org.apache.cassandra.batchlog

Class Batch

java.lang.Object

org.apache.cassandra.batchlog.Batch

public final class Batch
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Batch.Serializer

Field Summary

Fields

Modifier and Type	Field and Description
long	creationTime
java.util.UUID	id
static Batch.Serializer	serializer

Method Summary

Modifier and Type	Method and Description
static Batch	createLocal(java.util.UUID id, long creationTime, java.util.Collection<Mutation> mutations) Creates a 'local' batch - with all enclosed mutations in decoded form (as Mutation instances)
static Batch	createRemote(java.util.UUID id, long creationTime, java.util.Collection<java.nio.ByteBuffer> mutations) Creates a 'remote' batch - with all enclosed mutations in encoded form (as ByteBuffer instances) The mutations will always be encoded using the current messaging version.
java.util.Collection<java.nio.ByteBuffer>	getEncodedMutations()
boolean	isLocal() Local batches contain only already decoded Mutation instances.
int	size() Count of the mutations in the batch.

Methods inherited from class java.lang.Object

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

Field Detail

serializer

public static final Batch.Serializer serializer

id

public final java.util.UUID id

creationTime

public final long creationTime

Method Detail

createLocal

public static Batch createLocal(java.util.UUID id,
                                long creationTime,
                                java.util.Collection<Mutation> mutations)

Creates a 'local' batch - with all enclosed mutations in decoded form (as Mutation instances)

createRemote

public static Batch createRemote(java.util.UUID id,
                                 long creationTime,
                                 java.util.Collection<java.nio.ByteBuffer> mutations)

Creates a 'remote' batch - with all enclosed mutations in encoded form (as ByteBuffer instances) The mutations will always be encoded using the current messaging version.

size

public int size()

Count of the mutations in the batch.

getEncodedMutations

public java.util.Collection<java.nio.ByteBuffer> getEncodedMutations()

isLocal

public boolean isLocal()

Local batches contain only already decoded Mutation instances. Unlike remote batches, which contain mutations encoded as ByteBuffer instances, local batches can be serialized and sent over the wire.

Returns:

true if there are no encoded mutations present, and false otherwise