me.prettyprint.cassandra.service

Class BatchMutation<K>

java.lang.Object

me.prettyprint.cassandra.service.BatchMutation<K>

public final class BatchMutation<K>
extends Object

A BatchMutation object is used to construct the KeyspaceService.batchMutate(BatchMutation) call. A BatchMutation encapsulates a set of updates (or insertions) and deletions all submitted at the same time to cassandra. The BatchMutation object is useful for user friendly construction of the thrift call batch_mutate.

Author:

Ran Tavory (rantan@outbrain.com), Nathan McCall (nate@riptano.com), Patricio Echague (patricioe@gmail.com)

Constructor Summary

Constructors

Constructor and Description
BatchMutation(Serializer<K> serializer)
BatchMutation(Serializer<K> serializer, BatchSizeHint sizeHint)

Method Summary

Methods

Modifier and Type	Method and Description
BatchMutation<K>	addCounterInsertion(K key, List<String> columnFamilies, org.apache.cassandra.thrift.CounterColumn counterColumn) Add a ColumnCounter insertion (or update)
BatchMutation<K>	addDeletion(K key, List<String> columnFamilies, org.apache.cassandra.thrift.Deletion deletion) Add a deletion request to the batch mutation.
BatchMutation<K>	addInsertion(K key, List<String> columnFamilies, org.apache.cassandra.thrift.Column column) Add an Column insertion (or update) to the batch mutation request.
BatchMutation<K>	addSuperCounterInsertion(K key, List<String> columnFamilies, org.apache.cassandra.thrift.CounterSuperColumn counterSuperColumn) Add a SuperColumnCounter insertion (or update)
BatchMutation<K>	addSuperInsertion(K key, List<String> columnFamilies, org.apache.cassandra.thrift.SuperColumn superColumn) Add a SuperColumn insertion (or update) to the batch mutation request.
Map<ByteBuffer,Map<String,List<org.apache.cassandra.thrift.Mutation>>>	getMutationMap()
int	getSize() Return the current size of the underlying map
boolean	isEmpty() Checks whether the mutation object contains any mutations.
BatchMutation<K>	makeCopy() Makes a shallow copy of the mutation object.

Methods inherited from class java.lang.Object

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

Constructor Detail

BatchMutation

public BatchMutation(Serializer<K> serializer,
             BatchSizeHint sizeHint)

BatchMutation

public BatchMutation(Serializer<K> serializer)

Method Detail

addInsertion

public BatchMutation<K> addInsertion(K key,
                            List<String> columnFamilies,
                            org.apache.cassandra.thrift.Column column)

Add an Column insertion (or update) to the batch mutation request.

addSuperInsertion

public BatchMutation<K> addSuperInsertion(K key,
                                 List<String> columnFamilies,
                                 org.apache.cassandra.thrift.SuperColumn superColumn)

Add a SuperColumn insertion (or update) to the batch mutation request.

addCounterInsertion

public BatchMutation<K> addCounterInsertion(K key,
                                   List<String> columnFamilies,
                                   org.apache.cassandra.thrift.CounterColumn counterColumn)

Add a ColumnCounter insertion (or update)

addSuperCounterInsertion

public BatchMutation<K> addSuperCounterInsertion(K key,
                                        List<String> columnFamilies,
                                        org.apache.cassandra.thrift.CounterSuperColumn counterSuperColumn)

Add a SuperColumnCounter insertion (or update)

addDeletion

public BatchMutation<K> addDeletion(K key,
                           List<String> columnFamilies,
                           org.apache.cassandra.thrift.Deletion deletion)

Add a deletion request to the batch mutation.

getMutationMap

public Map<ByteBuffer,Map<String,List<org.apache.cassandra.thrift.Mutation>>> getMutationMap()

makeCopy

public BatchMutation<K> makeCopy()

Makes a shallow copy of the mutation object.

Returns:

isEmpty

public boolean isEmpty()

Checks whether the mutation object contains any mutations.

Returns:

getSize

public int getSize()

Return the current size of the underlying map

Returns: