Commit graph

106 commits

Author SHA1 Message Date
Richard Newman
1918388ddf Introduce ValueRc as an abstraction over Rc/Arc choice. 2018-04-25 12:22:15 -07:00
Richard Newman
4a42d2ca2c Pre: eliminate some occurrences of Rc, largely through the magic of Into. 2018-04-24 16:46:30 -07:00
Nick Alexander
c8da4be38f (query) Implement tx-log API: (tx-ids ...) and (tx-data ...) functions.
`tx-ids` allows to enumerate transaction IDs efficiently.

`tx-data` allows to extract transaction log data efficiently.

We might eventually allow to filter by impacted attribute sets as well.
2018-04-19 09:58:41 -07:00
Nick Alexander
e532614908 (query) Pre: Model columns that don't have type tags closer to Column. 2018-04-19 09:58:41 -07:00
Richard Newman
a57f7aff99
Add specialized tx-before and tx-after predicates. (#599) r=emily 2018-04-05 10:49:06 -07:00
Richard Newman
994a3e65e2
Tests and fixes for aggregates over different or unknown types. (#588) r=emily 2018-03-15 07:14:06 -07:00
Richard Newman
833ff92436
Simple aggregates. (#584) r=emily
* Pre: use debugcli in VSCode.
* Pre: wrap subqueries in parentheses in output SQL.
* Pre: add ExistingColumn.

This lets us make reference to columns by name, rather than only
pointing to qualified aliases.

* Pre: add Into for &str to TypedValue.
* Pre: add Store.transact.
* Pre: cleanup.
* Parse and algebrize simple aggregates. (#312)
* Follow-up: print aggregate columns more neatly in the CLI.
* Useful ValueTypeSet helpers.
* Allow for entity inequalities.
* Add 'differ', which is a ref-specialized not-equals.
* Add 'unpermute', a function for getting unique, distinct pairs from bindings.
* Review comments.
* Add 'the' pseudo-aggregation operator.

This allows for a corresponding value to be returned when a query
includes one 'min' or 'max' aggregate.
2018-03-12 15:18:50 -07:00
Richard Newman
1817ce7c0b Performance and cleanup. r=emily
* Use fixed-size arrays for bootstrap datoms, not vecs.
* Wide-ranging cleanup.

    This commit:
    - Deletes some dead code.
    - Marks some functions only used by tests as cfg(test).
    - Adds pub(crate) to a bunch of functions.
    - Cleans up a few other nits.
2018-03-06 09:03:00 -08:00
Richard Newman
f42ae35b70 Update cache on write. (#566) r=emily
* Use the cache to make constant queries super fast.
* Fix translate tests to match: we no longer generate SQL for many of them!
* Accumulate additions and removals into the cache.
    * Make attribute cache clone-on-write; store it in Metadata.
    * Allow caching of fulltext attributes, interning strings.
2018-03-06 09:01:20 -08:00
Richard Newman
d46535a7c2
When an attribute is known-fulltext, don't hit AllDatoms. (#576) r=nalexander 2018-03-05 10:09:53 -08:00
Richard Newman
54bd883c65 Follow-up: remove logging and such elsewhere in the codebase. 2018-02-21 11:51:45 -08:00
Richard Newman
e33fe71c47 Rework caching and use it inside the query engine. (#553) r=emily
This puts caching in mentat_db, adds a reverse lookup capability for
unique attributes, and populates bidirectional caches with a single
SQL cursor walk.

Differentiate between begin_read and begin_uncached_read.

Note that we still allow toggling within InProgress, because there might be
transient local state that makes starting a new transaction impossible.
2018-02-21 11:51:45 -08:00
Kit Cambridge
a6341f6fd6 Implement q_prepare with pre-bound variables. r=rnewman 2018-02-07 21:48:05 -08:00
Richard Newman
66e6fef75e Define Store, use TabWriter in the CLI for aligning columnar output. (#540) r=emily
* Define Store, which is a simple container for a SQLite connection and a Conn.
  This is a breaking change.
* Return the FindSpec as part of QueryOutput, not just results.
* Switch to using stderr in appropriate places in CLI.
* Print columns in CLI output.
2018-02-01 09:29:07 -08:00
Richard Newman
37a7c9ea48 Validate attributes installed after open. (#538) r=emily
Make AttributeBuilder optionally helpful, fix tests.
2018-02-01 09:29:04 -08:00
Thom Chiovoloni
98502eb68f Implement type annotations in queries. (#526) r=rnewman 2018-01-29 14:37:53 -08:00
Richard Newman
4acc6d0658 InProgressRead, KnownEntid. r=nalexander,emily
Improve naming of read-only transactions.
    Implement entid_for_type.
    Simplify get_attribute.
    Name ignored var in algebrizer.
    Comment attribute_for_ident.
    Make KnownEntid a core concept.
    Expose lookup_value_for_attribute.
    Implement HasSchema and a new query encapsulation on Conn.
    Pre: export Queryable.
2018-01-23 08:40:18 -08:00
Richard Newman
6797a606b5 Preliminary work for vocabulary management. r=emily,nalexander
Pre: export AttributeBuilder from mentat_db.
Pre: fix module-level comment for tx/src/entities.rs.
Pre: rename some `to_` conversions to `into_`.
Pre: make AttributeBuilder::unique less verbose.
Pre: split out a HasSchema trait to abstract over Schema.
Pre: rename SchemaMap/schema_map to AttributeMap/attribute_map.
Pre: TypedValue/NamespacedKeyword conversions.
Pre: turn Unique and ValueType into TypedValue::Keyword.
Pre: export IntoResult.
Pre: export NamespacedKeyword from mentat_core.
Pre: use intern_set in tx.
Pre: add InternSet::len.
Pre: comment gardening.
Pre: remove inaccurate TODO from TxReport comment.
2018-01-23 08:25:32 -08:00
Thom
9740cafdbd Automatically remove trailing whitespace from text files. (#527) r=rnewman
This was done using the following shell script:

```
find . -type f -not -path "*target*" \
       '(' -name '*.rs' -o -name '*.md' -o -name '*.toml' ')' -print0 | \
    xargs -0 sed -i '' -E 's/[[:space:]]*$//'
```

Which is admittedly imperfect, but manages to hit everything that was a problem in this repo.
2018-01-19 21:21:04 -06:00
Richard Newman
df90c366af
Partial work from simple aggregates work (#497) r=nalexander
* Pre: make FindQuery, FindSpec, and Element non-Clone.
* Pre: make query translator return a Result.
* Pre: make projection return a Result.
* Pre: refactor query parser in preparation for parsing aggregates.
* Pre: rename PredicateFn -> QueryFunction.
* Pre: expose more about bound variables from CC.
* Pre: move ValueTypeSet to core.
2017-11-30 15:02:07 -08:00
Richard Newman
c600152d78
Update some dependencies. (#492) r=etoop
* Update some dependencies.

* Update rusqlite to 0.12.

* Update error-chain to a forked version that implements Sync.

* Fix some compiler warnings.

* Remove unused imports in tests.

* Parse errors no longer naturally print with the expected symbol.
2017-11-21 16:24:08 +00:00
Emily Toop
c15973f269 Support tx places in queries (#485) r=rnewman
* Support tx places in queries
2017-06-28 18:20:16 +01:00
Richard Newman
d1ad3c47f7 Follow-up: clean up imports. 2017-06-16 13:32:23 -07:00
Richard Newman
eaf3e7fc4b Extend inequalities to Instants. (#439) r=fluffyemily,nalexander 2017-06-16 11:57:44 -07:00
Richard Newman
20aa11dcbd Support variable fulltext searches. (#479) r=nalexander 2017-06-15 10:32:46 -07:00
Richard Newman
3f264e9eb2 Implement fulltext. (#477) r=nalexander
* You can't use fulltext search on a non-fulltext attribute.
* Allow for implicit placeholder bindings in fulltext.
2017-06-15 10:28:11 -07:00
Richard Newman
565a0e9ff9 Implement MATCHES throughout SQL machinery. 2017-06-15 10:28:10 -07:00
Richard Newman
17c59bbff6 Apply newly bound values to existing columns.
This commit lifts some logic out of the scalar ground handler to apply
elsewhere.

When a new value binding is encountered for a variable to which column
bindings have already been established, we do two things:

- We apply a new constraint to the primary column. This ensures that the
  behavior for ground-first and ground-second is equivalent.
- We eliminate any existing column type extraction: it won't be
  necessary now that a constant value and constant type are known.
2017-06-15 10:28:09 -07:00
Richard Newman
f7a3fd5b17 Refactor arg conversion and ground into separate files. 2017-06-15 10:28:07 -07:00
Richard Newman
54bdd382fb Add a test that late inputs aren't allowed in ground. 2017-06-15 10:28:05 -07:00
Richard Newman
03c0930285 Pre: implement IntoIterator for ValueTypeSet. 2017-06-15 10:27:51 -07:00
Richard Newman
e1e549440f Expand type code when applying ground. (#475) 2017-06-09 20:18:53 -07:00
Nick Alexander
79fa0994b3 Part 3: Handle ground. (#469) r=nalexander,rnewman
This version removes nalexander's lovely matrix code. It turned out
that scalar and tuple bindings are sufficiently different from coll
and rel -- they can directly apply as values in the query -- that
there was no point in jumping through hoops to turn those single
values into a matrix.

Furthermore, I've standardized us on a Vec<TypedValue>
representation for rectangular matrices, which should be much
more efficient, but would have required rewriting that code.

Finally, coll and rel are sufficiently different from each other
-- coll doesn't require processing nested collections -- that
my attempts to share code between them fell somewhat flat. I had
lots of nice ideas about zipping together cycles and such, but
ultimately I ended up with relatively straightforward, if a bit
repetitive, code.

The next commit will demonstrate the value of this work -- tests
that exercised scalar and tuple grounding now collapse down to
the simplest possible SQL.
2017-06-09 20:18:31 -07:00
Richard Newman
c6e933c396 Pre: make rule_vars return unique vars. 2017-06-09 20:16:39 -07:00
Richard Newman
d30ad428e8 Pre: take a dependency on maplit to allow BTreeSet literals. 2017-06-09 20:16:39 -07:00
Richard Newman
4a886aae17 Pre: derive Debug. 2017-06-09 20:16:38 -07:00
Richard Newman
9ac2b8c680 Pre: add ConjoiningClauses::known_type_set. 2017-06-09 20:16:38 -07:00
Richard Newman
899e5d0971 Pre: add ConjoiningClauses::bind_value. 2017-06-09 20:16:38 -07:00
Nick Alexander
13e27c83e2 Pre: Modify predicate implementation in preparation for functions that bind. 2017-06-09 20:16:38 -07:00
Nick Alexander
4d2eb7222e Pre: Generalize NonNumericArgument to InvalidArgument. 2017-06-09 20:16:37 -07:00
Nick Alexander
002c918c96 Pre: Move PushComputed up module hierarchy; make it public. 2017-06-09 20:16:37 -07:00
Nick Alexander
9fe31d443d Pre: Accept EDN vectors in FnArg arguments.
Datomic accepts mostly-arbitrary EDN, and it is actually used: for
example, the following are all valid, and all mean different things:
* `(ground 1 ?x)`
* `(ground [1 2 3] [?x ?y ?z])`
* `(ground [[1 2 3] [4 5 6]] [[?x ?y ?z]])`

We could probably introduce new syntax that expresses these patterns
while avoiding collection arguments, but I don't see one right now.
I've elected to support only vectors for simplicity; I'm hoping to
avoid parsing edn::Value in the query-algebrizer.
2017-06-09 20:16:36 -07:00
Nick Alexander
08534a1a3a Pre: Handle SrcVar. 2017-06-09 20:16:36 -07:00
Richard Newman
a10c6fc67a Pre: make ValueTypeSet Copy, as it only newtypes EnumSet, which is Copy. 2017-06-09 20:16:36 -07:00
Richard Newman
dbbbd220f9 Pre: add helpers to ValueTypeSet. 2017-06-09 20:16:35 -07:00
Richard Newman
daca8def57 UUIDs and instants. Fixes #44, #45, #426, #427. (#438) r=nalexander
* Pre: unused import in translate.rs.

* Part 2: take a dependency on rusqlite for query arguments.

* Part 1: flatten V2 schema into V1. Add UUID and URI.

Bump expected ident and bootstrap datom count in tests.

* Part 5: parse edn::Value::Uuid.

* Part 3: extend ValueType and TypedValue to include Uuid.

* Part 4: add Uuid to query arguments.

* Part 6: extend db to support Uuid.

* Part 8: add a tx-parser test for #f NaN and #uuid.

* Part 7: parse and algebrize UUIDs in queries.

* Part 1: parse #inst in EDN and throughout query engine.

* Part 3: handle instants in db.

* Part 2: instants never matches integers in queries.

* Part 4: use DateTime for tx_instants.

* Add a test for adding and querying UUIDs and instants.

* Review comments.
2017-04-28 20:11:55 -07:00
Emily Toop
bd389d2f0d Parse and Algebrize not & not-join. (#302) (Closes #303, #389, #422 ) r=rnewman
* Part 1 - Parse `not` and `not-join`

* Part 2 - Validate `not` and `not-join` pre-algebrization

* Address review comments rnewman.
* Remove `WhereNotClause` and populate `NotJoin` with `WhereClause`.
* Fix validation for `not` and `not-join`, removing tests that were invalid.
* Address rustification comments.

* Rebase against `rust` branch.

* Part 3 - Add required types for NotJoin.
* Implement `PartialEq` for
`ConjoiningClauses` so `ComputedTable` can be included inside `ColumnConstraint::NotExists`

* Part 4 - Implement `apply_not_join`

* Part 5 - Call `apply_not_join` from inside `apply_clause`

* Part 6 - Translate `not-join` into `NOT EXISTS` SQL

* Address review comments.

* Rename `projected` to `unified` to better describe the fact that we are not projecting any variables.
* Check for presence of each unified var in either `column_bindings` or `input_bindings` and bail if not there.
* Copy over `input_bindings` for each var in `unified`.
* Only copy over the first `column_binding` for each variable in `unified` rather than the whole list.
* Update tests.

* Address review comments.

* Make output from Debug for NotExists more useful

* Clear up misunderstanding. Any single failing clause in the not will cause the entire not to be considered empty

* Address review comments.

* Remove Limit requirement from cc_to_exists.
* Use Entry.or_insert instead of matching on the entry to add to column_bindings.
* Move addition of value_bindings to before apply_clauses on template.
* Tidy up tests with some variable reuse.
* Addressed nits,

* Address review comments.

* Move addition of column_bindings to above apply_clause.
* Update tests.

* Add test to ensure that unbound vars fail

* Improve test for unbound variable to check for correct variable and error

* address nits
2017-04-28 10:44:11 +01:00
Richard Newman
19fc7cddf1 [query] Widen known_types correctly in complex or. (#424) r=nalexander
* Part 1: define ValueTypeSet.

We're going to use this instead of `HashSet<ValueType>` so that we can clearly express
the empty set and the set of all types, and also to encapsulate a switch to `EnumSet`."

* Part 2: use ValueTypeSet.

* Part 3: fix type expansion.

* Part 4: add a test for type extraction from nested `or`.

* Review comments.

* Review comments: simplify ValueTypeSet.
2017-04-24 14:15:26 -07:00
Richard Newman
bc63744aba Add :limit to queries (#420) r=nalexander
* Pre: put query parts in alphabetical order.
* Pre: rename 'input' to 'query' in translate tests.
* Part 1: parse :limit.
* Part 2: validate and escape variable parameters in SQL.
* Part 3: algebrize and translate limits.
2017-04-19 16:16:19 -07:00
Richard Newman
bffefe7e6b Review comments for #418. 2017-04-18 13:50:58 -07:00