org.janusgraph.graphdb.database.serialize.attribute

Class LongSerializer

java.lang.Object

org.janusgraph.graphdb.database.serialize.attribute.LongSerializer

All Implemented Interfaces:

AttributeSerializer<Long>, OrderPreservingSerializer<Long>

public class LongSerializer
extends Object
implements OrderPreservingSerializer<Long>

Field Summary

Fields

Modifier and Type	Field and Description
static LongSerializer	INSTANCE

Constructor Summary

Constructors

Constructor and Description
LongSerializer()

Method Summary

Modifier and Type	Method and Description
Long	convert(Object value) Converts the given (not-null) value to the expected data type V.
Long	read(ScanBuffer buffer) Reads an attribute from the given ReadBuffer.
Long	readByteOrder(ScanBuffer buffer) Reads an attribute from the given ReadBuffer assuming it was written in byte order.
void	write(WriteBuffer out, Long attribute) Writes the attribute value to the given WriteBuffer.
void	writeByteOrder(WriteBuffer out, Long attribute) Writes the attribute value to the given WriteBuffer such that the byte order of the result is equal to the natural order of the attribute.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.janusgraph.core.attribute.AttributeSerializer

verifyAttribute

Field Detail

INSTANCE

public static final LongSerializer INSTANCE

Constructor Detail

LongSerializer

public LongSerializer()

Method Detail

read

public Long read(ScanBuffer buffer)

Description copied from interface: AttributeSerializer

Reads an attribute from the given ReadBuffer.

It is expected that this read operation adjusts the position in the ReadBuffer to after the attribute value.

Specified by:

read in interface AttributeSerializer<Long>

Parameters:

buffer - ReadBuffer to read attribute from

Returns:

Read attribute

write

public void write(WriteBuffer out,
                  Long attribute)

Description copied from interface: AttributeSerializer

Writes the attribute value to the given WriteBuffer.

It is expected that this write operation adjusts the position in the WriteBuffer to after the attribute value.

Specified by:

write in interface AttributeSerializer<Long>

Parameters:

out - WriteBuffer to write attribute to

attribute - Attribute to write to WriteBuffer

readByteOrder

public Long readByteOrder(ScanBuffer buffer)

Description copied from interface: OrderPreservingSerializer

Reads an attribute from the given ReadBuffer assuming it was written in byte order.

It is expected that this read operation adjusts the position in the ReadBuffer to after the attribute value.

Specified by:

readByteOrder in interface OrderPreservingSerializer<Long>

Parameters:

buffer - ReadBuffer to read attribute from

Returns:

Read attribute

writeByteOrder

public void writeByteOrder(WriteBuffer out,
                           Long attribute)

Description copied from interface: OrderPreservingSerializer

Writes the attribute value to the given WriteBuffer such that the byte order of the result is equal to the natural order of the attribute.

It is expected that this write operation adjusts the position in the WriteBuffer to after the attribute value.

Specified by:

writeByteOrder in interface OrderPreservingSerializer<Long>

Parameters:

out - WriteBuffer to write attribute to

attribute - Attribute to write to WriteBuffer

convert

public Long convert(Object value)

Description copied from interface: AttributeSerializer

Converts the given (not-null) value to the expected data type V. The given object will NOT be of type V. Throws an IllegalArgumentException if it cannot be converted.

Specified by:

convert in interface AttributeSerializer<Long>

Parameters:

value - to convert

Returns:

converted to expected data type