org.janusgraph.graphdb.database.serialize.attribute

Class UUIDSerializer

java.lang.Object

org.janusgraph.graphdb.database.serialize.attribute.UUIDSerializer

All Implemented Interfaces:

AttributeSerializer<UUID>, OrderPreservingSerializer<UUID>

public class UUIDSerializer
extends Object
implements OrderPreservingSerializer<UUID>

Author:

Bryn Cooke (bryn.cooke@datastax.com)

Constructor Summary

Constructors

Constructor and Description
UUIDSerializer()

Method Summary

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

Constructor Detail

UUIDSerializer

public UUIDSerializer()

Method Detail

read

public UUID 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<UUID>

Parameters:

buffer - ReadBuffer to read attribute from

Returns:

Read attribute

write

public void write(WriteBuffer buffer,
                  UUID 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<UUID>

Parameters:

buffer - WriteBuffer to write attribute to

attribute - Attribute to write to WriteBuffer

convert

public UUID 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<UUID>

Parameters:

value - to convert

Returns:

converted to expected data type

readByteOrder

public UUID 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<UUID>

Parameters:

buffer - ReadBuffer to read attribute from

Returns:

Read attribute

writeByteOrder

public void writeByteOrder(WriteBuffer buffer,
                           UUID 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<UUID>

Parameters:

buffer - WriteBuffer to write attribute to

attribute - Attribute to write to WriteBuffer