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The tablet server for Apache Accumulo to host tablets of data tables.

There is a newer version: 3.0.0

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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 org.apache.accumulo.tserver;

import org.apache.accumulo.core.data.Value;

public class MemValue {

  Value value;
  int kvCount;

  public MemValue(Value value, int kv) {
    this.value = value;
    this.kvCount = kv;
  }

  public static Value encode(Value value, int kv) {
    byte[] combinedBytes = new byte[value.getSize() + 4];
    System.arraycopy(value.get(), 0, combinedBytes, 4, value.getSize());
    combinedBytes[0] = (byte) (kv >>> 24);
    combinedBytes[1] = (byte) (kv >>> 16);
    combinedBytes[2] = (byte) (kv >>> 8);
    combinedBytes[3] = (byte) (kv);
    return new Value(combinedBytes);
  }

  public static MemValue decode(Value v) {
    byte[] originalBytes = new byte[v.getSize() - 4];
    byte[] combined = v.get();
    System.arraycopy(combined, 4, originalBytes, 0, originalBytes.length);
    int kv = (combined[0] << 24) + ((combined[1] & 0xFF) << 16) + ((combined[2] & 0xFF) << 8)
        + (combined[3] & 0xFF);

    return new MemValue(new Value(originalBytes), kv);
  }
}