CREATE TABLE word (
form text NOT NULL,
+ alt text[],
lang text NOT NULL DEFAULT 'eng',
cat integer REFERENCES word (id),
ref integer REFERENCES word (id),
prio smallint NOT NULL DEFAULT '1',
+ grade integer,
+ cover boolean NOT NULL DEFAULT FALSE,
source text,
thumb text[],
wptitle text,
);
COMMENT ON COLUMN word.form IS 'preferred textual representation';
+COMMENT ON COLUMN word.alt IS 'alternate forms with equivalent meaning';
COMMENT ON COLUMN word.lang IS 'ISO 639-3 language code';
COMMENT ON COLUMN word.cat IS 'hierarchical classification';
COMMENT ON COLUMN word.ref IS 'reference to equivalent eng translation';
COMMENT ON COLUMN word.prio IS 'difficulty level or importance; lower values have precedence';
+COMMENT ON COLUMN word.grade IS 'ascending hierarchical order, preceding default alphabetical';
+COMMENT ON COLUMN word.cover IS 'highlight if selected';
COMMENT ON COLUMN word.source IS 'URI of downloaded image';
COMMENT ON COLUMN word.thumb IS 'ImageMagick convert options to create thumbnail from source image';
COMMENT ON COLUMN word.wptitle IS 'reference Wikipedia article';
+CREATE OR REPLACE FUNCTION exportform(word) RETURNS text AS $$
+ SELECT concat(
+ $1.prio || CASE WHEN $1.cover THEN 'c' ELSE '' END || ':',
+ array_to_string($1.form || $1.alt, '/')
+ );
+$$ LANGUAGE SQL IMMUTABLE;
+
CREATE OR REPLACE VIEW _cat_words AS
- SELECT * FROM word RIGHT JOIN (
- SELECT cat id, array_agg(form ORDER BY form) forms
+ SELECT exportform(word.*) form, sub.*, word.lang, word.ref
+ FROM word RIGHT JOIN (
+ SELECT cat id, array_agg(exportform(word.*) ORDER BY grade, form) forms
FROM word WHERE ref IS NULL GROUP BY cat
) sub USING (id);