com.google.inject.assistedinject.AssistedInject Maven / Gradle / Ivy

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package com.google.inject.assistedinject;

import com.google.inject.Inject;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.CONSTRUCTOR;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * 
 * When used in tandem with {@link FactoryModuleBuilder}, constructors annotated with
 * {@code @AssistedInject} indicate that multiple constructors can be injected, each with different
 * parameters. AssistedInject annotations should not be mixed with {@literal @}{@link Inject}
 * annotations. The assisted parameters must exactly match one corresponding factory method within
 * the factory interface, but the parameters do not need to be in the same order. Constructors
 * annotated with AssistedInject are created by Guice and receive all the benefits
 * (such as AOP).
 *
 * 
 * Constructor parameters must be either supplied by the factory interface and marked with
 * @Assisted, or they must be injectable.
 */
@Target({CONSTRUCTOR})
@Retention(RUNTIME)
public @interface AssistedInject {
}