/*
 * Copyright 2012-2019 the original author or 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 org.springframework.boot.context.properties.bind;

import java.lang.reflect.Constructor;

/**
 * Strategy interface used to determine a specific constructor to use when binding.
 *
 * @author Madhura Bhave
 * @since 2.2.1
 */
@FunctionalInterface
public interface BindConstructorProvider {

	/**
	 * Default {@link BindConstructorProvider} implementation that only returns a value
	 * when there's a single constructor and when the bindable has no existing value.
	 */
	BindConstructorProvider DEFAULT = new DefaultBindConstructorProvider();

	/**
	 * Return the bind constructor to use for the given bindable, or {@code null} if
	 * constructor binding is not supported.
	 * @param bindable the bindable to check
	 * @param isNestedConstructorBinding if this binding is nested within a constructor
	 * binding
	 * @return the bind constructor or {@code null}
	 */
	Constructor<?> getBindConstructor(Bindable<?> bindable, boolean isNestedConstructorBinding);

}
