artifacts.id.nextval=SELECT nextval('ARTIFACTS_ID_SEQ')

artifacts.insert=INSERT INTO artifacts \
    (id, gid, creation, last_access, ttl, factory, data) \
    VALUES (?, ?::uuid, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP, ?, ?, ?)

artifacts.update=UPDATE artifacts SET last_access = CURRENT_TIMESTAMP, \
    data = ? WHERE id = ?

artifacts.touch=UPDATE artifacts SET last_access = CURRENT_TIMESTAMP WHERE id = ?

artifacts.outdated=SELECT id, factory, data FROM artifacts WHERE ttl IS NOT NULL \
    AND CURRENT_TIMESTAMP - last_access > (ttl || ' microseconds')::interval LIMIT 50

artifacts.select.gid=SELECT id, last_access, ttl, factory, data FROM artifacts WHERE gid = ?::uuid

artifacts.get.id=SELECT id FROM artifacts WHERE gid = ?::uuid

artifacts.replace=UPDATE artifacts SET \
    creation = CURRENT_TIMESTAMP, last_access = CURRENT_TIMESTAMP, \
    ttl = ?, factory = ?, data = ? \
    WHERE id = ?

artifacts.delete=DELETE FROM artifacts WHERE id = ?

# USERS

users.id.nextval=SELECT NEXTVAL('USERS_ID_SEQ')

users.insert=INSERT INTO users (id, gid, name, role) VALUES (?, ?, ?, ?)

users.select.id.by.gid=SELECT id FROM users WHERE gid = ?::uuid
users.select.gid=SELECT id, name, role FROM users WHERE gid = ?::uuid

users.delete.id=DELETE FROM users WHERE id = ?

users.delete.collections=DELETE FROM collections where owner_id = ?

users.select.all=SELECT id, gid, name, role FROM users

collection.check.artifact=SELECT id FROM collections_items \
    WHERE artifact_id = ? AND collection_id = ?

# COLLECTION ITEMS
collection.items.id.nextval=SELECT NEXTVAL('COLLECTION_ITEMS_ID_SEQ')

collection.items.insert=INSERT INTO collections_items \
    (id, collection_id, artifact_id, attribute) \
    VALUES (?, ?, ?, ?)

collection.item.get.attribute= \
    SELECT ci.attribute FROM collections_items ci \
        INNER JOIN collection c ON ci.collection_id = c.id \
        INNER JOIN attributes a ON ci.artifact_id = a.id \
        WHERE c.gid = ?::uuid AND a.gid = ?::uuid

collection.item.set.attribute= \
    UPDATE collections_items SET attribute = ? WHERE id IN ( \
        SELECT ci.id FROM collections_items ci \
            INNER JOIN collection c ON ci.collection_id = c.id \
            INNER JOIN attributes a ON ci.artifact_id = a.id \
            WHERE c.gid = ?::uuid AND a.gid = ?::uuid)

collection.item.id.cid.aid= \
    SELECT ci.id, c.collection_id, c.artifact_id FROM collections_items ci \
        INNER JOIN collection c ON ci.collection_id = c.id \
        INNER JOIN attributes a ON ci.artifact_id = a.id \
        WHERE c.gid = ?::uuid AND a.gid = ?::uuid

collection.item.outdate.artifact= \
    UPDATE artifacts \
    SET last_access = CURRENT_TIMESTAMP - '2 microseconds'::interval, ttl = 1 \
    WHERE id = ? AND \
    NOT EXSITS (SELECT id FROM collections_items WHERE <> collection_id = ?)

collection.item.delete=DELETE FROM collections_items WHERE id = ?

# COLLECTIONS
collections.touch.by.gid =\
    UPDATE collection SET last_access = CURRENT_TIMESTAMP \
        WHERE gid = ?::uuid

collections.touch.by.id =\
    UPDATE collection SET last_access = CURRENT_TIMESTAMP \
        WHERE id = ?
collections.id.nextval=SELECT NEXTVAL('COLLECTIONS_ID_SEQ')

collections.id.by.gid=SELECT id FROM collections WHERE gid = ?::uuid

delete.collection.items=DELETE FROM collection_items WHERE collection_id = ?

delete.collection=DELETE FROM collections WHERE id = ?

delete.user.collection.items= \
    DELETE FROM collection_items WHERE collection_id IN \
    (SELECT id FROM collections WHERE owner_id = ?)

collections.insert= \
    INSERT INTO collections (id, gid, name, owner_id, creation, last_access, ttl) \
    VALUES (?, ?::uuid, ?, ?, CURRENT_TIMESTAMP, CURRENT_TIMESTAMP, ?)

collection.creation.time=SELECT creation from collections WHERE id = ?

collections.select.user= \
    SELECT c.gid, c.name, c.creation, u.gid FROM \
    collections c LEFT OUTER JOIN users u ON c.owner_id = u.id \
    WHERE u.gid = ?::uuid

collections.select.all= \
    SELECT c.gid, c.name, c.creation, u.gid FROM \
    collections c LEFT OUTER JOIN users u ON c.owner_id = u.id

users.collections=SELECT collection_id, gid, name FROM collections WHERE owner_id = ?
users.collection.ids=SELECT collection_id FROM collections WHERE owner_id = ?

artifacts.in.one.collection.only=\
    SELECT artifact_id FROM collection_items\
    WHERE collection_id = ? AND\
    artifact_id NOT IN (SELECT DISTINCT artifact_id FROM collection_items WHERE collection_id <> ?)

outdate.artifacts.collection=UPDATE artifacts \
    SET last_access = CURRENT_TIMESTAMP - '2 microseconds'::interval, ttl = 1 \
    WHERE id IN \
    (SELECT artifact_id FROM collection_items \
        WHERE collection_id = ? AND \
        artifact_id NOT IN (SELECT DISTINCT artifact_id FROM collection_items WHERE collection_id <> ?))

outdate.artifacts.user=UPDATE artifacts \
    SET last_access = CURRENT_TIMESTAMP - '2 microseconds'::interval, ttl = 1 \
    WHERE id IN \
    (SELECT artifact_id FROM collection_items WHERE \
        collection_id IN (SELECT id FROM collections WHERE owner_id = ?) \
        AND artifact_id NOT IN \
            (SELECT artifact_id FROM collection_items WHERE collection_id IN \
                (SELECT id FROM collections WHERE owner_id <> ?)))