org.apache.iceberg.expressions

Class BoundTransform<S,T>

java.lang.Object

org.apache.iceberg.expressions.BoundTransform<S,T>

Type Parameters:

S - the Java type of values transformed by this function.

T - the Java type of values returned by the function.

All Implemented Interfaces:

java.io.Serializable, Bound<T>, BoundTerm<T>, Term

public class BoundTransform<S,T>
extends java.lang.Object
implements BoundTerm<T>

A transform expression.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
T	eval(StructLike struct) Produce a value from the struct for this expression.
boolean	isEquivalentTo(BoundTerm<?> other) Returns whether this term is equivalent to another.
BoundReference<S>	ref() Returns the underlying reference.
java.lang.String	toString()
Transform<S,T>	transform()
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 Detail

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

ref

public BoundReference<S> ref()

Description copied from interface: Bound

Returns the underlying reference.

Specified by:

ref in interface Bound<T>

transform

public Transform<S,T> transform()

type

public Type type()

Description copied from interface: BoundTerm

Returns the type produced by this expression.

Specified by:

type in interface BoundTerm<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

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object