org.apache.iceberg.expressions

Class Aggregate<C extends Term>

java.lang.Object

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

All Implemented Interfaces:

java.io.Serializable, Expression

Direct Known Subclasses:

BoundAggregate, UnboundAggregate

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

The aggregate functions that can be pushed and evaluated in Iceberg. Currently only three aggregate functions Max, Min and Count are supported.

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 and Description
Expression.Operation	op() Returns the operation for an expression node.
C	term()
java.lang.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 Detail

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 java.lang.String toString()

Overrides:

toString in class java.lang.Object