);
CREATE TABLE word (
- form text NOT NULL,
+ form text,
alt text[],
- lang text NOT NULL DEFAULT 'en',
+ lang text DEFAULT 'en',
cat integer REFERENCES word (id),
ref integer REFERENCES word (id),
prio smallint DEFAULT '1'
CREATE OR REPLACE FUNCTION exportform(word) RETURNS text AS $$
SELECT concat(
- $1.id, ':',
+ coalesce($1.ref, $1.id), ':',
$1.prio, CASE WHEN $1.cover THEN 'c' ELSE '' END, ':',
array_to_string($1.form || $1.alt, '/')
);
FROM word r
LEFT JOIN word w ON w.id = r.ref;
+CREATE OR REPLACE VIEW _word_tree AS
+ WITH RECURSIVE r AS (
+ SELECT w.ref, w.lang, w.cat, w.grade, NULL::int trans
+ FROM _word_ref w
+ UNION ALL
+ SELECT r.ref, r.lang, w.cat,
+ CASE WHEN w.lang=r.lang OR t.lang=r.lang THEN r.grade ELSE w.grade END,
+ CASE WHEN w.lang=r.lang OR t.lang=r.lang THEN w.id END
+ FROM r JOIN word w ON w.id = r.cat
+ LEFT JOIN word t ON w.id = t.ref AND t.lang = r.lang
+ WHERE r.trans IS NULL
+ )
+ SELECT ref, lang, trans cat, grade FROM r WHERE trans IS NOT NULL
+ ORDER BY cat, grade, ref;
+
+CREATE OR REPLACE VIEW _word AS
+ SELECT
+ (SELECT array_agg(coalesce(ref, id)) FROM _word_tree
+ WHERE cat = w.ref AND lang = w.lang) sub,
+ w.*
+ FROM _word_ref w
+ ;
+
CREATE OR REPLACE VIEW _cat_words AS
SELECT exportform(word.*) form, sub.*, word.lang, word.ref
FROM word RIGHT JOIN (