org.apache.druid.segment.virtual

Class RowBasedExpressionColumnValueSelector

java.lang.Object

org.apache.druid.segment.virtual.ExpressionColumnValueSelector

org.apache.druid.segment.virtual.RowBasedExpressionColumnValueSelector

All Implemented Interfaces:

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

public class RowBasedExpressionColumnValueSelector
extends ExpressionColumnValueSelector

Expression column value selector that examines a set of 'unknown' type input bindings on a row by row basis, transforming the expression to handle multi-value list typed inputs as they are encountered. Currently, string dimensions are the only bindings which might appear as a String or a String[], so numbers are eliminated from the set of 'unknown' bindings to check as they are encountered.

Field Summary

Fields inherited from interface org.apache.druid.segment.ColumnValueSelector

EMPTY_ARRAY

Constructor Summary

Constructors

Constructor and Description
RowBasedExpressionColumnValueSelector(ExpressionPlan plan, Expr.ObjectBinding bindings)

Method Summary

Modifier and Type	Method and Description
ExprEval	getObject()

Methods inherited from class org.apache.druid.segment.virtual.ExpressionColumnValueSelector

classOfObject, getDouble, getFloat, getLong, inspectRuntimeShape, isNull

Methods inherited from class java.lang.Object

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

Constructor Detail

RowBasedExpressionColumnValueSelector

public RowBasedExpressionColumnValueSelector(ExpressionPlan plan,
                                             Expr.ObjectBinding bindings)

Method Detail

getObject

public ExprEval getObject()

Specified by:

getObject in interface BaseObjectColumnValueSelector<ExprEval>

Overrides:

getObject in class ExpressionColumnValueSelector