3 INSERT INTO config.upgrade_log (version) VALUES ('0035'); -- miker
5 CREATE FUNCTION version_specific_xpath () RETURNS TEXT AS $wrapper_function$
10 IF REGEXP_REPLACE(VERSION(),E'^.+?(\\d+\\.\\d+).*?$',E'\\1')::FLOAT < 8.3 THEN
11 out_text := 'Creating XPath functions that work like the native XPATH function in 8.3+';
13 EXECUTE $create_82_funcs$
15 CREATE OR REPLACE FUNCTION oils_xpath ( xpath TEXT, xml TEXT, ns ANYARRAY ) RETURNS TEXT[] AS $func$
22 munged_xpath := xpath;
24 IF ns IS NOT NULL THEN
25 FOR namespace IN 1 .. array_upper(ns, 1) LOOP
26 munged_xpath := REGEXP_REPLACE(
28 E'(' || ns[namespace][1] || E'):(\\w+)',
29 E'*[local-name() = "\\2" and namespace-uri() = "' || ns[namespace][2] || E'"]',
34 munged_xpath := REGEXP_REPLACE( munged_xpath, E'\\]\\[(\\D)',E' and \\1', 'g');
37 node_text := xpath_nodeset(xml, munged_xpath, 'XXX_OILS_NODESET');
38 node_text := REGEXP_REPLACE(node_text,'^<XXX_OILS_NODESET>', '');
39 node_text := REGEXP_REPLACE(node_text,'</XXX_OILS_NODESET>$', '');
41 RETURN STRING_TO_ARRAY(node_text, '</XXX_OILS_NODESET><XXX_OILS_NODESET>');
43 $func$ LANGUAGE PLPGSQL;
45 CREATE OR REPLACE FUNCTION oils_xpath ( TEXT, TEXT ) RETURNS TEXT[] AS 'SELECT oils_xpath( $1, $2, NULL::TEXT[] );' LANGUAGE SQL;
49 out_text := 'Creating XPath wrapper functions around the native XPATH function in 8.3+';
51 EXECUTE $create_83_funcs$
53 CREATE OR REPLACE FUNCTION oils_xpath ( TEXT, TEXT, ANYARRAY ) RETURNS TEXT[] AS 'SELECT XPATH( $1, $2::XML, $3 )::TEXT[];' LANGUAGE SQL;
54 CREATE OR REPLACE FUNCTION oils_xpath ( TEXT, TEXT ) RETURNS TEXT[] AS 'SELECT XPATH( $1, $2::XML )::TEXT[];' LANGUAGE SQL;
62 $wrapper_function$ LANGUAGE PLPGSQL;
64 SELECT version_specific_xpath();
65 DROP FUNCTION version_specific_xpath();
67 CREATE TYPE metabib.field_entry_template AS (
74 CREATE OR REPLACE FUNCTION biblio.extract_metabib_field_entry ( rid BIGINT, default_joiner TEXT ) RETURNS SETOF metabib.field_entry_template AS $func$
76 bib biblio.record_entry%ROWTYPE;
77 idx config.metabib_field%ROWTYPE;
78 xfrm config.xml_transform%ROWTYPE;
84 joiner TEXT := default_joiner; -- XXX will index defs supply a joiner?
85 output_row metabib.field_entry_template%ROWTYPE;
89 SELECT INTO bib * FROM biblio.record_entry WHERE id = rid;
91 -- Loop over the indexing entries
92 FOR idx IN SELECT * FROM config.metabib_field ORDER BY format LOOP
94 SELECT INTO xfrm * from config.xml_transform WHERE name = idx.format;
96 -- See if we can skip the XSLT ... it's expensive
97 IF prev_xfrm IS NULL OR prev_xfrm <> xfrm.name THEN
98 -- Can't skip the transform
99 IF xfrm.xslt <> '---' THEN
100 transformed_xml := xslt_process(bib.marc,xfrm.xslt);
102 transformed_xml := bib.marc;
105 prev_xfrm := xfrm.name;
108 xml_node_list := oils_xpath( idx.xpath, transformed_xml, ARRAY[ARRAY[xfrm.prefix, xfrm.namespace_uri]] );
111 FOR xml_node IN SELECT x FROM explode_array(xml_node_list) AS x LOOP
112 IF raw_text IS NOT NULL THEN
113 raw_text := raw_text || joiner;
115 raw_text := COALESCE(raw_text,'') || ARRAY_TO_STRING(oils_xpath( '//text()', xml_node ), ' ');
118 CONTINUE WHEN raw_text IS NULL;
120 output_row.field_class = idx.field_class;
121 output_row.field = idx.id;
122 output_row.source = rid;
123 output_row.value = BTRIM(REGEXP_REPLACE(raw_text, E'\\s+', ' ', 'gs'));
125 RETURN NEXT output_row;
130 $func$ LANGUAGE PLPGSQL;
132 -- default to a space joiner
133 CREATE OR REPLACE FUNCTION biblio.extract_metabib_field_entry ( BIGINT ) RETURNS SETOF metabib.field_entry_template AS $func$
134 SELECT * FROM biblio.extract_metabib_field_entry($1, ' ');