CHECK (prio >= 0 OR ref IS NOT NULL),
grade integer,
cover boolean NOT NULL DEFAULT FALSE,
- source text CHECK (source ~ '^https?://'),
- thumb text[],
+ image jsonb CHECK (image->>'source' ~ '^https?://'
+ AND jsonb_typeof(image->'convert') = 'array'),
wptitle text,
story text,
creator integer REFERENCES login (id),
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 language code matching wikipedia subdomain';
-COMMENT ON COLUMN word.cat IS 'hierarchical classification';
+COMMENT ON COLUMN word.cat IS 'primary hierarchical classification';
COMMENT ON COLUMN word.ref IS 'reference to equivalent en 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.image IS 'metadata of illustrations, including downloaded URI and ImageMagick convert options';
COMMENT ON COLUMN word.wptitle IS 'reference Wikipedia article';
COMMENT ON COLUMN word.story IS 'paragraph defining or describing the entity, wikipedia intro';
COMMENT ON COLUMN word.updated IS 'last significant change';
COMMENT ON COLUMN word.creator IS 'user responsible for initial submit';
+CREATE TABLE kind (
+ word integer NOT NULL REFERENCES word (id),
+ cat integer NOT NULL REFERENCES word (id),
+ UNIQUE (word, cat),
+ truth smallint NOT NULL DEFAULT '50',
+ creator integer REFERENCES login (id),
+ created timestamptz DEFAULT now(),
+ updated timestamptz,
+ id serial NOT NULL PRIMARY KEY
+);
+
+COMMENT ON COLUMN kind.truth IS 'link validity ranging from 0 (never) to 100 (always)';
+
CREATE OR REPLACE FUNCTION exportform(word) RETURNS text AS $$
SELECT concat(
$1.id, ':',
coalesce(r.prio, w.prio ) prio,
coalesce(r.grade, w.grade ) grade,
coalesce(r.cover, w.cover ) cover,
- coalesce(r.source, w.source ) source,
- coalesce(r.thumb, w.thumb ) thumb,
+ coalesce(r.image, w.image ) image,
coalesce(r.wptitle, w.wptitle) wptitle,
coalesce(r.story, w.story ) story,
r.creator, r.created, r.updated,
- CASE WHEN r.source IS NULL THEN w.id ELSE r.id END id -- image id
+ CASE WHEN r.image IS NULL THEN w.id ELSE r.id END id -- image id
FROM word r
LEFT JOIN word w ON w.id = r.ref;