angel_orm 2.1.0-beta.3

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angel_orm #

Runtime support for Angel's ORM. Includes a clean, database-agnostic query builder and relationship/join support.

For documentation about the ORM, head to the main project repo:

2.1.0-beta.3 #

  • Remove parentheses from AS when renaming raw expressions.

2.1.0-beta.2 #

  • Add expressions to Query, to support custom SQL expressions that are read as normal fields.

2.1.0-beta.1 #

  • Calls to leftJoin, etc. alias all fields in a child query, to prevent ambiguous column errors.

2.1.0-beta #

  • Split the formerly 600+ line src/query.dart up into separate files.
  • BREAKING: Add a required QueryExecutor argument to transaction callbacks.
  • Make JoinBuilder take to as a String Function(). This will allow ORM queries to reference their joined subqueries.
  • Removed deprecated Join, toSql, sanitizeExpression, isAscii.
  • Always put ORDER BY before LIMIT.
  • and, or, not in QueryWhere include parentheses.
  • Add joinType to Relationship class.

2.0.2 #

  • Place LIMIT and OFFSET after ORDER BY.

2.0.1 #

  • Apply package:pedantic fixes.
  • @PrimaryKey() no longer defaults to serial, allowing its type to be inferenced.

2.0.0 #

  • Add isNull, isNotNull getters to builders.

2.0.0-dev.24 #

  • Fix a bug that caused syntax errors on ORDER BY.
  • Add pattern to like on string builder. sanitize is optional.
  • Add RawSql.

2.0.0-dev.23 #

  • Add @ManyToMany annotation, which builds many-to-many relations.

2.0.0-dev.22 #

  • compileInsert will explicitly never emit a key not belonging to the associated query.

2.0.0-dev.21 #

  • Add tableName to query

2.0.0-dev.20 #

  • Join updates.

2.0.0-dev.19 #

  • Implement cast-based double support.
  • Finish ListSqlExpressionBuilder.

2.0.0-dev.18 #

  • Add ListSqlExpressionBuilder (still in development).

2.0.0-dev.17 #

  • Add EnumSqlExpressionBuilder.

2.0.0-dev.16 #

  • Add MapSqlExpressionBuilder for JSON/JSONB support.

2.0.0-dev.15 #

  • Remove Column.defaultValue.
  • Deprecate toSql and sanitizeExpression.
  • Refactor builders so that strings are passed through

2.0.0-dev.14 #

  • Remove obsolete @belongsToMany.

2.0.0-dev.13 #

  • Push for consistency with orm_gen @ 2.0.0-dev.

2.0.0-dev.12 #

  • Always apply toSql escapes.

2.0.0-dev.11 #

  • Remove limit(1) except on getOne

2.0.0-dev.10 #

  • Add withFields to compile()

2.0.0-dev.9 #

  • Permanent preamble fix

2.0.0-dev.8 #

  • Escapes

2.0.0-dev.7 #

  • Update toSql
  • Add isTrue and isFalse

2.0.0-dev.6 #

  • Add delete, insert and update methods to Query.

2.0.0-dev.4 #

  • Add more querying methods.
  • Add preamble to Query.compile.

2.0.0-dev.3 #

  • Brought back old-style query builder.
  • Strong-mode updates, revised Join.

2.0.0-dev.2 #

  • Renamed ORM to Orm.
  • Orm now requires a database type.

2.0.0-dev.1 #

  • Restored all old PostgreSQL-specific annotations. Rather than a smart runtime, having a codegen capable of building ORM's for multiple databases can potentially provide a very fast ORM for everyone.

2.0.0-dev #

  • Removed PostgreSQL-specific functionality, so that the ORM can ultimately target all services.
  • Created a better Join model.
  • Created a far better Query model.
  • Removed lib/server.dart

1.0.0-alpha+10 #

  • Split into angel_orm.dart and server.dart. Prevents DDC failures.

1.0.0-alpha+7 #

  • Added a @belongsToMany annotation class.
  • Resolved #20. The PostgreSQLConnectionPool keeps track of which connections have been opened now.

1.0.0-alpha+6 #

  • DateTimeSqlExpressionBuilder will no longer automatically insert quotation marks around names.

1.0.0-alpha+5 #

  • Corrected a typo that was causing the aforementioned test failures. == becomes =.

1.0.0-alpha+4 #

  • Added a null-check in lib/src/query.dart#L24 to (hopefully) prevent it from crashing on Travis.

1.0.0-alpha+3 #

  • Added isIn, isNotIn, isBetween, isNotBetween to SqlExpressionBuilder and its subclasses.
  • Added a dependency on package:meta.


import 'dart:async';

import 'package:angel_model/angel_model.dart';
import 'package:angel_orm/angel_orm.dart';
import 'package:angel_orm/src/query.dart';
import 'package:angel_serialize/angel_serialize.dart';
part 'main.g.dart';
part 'main.serializer.g.dart';

main() async {
  var query = EmployeeQuery()
    ..orWhere((w) => w.salary.greaterThanOrEqualTo(75000))
    ..join('companies', 'company_id', 'id');

  var richPerson = await query.getOne(_FakeExecutor());

class _FakeExecutor extends QueryExecutor {
  const _FakeExecutor();

  Future<List<List>> query(
      String tableName, String query, Map<String, dynamic> substitutionValues,
      [returningFields]) async {
    var now =;
        '_FakeExecutor received query: $query and values: $substitutionValues');
    return [
      [1, 'Rich', 'Person', 100000.0, now, now]

  Future<T> transaction<T>(FutureOr<T> Function(QueryExecutor) f) {
    throw UnsupportedError('Transactions are not supported.');

abstract class _Employee extends Model {
  String get firstName;

  String get lastName;

  double get salary;

class EmployeeQuery extends Query<Employee, EmployeeQueryWhere> {
  final QueryValues values = MapQueryValues();

  EmployeeQueryWhere _where;

  EmployeeQuery() {
    _where = EmployeeQueryWhere(this);

  EmployeeQueryWhere get where => _where;

  String get tableName => 'employees';

  List<String> get fields =>
      ['id', 'first_name', 'last_name', 'salary', 'created_at', 'updated_at'];

  EmployeeQueryWhere newWhereClause() => EmployeeQueryWhere(this);

  Employee deserialize(List row) {
    return Employee(
        id: row[0].toString(),
        firstName: row[1] as String,
        lastName: row[2] as String,
        salary: row[3] as double,
        createdAt: row[4] as DateTime,
        updatedAt: row[5] as DateTime);

class EmployeeQueryWhere extends QueryWhere {
  EmployeeQueryWhere(EmployeeQuery query)
      : id = NumericSqlExpressionBuilder(query, 'id'),
        firstName = StringSqlExpressionBuilder(query, 'first_name'),
        lastName = StringSqlExpressionBuilder(query, 'last_name'),
        salary = NumericSqlExpressionBuilder(query, 'salary'),
        createdAt = DateTimeSqlExpressionBuilder(query, 'created_at'),
        updatedAt = DateTimeSqlExpressionBuilder(query, 'updated_at');

  Iterable<SqlExpressionBuilder> get expressionBuilders {
    return [id, firstName, lastName, salary, createdAt, updatedAt];

  final NumericSqlExpressionBuilder<int> id;

  final StringSqlExpressionBuilder firstName;

  final StringSqlExpressionBuilder lastName;

  final NumericSqlExpressionBuilder<double> salary;

  final DateTimeSqlExpressionBuilder createdAt;

  final DateTimeSqlExpressionBuilder updatedAt;

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  angel_orm: ^2.1.0-beta.3

2. Install it

You can install packages from the command line:

with pub:

$ pub get

with Flutter:

$ flutter pub get

Alternatively, your editor might support pub get or flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:angel_orm/angel_orm.dart';
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Learn more about scoring.

We analyzed this package on Jun 12, 2020, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.8.4
  • pana: 0.13.9+1

Maintenance issues and suggestions

Support latest dependencies. (-10 points)

The version constraint in pubspec.yaml does not support the latest published versions for 1 dependency (intl).

Package is pre-release. (-5 points)

Pre-release versions should be used with caution; their API can change in breaking ways.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0 <3.0.0
charcode ^1.0.0 1.1.3
intl ^0.15.7 0.15.8 0.16.1
meta ^1.0.0 1.1.8
string_scanner ^1.0.0 1.0.5
Transitive dependencies
collection 1.14.12
path 1.7.0
source_span 1.7.0
term_glyph 1.1.0
Dev dependencies
angel_model ^1.0.0
angel_serialize ^2.0.0
angel_serialize_generator ^2.0.0
build_runner ^1.0.0
pedantic ^1.0.0
test ^1.0.0