org.apache.cassandra.cql3.statements

Class CQL3CasRequest

java.lang.Object

org.apache.cassandra.cql3.statements.CQL3CasRequest

All Implemented Interfaces:

CASRequest

public class CQL3CasRequest
extends java.lang.Object
implements CASRequest

Processed CAS conditions and update on potentially multiple rows of the same partition.

Field Summary

Fields

Modifier and Type	Field and Description
CFMetaData	cfm
boolean	isBatch
DecoratedKey	key

Constructor Summary

Constructors

Constructor and Description
CQL3CasRequest(CFMetaData cfm, DecoratedKey key, boolean isBatch, PartitionColumns conditionColumns, boolean updatesRegularRows, boolean updatesStaticRow)

Method Summary

Modifier and Type	Method and Description
void	addConditions(Clustering clustering, java.util.Collection<ColumnCondition> conds, QueryOptions options)
void	addExist(Clustering clustering)
void	addNotExist(Clustering clustering)
void	addRowUpdate(Clustering clustering, ModificationStatement stmt, QueryOptions options, long timestamp)
boolean	appliesTo(FilteredPartition current) Returns whether the provided CF, that represents the values fetched using the readFilter(), match the CAS conditions this object stands for.
PartitionUpdate	makeUpdates(FilteredPartition current) The updates to perform of a CAS success.
SinglePartitionReadCommand	readCommand(int nowInSec) The command to use to fetch the value to compare for the CAS.

Methods inherited from class java.lang.Object

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

Field Detail

cfm

public final CFMetaData cfm

key

public final DecoratedKey key

isBatch

public final boolean isBatch

Constructor Detail

CQL3CasRequest

public CQL3CasRequest(CFMetaData cfm,
                      DecoratedKey key,
                      boolean isBatch,
                      PartitionColumns conditionColumns,
                      boolean updatesRegularRows,
                      boolean updatesStaticRow)

Method Detail

addRowUpdate

public void addRowUpdate(Clustering clustering,
                         ModificationStatement stmt,
                         QueryOptions options,
                         long timestamp)

addNotExist

public void addNotExist(Clustering clustering)
                 throws InvalidRequestException

Throws:

InvalidRequestException

addExist

public void addExist(Clustering clustering)
              throws InvalidRequestException

Throws:

InvalidRequestException

addConditions

public void addConditions(Clustering clustering,
                          java.util.Collection<ColumnCondition> conds,
                          QueryOptions options)
                   throws InvalidRequestException

Throws:

InvalidRequestException

readCommand

public SinglePartitionReadCommand readCommand(int nowInSec)

Description copied from interface: CASRequest

The command to use to fetch the value to compare for the CAS.

Specified by:

readCommand in interface CASRequest

appliesTo

public boolean appliesTo(FilteredPartition current)
                  throws InvalidRequestException

Description copied from interface: CASRequest

Returns whether the provided CF, that represents the values fetched using the readFilter(), match the CAS conditions this object stands for.

Specified by:

appliesTo in interface CASRequest

Throws:

InvalidRequestException

makeUpdates

public PartitionUpdate makeUpdates(FilteredPartition current)
                            throws InvalidRequestException

Description copied from interface: CASRequest

The updates to perform of a CAS success. The values fetched using the readFilter() are passed as argument.

Specified by:

makeUpdates in interface CASRequest

Throws:

InvalidRequestException