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.

Constructor Summary

Constructors

Constructor and Description
CQL3CasRequest(CFMetaData cfm, java.nio.ByteBuffer key, boolean isBatch)

Method Summary

Modifier and Type	Method and Description
void	addConditions(Composite prefix, java.util.Collection<ColumnCondition> conds, QueryOptions options)
void	addExist(Composite prefix)
void	addNotExist(Composite prefix)
void	addRowUpdate(Composite prefix, ModificationStatement stmt, QueryOptions options, long timestamp)
boolean	appliesTo(ColumnFamily current) Returns whether the provided CF, that represents the values fetched using the readFilter(), match the CAS conditions this object stands for.
ColumnFamily	makeUpdates(ColumnFamily current) The updates to perform of a CAS success.
IDiskAtomFilter	readFilter() The filter 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

Constructor Detail

CQL3CasRequest

public CQL3CasRequest(CFMetaData cfm,
                      java.nio.ByteBuffer key,
                      boolean isBatch)

Method Detail

addRowUpdate

public void addRowUpdate(Composite prefix,
                         ModificationStatement stmt,
                         QueryOptions options,
                         long timestamp)

addNotExist

public void addNotExist(Composite prefix)
                 throws InvalidRequestException

Throws:

InvalidRequestException

addExist

public void addExist(Composite prefix)
              throws InvalidRequestException

Throws:

InvalidRequestException

addConditions

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

Throws:

InvalidRequestException

readFilter

public IDiskAtomFilter readFilter()

Description copied from interface: CASRequest

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

Specified by:

readFilter in interface CASRequest

appliesTo

public boolean appliesTo(ColumnFamily 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 ColumnFamily makeUpdates(ColumnFamily 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