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Java example source code file (NameResolver.java)

This example Java source code file (NameResolver.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

closeable, future, nameresolver, override, promise, util

The NameResolver.java Java example source code

/*
 * Copyright 2014 The Netty Project
 *
 * The Netty Project licenses this file to you 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:
 *
 *   http://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.netty.resolver;

import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.Promise;

import java.io.Closeable;
import java.util.List;

/**
 * Resolves an arbitrary string that represents the name of an endpoint into an address.
 */
public interface NameResolver<T> extends Closeable {

    /**
     * Resolves the specified name into an address.
     *
     * @param inetHost the name to resolve
     *
     * @return the address as the result of the resolution
     */
    Future<T> resolve(String inetHost);

    /**
     * Resolves the specified name into an address.
     *
     * @param inetHost the name to resolve
     * @param promise the {@link Promise} which will be fulfilled when the name resolution is finished
     *
     * @return the address as the result of the resolution
     */
    Future<T> resolve(String inetHost, Promise promise);

    /**
     * Resolves the specified host name and port into a list of address.
     *
     * @param inetHost the name to resolve
     *
     * @return the list of the address as the result of the resolution
     */
    Future<List resolveAll(String inetHost);

    /**
     * Resolves the specified host name and port into a list of address.
     *
     * @param inetHost the name to resolve
     * @param promise the {@link Promise} which will be fulfilled when the name resolution is finished
     *
     * @return the list of the address as the result of the resolution
     */
    Future<List resolveAll(String inetHost, Promise> promise);

    /**
     * Closes all the resources allocated and used by this resolver.
     */
    @Override
    void close();
}

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