com.bigdata.relation.rule
Interface IVariableOrConstant<E>

All Superinterfaces:

Serializable

All Known Subinterfaces:

IConstant<E>, IVariable<E>

All Known Implementing Classes:

Constant, Var

public interface IVariableOrConstant<E>
extends Serializable

Abstraction models either a constant or an unbound variable.

Version:

$Id: IVariableOrConstant.java 2265 2009-10-26 12:51:06Z thompsonbry $

Author:

Bryan Thompson

Method Summary

boolean	equals(IVariableOrConstant<E> o) Return true if this is the same variable or if both values are Constant whose values are the same.
E	get() Return the bound value.
String	getName() Return the name of a variable.
boolean	isConstant() Return true iff this is a constant.
boolean	isVar() Return true iff this is a variable.

Method Detail

isVar

boolean isVar()

Return true iff this is a variable.

isConstant

boolean isConstant()

Return true iff this is a constant.

equals

boolean equals(IVariableOrConstant<E> o)

Return true if this is the same variable or if both values are Constant whose values are the same.

get

E get()

Return the bound value.

Throws:

UnsupportedOperationException - if this is a variable.

getName

String getName()

Return the name of a variable.

Throws:

UnsupportedOperationException - if this is not a variable.