Package org.apache.iceberg.expressions

Class BoundReference<T>

java.lang.Object

org.apache.iceberg.expressions.BoundReference<T>

All Implemented Interfaces:

Serializable, Bound<T>, BoundTerm<T>, Reference<T>, Term

public class BoundReference<T>
extends Object
implements BoundTerm<T>, Reference<T>

See Also:

• Serialized Form

Method Summary

Modifier and Type	Method	Description
Accessor<StructLike>	accessor()
T	eval(StructLike struct)	Produce a value from the struct for this expression.
Types.NestedField	field()
int	fieldId()
boolean	isEquivalentTo(BoundTerm<?> other)	Returns whether this term is equivalent to another.
String	name()
boolean	producesNull()	Returns whether values produced by this expression may be null.
BoundReference<T>	ref()	Returns the underlying reference.
String	toString()
Type	type()	Returns the type produced by this expression.

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.BoundTerm

comparator

Method Details

eval

public T eval(StructLike struct)

Description copied from interface: Bound

Produce a value from the struct for this expression.

Specified by:

eval in interface Bound<T>

Parameters:

struct - a struct of incoming data

Returns:

the value of this expression when evaluated on the incoming struct

field

public Types.NestedField field()

ref

public BoundReference<T> ref()

Description copied from interface: Bound

Returns the underlying reference.

Specified by:

ref in interface Bound<T>

type

public Type type()

Description copied from interface: BoundTerm

Returns the type produced by this expression.

Specified by:

type in interface BoundTerm<T>

producesNull

public boolean producesNull()

Description copied from interface: BoundTerm

Returns whether values produced by this expression may be null.

Specified by:

producesNull in interface BoundTerm<T>

name

public String name()

Specified by:

name in interface Reference<T>

isEquivalentTo

public boolean isEquivalentTo(BoundTerm<?> other)

Description copied from interface: BoundTerm

Returns whether this term is equivalent to another.

Specified by:

isEquivalentTo in interface BoundTerm<T>

Parameters:

other - a term

Returns:

true if this term returns the same values as the other, false otherwise

fieldId

public int fieldId()

accessor

public Accessor<StructLike> accessor()

toString

public String toString()

Overrides:

toString in class Object