Unbound

Type Parameters:

T - the Java type of values produced by this node

B - the Java type produced when this node is bound using bind(Types.StructType, boolean)

All Known Subinterfaces:

UnboundTerm<T>

All Known Implementing Classes:

NamedReference, UnboundAggregate, UnboundPredicate, UnboundTransform
```
public interface Unbound<T,B>
```
Represents an unbound expression node.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`B`	`bind(Types.StructType struct, boolean caseSensitive)`	Bind this value expression to concrete types.
`NamedReference<?>`	`ref()`	Returns this expression's underlying reference.

- Method Detail
  - bind
```
B bind(Types.StructType struct,
       boolean caseSensitive)
```
    Bind this value expression to concrete types.
    
    Parameters:
    
    struct - input data types
    
    caseSensitive - whether binding should match columns using case sensitive resolution
    
    Returns:
    
    a bound value expression
  - ref
```
NamedReference<?> ref()
```
    Returns this expression's underlying reference.