content: /*
   * 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.asterix.om.base;
  
  import org.apache.asterix.common.exceptions.ErrorCode;
  import org.apache.asterix.common.exceptions.RuntimeDataException;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.util.string.UTF8StringUtil;
  
  public class AMutableUUID extends AUUID {
  
      private final byte[] hexBytesBuffer = new byte[UUID_CHARS];
  
      public void parseUUIDString(char[] buffer, int begin, int len) throws HyracksDataException {
          if (len != UUID_CHARS) {
              throw new HyracksDataException("This is not a correct UUID value: " + new String(buffer, begin, len));
          }
          for (int i = 0; i < len; i++) {
              hexBytesBuffer[i] = (byte) buffer[begin + i];
          }
          parseUUIDHexBytes(hexBytesBuffer, 0);
      }
  
      public void parseUUIDHexBytes(byte[] serString, int offset) throws HyracksDataException {
          // First part - 8 bytes
          decodeBytesFromHex(serString, offset, uuidBytes, 0, 8);
          offset += 8;
  
          // Skip the hyphen part
          offset += 1;
  
          // Second part - 4 bytes
          decodeBytesFromHex(serString, offset, uuidBytes, 4, 4);
          offset += 4;
  
          // Skip the hyphen part
          offset += 1;
  
          // Third part - 4 bytes
          decodeBytesFromHex(serString, offset, uuidBytes, 6, 4);
          offset += 4;
  
          // Skip the hyphen part
          offset += 1;
  
          // Fourth part - 4 bytes
          decodeBytesFromHex(serString, offset, uuidBytes, 8, 4);
          offset += 4;
  
          // Skip the hyphen part
          offset += 1;
  
          // The last part - 12 bytes
          decodeBytesFromHex(serString, offset, uuidBytes, 10, 12);
      }
  
      // Calculate a long value from a hex string.
      private static void decodeBytesFromHex(byte[] hexArray, int hexArrayOffset, byte[] outputArray, int outputOffset,
              int length) throws HyracksDataException {
          try {
              for (int i = hexArrayOffset; i < hexArrayOffset + length;) {
                  int hi = transformHexCharToInt(hexArray[i++]);
                  outputArray[outputOffset++] = (byte) (hi << 4 | transformHexCharToInt(hexArray[i++]));
              }
          } catch (Exception ex) {
              // Can also happen in case of invalid length, out of bound exception
              throw new RuntimeDataException(ErrorCode.INVALID_FORMAT, "uuid", UTF8StringUtil.toString(hexArray, 1));
          }
      }
  
      // Interpret a character to the corresponding integer value.
      private static int transformHexCharToInt(byte val) throws HyracksDataException {
          switch (val) {
              case '0':
                  return 0;
              case '1':
                  return 1;
              case '2':
                  return 2;
              case '3':
                  return 3;
              case '4':
                  return 4;
              case '5':
                  return 5;
              case '6':
                  return 6;
              case '7':
                  return 7;
              case '8':
                  return 8;
              case '9':
                  return 9;
              case 'a':
              case 'A':
                  return 10;
              case 'b':
              case 'B':
                  return 11;
              case 'c':
              case 'C':
                  return 12;
              case 'd':
              case 'D':
                  return 13;
              case 'e':
              case 'E':
                  return 14;
              case 'f':
              case 'F':
                  return 15;
              default:
                  throw new RuntimeDataException(ErrorCode.INVALID_FORMAT);
          }
      }
  }
  