/*
* Copyright 2017-2020 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;
An interface for classes that are capable of taking the BeanDefinition
instance and building a concrete instance. This interface is generally implemented by a build time tool such as an AST transformation framework that will build the code necessary to construct a valid bean instance.
Author: Graeme Rocher Type parameters: - <T> – The bean type
See Also: Since: 1.0
/**
* <p>An interface for classes that are capable of taking the {@link BeanDefinition} instance and building a concrete
* instance.
* This interface is generally implemented by a build time tool such as an AST transformation framework that will build
* the code necessary to construct a valid bean instance.</p>
*
* @param <T> The bean type
* @author Graeme Rocher
* @see io.micronaut.inject.writer.BeanDefinitionWriter
* @since 1.0
*/
public interface BeanFactory<T> {
Builds a bean instance.
Params: - context – The context
- definition – The definition
Throws: - BeanInstantiationException – if the instance could not be instantiated
Returns: The instance
/**
* Builds a bean instance.
*
* @param context The context
* @param definition The definition
* @return The instance
* @throws BeanInstantiationException if the instance could not be instantiated
*/
default T build(BeanContext context, BeanDefinition<T> definition) throws BeanInstantiationException {
return build(new DefaultBeanResolutionContext(context, definition), context, definition);
}
Builds a bean instance.
Params: - resolutionContext – The bean resolution context
- context – The context
- definition – The definition
Throws: - BeanInstantiationException – if the instance could not be instantiated
Returns: The instance
/**
* Builds a bean instance.
*
* @param resolutionContext The bean resolution context
* @param context The context
* @param definition The definition
* @return The instance
* @throws BeanInstantiationException if the instance could not be instantiated
*/
T build(BeanResolutionContext resolutionContext, BeanContext context, BeanDefinition<T> definition) throws BeanInstantiationException;
}