org.apache.cassandra.service

Class RowDigestResolver

java.lang.Object

org.apache.cassandra.service.AbstractRowResolver

org.apache.cassandra.service.RowDigestResolver

All Implemented Interfaces:

IResponseResolver<ReadResponse,Row>

public class RowDigestResolver
extends AbstractRowResolver

Field Summary

Fields inherited from class org.apache.cassandra.service.AbstractRowResolver

key, keyspaceName, logger, replies

Constructor Summary

Constructors

Constructor and Description
RowDigestResolver(java.lang.String keyspaceName, java.nio.ByteBuffer key)

Method Summary

Methods

Modifier and Type	Method and Description
Row	getData() Special case of resolve() so that CL.ONE reads never throw DigestMismatchException in the foreground
boolean	isDataPresent()
Row	resolve() This Method resolves the responses that are passed in .

Methods inherited from class org.apache.cassandra.service.AbstractRowResolver

getMessages, preprocess

Methods inherited from class java.lang.Object

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

Constructor Detail

RowDigestResolver

public RowDigestResolver(java.lang.String keyspaceName,
                 java.nio.ByteBuffer key)

Method Detail

getData

public Row getData()

Special case of resolve() so that CL.ONE reads never throw DigestMismatchException in the foreground

resolve

public Row resolve()
            throws DigestMismatchException

Description copied from interface: IResponseResolver

This Method resolves the responses that are passed in . for example : if its write response then all we get is true or false return values which implies if the writes were successful but for reads its more complicated you need to look at the responses and then based on differences schedule repairs . Hence you need to derive a response resolver based on your needs from this interface.

Throws:

DigestMismatchException

isDataPresent

public boolean isDataPresent()