io.crate.execution.dsl.projection

Class EvalProjection

java.lang.Object

io.crate.execution.dsl.projection.Projection

io.crate.execution.dsl.projection.EvalProjection

All Implemented Interfaces:

ExplainNode

public class EvalProjection
extends Projection

Projection which can evaluate functions or re-order columns

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
EvalProjection(java.util.List<Symbol> outputs)
EvalProjection(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()
java.util.Map<java.lang.String,java.lang.Object>	mapRepresentation()
java.util.List<? extends Symbol>	outputs()
ProjectionType	projectionType()
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, toString, wait, wait, wait

Constructor Detail

EvalProjection

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

EvalProjection

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

Throws:

java.io.IOException

Method Detail

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

outputs

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

Specified by:

outputs 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)