egdb3_11_7.metabib

Parameters

Name	Type	Mode
raw_query_text	text	IN
search_class	text	IN
headline_opts	text	IN
visibility_org	integer	IN
query_limit	integer	IN
normalization	integer	IN
value	text	TABLE
field	integer	TABLE
buoyant_and_class_match	boolean	TABLE
field_match	boolean	TABLE
field_weight	integer	TABLE
rank	real	TABLE
buoyant	boolean	TABLE
match	text	TABLE

Definition

DECLARE
    prepared_query_texts    TEXT[];
    query                   TSQUERY;
    plain_query             TSQUERY;
    opac_visibility_join    TEXT;
    search_class_join       TEXT;
    r_fields                RECORD;
    b_tests                 TEXT := '';
BEGIN
    prepared_query_texts := metabib.autosuggest_prepare_tsquery(raw_query_text);

query := TO_TSQUERY('keyword', prepared_query_texts[1]);
    plain_query := TO_TSQUERY('keyword', prepared_query_texts[2]);

visibility_org := NULLIF(visibility_org,-1);
    IF visibility_org IS NOT NULL THEN
        PERFORM FROM actor.org_unit WHERE id = visibility_org AND parent_ou IS NULL;
        IF FOUND THEN
            opac_visibility_join := '';
        ELSE
            PERFORM 1 FROM config.internal_flag WHERE enabled AND name = 'opac.located_uri.act_as_copy';
            IF FOUND THEN
                b_tests := search.calculate_visibility_attribute_test(
                    'luri_org',
                    (SELECT ARRAY_AGG(id) FROM actor.org_unit_full_path(visibility_org))
                );
            ELSE
                b_tests := search.calculate_visibility_attribute_test(
                    'luri_org',
                    (SELECT ARRAY_AGG(id) FROM actor.org_unit_ancestors(visibility_org))
                );
            END IF;
            opac_visibility_join := '
    LEFT JOIN asset.copy_vis_attr_cache acvac ON (acvac.record = x.source)
    LEFT JOIN biblio.record_entry b ON (b.id = x.source)
    JOIN vm ON (acvac.vis_attr_vector @@
            (vm.c_attrs || $$&$$ ||
                search.calculate_visibility_attribute_test(
                    $$circ_lib$$,
                    (SELECT ARRAY_AGG(id) FROM actor.org_unit_descendants($4))
                )
            )::query_int
         ) OR (b.vis_attr_vector @@ $$' || b_tests || '$$::query_int)
';
        END IF;
    ELSE
        opac_visibility_join := '';
    END IF;

-- The following determines whether we only provide suggestsons matching
    -- the user's selected search_class, or whether we show other suggestions
    -- too. The reason for MIN() is that for search_classes like
    -- 'title|proper|uniform' you would otherwise get multiple rows.  The
    -- implication is that if title as a class doesn't have restrict,
    -- nor does the proper field, but the uniform field does, you're going
    -- to get 'false' for your overall evaluation of 'should we restrict?'
    -- To invert that, change from MIN() to MAX().

SELECT
        INTO r_fields
            MIN(cmc.restrict::INT) AS restrict_class,
            MIN(cmf.restrict::INT) AS restrict_field
        FROM metabib.search_class_to_registered_components(search_class)
            AS _registered (field_class TEXT, field INT)
        JOIN
            config.metabib_class cmc ON (cmc.name = _registered.field_class)
        LEFT JOIN
            config.metabib_field cmf ON (cmf.id = _registered.field);

-- evaluate 'should we restrict?'
    IF r_fields.restrict_field::BOOL OR r_fields.restrict_class::BOOL THEN
        search_class_join := '
    JOIN
        metabib.search_class_to_registered_components($2)
        AS _registered (field_class TEXT, field INT) ON (
            (_registered.field IS NULL AND
                _registered.field_class = cmf.field_class) OR
            (_registered.field = cmf.id)
        )
    ';
    ELSE
        search_class_join := '
    LEFT JOIN
        metabib.search_class_to_registered_components($2)
        AS _registered (field_class TEXT, field INT) ON (
            _registered.field_class = cmc.name
        )
    ';
    END IF;

RETURN QUERY EXECUTE '
WITH vm AS ( SELECT * FROM asset.patron_default_visibility_mask() ),
     mbe AS (SELECT * FROM metabib.browse_entry WHERE index_vector @@ $1 LIMIT 10000)
SELECT  DISTINCT
        x.value,
        x.id,
        x.push,
        x.restrict,
        x.weight,
        x.ts_rank_cd,
        x.buoyant,
        TS_HEADLINE(value, $7, $3)
  FROM  (SELECT DISTINCT
                mbe.value,
                cmf.id,
                cmc.buoyant AND _registered.field_class IS NOT NULL AS push,
                _registered.field = cmf.id AS restrict,
                cmf.weight,
                TS_RANK_CD(mbe.index_vector, $1, $6),
                cmc.buoyant,
                mbedm.source
          FROM  metabib.browse_entry_def_map mbedm
                JOIN mbe ON (mbe.id = mbedm.entry)
                JOIN config.metabib_field cmf ON (cmf.id = mbedm.def)
                JOIN config.metabib_class cmc ON (cmf.field_class = cmc.name)
                '  || search_class_join || '
          ORDER BY 3 DESC, 4 DESC NULLS LAST, 5 DESC, 6 DESC, 7 DESC, 1 ASC
          LIMIT 1000) AS x
        ' || opac_visibility_join || '
  ORDER BY 3 DESC, 4 DESC NULLS LAST, 5 DESC, 6 DESC, 7 DESC, 1 ASC
  LIMIT $5
'   -- sic, repeat the order by clause in the outer select too
    USING
        query, search_class, headline_opts,
        visibility_org, query_limit, normalization, plain_query
        ;

-- sort order:
    --  buoyant AND chosen class = match class
    --  chosen field = match field
    --  field weight
    --  rank
    --  buoyancy
    --  value itself

END;

suggest_browse_entries(raw_query_text text, search_class text, headline_opts text, visibility_org integer, query_limit integer, normalization integer)

Parameters

Definition