Package org.apache.druid.segment.virtual

Class RowBasedExpressionColumnValueSelector

java.lang.Object

org.apache.druid.segment.virtual.BaseExpressionColumnValueSelector

org.apache.druid.segment.virtual.RowBasedExpressionColumnValueSelector

All Implemented Interfaces:

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

public class RowBasedExpressionColumnValueSelector
extends BaseExpressionColumnValueSelector

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 Object, 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	Description
RowBasedExpressionColumnValueSelector(ExpressionPlan plan, Expr.ObjectBinding bindings, RowIdSupplier rowIdSupplier)

Method Summary

Modifier and Type	Method	Description
protected ExprEval<?>	eval()	Implementations override this.

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

classOfObject, getDouble, getFloat, getLong, getObject, inspectRuntimeShape, isNull

Methods inherited from class java.lang.Object

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

Constructor Details

RowBasedExpressionColumnValueSelector

public RowBasedExpressionColumnValueSelector(ExpressionPlan plan,
 Expr.ObjectBinding bindings,
 @Nullable
 RowIdSupplier rowIdSupplier)

Method Details

eval

protected ExprEval<?> eval()

Description copied from class: BaseExpressionColumnValueSelector

Implementations override this.

Specified by:

eval in class BaseExpressionColumnValueSelector