Commit graph

611 commits

Author SHA1 Message Date
Thom Chiovoloni
f3dc922571 Implement type requirements/predicates for queries. Fixes #474 2018-01-24 16:12:45 -05:00
Richard Newman
ef9f2d9c51 Don't allow violation of cardinality-one restrictions within a single tx. (#531) r=nalexander 2018-01-23 15:11:38 -08:00
Richard Newman
6ed5413cd4 Implement simple vocabulary management. (#504) r=emily,nalexander
Bump version to 0.5.1 to reflect this change.
2018-01-23 08:52:15 -08:00
Richard Newman
812f10b3e4 Add an EntityBuilder abstraction. r=nalexander,emily
This includes two other changes:

* Split transact to expose an interface for TermWithTempIds.
* Return TxReport from each InProgress operation, not from commit.
2018-01-23 08:52:09 -08:00
Richard Newman
3d28949add Describe the default core schema, v1 (:db.schema/core). r=nalexander 2018-01-23 08:51:58 -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
Richard Newman
224570fb45 Switch InProgress to be mutated in place. r=nalexander,emily
This is a breaking change, and involves a very small additional cost
in managing the partition map, but it makes it much more feasible to
implement traits on InProgress: now they don't need to chain back a
new InProgress each time.

Bump version to 0.5 to reflect the change in InProgress.
2018-01-23 08:14:13 -08:00
Fernando Jiménez Moreno
50a9e0c21f Add link to CQRS resources. (#534) r=rnewman
Not everyone knows what CQRS is (I had to Google it) :)
2018-01-23 09:49:49 -06:00
Richard Newman
ab5b67ecf7
Tweak README to address some feedback from zbraniecki. 2018-01-22 17:35:36 +00:00
Emily Toop
8cc7f0b72e
Expose Uuid from the top level crate (#529) 2018-01-22 16:29:25 +00:00
Thom
1fcc3d7e1b
Add support for Ctrl-C aborting the current command on the CLI (#528) r=rnewman 2018-01-21 09:45:40 -05:00
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
Thom
023fd9b70b
Add a command to the CLI that displays the SQL and query plan for a query. Fixes #428. (#523) r=rnewman 2018-01-19 19:44:39 -05:00
Richard Newman
ebb77d59bc
Ensure that DateTime values are truncated to microsecond precision. (#522) r=emily 2018-01-18 09:06:23 -06:00
Thom
579829d091 CLI quality-of-life fixes. (#521) r=rnewman
* CLI: Update linefeed library to latest version
* CLI: Don't store incomplete commands in history
* CLI: add curly braces to word separators
* Review comment: clean up CLI add_history.

Signed-off-by: Thom Chiovoloni <tchiovoloni@mozilla.com>
2018-01-17 22:33:22 -06:00
Richard Newman
95e95d735e
Correct an assert relating Datalog projection and SQL column counts. (#519) r=tcsc
* Correct an assert relating Datalog projection and SQL column counts. (#517)
* Fix a comment that shouldn't be a doc comment.
2018-01-17 16:36:15 -06:00
Grisha Kruglov
1589104841
Force SQLite temp files to be stored in memory (#505) r=rnewman (#506)
* Force SQLite temp files to be stored in memory (#505) r=rnewman
2017-12-20 01:52:09 -05:00
Grisha Kruglov
c61bc79b99 Sync metadata schema and SyncMetadataClient. (#502) r=rnewman 2017-12-13 14:19:05 -06:00
Richard Newman
e8ec59e464
Implement a simple direct lookup API. Fixes #111 (#503) r=grisha
* Add some helpers and refactor how queries are run (once).
* Implement lookup_value_for_attribute.
* Add a multi-value test for lookup_value_for_attribute.
2017-12-11 11:08:10 -08:00
Richard Newman
b7fb44a5a6 Add a comment to InProgress. 2017-12-07 12:19:59 -08:00
Richard Newman
a3b8fd3022 Add results type unwrapping helpers. 2017-12-06 14:47:29 -08:00
Richard Newman
75bcb76dd5 Be slightly more specific about mentat_core exporting Uuid. 2017-12-06 12:42:59 -08:00
Richard Newman
1f0c4e3107 Add common From coercions for TypedValue. 2017-12-06 12:29:11 -08:00
Emily Toop
2fc4cb5a2d Clear the CLI buffer when an incorrect command is added. (#500) r=rnewman
* Fix issue whereby when an incorrect command was entered, the buffer wasn't cleared and the next command was appended on the end of the incorrect one.

* Cleanup.
2017-12-05 14:10:10 -08:00
Richard Newman
95b9c7f7f5
Atomic multi-tx (#489). r=emily,nalexander
* Pre: rename begin_transaction to begin_tx_application.

* Take an EXCLUSIVE transaction when bootstrapping, and an IMMEDIATE transaction when writing.

This avoids the remote possibility of another write sneaking in the door
while we're preparing to write, avoids us needing to upgrade locks, etc.

  After a BEGIN IMMEDIATE, no other database connection will be able to write
  to the database or do a BEGIN IMMEDIATE or BEGIN EXCLUSIVE. Other processes
  can continue to read from the database, however.

  An exclusive transaction causes EXCLUSIVE locks to be acquired on all
  databases. After a BEGIN EXCLUSIVE, no other database connection except for
  read_uncommitted connections will be able to read the database and no other
  connection without exception will be able to write the database until the
  transaction is complete.

* Hacky implementation of atomic multi-tx.

* Hold the last report, returning the InProgress from each operation.

* Rewrite transact in terms of InProgress.

* Test rollback.

* Remove unused imports.

* Don't use Rc for transaction reports.

* Pre: break out USER0 as a part boundary constant.

* Export TX0 and USER0 from mentat_db. This is for testing.

* Review comments: commenting.

* Test tempid allocation and rollback.
2017-12-05 07:58:24 -08:00
Richard Newman
1b72f5bbb6
Example databases (#499). r=emily
* Update fixtures to match the current storage schema.

The existing files were a little misleading. This commit moves them into an 'old'
directory, and creates a new 'v1empty.db'.

* Add empty example Toodle database.

* Rename :item/labels to :item/label in Toodle schema.

* Define 'cargo cli' as an alias to run the Mentat CLI.
2017-12-05 07:42:19 -08:00
Richard Newman
03fee722e9 Add etoop as an author. 2017-12-04 13:10:05 -08:00
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
Emily Toop
55588209c2
CLI (#493)
* Create mentat command line.
* Create tools directory containing new crate for mentat_cli.
* Add simple cli with mentat prompt.

* Remove rustc-serialize dependency

* Open DB inside CLI (#452) (#463)

* Open named database OR default to in memory database if no name provided

Rearrange workspace to allow import of mentat crate in cli crate

Create store object inside repl when started for connecting to mentat

Use provided DB name to open connection in store

Accept DB name as command line arg.

Open on CLI start

Implement '.open' command to open desired DB from inside CLI

* Implement Close command to close current DB.
* Closes existing open db and opens new in memory db

* Review comment: Use `combine` to parse arguments.

Move over to using Result rather than enums with err

* Accept and parse EDN Query and Transact commands (#453) (#465)

* Parse query and transact commands

* Implement is_complete for transactions and queries

* Improve query parser. Am still not happy with it though.

There must be some way that I can retain the eof() after the `then` that means I don't have to move the skip on spaces and eof

Make in process command storing clearer.

Add comments around in process commands.
Add alternative commands for transact/t and query/q

* Address review comments r=nalexander.

* Bump rust version number.
* Use `bail` when throwing errors.
* Improve edn parser.
* Remove references to unused `more` flag.
* Improve naming of query and transact commands.

* Send queries and transactions to mentat and output the results (#466)

* Send queries and transactions to mentat and output the results

move outputting query and transaction results out of store and into repl

* Add query and transact commands to help

* Execute queries and transacts passed in at startup

* Address review comments =nalexander.

* Bump rust version number.
* Use `bail` when throwing errors.
* Improve edn parser.
* Remove references to unused `more` flag.
* Improve naming of query and transact commands.

* Execute command line args in order

* Addressing rebase issues

* Exit CLI (#457) (#484) r-rnewman

* Implement exit command for cli tool

* Address review comments r=rnewman

* Include exit commands in help

* Show schema of current DB (#487)

* Fixing rebase issues

* addressing nit

* Match updated dependencies on CLI crate and remove unused import
2017-11-21 16:56:16 +00:00
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
ea0e9d4c7b Allow instants to pass through schema validation. (#481) r=fluffyemily
* Allow instants to pass through schema validation.
* Expand cases in SchemaTypeChecking to catch enum bugs.
2017-06-16 09:15:29 -07:00
Richard Newman
aa5f569df5 There are one million microseconds in a second, not one hundred thousand. (#480) r=fluffyemily 2017-06-16 08:00:14 -07:00
Richard Newman
20aa11dcbd Support variable fulltext searches. (#479) r=nalexander 2017-06-15 10:32:46 -07:00
Richard Newman
dd39f6df5b Implement fulltext. (#477) r=nalexander 2017-06-15 10:32:40 -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
c2ec1a6bdf Pre: move Either to mentat_core::util. 2017-06-15 10:28:02 -07:00
Richard Newman
03c0930285 Pre: implement IntoIterator for ValueTypeSet. 2017-06-15 10:27:51 -07:00
Richard Newman
5d5e85bcba Pre: ensure that constant floats end up as floats in SQL, never integers. 2017-06-15 10:27:16 -07:00
Richard Newman
8ec24f01f6 Handle ground. (#469) r=nalexander 2017-06-09 20:20:16 -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
Nick Alexander
d04d22a6a6 Part 2: refactor projector to be reusable from translator.
This allows the translator to also use bound values in nested queries.
2017-06-09 20:16:39 -07:00