io.micronaut.aop.ConstructorInterceptor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of micronaut-aop Show documentation

Core components supporting the Micronaut Framework

There is a newer version: 4.6.5

/*
 * Copyright 2017-2021 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.aop;

import io.micronaut.core.annotation.NonNull;

/**
 * A {@link ConstructorInterceptor} extends the default {@link Interceptor} interface and allows intercepting constructors.
 *
 * @param  The bean type
 * @author graemerocher
 * @since 3.0.0
 */
@FunctionalInterface
public interface ConstructorInterceptor extends Interceptor {

    /**
     * Extended version of the {@link #intercept(InvocationContext)} method that accepts a {@link ConstructorInvocationContext}.
     *
     * It is illegal for constructor interceptors to return null and an exception will be thrown if this occurs.
     *
     * @param context The context
     * @return The constructed object. Should never be null.
     */
    @NonNull T intercept(@NonNull ConstructorInvocationContext context);

    @Override
    default @NonNull T intercept(@NonNull InvocationContext context) {
        if (context instanceof ConstructorInvocationContext) {
            return intercept((ConstructorInvocationContext) context);
        } else {
            throw new IllegalArgumentException("Context must be an instance of MethodInvocationContext");
        }
    }
}