Resource class

Injects a field or setter with the bean of a given name: the JSR-250 annotation jakarta.annotation.Resource.

Where @Autowired() chooses by type, @Resource chooses by name, which helps when many beans share a type (several DataSources, say). Without name the field or setter name is the bean name; when no bean has that name the point is injected by type like @Autowired (Spring's fallbackToDefaultTypeMatch). An explicit name must name a bean (an alias or &factory works too) of the point's type. A nullable point receives null when the bean is missing.

import 'package:spring_core_dart/jakarta.dart' as jakarta;

// Two stores exist; the archive one is wanted here.
@Service()
class Reports {
  @jakarta.Resource()
  late final DataSource dataSource;        // bean 'dataSource', else by type

  @jakarta.Resource(name: 'archiveStore')
  late final Store store;                  // exactly the bean 'archiveStore'
}

Spring (Java):

@Service
class Reports {
  @Resource DataSource dataSource;
  @Resource(name = "archiveStore") Store store;
}

Differences from Spring: fields and setters only (no @Resource methods with other names, no type, lookup or JNDI attributes).

Constructors

Resource({String? name})

Injects the bean named name; without it, the bean named like the field or setter, else a bean of its type.

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

name → String?

The bean name; null uses the field or setter name, with a fallback to injection by type.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited