--- /dev/null
+BEGIN;
+
+CREATE OR REPLACE FUNCTION metabib.staged_browse(query text, fields integer[], context_org integer, context_locations integer[], staff boolean, browse_superpage_size integer, count_up_from_zero boolean, result_limit integer, next_pivot_pos integer)
+ RETURNS SETOF metabib.flat_browse_entry_appearance
+AS $f$
+DECLARE
+ curs REFCURSOR;
+ rec RECORD;
+ qpfts_query TEXT;
+ aqpfts_query TEXT;
+ afields INT[];
+ bfields INT[];
+ result_row metabib.flat_browse_entry_appearance%ROWTYPE;
+ results_skipped INT := 0;
+ row_counter INT := 0;
+ row_number INT;
+ slice_start INT;
+ slice_end INT;
+ full_end INT;
+ all_records BIGINT[];
+ all_brecords BIGINT[];
+ all_arecords BIGINT[];
+ superpage_of_records BIGINT[];
+ superpage_size INT;
+ c_tests TEXT := '';
+ b_tests TEXT := '';
+ c_orgs INT[];
+ unauthorized_entry RECORD;
+BEGIN
+ IF count_up_from_zero THEN
+ row_number := 0;
+ ELSE
+ row_number := -1;
+ END IF;
+
+ IF NOT staff THEN
+ SELECT x.c_attrs, x.b_attrs INTO c_tests, b_tests FROM asset.patron_default_visibility_mask() x;
+ END IF;
+
+ -- b_tests supplies its own query_int operator, c_tests does not
+ IF c_tests <> '' THEN c_tests := c_tests || '&'; END IF;
+
+ SELECT ARRAY_AGG(id) INTO c_orgs FROM actor.org_unit_descendants(context_org);
+
+ c_tests := c_tests || search.calculate_visibility_attribute_test('circ_lib',c_orgs)
+ || '&' || search.calculate_visibility_attribute_test('owning_lib',c_orgs);
+
+ PERFORM 1 FROM config.internal_flag WHERE enabled AND name = 'opac.located_uri.act_as_copy';
+ IF FOUND THEN
+ b_tests := b_tests || search.calculate_visibility_attribute_test(
+ 'luri_org',
+ (SELECT ARRAY_AGG(id) FROM actor.org_unit_full_path(context_org) x)
+ );
+ ELSE
+ b_tests := b_tests || search.calculate_visibility_attribute_test(
+ 'luri_org',
+ (SELECT ARRAY_AGG(id) FROM actor.org_unit_ancestors(context_org) x)
+ );
+ END IF;
+
+ IF context_locations THEN
+ IF c_tests <> '' THEN c_tests := c_tests || '&'; END IF;
+ c_tests := c_tests || search.calculate_visibility_attribute_test('location',context_locations);
+ END IF;
+
+ OPEN curs NO SCROLL FOR EXECUTE query;
+
+ LOOP
+ FETCH curs INTO rec;
+ IF NOT FOUND THEN
+ IF result_row.pivot_point IS NOT NULL THEN
+ RETURN NEXT result_row;
+ END IF;
+ RETURN;
+ END IF;
+
+ --Is unauthorized?
+ SELECT INTO unauthorized_entry *
+ FROM metabib.browse_entry_simple_heading_map mbeshm
+ INNER JOIN authority.simple_heading ash ON ( mbeshm.simple_heading = ash.id )
+ INNER JOIN authority.control_set_authority_field acsaf ON ( acsaf.id = ash.atag )
+ JOIN authority.heading_field ahf ON (ahf.id = acsaf.heading_field)
+ WHERE mbeshm.entry = rec.id
+ AND ahf.heading_purpose = 'variant';
+
+ -- Gather aggregate data based on the MBE row we're looking at now, authority axis
+ IF (unauthorized_entry.record IS NOT NULL) THEN
+ --unauthorized term belongs to an auth linked to a bib?
+ SELECT INTO all_arecords, result_row.sees, afields
+ ARRAY_AGG(DISTINCT abl.bib),
+ STRING_AGG(DISTINCT abl.authority::TEXT, $$,$$),
+ ARRAY_AGG(DISTINCT map.metabib_field)
+ FROM authority.bib_linking abl
+ INNER JOIN authority.control_set_auth_field_metabib_field_map_refs map ON (
+ map.authority_field = unauthorized_entry.atag
+ AND map.metabib_field = ANY(fields)
+ )
+ WHERE abl.authority = unauthorized_entry.record;
+ ELSE
+ --do usual procedure
+ SELECT INTO all_arecords, result_row.sees, afields
+ ARRAY_AGG(DISTINCT abl.bib), -- bibs to check for visibility
+ STRING_AGG(DISTINCT aal.source::TEXT, $$,$$), -- authority record ids
+ ARRAY_AGG(DISTINCT map.metabib_field) -- authority-tag-linked CMF rows
+
+ FROM metabib.browse_entry_simple_heading_map mbeshm
+ JOIN authority.simple_heading ash ON ( mbeshm.simple_heading = ash.id )
+ JOIN authority.authority_linking aal ON ( ash.record = aal.source )
+ JOIN authority.bib_linking abl ON ( aal.target = abl.authority )
+ JOIN authority.control_set_auth_field_metabib_field_map_refs map ON (
+ ash.atag = map.authority_field
+ AND map.metabib_field = ANY(fields)
+ )
+ JOIN authority.control_set_authority_field acsaf ON (
+ map.authority_field = acsaf.id
+ )
+ JOIN authority.heading_field ahf ON (ahf.id = acsaf.heading_field)
+ WHERE mbeshm.entry = rec.id
+ AND ahf.heading_purpose = 'variant';
+
+ END IF;
+
+ -- Gather aggregate data based on the MBE row we're looking at now, bib axis
+ SELECT INTO all_brecords, result_row.authorities, bfields
+ ARRAY_AGG(DISTINCT source),
+ STRING_AGG(DISTINCT authority::TEXT, $$,$$),
+ ARRAY_AGG(DISTINCT def)
+ FROM metabib.browse_entry_def_map
+ WHERE entry = rec.id
+ AND def = ANY(fields);
+
+ SELECT INTO result_row.fields STRING_AGG(DISTINCT x::TEXT, $$,$$) FROM UNNEST(afields || bfields) x;
+
+ result_row.sources := 0;
+ result_row.asources := 0;
+
+ -- Bib-linked vis checking
+ IF ARRAY_UPPER(all_brecords,1) IS NOT NULL THEN
+
+ SELECT INTO result_row.sources COUNT(DISTINCT b.id)
+ FROM biblio.record_entry b
+ JOIN asset.copy_vis_attr_cache acvac ON (acvac.record = b.id)
+ WHERE b.id = ANY(all_brecords[1:browse_superpage_size])
+ AND (
+ acvac.vis_attr_vector @@ c_tests::query_int
+ OR b.vis_attr_vector @@ b_tests::query_int
+ );
+
+ result_row.accurate := TRUE;
+
+ END IF;
+
+ -- Authority-linked vis checking
+ IF ARRAY_UPPER(all_arecords,1) IS NOT NULL THEN
+
+ SELECT INTO result_row.asources COUNT(DISTINCT b.id)
+ FROM biblio.record_entry b
+ JOIN asset.copy_vis_attr_cache acvac ON (acvac.record = b.id)
+ WHERE b.id = ANY(all_arecords[1:browse_superpage_size])
+ AND (
+ acvac.vis_attr_vector @@ c_tests::query_int
+ OR b.vis_attr_vector @@ b_tests::query_int
+ );
+
+ result_row.aaccurate := TRUE;
+
+ END IF;
+
+ IF result_row.sources > 0 OR result_row.asources > 0 THEN
+
+ -- The function that calls this function needs row_number in order
+ -- to correctly order results from two different runs of this
+ -- functions.
+ result_row.row_number := row_number;
+
+ -- Now, if row_counter is still less than limit, return a row. If
+ -- not, but it is less than next_pivot_pos, continue on without
+ -- returning actual result rows until we find
+ -- that next pivot, and return it.
+
+ IF row_counter < result_limit THEN
+ result_row.browse_entry := rec.id;
+ result_row.value := rec.value;
+
+ RETURN NEXT result_row;
+ ELSE
+ result_row.browse_entry := NULL;
+ result_row.authorities := NULL;
+ result_row.fields := NULL;
+ result_row.value := NULL;
+ result_row.sources := NULL;
+ result_row.sees := NULL;
+ result_row.accurate := NULL;
+ result_row.aaccurate := NULL;
+ result_row.pivot_point := rec.id;
+
+ IF row_counter >= next_pivot_pos THEN
+ RETURN NEXT result_row;
+ RETURN;
+ END IF;
+ END IF;
+
+ IF count_up_from_zero THEN
+ row_number := row_number + 1;
+ ELSE
+ row_number := row_number - 1;
+ END IF;
+
+ -- row_counter is different from row_number.
+ -- It simply counts up from zero so that we know when
+ -- we've reached our limit.
+ row_counter := row_counter + 1;
+ END IF;
+ END LOOP;
+END;
+$f$ LANGUAGE plpgsql ROWS 10;
+
+COMMIT;
+
projects / evergreen-equinox.git / commitdiff