org.apache.iceberg.expressions

Class True

java.lang.Object

org.apache.iceberg.expressions.True

All Implemented Interfaces:

java.io.Serializable, Expression

public class True
extends java.lang.Object
implements Expression

An expression that is always true.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.iceberg.expressions.Expression

Expression.Operation

Method Summary

Modifier and Type	Method and Description
boolean	isEquivalentTo(Expression other) Returns whether this expression will accept the same values as another.
Expression	negate() Returns the negation of this expression, equivalent to not(this).
Expression.Operation	op() Returns the operation for an expression node.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

op

public Expression.Operation op()

Description copied from interface: Expression

Returns the operation for an expression node.

Specified by:

op in interface Expression

negate

public Expression negate()

Description copied from interface: Expression

Returns the negation of this expression, equivalent to not(this).

Specified by:

negate in interface Expression

isEquivalentTo

public boolean isEquivalentTo(Expression other)

Description copied from interface: Expression

Returns whether this expression will accept the same values as another.

If this returns true, the expressions are guaranteed to return the same evaluation for the same input. However, if this returns false the expressions may return the same evaluation for the same input. That is, expressions may be equivalent even if this returns false.

For best results, rewrite not and bind expressions before calling this method.

Specified by:

isEquivalentTo in interface Expression

Parameters:

other - another expression

Returns:

true if the expressions are equivalent

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object