org.apache.iceberg.expressions

Class MinAggregate<T>

java.lang.Object

org.apache.iceberg.expressions.Aggregate<BoundTerm<T>>

org.apache.iceberg.expressions.BoundAggregate<T,T>

org.apache.iceberg.expressions.MinAggregate<T>

All Implemented Interfaces:

java.io.Serializable, Bound<T>, Expression

public class MinAggregate<T>
extends BoundAggregate<T,T>

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.iceberg.expressions.Expression

Expression.Operation

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MinAggregate(BoundTerm<T> term)

Method Summary

Modifier and Type	Method and Description
T	eval(DataFile file)
T	eval(StructLike struct) Produce a value from the struct for this expression.
protected java.lang.Object	evaluateRef(DataFile file)
protected boolean	hasValue(DataFile file)
org.apache.iceberg.expressions.BoundAggregate.Aggregator<T>	newAggregator()

Methods inherited from class org.apache.iceberg.expressions.BoundAggregate

columnName, describe, ref, type

Methods inherited from class org.apache.iceberg.expressions.Aggregate

op, term, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.iceberg.expressions.Expression

isEquivalentTo, negate

Constructor Detail

MinAggregate

protected MinAggregate(BoundTerm<T> term)

Method Detail

hasValue

protected boolean hasValue(DataFile file)

evaluateRef

protected java.lang.Object evaluateRef(DataFile file)

newAggregator

public org.apache.iceberg.expressions.BoundAggregate.Aggregator<T> newAggregator()

eval

public T eval(StructLike struct)

Description copied from interface: Bound

Produce a value from the struct for this expression.

Specified by:

eval in interface Bound<T>

Overrides:

eval in class BoundAggregate<T,T>

Parameters:

struct - a struct of incoming data

Returns:

the value of this expression when evaluated on the incoming struct

eval

public T eval(DataFile file)