io.crate.execution.dsl.projection

Class TopNProjection

java.lang.Object

io.crate.execution.dsl.projection.Projection

io.crate.execution.dsl.projection.TopNProjection

All Implemented Interfaces:

ExplainNode

public class TopNProjection
extends Projection

Nested Class Summary

Nested classes/interfaces inherited from class io.crate.execution.dsl.projection.Projection

Projection.ProjectionFactory<T extends Projection>

Constructor Summary

Constructors

Constructor and Description
TopNProjection(int limit, int offset, java.util.List<DataType> outputTypes)
TopNProjection(org.elasticsearch.common.io.stream.StreamInput in)

Method Summary

Modifier and Type	Method and Description
<C,R> R	accept(ProjectionVisitor<C,R> visitor, C context)
boolean	equals(java.lang.Object o)
int	hashCode()
int	limit()
java.util.Map<java.lang.String,java.lang.Object>	mapRepresentation()
int	offset()
java.util.List<Symbol>	outputs()
ProjectionType	projectionType()
java.lang.String	toString()
void	writeTo(org.elasticsearch.common.io.stream.StreamOutput out)

Methods inherited from class io.crate.execution.dsl.projection.Projection

fromStream, requiredGranularity, toStream

Methods inherited from class java.lang.Object

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

Constructor Detail

TopNProjection

public TopNProjection(int limit,
                      int offset,
                      java.util.List<DataType> outputTypes)

TopNProjection

public TopNProjection(org.elasticsearch.common.io.stream.StreamInput in)
               throws java.io.IOException

Throws:

java.io.IOException

Method Detail

outputs

public java.util.List<Symbol> outputs()

Specified by:

outputs in class Projection

limit

public int limit()

offset

public int offset()

projectionType

public ProjectionType projectionType()

Specified by:

projectionType in class Projection

accept

public <C,R> R accept(ProjectionVisitor<C,R> visitor,
                      C context)

Specified by:

accept in class Projection

writeTo

public void writeTo(org.elasticsearch.common.io.stream.StreamOutput out)
             throws java.io.IOException

Specified by:

writeTo in class Projection

Throws:

java.io.IOException

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in class Projection

hashCode

public int hashCode()

Overrides:

hashCode in class Projection

mapRepresentation

public java.util.Map<java.lang.String,java.lang.Object> mapRepresentation()

Specified by:

mapRepresentation in interface ExplainNode

Overrides:

mapRepresentation in class Projection

Returns:

Representation of the component as Map used for EXPLAIN

The result must be streamable using Streamer.writeValueTo(StreamOutput, Object)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object