io.druid.segment.virtual

Class ExpressionColumnValueSelector

java.lang.Object

io.druid.segment.virtual.ExpressionColumnValueSelector

All Implemented Interfaces:

HotLoopCallee, BaseDoubleColumnValueSelector, BaseFloatColumnValueSelector, BaseLongColumnValueSelector, BaseObjectColumnValueSelector<ExprEval>, ColumnValueSelector<ExprEval>

public class ExpressionColumnValueSelector
extends Object
implements ColumnValueSelector<ExprEval>

Constructor Summary

Constructors

Constructor and Description
ExpressionColumnValueSelector(Expr expression, Expr.ObjectBinding bindings)

Method Summary

Modifier and Type	Method and Description
Class<ExprEval>	classOfObject()
double	getDouble()
float	getFloat()
long	getLong()
ExprEval	getObject()
void	inspectRuntimeShape(RuntimeShapeInspector inspector) Implementations of this method should call inspector.visit() with all fields of this class, which meet two conditions: 1.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionColumnValueSelector

public ExpressionColumnValueSelector(Expr expression,
                                     Expr.ObjectBinding bindings)

Method Detail

getDouble

public double getDouble()

Specified by:

getDouble in interface BaseDoubleColumnValueSelector

getFloat

public float getFloat()

Specified by:

getFloat in interface BaseFloatColumnValueSelector

getLong

public long getLong()

Specified by:

getLong in interface BaseLongColumnValueSelector

classOfObject

public Class<ExprEval> classOfObject()

Specified by:

classOfObject in interface BaseObjectColumnValueSelector<ExprEval>

getObject

@Nonnull
public ExprEval getObject()

Specified by:

getObject in interface BaseObjectColumnValueSelector<ExprEval>

inspectRuntimeShape

public void inspectRuntimeShape(RuntimeShapeInspector inspector)

Description copied from interface: HotLoopCallee

Implementations of this method should call inspector.visit() with all fields of this class, which meet two conditions: 1. They are used in methods of this class, annotated with CalledFromHotLoop 2. They are either: a. Nullable objects b. Instances of HotLoopCallee c. Objects, which don't always have a specific class in runtime. For example, a field of type Set could be HashSet or TreeSet in runtime, depending on how this instance (the instance on which inspectRuntimeShape() is called) is configured. d. ByteBuffer or similar objects, where byte order matters e. boolean flags, affecting branch taking f. Arrays of objects, meeting any of conditions a-e.

Specified by:

inspectRuntimeShape in interface HotLoopCallee