org.apache.ode.utils.stl

Class MemberOfFunction<E>

java.lang.Object

org.apache.ode.utils.stl.MemberOfFunction<E>

All Implemented Interfaces:

UnaryFunction<E,java.lang.Boolean>, UnaryFunctionEx<E,java.lang.Boolean>

Direct Known Subclasses:

EqualsUnaryFunction, MemberOfFunction.InstanceOf

public abstract class MemberOfFunction<E>
extends java.lang.Object
implements UnaryFunction<E,java.lang.Boolean>

Interface used for defining object filters/selectors, classes that are used to determine whether a given object belong in a set.

Created on Feb 4, 2004 at 4:48:55 PM.

Author:

Maciej Szefler mbs

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MemberOfFunction.InstanceOf

Constructor Summary

Constructors

Constructor and Description
MemberOfFunction()

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.Boolean	apply(E x) Implementation of UnaryFunction method defering to #isMember(E).
abstract boolean	isMember(E o) A unary function that tests whether an element is the member of a set.

Methods inherited from class java.lang.Object

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

Constructor Detail

MemberOfFunction

public MemberOfFunction()

Method Detail

isMember

public abstract boolean isMember(E o)

A unary function that tests whether an element is the member of a set.

Parameters:

o - element to test

Returns:

true if element is a member

apply

public final java.lang.Boolean apply(E x)

Implementation of UnaryFunction method defering to #isMember(E).

Specified by:

apply in interface UnaryFunction<E,java.lang.Boolean>

Specified by:

apply in interface UnaryFunctionEx<E,java.lang.Boolean>

Parameters:

x - element to test

Returns:

Boolean.TRUE if isMemeber returns true, false otherwise