org.apache.ignite.internal.processors.query.stat.hll.serialization

Class BigEndianAscendingWordDeserializer

java.lang.Object

org.apache.ignite.internal.processors.query.stat.hll.serialization.BigEndianAscendingWordDeserializer

All Implemented Interfaces:

IWordDeserializer

public class BigEndianAscendingWordDeserializer
extends Object
implements IWordDeserializer

A corresponding deserializer for BigEndianAscendingWordSerializer.

Constructor Summary

Constructors

Constructor and Description
BigEndianAscendingWordDeserializer(int wordLength, int bytePadding, byte[] bytes)

Method Summary

Modifier and Type	Method and Description
long	readWord()
int	totalWordCount() Returns the number of words that could be encoded in the sequence.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BigEndianAscendingWordDeserializer

public BigEndianAscendingWordDeserializer(int wordLength,
                                          int bytePadding,
                                          byte[] bytes)

Parameters:

wordLength - the length in bits of the words to be deserialized. Must be less than or equal to 64 and greater than or equal to 1.

bytePadding - the number of leading bytes that pad the serialized words. Must be greater than or equal to zero.

bytes - the byte array containing the serialized words. Cannot be null.

Method Detail

readWord

public long readWord()

Specified by:

readWord in interface IWordDeserializer

Returns:

the next word in the sequence. Should not be called more than IWordDeserializer.totalWordCount() times.

totalWordCount

public int totalWordCount()

Description copied from interface: IWordDeserializer

Returns the number of words that could be encoded in the sequence.

NOTE: the sequence that was encoded may be shorter than the value this method returns due to padding issues within bytes. This guarantees only an upper bound on the number of times IWordDeserializer.readWord() can be called.

Specified by:

totalWordCount in interface IWordDeserializer

Returns:

the maximum number of words that could be read from the sequence.