Commit graph

17 commits

Author SHA1 Message Date
Nick Alexander
29d409be64 Tag values with value type tags in SQLite. 2016-08-19 12:27:39 -07:00
Nick Alexander
cfe753a3bd Add d/{ident,entid} for mapping between keyword idents and integer entids. 2016-08-19 12:27:39 -07:00
Nick Alexander
d8c976c3ad Follow-up: split the monolith!
This was a little more tricky than might be expected because the
initialization process uses the transactor to bootstrap the database.
Since Clojure doesn't accept mutually recursive modules, this
necessitated a third module, namely "db-factory", which uses both "db"
and "transact".  While I was here, I started an "api" module, to paper
over the potentially complicated internal module structure for external
consumers.  In time, this "api" module may also grow CLJS-specific JS
transformations.
2016-08-04 17:54:32 -07:00
Nick Alexander
73b155cfdc Follow-up: don't accept schema when creating DB.
This schema was already ignored.
2016-08-04 16:34:48 -07:00
Nick Alexander
44db8116bf Handle nested maps, sequences in maps, and reverse references. 2016-08-04 14:26:20 -07:00
Nick Alexander
d9a8cb0d6a Don't accept user-provided tx values.
This agrees with Datomic.  DataScript allows tx values, possibly to
allow reconstructing DBs from Datom streams, but appears to handle
user-provided tx values in the transactor inconsistently.
2016-08-04 14:26:20 -07:00
Nick Alexander
38545f6efc Add :tx and :txInstant to TxReport; accept :db/tx in transactor; allow to set :db/txInstant.
The implementation of :db/tx is special and may need to change over
time.  We add it as a special ident, with value the current transaction
entity ID, specified per-transaction.  This works well right now but
introduces some (internal) ordering requirements that may need to be
loosened.
2016-08-04 14:26:20 -07:00
Nick Alexander
f25838a1eb Support :db/fulltext true.
Internally, we use SQLite's FTS4 to maintain a fulltext_values table of
unique "text" values.  Fulltext indexed datoms have value v that is the
rowid into fulltext_values.  We manually maintain the map between rowid
and value in the transactor.

For convenience, we expose two views interpolating the real text values
into the datoms structure.
2016-08-04 14:26:20 -07:00
Nick Alexander
13f33a4915 Unify test pattern around "(... -after tx0)". 2016-08-04 14:26:20 -07:00
Nick Alexander
296c9cb436 Bootstrap DB schema; persist and restore schema from materialized views. 2016-08-04 14:26:20 -07:00
Nick Alexander
6a8739bd2f Accept new schema fragments via :db.part/db :db.install/attribute. 2016-08-04 14:26:20 -07:00
Nick Alexander
9497d69b44 Respect :db/unique constraints; test upserts.
This version includes SQLite-level unique indexes; these should never be
needed.  I've included them as a fail-safe while testing; they'll help
us catch errors in the transaction layer above.
2016-08-04 14:26:20 -07:00
Nick Alexander
80742242e2 Fix cljs 2016-08-04 14:26:20 -07:00
Nick Alexander
7a90c43a5a Map valueTypes to SQLite encodings.
In the future, we might add a layer of indirection, hashing values to
avoid duplicating storage, or sorting URLs, or handling fulltext indexed
values differently, or ...
2016-08-04 14:26:20 -07:00
Nick Alexander
43423b7d0a Validate value types. 2016-08-04 14:26:20 -07:00
Nick Alexander
661e7ed123 Allow to add new :db/ident mappings. 2016-08-04 14:26:20 -07:00
Nick Alexander
baec3815b0 Implement transactions. 2016-08-04 14:26:20 -07:00