cdc1bc1d32
Root cause: get-bidirectional-properties was recomputing bidirectional-property-attr? for every [e a] match, repeatedly calling d/entity for the same property attr keyword. That made cost scale with datom count, not unique properties. Fix: Added per-call memoization for property-attr bidirectional checks using a local volatile! cache, so each attr is resolved once per invocation.
Description
This library provides an API to the frontend(datascript) and backend(SQLite) databases from the Logseq app and the CLI. This library defines the core schema and fns for DB graphs. There are a few namespaces that also support file graphs for the graph-parser. This library is compatible with ClojureScript and with nbb-logseq to respectively provide frontend and commandline functionality.
API
This library is under the parent namespace logseq.db. It provides the following namespaces:
logseq.db- main public ns. Most often used by frontendlogseq.db.frontend.*- frontend namespaces for DB graphslogseq.db.sqlite.*- backend/sqlite namespaces for DB graphslogseq.db.common.*- frontend and backend namespaces for DB graphs
The following namespaces are used with file graphs via the graph-parser: logseq.db.common.order, logseq.db.frontend.entity-util and logseq.db.common.entity-plus.
Usage
See the frontend for example usage.
Dev
This follows the practices that the Logseq frontend follows. Most of the same linters are used, with configurations that are specific to this library. See this library's CI file for linting examples.
Setup
To run linters and tests, you'll want to install yarn dependencies once:
yarn install
This step is not needed if you're just running the application.
Testing
Testing is done with nbb-logseq and nbb-test-runner. Some basic usage:
# Run all tests
$ yarn test
# List available options
$ yarn test -H
# Run tests with :focus metadata flag
$ yarn test -i focus
Datalog linting
Datalog rules for the client are linted through a script that also uses the datalog-parser. To run this linter:
bb lint:rules
Managing dependencies
The package.json dependencies are just for testing and should be updated if there is new behavior to test.
The deps.edn dependencies are used by both ClojureScript and nbb-logseq. Their versions should be backwards compatible with each other with priority given to the frontend. No new dependency should be introduced to this library without an understanding of the tradeoffs of adding this to nbb-logseq.