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Review comment: check that Datalog vars don't have a namespace.

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And fix the only test that uses syntax-quote, which namespace-qualifies bare symbols.
This commit is contained in:
Richard Newman 2016-08-30 12:44:12 -07:00
parent 0f399eafb0
commit 495e5a737e
2 changed files with 17 additions and 13 deletions
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20
src/datomish/util.cljc
View file

@ -30,21 +30,25 @@
~expr
(cond-let ~@rest)))))
(defn ensure-datalog-var [x]
(or (and (symbol? x)
(nil? (namespace x))
(str/starts-with? (name x) "?"))
(throw (ex-info (str x " is not a Datalog var.") {}))))
(defn var->sql-type-var
"Turns '?xyz into :_xyz_type_tag."
[x]
(if (and (symbol? x)
(str/starts-with? (name x) "?"))
(keyword (str "_" (subs (name x) 1) "_type_tag"))
(throw (ex-info (str x " is not a Datalog var.") {}))))
(and
(ensure-datalog-var x)
(keyword (str "_" (subs (name x) 1) "_type_tag"))))
(defn var->sql-var
"Turns '?xyz into :xyz."
[x]
(if (and (symbol? x)
(str/starts-with? (name x) "?"))
(keyword (subs (name x) 1))
(throw (ex-info (str x " is not a Datalog var.") {}))))
(and
(ensure-datalog-var x)
(keyword (subs (name x) 1))))
(defn aggregate->sql-var
"Turns (:max 'column) into :%max.column."

10
test/datomish/query_test.cljc
View file

@ -46,11 +46,11 @@
(let [{tx1 :tx} (<? (d/<transact! conn [{:db/id 101 :x 505}]))]
(is (= (<? (d/<q (d/db conn)
`[:find ?e ?a ?v ?tx :in $ :where
[?e ?a ?v ?tx]
[(> ?tx ~tx0)]
[(!= ?a ~(d/entid (d/db conn) :db/txInstant))] ;; TODO: map ident->entid for values.
] {}))
[:find '?e '?a '?v '?tx :in '$ :where
'[?e ?a ?v ?tx]
[(list '> '?tx tx0)]
[(list '!= '?a (d/entid (d/db conn) :db/txInstant))] ;; TODO: map ident->entid for values.
] {}))
[[101 (d/entid (d/db conn) :x) 505 tx1]]))) ;; TODO: map entid->ident on egress.
(finally
(<? (d/<close conn)))))))