org.apache.cassandra.service
Class ReadCallback<T>

java.lang.Object
  org.apache.cassandra.service.ReadCallback<T>

All Implemented Interfaces:

IAsyncCallback, IMessageCallback

Direct Known Subclasses:

DatacenterReadCallback

public class ReadCallback<T>
extends java.lang.Object
implements IAsyncCallback

Field Summary

protected int	blockfor
protected SimpleCondition	condition
protected static org.slf4j.Logger	logger
IResponseResolver<T>	resolver

Constructor Summary

ReadCallback(IResponseResolver<T> resolver, ConsistencyLevel consistencyLevel, java.lang.String table)
Constructor when response count has to be calculated and blocked for.

Method Summary

void	assureSufficientLiveNodes(java.util.Collection<java.net.InetAddress> endpoints)
int	determineBlockFor(ConsistencyLevel consistencyLevel, java.lang.String table)
T	get()
void	response(Message message)
void	response(ReadResponse result)

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final org.slf4j.Logger logger

resolver

public final IResponseResolver<T> resolver

condition

protected final SimpleCondition condition

blockfor

protected final int blockfor

Constructor Detail

ReadCallback

public ReadCallback(IResponseResolver<T> resolver,
                    ConsistencyLevel consistencyLevel,
                    java.lang.String table)

Constructor when response count has to be calculated and blocked for.

Method Detail

get

public T get()
      throws java.util.concurrent.TimeoutException,
             DigestMismatchException,
             java.io.IOException

Throws:

java.util.concurrent.TimeoutException

DigestMismatchException

java.io.IOException

response

public void response(Message message)

Specified by:

response in interface IAsyncCallback

Parameters:

message - response received.

response

public void response(ReadResponse result)

determineBlockFor

public int determineBlockFor(ConsistencyLevel consistencyLevel,
                             java.lang.String table)

assureSufficientLiveNodes

public void assureSufficientLiveNodes(java.util.Collection<java.net.InetAddress> endpoints)
                               throws UnavailableException

Throws:

UnavailableException