com.indeed.mph.serializers

Class SmartVLongSerializer

java.lang.Object

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

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

com.indeed.mph.serializers.AbstractSmartLongSerializer

com.indeed.mph.serializers.SmartVLongSerializer

All Implemented Interfaces:

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

public class SmartVLongSerializer
extends AbstractSmartLongSerializer

Author:

alexs

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SmartVLongSerializer()

Method Summary

Modifier and Type	Method and Description
java.lang.Long	read(java.io.DataInput in)
static long	readVLong(java.io.DataInput in) Decoding the variable-length integer.
LinearDiophantineEquation	size()
long	sizeOf(java.lang.Long n)
void	write(java.lang.Long n, java.io.DataOutput out)

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

parseFromString

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

skip

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

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

print, printToString

Constructor Detail

SmartVLongSerializer

public SmartVLongSerializer()

Method Detail

write

public void write(@Nonnull
                  java.lang.Long n,
                  java.io.DataOutput out)
           throws java.io.IOException

Throws:

java.io.IOException

read

public java.lang.Long read(java.io.DataInput in)
                    throws java.io.IOException

Throws:

java.io.IOException

sizeOf

public long sizeOf(java.lang.Long n)
            throws java.io.IOException

Specified by:

sizeOf in interface SmartSerializer<java.lang.Long>

Overrides:

sizeOf in class AbstractSmartSerializer<java.lang.Long>

Throws:

java.io.IOException

size

public LinearDiophantineEquation size()

Specified by:

size in interface SmartSerializer<java.lang.Long>

Overrides:

size in class AbstractSmartSerializer<java.lang.Long>

readVLong

public static long readVLong(java.io.DataInput in)
                      throws java.io.IOException

Decoding the variable-length integer. Suppose the value of the first byte is FB, and the following bytes are NB[*].

• if (FB >= -32), return (long)FB;
• if (FB in [-72, -33]), return (FB+52)<<8 + NB[0]&0xff;
• if (FB in [-104, -73]), return (FB+88)<<16 + (NB[0]&0xff)<<8 + NB[1]&0xff;
• if (FB in [-120, -105]), return (FB+112)<<24 + (NB[0]&0xff)<<16 + (NB[1]&0xff)<<8 + NB[2]&0xff;
• if (FB in [-128, -121]), return interpret NB[FB+129] as a signed big-endian integer.

Parameters:

in - input stream

Returns:

the decoded long integer.

Throws:

java.io.IOException - if unable to read from in