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mentat/db
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Nick Alexander 81af295948 Start installing SQL schema. (#171) r=rnewman 
* Start installing the SQLite store and bootstrapping the datom store.

* Review comment: Decomplect V2_IDENTS.

* Review comment: Decomplect V2_PARTS.

* Review comment: Pre: Expose Clojure's merge on Value instances.

* Review comment: Decomplect V2_SYMBOLIC_SCHEMA.

* Review comment: Decomplect V1_STATEMENTS.

* Review comment: Prefer ? to try!.

* Review comment: Fix typos; format; add TODOs.

* Review comment: Assert that Mentat `Schema` is valid upon creation.

* Review comment: Improve conversion to and from SQL values.

This patch factors the fundamental SQL conversion maps
between (rusqlite::Value, value_type_tag) and (edn::Value, ValueType)
through a new Mentat TypedValue.  (A future patch might rename this
fundamental type mentat::Value.)

To make certain conversion functions infallible, I removed
placeholders for :db.type/{instant,uuid,uri}.  (We could panic
instead, but there's no need to do that right now.)

* Review comment: Always uses bundled SQLite in rusqlite.

This avoids (runtime) failures in Travis CI due to old SQLite
versions.  See 432966ac77.

* Review comment: Move semantics in `from_sql_value_pair`.

* Review comment: DB_EXCISE_BEFORE_T instead of ...BEFORET (no underscore).

* Review comment: Move overview notes to the Wiki.
2017-01-25 16:13:56 -08:00
..
src Start installing SQL schema. (#171) r=rnewman 2017-01-25 16:13:56 -08:00
Cargo.toml Start installing SQL schema. (#171) r=rnewman 2017-01-25 16:13:56 -08:00
README.md Start installing SQL schema. (#171) r=rnewman 2017-01-25 16:13:56 -08:00

README.md

This sub-crate implements the SQLite database layer: installing, managing, and migrating forward the SQL schema underlying the datom store.