org.apache.datasketches

Class ArrayOfBooleansSerDe

java.lang.Object

org.apache.datasketches.ArrayOfItemsSerDe<Boolean>

org.apache.datasketches.ArrayOfBooleansSerDe

public class ArrayOfBooleansSerDe
extends ArrayOfItemsSerDe<Boolean>

Methods of serializing and deserializing arrays of Boolean as a bit array.

Author:

Jon Malkin

Constructor Summary

Constructors

Constructor and Description
ArrayOfBooleansSerDe()

Method Summary

Modifier and Type	Method and Description
static int	computeBytesNeeded(int arrayLength) Computes number of bytes needed for packed bit encoding of the array of booleans.
Boolean[]	deserializeFromMemory(org.apache.datasketches.memory.Memory mem, int length) Deserialize an array of items from a given Memory object.
byte[]	serializeToByteArray(Boolean[] items) Serialize an array of items to byte array.

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayOfBooleansSerDe

public ArrayOfBooleansSerDe()

Method Detail

computeBytesNeeded

public static int computeBytesNeeded(int arrayLength)

Computes number of bytes needed for packed bit encoding of the array of booleans. Rounds partial bytes up to return a whole number of bytes.

Parameters:

arrayLength - Number of items in the array to serialize

Returns:

Number of bytes needed to encode the array

serializeToByteArray

public byte[] serializeToByteArray(Boolean[] items)

Description copied from class: ArrayOfItemsSerDe

Serialize an array of items to byte array. The size of the array doesn't need to be serialized. This method is called by the sketch serialization process.

Specified by:

serializeToByteArray in class ArrayOfItemsSerDe<Boolean>

Parameters:

items - array of items to be serialized

Returns:

serialized representation of the given array of items

deserializeFromMemory

public Boolean[] deserializeFromMemory(org.apache.datasketches.memory.Memory mem,
                                       int length)

Description copied from class: ArrayOfItemsSerDe

Deserialize an array of items from a given Memory object. This method is called by the sketch deserialization process.

Specified by:

deserializeFromMemory in class ArrayOfItemsSerDe<Boolean>

Parameters:

mem - Memory containing a serialized array of items

length - number of items in the serialized array

Returns:

deserialized array of items