Package org.apache.cassandra.cql3

Class Lists.Discarder

java.lang.Object

org.apache.cassandra.cql3.Operation

org.apache.cassandra.cql3.Lists.Discarder

Enclosing class:

Lists

public static class Lists.Discarder
extends Operation

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.cassandra.cql3.Operation

Operation.Addition, Operation.ColumnDeletion, Operation.ElementDeletion, Operation.FieldDeletion, Operation.Prepend, Operation.RawDeletion, Operation.RawUpdate, Operation.SetElement, Operation.SetField, Operation.SetValue, Operation.Substraction

Field Summary

Fields inherited from class org.apache.cassandra.cql3.Operation

column, t

Constructor Summary

Constructors

Constructor	Description
Discarder(ColumnMetadata column, Term t)

Method Summary

Modifier and Type	Method	Description
void	execute(DecoratedKey partitionKey, UpdateParameters params)	Execute the operation.
boolean	requiresRead()

Methods inherited from class org.apache.cassandra.cql3.Operation

addFunctionsTo, collectMarkerSpecification

Methods inherited from class java.lang.Object

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

Constructor Detail

Discarder

public Discarder(ColumnMetadata column,
                 Term t)

Method Detail

requiresRead

public boolean requiresRead()

Overrides:

requiresRead in class Operation

Returns:

whether the operation requires a read of the previous value to be executed (only lists setterByIdx, discard and discardByIdx requires that).

execute

public void execute(DecoratedKey partitionKey,
                    UpdateParameters params)
             throws InvalidRequestException

Description copied from class: Operation

Execute the operation.

Specified by:

execute in class Operation

Parameters:

partitionKey - partition key for the update.

params - parameters of the update.

Throws:

InvalidRequestException