org.apache.cassandra.db

Class CounterMutation

java.lang.Object

org.apache.cassandra.db.CounterMutation

All Implemented Interfaces:

IMutation

public class CounterMutation
extends java.lang.Object
implements IMutation

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CounterMutation.CounterMutationSerializer

Field Summary

Fields

Modifier and Type	Field and Description
static CounterMutation.CounterMutationSerializer	serializer

Constructor Summary

Constructors

Constructor and Description
CounterMutation(Mutation mutation, ConsistencyLevel consistency)

Method Summary

Methods

Modifier and Type	Method and Description
void	addAll(IMutation m)
Mutation	apply() Applies the counter mutation, returns the result Mutation (for replication to other nodes).
ConsistencyLevel	consistency()
java.util.Collection<ColumnFamily>	getColumnFamilies()
java.util.Collection<java.util.UUID>	getColumnFamilyIds()
java.lang.String	getKeyspaceName()
Mutation	getMutation()
long	getTimeout()
java.nio.ByteBuffer	key()
MessageOut<CounterMutation>	makeMutationMessage()
java.lang.String	toString()
java.lang.String	toString(boolean shallow)

Methods inherited from class java.lang.Object

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

Field Detail

serializer

public static final CounterMutation.CounterMutationSerializer serializer

Constructor Detail

CounterMutation

public CounterMutation(Mutation mutation,
               ConsistencyLevel consistency)

Method Detail

getKeyspaceName

public java.lang.String getKeyspaceName()

Specified by:

getKeyspaceName in interface IMutation

getColumnFamilyIds

public java.util.Collection<java.util.UUID> getColumnFamilyIds()

Specified by:

getColumnFamilyIds in interface IMutation

getColumnFamilies

public java.util.Collection<ColumnFamily> getColumnFamilies()

Specified by:

getColumnFamilies in interface IMutation

getMutation

public Mutation getMutation()

key

public java.nio.ByteBuffer key()

Specified by:

key in interface IMutation

consistency

public ConsistencyLevel consistency()

makeMutationMessage

public MessageOut<CounterMutation> makeMutationMessage()

apply

public Mutation apply()
               throws WriteTimeoutException

Applies the counter mutation, returns the result Mutation (for replication to other nodes). 1. Grabs the striped cell-level locks in the proper order 2. Gets the current values of the counters-to-be-modified from the counter cache 3. Reads the rest of the current values (cache misses) from the CF 4. Writes the updated counter values 5. Updates the counter cache 6. Releases the lock(s) See CASSANDRA-4775 and CASSANDRA-6504 for further details.

Returns:

the applied resulting Mutation

Throws:

WriteTimeoutException

addAll

public void addAll(IMutation m)

Specified by:

addAll in interface IMutation

getTimeout

public long getTimeout()

Specified by:

getTimeout in interface IMutation

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toString

public java.lang.String toString(boolean shallow)

Specified by:

toString in interface IMutation