UnboundAggregate

java.lang.Object
- org.apache.iceberg.expressions.Aggregate<UnboundTerm<T>>
- - org.apache.iceberg.expressions.UnboundAggregate<T>

All Implemented Interfaces:

java.io.Serializable, Expression, Unbound<T,Expression>
```
public class UnboundAggregate<T>
extends Aggregate<UnboundTerm<T>>
implements Unbound<T,Expression>
```
See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from interface org.apache.iceberg.expressions.Expression
  Expression.Operation

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Expression`	`bind(Types.StructType struct, boolean caseSensitive)`	Bind this UnboundAggregate.
`NamedReference<?>`	`ref()`	Returns this expression's underlying reference.

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

- Method Detail
  - ref
```
public NamedReference<?> ref()
```
    Description copied from interface: Unbound
    
    Returns this expression's underlying reference.
    
    Specified by:
    
    ref in interface Unbound<T,Expression>
  - bind
```
public Expression bind(Types.StructType struct,
                       boolean caseSensitive)
```
    Bind this UnboundAggregate.
    
    Specified by:
    
    bind in interface Unbound<T,Expression>
    
    Parameters:
    
    struct - The struct type to resolve references by name.
    
    caseSensitive - A boolean flag to control whether the bind should enforce case sensitivity.
    
    Returns:
    
    an Expression
    
    Throws:
    
    ValidationException - if literals do not match bound references, or if comparison on expression is invalid