Package org.apache.iceberg.expressions

Class Aggregate<C extends Term>

java.lang.Object

org.apache.iceberg.expressions.Aggregate<C>

All Implemented Interfaces:

Serializable, Expression

Direct Known Subclasses:

BoundAggregate, UnboundAggregate

public abstract class Aggregate<C extends Term>
extends Object
implements Expression

The aggregate functions that can be evaluated in Iceberg. Supported aggregates include Min(field), Max(field), Count(*), Count(field) and CountNull(field)

See Also:

• Serialized Form

Nested Class Summary

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

Expression.Operation

Method Summary

Modifier and Type	Method	Description
Expression.Operation	op()	Returns the operation for an expression node.
C	term()
String	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

Method Details

op

public Expression.Operation op()

Description copied from interface: Expression

Returns the operation for an expression node.

Specified by:

op in interface Expression

term

public C term()

toString

public String toString()

Overrides:

toString in class Object