ConditionGroup class

The conditions of one configuration class, decided once for the whole class, so that the class is registered all or nothing.

A class's conditions also guard its @Bean methods, its @Imports, the classes it imports and its @PropertySources. Without the group, a class condition such as "no Foo bean yet" would be checked again for every @Bean method, and would drop the methods that come after the class's own Foo. The group is decided once per ConfigurationPhase, as Spring decides per class.

The generator wraps class conditions in a group keyed by the class; write one only for hand-written definitions that belong together.

// The class and its cache bean: both or neither.
const group = ConditionGroup('package:app/cache.dart#CacheConfig', [
  OnMissingCache(),
]);
BeanDefinition<CacheConfig>(
  name: 'cacheConfig',
  conditions: const [group],
  ...,
);
BeanDefinition<Cache>(name: 'cache', conditions: const [group], ...);

Spring (Java): ConditionEvaluator tracking configuration classes.

Implemented types

• Condition

Constructors

ConditionGroup(String key, List<Condition> conditions)

Groups conditions under key, usually library#Class.

const

Properties

conditions → List<Condition>

The conditions of the class; all must match.

final

hashCode → int

The hash code for this object.

no setter, inherited

key → String

Identifies the group within one refresh; the cached decision and the report entries are stored under it.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

matches(ConditionContext context) → bool

Whether the annotated bean should be registered; context gives access to the configuration and the definitions registered so far.

override

matchesIn(ConditionContext context, ConfigurationPhase phase) → bool

Whether the conditions that count in phase all match (see conditionsMatch); decided once per phase.

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