/*
 * Copyright 2004-present 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.security.config.annotation.authentication.configurers.provisioning;

import java.util.ArrayList;

import org.springframework.security.config.annotation.authentication.ProviderManagerBuilder;
import org.springframework.security.provisioning.InMemoryUserDetailsManager;

/**
 * Configures an
 * {@link org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder}
 * to have in memory authentication. It also allows easily adding users to the in memory
 * authentication.
 *
 * @param <B> the type of the {@link ProviderManagerBuilder} that is being configured
 * @author Rob Winch
 * @since 3.2
 */
public class InMemoryUserDetailsManagerConfigurer<B extends ProviderManagerBuilder<B>>
		extends UserDetailsManagerConfigurer<B, InMemoryUserDetailsManagerConfigurer<B>> {

	/**
	 * Creates a new instance
	 */
	public InMemoryUserDetailsManagerConfigurer() {
		super(new InMemoryUserDetailsManager(new ArrayList<>()));
	}

	public B and() {
		return getBuilder();
	}

}
