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The Amazon Web Services SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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/*
 * Copyright 2011-2014 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 com.amazonaws.util;

import org.apache.http.annotation.ThreadSafe;

/**
 * A {@link TimingInfo} that is unmodifiable.
 */
@ThreadSafe
final class TimingInfoUnmodifiable extends TimingInfo {
    /**
     * @see TimingInfo#unmodifiableTimingInfo(long, Long)
     * @see TimingInfo#unmodifiableTimingInfo(long, long, Long)
     * 
     * @param startEpochTimeMilli
     *            start time since epoch in millisecond; or null if not known
     * @param startTimeNano
     *            start time in nanosecond
     * @param endTimeNano
     *            end time in nanosecond; or null if not known
     */
    TimingInfoUnmodifiable(Long startEpochTimeMilli, long startTimeNano, Long endTimeNano) {
        super(startEpochTimeMilli, startTimeNano, endTimeNano);
    }

    /**
     * Always throws {@link UnsupportedOperationException}.
     */
    @Override public void setEndTime(long _) {
        throw new UnsupportedOperationException();
    }
    /**
     * Always throws {@link UnsupportedOperationException}.
     */
    @Override public void setEndTimeNano(long _) {
        throw new UnsupportedOperationException();
    }
    /**
     * Always throws {@link UnsupportedOperationException}.
     */
    @Override public TimingInfo endTiming() {
        throw new UnsupportedOperationException();
    }
}