Package org.apache.cassandra.cql3.selection

Class SimpleSelector

java.lang.Object

org.apache.cassandra.cql3.selection.Selector

org.apache.cassandra.cql3.selection.SimpleSelector

public final class SimpleSelector
extends Selector

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	SimpleSelector.SimpleSelectorFactory	The Factory for SimpleSelector.

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

Selector.Factory, Selector.InputRow, Selector.Kind, Selector.SelectorDeserializer, Selector.Serializer

Field Summary

Fields

Modifier and Type	Field	Description
final ColumnMetadata	column
protected static final Selector.SelectorDeserializer	deserializer

Fields inherited from class org.apache.cassandra.cql3.selection.Selector

serializer

Method Summary

Modifier and Type	Method	Description
void	addFetchedColumns(ColumnFilter.Builder builder)	Add to the provided builder the column (and potential subselections) to fetch for this selection.
void	addInput(Selector.InputRow input)	Add the current value from the specified ResultSetBuilder.
boolean	equals(Object o)
ByteBuffer	getOutput(ProtocolVersion protocolVersion)	Returns the selector output.
protected org.apache.cassandra.cql3.selection.ColumnTimestamps	getTTLs(ProtocolVersion protocolVersion)
AbstractType<?>	getType()	Returns the Selector output type.
protected org.apache.cassandra.cql3.selection.ColumnTimestamps	getWritetimes(ProtocolVersion protocolVersion)
int	hashCode()
static Selector.Factory	newFactory(ColumnMetadata def, int idx, boolean useForPostOrdering)
void	reset()	Reset the internal state of this Selector.
protected void	serialize(DataOutputPlus out, int version)
protected int	serializedSize(int version)
String	toString()
void	validateForGroupBy()	Checks that this selector is valid for GROUP BY clause.

Methods inherited from class org.apache.cassandra.cql3.selection.Selector

isTerminal, kind, sizeOf, writeType

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

deserializer

protected static final Selector.SelectorDeserializer deserializer

column

public final ColumnMetadata column

Method Details

newFactory

public static Selector.Factory newFactory(ColumnMetadata def,
 int idx,
 boolean useForPostOrdering)

addFetchedColumns

public void addFetchedColumns(ColumnFilter.Builder builder)

Description copied from class: Selector

Add to the provided builder the column (and potential subselections) to fetch for this selection.

Specified by:

addFetchedColumns in class Selector

Parameters:

builder - the builder to add columns and subselections to.

addInput

public void addInput(Selector.InputRow input)
              throws InvalidRequestException

Description copied from class: Selector

Add the current value from the specified ResultSetBuilder.

Specified by:

addInput in class Selector

Parameters:

input - the input row

Throws:

InvalidRequestException - if a problem occurs while adding the input row

getOutput

public ByteBuffer getOutput(ProtocolVersion protocolVersion)

Description copied from class: Selector

Returns the selector output.

Specified by:

getOutput in class Selector

Parameters:

protocolVersion - protocol version used for serialization

Returns:

the selector output

getWritetimes

protected org.apache.cassandra.cql3.selection.ColumnTimestamps getWritetimes(ProtocolVersion protocolVersion)

Overrides:

getWritetimes in class Selector

getTTLs

protected org.apache.cassandra.cql3.selection.ColumnTimestamps getTTLs(ProtocolVersion protocolVersion)

Overrides:

getTTLs in class Selector

reset

public void reset()

Description copied from class: Selector

Reset the internal state of this Selector.

Specified by:

reset in class Selector

getType

public AbstractType<?> getType()

Description copied from class: Selector

Returns the Selector output type.

Specified by:

getType in class Selector

Returns:

the Selector output type.

toString

public String toString()

Overrides:

toString in class Object

validateForGroupBy

public void validateForGroupBy()

Description copied from class: Selector

Checks that this selector is valid for GROUP BY clause.

Overrides:

validateForGroupBy in class Selector

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

serializedSize

protected int serializedSize(int version)

Specified by:

serializedSize in class Selector

serialize

protected void serialize(DataOutputPlus out,
 int version)
                  throws IOException

Specified by:

serialize in class Selector

Throws:

IOException