BytesUnit.java

/**
 * Copyright 2016 Hortonworks.
 *
 * 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 com.hortonworks.registries.cache.view.config;

public enum BytesUnit {
    BYTES {
    public long toBytes(long d) { return d; }
    public long toKilobytes(long d) { return d/RATIO; }
    public long toMegabytes(long d)  { return d/RATIO_POW_2; }
    },
    KILOBYTES {
        public long toBytes(long d)  { return d*RATIO; }
        public long toKilobytes(long d) { return d; }
        public long toMegabytes(long d)  { return d/RATIO; }
    },
    MEGABYTES {
        public long toBytes(long d)  { return d*RATIO_POW_2; }
        public long toKilobytes(long d) { return d*RATIO; }
        public long toMegabytes(long d)  { return d; }
    };

    private static final long RATIO = 1024;
    private static final long RATIO_POW_2 = 1024*1024;

    public long toBytes(long d)  {throw new AbstractMethodError(); }
    public long toKilobytes(long d) {throw new AbstractMethodError(); }
    public long toMegabytes(long d) {throw new AbstractMethodError(); }
}