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(Expr expression, Expr.BindingDetails baseExprBindingDetails, Expr.ObjectBinding bindings, Set<String> unknownColumnsSet)

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(Expr expression,
                                             Expr.BindingDetails baseExprBindingDetails,
                                             Expr.ObjectBinding bindings,
                                             Set<String> unknownColumnsSet)

Method Detail

getObject

public ExprEval getObject()

Specified by:

getObject in interface BaseObjectColumnValueSelector<ExprEval>

Overrides:

getObject in class ExpressionColumnValueSelector