software.amazon.awssdk.enhanced.dynamodb.internal.mapper.BeanConstructor Maven / Gradle / Ivy

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/*
 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file 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 software.amazon.awssdk.enhanced.dynamodb.internal.mapper;

import java.lang.reflect.Constructor;
import java.util.function.Supplier;
import software.amazon.awssdk.annotations.SdkInternalApi;
import software.amazon.awssdk.utils.Validate;

@FunctionalInterface
@SdkInternalApi
@SuppressWarnings("unchecked")
public interface BeanConstructor extends Supplier {
    static  BeanConstructor create(Class beanClass, Constructor noArgsConstructor) {
        Validate.isTrue(noArgsConstructor.getParameterCount() == 0,
                        "%s has no default constructor.",
                        beanClass);

        return LambdaToMethodBridgeBuilder.create(BeanConstructor.class)
                                          .lambdaMethodName("get")
                                          .runtimeLambdaSignature(Object.class)
                                          .compileTimeLambdaSignature(beanClass)
                                          .targetMethod(noArgsConstructor)
                                          .build();
    }
}