io.micronaut.inject.InstantiatableBeanDefinition Maven / Gradle / Ivy
/*
* Copyright 2017-2022 original authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.micronaut.inject;
import io.micronaut.context.BeanContext;
import io.micronaut.context.BeanResolutionContext;
import io.micronaut.context.DefaultBeanResolutionContext;
import io.micronaut.context.exceptions.BeanInstantiationException;
import io.micronaut.core.annotation.Internal;
import io.micronaut.core.annotation.NonNull;
/**
* An type of {@link BeanDefinition} that can build a new instance.
*
* @param The bean type
* @author Denis Stepanov
* @since 4.0
*/
@Internal
public interface InstantiatableBeanDefinition extends BeanDefinition {
/**
* Builds a bean instance.
*
* @param context The context
* @return The instance
* @throws BeanInstantiationException if the instance could not be instantiated
*/
@NonNull
default T instantiate(@NonNull BeanContext context) throws BeanInstantiationException {
try (DefaultBeanResolutionContext resolutionContext = new DefaultBeanResolutionContext(context, this)) {
return instantiate(resolutionContext, context);
}
}
/**
* Builds a bean instance.
*
* @param resolutionContext The bean resolution context
* @param context The context
* @return The instance
* @throws BeanInstantiationException if the instance could not be instantiated
*/
@NonNull
T instantiate(@NonNull BeanResolutionContext resolutionContext, @NonNull BeanContext context) throws BeanInstantiationException;
}