/**
* Writes the value read from the provided byte {@code buffer} at the specified {@code index} to
* the provided {@code objectOutput}.
*
* @param objectOutput the object output stream to which the value is written
* @param wordSize the number of bytes used to store the value
* @param inputBuffer the byte buffer from which the value is read
* @param index the index of the value in the the byte buffer
* @throws IOException if an error occurred writing to the provided object output stream
*/
private static void writeExternalWord(ObjectOutput objectOutput, int wordSize,
ByteBuffer inputBuffer, int index)
{
int wordIndex = index * wordSize;
if (wordSize == SHORT_NUM_BYTES) {
objectOutput.writeShort(inputBuffer.getShort(wordIndex));
} else {
objectOutput.writeInt(inputBuffer.getInt(wordIndex));
}
}
/**
* Reads the {@code value} at the specified {@code index} from the provided byte {@code buffer}.
* Note that only integer and short sizes are supported.
*
* @param buffer the byte buffer from which the value is read
* @param wordSize the number of bytes used to store the value
* @param index the index where the value is read from
*
* @return the value read from the buffer
*/
private static int readWordFromBuffer(ByteBuffer buffer, int wordSize, int index)
{
int wordIndex = index * wordSize;
return wordSize == SHORT_NUM_BYTES ? buffer.getShort(wordIndex) : buffer.getInt(wordIndex);
}