mirror of https://github.com/AMT-Cheif/drift.git
Delete mysql extra
This commit is contained in:
Simon Binder
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29bb6a73c8
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# Files and directories created by pub
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.dart_tool/
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.packages
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# Remove the following pattern if you wish to check in your lock file
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pubspec.lock
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# Conventional directory for build outputs
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build/
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# Directory created by dartdoc
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doc/api/
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Experimental support for using Moor with an MySQL server.
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## Using this
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For general notes on using moor, see [this guide](https://moor.simonbinder.eu/getting-started/).
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To use the MySQL backend, also add this to your pubspec (you don't need to depend on
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`moor_flutter`).
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```yaml
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dependencies:
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moor: "$latest version"
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moor_mysql:
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git:
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url: https://github.com/simolus3/moor.git
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path: extras/mysql
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```
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Then, instead of using a `FlutterQueryExecutor`, use a `MySqlBackend` with the
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right [`ConnectionSettings`](https://pub.dev/documentation/sqljocky5/latest/connection_settings/ConnectionSettings-class.html).
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You'll need to import `package:moor_mysql/moor_mysql.dart`.
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## Limitations
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We're currently experimenting with other database engines - Moor was mainly designed for
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sqlite and supporting advanced features of MySQL is not a priority right now.
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- No migrations - you'll need to create your tables manually
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- Some statements don't work
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- Compiled custom queries don't work - we can only parse sqlite. Of course, runtime custom
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queries with `customSelect` and `customUpdate` will work as expected.
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version: "3.7"
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services:
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database:
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image: mariadb
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environment:
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MYSQL_ROOT_PASSWORD: password
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MYSQL_DATABASE: example
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ports:
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- "3306:3306"
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phpmyadmin:
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depends_on:
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- database
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image: phpmyadmin/phpmyadmin
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ports:
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- "8080:80"
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environment:
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PMA_HOST: database
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PMA_USER: root
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PMA_PASSWORD: password
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PMA_PORT: 3306
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/// Experimental support to run moor on a mysql backend.
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library moor_mysql;
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import 'package:moor/backends.dart';
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import 'package:moor/moor.dart';
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import 'package:sqljocky5/connection/connection.dart';
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import 'package:sqljocky5/sqljocky.dart';
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export 'package:sqljocky5/sqljocky.dart' show ConnectionSettings;
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class MySqlBackend extends DelegatedDatabase {
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MySqlBackend(ConnectionSettings settings)
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: super(_MySqlDelegate(settings), logStatements: true);
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}
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mixin _MySqlExecutor on QueryDelegate {
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Querier get _querier;
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@override
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Future<void> runCustom(String statement, List args) async {
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await _querier.prepared(statement, args);
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}
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@override
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Future<int> runInsert(String statement, List args) async {
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final result = await _querier.prepared(statement, args);
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return result.insertId;
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}
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@override
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Future<QueryResult> runSelect(String statement, List args) async {
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final result = await _querier.prepared(statement, args);
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final columns = [for (var field in result.fields) field.name];
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final rows = result.toList();
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return QueryResult(columns, rows);
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}
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@override
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Future<int> runUpdate(String statement, List args) async {
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final result = await _querier.prepared(statement, args);
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return result.affectedRows;
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}
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}
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class _MySqlDelegate extends DatabaseDelegate with _MySqlExecutor {
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final ConnectionSettings _settings;
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MySqlConnection _connection;
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_MySqlDelegate(this._settings);
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@override
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bool get isOpen => _connection != null;
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@override
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Querier get _querier => _connection;
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@override
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final DbVersionDelegate versionDelegate = const NoVersionDelegate();
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@override
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TransactionDelegate get transactionDelegate => _TransactionOpener(this);
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@override
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SqlDialect get dialect => SqlDialect.mysql;
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@override
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Future<void> open(_) async {
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_connection = await MySqlConnection.connect(_settings);
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}
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@override
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Future<void> close() async {
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await _connection.close();
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}
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}
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class _TransactionOpener extends SupportedTransactionDelegate {
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final _MySqlDelegate _delegate;
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_TransactionOpener(this._delegate);
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@override
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void startTransaction(Future Function(QueryDelegate) run) {
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_delegate._connection.transaction((transaction) async {
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final executor = _TransactionExecutor(transaction);
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await run(executor);
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});
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}
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}
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class _TransactionExecutor extends QueryDelegate with _MySqlExecutor {
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@override
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final Querier _querier;
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_TransactionExecutor(this._querier);
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}
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@ -1,18 +0,0 @@
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name: moor_mysql
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description: MySQL support for moor
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version: 1.0.0
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author: Simon Binder <oss@simonbinder.eu>
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environment:
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sdk: '>=2.4.0 <3.0.0'
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dependencies:
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moor: ^2.0.0
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sqljocky5: ^2.2.0
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dev_dependencies:
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test: ^1.6.0
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dependency_overrides:
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moor:
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path: ../../moor
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