Package org.apache.iceberg.expressions
Class Aggregate<C extends Term>
- java.lang.Object
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- org.apache.iceberg.expressions.Aggregate<C>
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- 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
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.apache.iceberg.expressions.Expression
Expression.Operation
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Expression.Operation
op()
Returns the operation for an expression node.C
term()
java.lang.String
toString()
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.apache.iceberg.expressions.Expression
isEquivalentTo, negate
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Method Detail
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op
public Expression.Operation op()
Description copied from interface:Expression
Returns the operation for an expression node.- Specified by:
op
in interfaceExpression
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term
public C term()
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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