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The lmdbjni osx 64 bit native libraries

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/**
 * Copyright (C) 2013, RedHat, Inc.
 *
 *    http://www.redhat.com/
 *
 * 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 org.fusesource.lmdbjni;

/**
 * @author Hiram Chirino
 */
class Value extends JNI.MDB_val {

  public Value() {
  }

  public Value(long data, long length) {
    this.mv_data = data;
    this.mv_size = length;
  }

  public Value(NativeBuffer buffer) {
    this(buffer.pointer(), buffer.capacity());
  }

  public static Value create(NativeBuffer buffer) {
    if (buffer == null) {
      return null;
    } else {
      return new Value(buffer);
    }
  }

  public byte[] toByteArray() {
    if (mv_data == 0) {
      return null;
    }
    if (mv_size > Integer.MAX_VALUE) {
      throw new ArrayIndexOutOfBoundsException("Native slice is larger than the maximum Java array");
    }
    byte[] rc = new byte[(int) mv_size];
    if (Unsafe.UNSAFE != null) {
      Unsafe.getBytes(mv_data, 0, rc);
    } else {
      JNI.buffer_copy(mv_data, 0, rc, 0, rc.length);
    }
    return rc;
  }

}