112 lines
3 KiB
Dart
112 lines
3 KiB
Dart
import 'dart:async';
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import 'package:angel_model/angel_model.dart';
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import 'package:angel_orm/angel_orm.dart';
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import 'package:angel_orm/src/query.dart';
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import 'package:angel_serialize/angel_serialize.dart';
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part 'main.g.dart';
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part 'main.serializer.g.dart';
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main() async {
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var query = new EmployeeQuery()
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..where.firstName.equals('Rich')
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..where.lastName.equals('Person')
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..orWhere((w) => w.salary.greaterThanOrEqualTo(75000))
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..join('companies', 'company_id', 'id');
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var richPerson = await query.getOne(new _FakeExecutor());
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print(richPerson.toJson());
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}
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class _FakeExecutor extends QueryExecutor {
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const _FakeExecutor();
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@override
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Future<List<List>> query(
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String tableName, String query, Map<String, dynamic> substitutionValues,
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[returningFields]) async {
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var now = new DateTime.now();
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print(
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'_FakeExecutor received query: $query and values: $substitutionValues');
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return [
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[1, 'Rich', 'Person', 100000.0, now, now]
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];
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}
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@override
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Future<T> transaction<T>(FutureOr<T> Function() f) {
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throw new UnsupportedError('Transactions are not supported.');
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}
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}
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@orm
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@serializable
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abstract class _Employee extends Model {
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String get firstName;
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String get lastName;
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double get salary;
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}
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class EmployeeQuery extends Query<Employee, EmployeeQueryWhere> {
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@override
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final QueryValues values = new MapQueryValues();
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EmployeeQueryWhere _where;
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EmployeeQuery() {
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_where = new EmployeeQueryWhere(this);
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}
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@override
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EmployeeQueryWhere get where => _where;
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@override
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String get tableName => 'employees';
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@override
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List<String> get fields =>
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['id', 'first_name', 'last_name', 'salary', 'created_at', 'updated_at'];
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@override
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EmployeeQueryWhere newWhereClause() => new EmployeeQueryWhere(this);
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@override
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Employee deserialize(List row) {
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return new Employee(
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id: row[0].toString(),
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firstName: row[1] as String,
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lastName: row[2] as String,
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salary: row[3] as double,
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createdAt: row[4] as DateTime,
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updatedAt: row[5] as DateTime);
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}
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}
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class EmployeeQueryWhere extends QueryWhere {
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EmployeeQueryWhere(EmployeeQuery query)
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: id = new NumericSqlExpressionBuilder(query, 'id'),
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firstName = new StringSqlExpressionBuilder(query, 'first_name'),
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lastName = new StringSqlExpressionBuilder(query, 'last_name'),
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salary = new NumericSqlExpressionBuilder(query, 'salary'),
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createdAt = new DateTimeSqlExpressionBuilder(query, 'created_at'),
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updatedAt = new DateTimeSqlExpressionBuilder(query, 'updated_at');
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@override
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Iterable<SqlExpressionBuilder> get expressionBuilders {
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return [id, firstName, lastName, salary, createdAt, updatedAt];
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}
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final NumericSqlExpressionBuilder<int> id;
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final StringSqlExpressionBuilder firstName;
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final StringSqlExpressionBuilder lastName;
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final NumericSqlExpressionBuilder<double> salary;
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final DateTimeSqlExpressionBuilder createdAt;
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final DateTimeSqlExpressionBuilder updatedAt;
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}
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