DROP MATERIALIZED VIEW IF EXISTS mv_category_locale_safexmlpath;
CREATE MATERIALIZED VIEW mv_category_locale_safexmlpath AS
SELECT
    c.id AS category_id,
    c.locale_id,
    getsafexmlpath(
        ( SELECT lower(array_to_string(array_agg(main_1.parent_name), '/'::text))
           FROM ( SELECT node.id,
                    ( SELECT category_texts.name
                           FROM category_texts
                          WHERE ((category_texts.locale_id = c.locale_id) AND (category_texts.category_id = parent.id))) AS parent_name
                   FROM categories node,
                    categories parent
                  WHERE ((node.lft >= parent.lft) AND (node.lft <= parent.rgt) AND (node.id = c.id))
                  ORDER BY parent.lft) main_1
          GROUP BY main_1.id),
        2
    ) AS safe_xml_path
FROM (
    SELECT c_1.id,
         s.id AS locale_id
    FROM locales s
    JOIN category_texts s_t ON s.id = s_t.locale_id
    JOIN categories c_1 ON s_t.category_id = c_1.id
) c;

CREATE UNIQUE INDEX ON mv_category_locale_safexmlpath (category_id, locale_id);
CREATE INDEX ON mv_category_locale_safexmlpath (locale_id, safe_xml_path);

COMMENT ON MATERIALIZED VIEW  IS 'Materialized view for fast lookup of category id from localized safe xml path and locale. Path construction logic mirrors v_esales_categorytree_i18n_unmaterialized but additionally applies the getsafexmlpath(..., 2) function.';
ALTER MATERIALIZED VIEW mv_category_locale_safexmlpath OWNER TO Photowall;