Base-most interface

CloseableChannel3.java

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 *
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * 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
 *
 *     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.examples.example1;

import java.io.Closeable;
import java.io.IOException;

import io.examples.IoCallback2;

/**
 * @author <a href="mailto:[email protected]">David M. Lloyd</a>
 */
public interface CloseableChannel3 extends Closeable {

    default void addCloseCallback(IoCallback2<?> callback) {
        addCloseCallback(callback, null);
    }

    <T> void addCloseCallback(IoCallback2<T> callback, T attachment);

    boolean isOpen();

    /**
     * Close and truncate the channel.
     *
     * @throws IOException if the close failed
     */
    void close() throws IOException;
}