL THEN -- and xpath expression
363 SELECT INTO xfrm * FROM config.xml_transform WHERE name = attr_def.format;
365 -- See if we can skip the XSLT ... it's expensive
366 IF prev_xfrm IS NULL OR prev_xfrm <> xfrm.name THEN
367 -- Can't skip the transform
368 IF xfrm.xslt <> '---' THEN
369 transformed_xml := oils_xslt_process(NEW.marc,xfrm.xslt);
371 transformed_xml := NEW.marc;
374 prev_xfrm := xfrm.name;
377 IF xfrm.name IS NULL THEN
378 -- just grab the marcxml (empty) transform
379 SELECT INTO xfrm * FROM config.xml_transform WHERE xslt = '---' LIMIT 1;
380 prev_xfrm := xfrm.name;
383 attr_value := oils_xpath_string(attr_def.xpath, transformed_xml, COALESCE(attr_def.joiner,' '), ARRAY[ARRAY[xfrm.prefix, xfrm.namespace_uri]]);
385 ELSIF attr_def.phys_char_sf IS NOT NULL THEN -- a named Physical Characteristic, see config.marc21_physical_characteristic_*_map
386 SELECT value::TEXT INTO attr_value
387 FROM biblio.marc21_physical_characteristics(NEW.id)
388 WHERE subfield = attr_def.phys_char_sf
389 LIMIT 1; -- Just in case ...
393 -- apply index normalizers to attr_value
395 SELECT n.func AS func,
396 n.param_count AS param_count,
398 FROM config.index_normalizer n
399 JOIN config.record_attr_index_norm_map m ON (m.norm = n.id)
400 WHERE attr = attr_def.name
402 EXECUTE 'SELECT ' || normalizer.func || '(' ||
403 quote_literal( attr_value ) ||
405 WHEN normalizer.param_count > 0
406 THEN ',' || REPLACE(REPLACE(BTRIM(normalizer.params,'[]'),E'\'',E'\\\''),E'"',E'\'')
413 -- Add the new value to the hstore
414 new_attrs := new_attrs || hstore( attr_def.name, attr_value );
418 IF TG_OP = 'INSERT' OR OLD.deleted THEN -- initial insert OR revivication
419 INSERT INTO metabib.record_attr (id, attrs) VALUES (NEW.id, new_attrs);
421 UPDATE metabib.record_attr SET attrs = attrs || new_attrs WHERE id = NEW.id;
427 -- Gather and insert the field entry data
428 PERFORM metabib.reingest_metabib_field_entries(NEW.id);
431 IF TG_OP = 'INSERT' THEN
432 PERFORM * FROM config.internal_flag WHERE name = 'ingest.disable_located_uri' AND enabled;
434 PERFORM biblio.extract_located_uris( NEW.id, NEW.marc, NEW.editor );
437 PERFORM * FROM config.internal_flag WHERE name = 'ingest.disable_located_uri' AND enabled;
439 PERFORM biblio.extract_located_uris( NEW.id, NEW.marc, NEW.editor );
443 -- (re)map metarecord-bib linking
444 IF TG_OP = 'INSERT' THEN -- if not deleted and performing an insert, check for the flag
445 PERFORM * FROM config.internal_flag WHERE name = 'ingest.metarecord_mapping.skip_on_insert' AND enabled;
447 PERFORM metabib.remap_metarecord_for_bib( NEW.id, NEW.fingerprint );
449 ELSE -- we're doing an update, and we're not deleted, remap
450 PERFORM * FROM config.internal_flag WHERE name = 'ingest.metarecord_mapping.skip_on_update' AND enabled;
452 PERFORM metabib.remap_metarecord_for_bib( NEW.id, NEW.fingerprint );
458 $func$ LANGUAGE PLPGSQL;
460 DROP FUNCTION metabib.reingest_metabib_rec_descriptor( bib_id BIGINT );
462 CREATE OR REPLACE FUNCTION public.approximate_date( TEXT, TEXT ) RETURNS TEXT AS $func$
463 SELECT REGEXP_REPLACE( $1, E'\\D', $2, 'g' );
464 $func$ LANGUAGE SQL STRICT IMMUTABLE;
466 CREATE OR REPLACE FUNCTION public.approximate_low_date( TEXT ) RETURNS TEXT AS $func$
467 SELECT approximate_date( $1, '0');
468 $func$ LANGUAGE SQL STRICT IMMUTABLE;
470 CREATE OR REPLACE FUNCTION public.approximate_high_date( TEXT ) RETURNS TEXT AS $func$
471 SELECT approximate_date( $1, '9');
472 $func$ LANGUAGE SQL STRICT IMMUTABLE;
474 CREATE OR REPLACE FUNCTION public.integer_or_null( TEXT ) RETURNS TEXT AS $func$
475 SELECT CASE WHEN $1 ~ E'^\\d+$' THEN $1 ELSE NULL END
476 $func$ LANGUAGE SQL STRICT IMMUTABLE;
478 CREATE OR REPLACE FUNCTION public.content_or_null( TEXT ) RETURNS TEXT AS $func$
479 SELECT CASE WHEN $1 ~ E'^\\s*$' THEN NULL ELSE $1 END
480 $func$ LANGUAGE SQL STRICT IMMUTABLE;
482 CREATE OR REPLACE FUNCTION public.force_to_isbn13( TEXT ) RETURNS TEXT AS $func$
487 # Find the first ISBN, force it to ISBN13 and return it
491 foreach my $word (split(/\s/, $input)) {
492 my $isbn = Business::ISBN->new($word);
494 # First check the checksum; if it is not valid, fix it and add the original
495 # bad-checksum ISBN to the output
496 if ($isbn && $isbn->is_valid_checksum() == Business::ISBN::BAD_CHECKSUM) {
497 $isbn->fix_checksum();
500 # If we now have a valid ISBN, force it to ISBN13 and return it
501 return $isbn->as_isbn13->isbn if ($isbn && $isbn->is_valid());
504 $func$ LANGUAGE PLPERLU;
506 COMMENT ON FUNCTION public.force_to_isbn13(TEXT) IS $$
508 * Copyright (C) 2011 Equinox Software
509 * Mike Rylander <mrylander@gmail.com>
511 * Inspired by translate_isbn1013
513 * The force_to_isbn13 function takes an input ISBN and returns the ISBN13
514 * version without hypens and with a repaired checksum if the checksum was bad