org.apache.hudi.source

Class ExpressionEvaluators.IsNull

java.lang.Object

org.apache.hudi.source.ExpressionEvaluators.LeafEvaluator

org.apache.hudi.source.ExpressionEvaluators.IsNull

All Implemented Interfaces:

Serializable, ExpressionEvaluators.Evaluator

Enclosing class:

ExpressionEvaluators

public static class ExpressionEvaluators.IsNull
extends ExpressionEvaluators.LeafEvaluator

To evaluate IS NULL expr.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.hudi.source.ExpressionEvaluators.LeafEvaluator

index, name, type

Constructor Summary

Constructors

Constructor and Description
IsNull()

Method Summary

Modifier and Type	Method and Description
boolean	eval(Map<String,ColumnStats> columnStatsMap) Evaluates whether it's possible to match based on the column stats.
static ExpressionEvaluators.IsNull	getInstance()

Methods inherited from class org.apache.hudi.source.ExpressionEvaluators.LeafEvaluator

bindFieldReference, getColumnStats

Methods inherited from class java.lang.Object

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

Constructor Detail

IsNull

public IsNull()

Method Detail

getInstance

public static ExpressionEvaluators.IsNull getInstance()

eval

public boolean eval(Map<String,ColumnStats> columnStatsMap)

Description copied from interface: ExpressionEvaluators.Evaluator

Evaluates whether it's possible to match based on the column stats.

Parameters:

columnStatsMap - column statistics

Returns:

false if there is no any possible to match, true otherwise.