67 lines
2.6 KiB
Java
67 lines
2.6 KiB
Java
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/*
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* Copyright (c) 2007, 2009, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package java.nio.channels;
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/**
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* A handler for consuming the result of an asynchronous I/O operation.
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*
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* <p> The asynchronous channels defined in this package allow a completion
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* handler to be specified to consume the result of an asynchronous operation.
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* The {@link #completed completed} method is invoked when the I/O operation
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* completes successfully. The {@link #failed failed} method is invoked if the
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* I/O operations fails. The implementations of these methods should complete
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* in a timely manner so as to avoid keeping the invoking thread from dispatching
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* to other completion handlers.
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*
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* @param <V> The result type of the I/O operation
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* @param <A> The type of the object attached to the I/O operation
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*
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* @since 1.7
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*/
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public interface CompletionHandler<V,A> {
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/**
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* Invoked when an operation has completed.
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*
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* @param result
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* The result of the I/O operation.
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* @param attachment
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* The object attached to the I/O operation when it was initiated.
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*/
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void completed(V result, A attachment);
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/**
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* Invoked when an operation fails.
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*
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* @param exc
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* The exception to indicate why the I/O operation failed
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* @param attachment
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* The object attached to the I/O operation when it was initiated.
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*/
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void failed(Throwable exc, A attachment);
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}
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