/*
 * 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
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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package io.micronaut.inject;

import io.micronaut.context.BeanContext;
import io.micronaut.context.BeanResolutionContext;
import io.micronaut.context.exceptions.BeanInstantiationException;
import io.micronaut.core.type.Argument;

import java.util.Map;

A BeanFactory that requires additional (possibly user supplied) parameters in order construct a bean.
Author:Graeme Rocher
Type parameters:
  • <T> – The type
Since:1.0
/** * A {@link BeanFactory} that requires additional (possibly user supplied) parameters in order construct a bean. * * @param <T> The type * @author Graeme Rocher * @since 1.0 */
public interface ParametrizedBeanFactory<T> extends BeanFactory<T> {
Returns:The arguments required to construct this bean
/** * @return The arguments required to construct this bean */
Argument<?>[] getRequiredArguments();
Variation of the BeanFactory.build(BeanContext, BeanDefinition) method that allows passing the values necessary for successful bean construction.
Params:
Throws:
Returns:The instantiated bean
/** * Variation of the {@link #build(BeanContext, BeanDefinition)} method that allows passing the values necessary for * successful bean construction. * * @param resolutionContext The {@link BeanResolutionContext} * @param context The {@link BeanContext} * @param definition The {@link BeanDefinition} * @param requiredArgumentValues The required arguments values. The keys should match the names of the arguments * returned by {@link #getRequiredArguments()} * @return The instantiated bean * @throws BeanInstantiationException If the bean cannot be instantiated for the arguments supplied */
T build(BeanResolutionContext resolutionContext, BeanContext context, BeanDefinition<T> definition, Map<String, Object> requiredArgumentValues) throws BeanInstantiationException; @Override default T build(BeanResolutionContext resolutionContext, BeanContext context, BeanDefinition<T> definition) throws BeanInstantiationException { throw new BeanInstantiationException(definition, "Cannot instantiate parametrized bean with no arguments"); } }