BeanFactoryAware class abstract interface

A bean that is handed the bean factory that created it, so it can look up other beans by itself while it runs.

Use it when the beans you need are only known at run time (by a name read from configuration, say). Injecting BeanFactory or an ObjectProvider<T> through the constructor does the same and is usually simpler; this interface is mostly for framework classes.

// Plugins are beans; which one runs is decided by name at run time.
@Component()
class PluginLoader implements BeanFactoryAware {
  late BeanFactory factory;

  @override
  void setBeanFactory(BeanFactory beanFactory) => factory = beanFactory;

  Plugin load(String name) => factory.getBeanByName(name) as Plugin;
}

Spring (Java):

@Component
class PluginLoader implements BeanFactoryAware {
  BeanFactory factory;
  @Override public void setBeanFactory(BeanFactory beanFactory) {
    factory = beanFactory;
  }
  Plugin load(String name) { return (Plugin) factory.getBean(name); }
}

Implemented types

• Aware

Implementers

• CacheOperationValidator

Properties

hashCode → int

The hash code for this object.

no setter, inherited

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

setBeanFactory(BeanFactory beanFactory) → void

Receives the factory that holds the bean. Called once, after injection and after BeanNameAware.setBeanName.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited