com.indeed.mph.serializers

Class SmartSmallLongListSerializer

java.lang.Object

com.indeed.mph.serializers.AbstractParseable<T>

com.indeed.mph.serializers.AbstractSmartSerializer<java.util.List<java.lang.Long>>

com.indeed.mph.serializers.SmartSmallLongListSerializer

All Implemented Interfaces:

Parseable<java.util.List<java.lang.Long>>, SmartSerializer<java.util.List<java.lang.Long>>, com.indeed.util.serialization.Serializer<java.util.List<java.lang.Long>>, java.io.Serializable

public class SmartSmallLongListSerializer
extends AbstractSmartSerializer<java.util.List<java.lang.Long>>

This serializer is used to serialize a list of long numbers that contains many small non-negative numbers. It uses four types of byte to encode numbers: 00 XX XX XX is used to encode three numbers in the range [0, 4). 01 XXX XXX is used to encode two numbers in the range [0, 8). 10 XXXXXXX, 11 XXXXXX are used to encode the other numbers. 11 is used at the head of leading bytes and 10 is used at the head of final byte. This serializer also supports setting offset. Minus offset from all the number when serializing and plus back when de-serializing.

Author:

xinjianz

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SmartSmallLongListSerializer()
SmartSmallLongListSerializer(long offset)

Method Summary

Modifier and Type	Method and Description
java.util.List<java.lang.Long>	read(java.io.DataInput in)
java.util.List<java.lang.Long>	readDataOnly(int length, java.io.DataInput in) Only read the data of a list, the length of the list is given as an input parameter.
void	write(java.util.List<java.lang.Long> data, java.io.DataOutput out)

Methods inherited from class com.indeed.mph.serializers.AbstractSmartSerializer

size, sizeOf, skip

Methods inherited from class com.indeed.mph.serializers.AbstractParseable

parseFromString, print, printToString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.indeed.mph.Parseable

parseFromString, print, printToString

Constructor Detail

SmartSmallLongListSerializer

public SmartSmallLongListSerializer()

SmartSmallLongListSerializer

public SmartSmallLongListSerializer(long offset)

Method Detail

write

public void write(@Nonnull
                  java.util.List<java.lang.Long> data,
                  java.io.DataOutput out)
           throws java.io.IOException

Throws:

java.io.IOException

readDataOnly

public java.util.List<java.lang.Long> readDataOnly(int length,
                                                   java.io.DataInput in)
                                            throws java.io.IOException

Only read the data of a list, the length of the list is given as an input parameter.

Parameters:

length - the length of the array to read.

in - the input data.

Returns:

the deserialized list.

Throws:

java.io.IOException - if unable to write to out

read

public java.util.List<java.lang.Long> read(java.io.DataInput in)
                                    throws java.io.IOException

Throws:

java.io.IOException