eTextReader.authentication
Class CompoundPolicy

java.lang.Object
  eTextReader.authentication.CompoundPolicy

All Implemented Interfaces:

PasswordPolicy

public class CompoundPolicy
extends java.lang.Object
implements PasswordPolicy

This class provides a mechanism by which two or more other PasswordPolicy implementations can be combined using a Boolean AND operation. An object of this class will accept any password that is accepted by all of its component policy implementations.

Two constructors are provided: one that joins together exactly 2 other PasswordPolicy objects, and one that accepts a List of PasswordPolicy objects.

Author:

mcfall

Field Summary

private java.util.List<PasswordPolicy>

policies

Constructor Summary

CompoundPolicy(java.util.List<PasswordPolicy> policies)

CompoundPolicy(PasswordPolicy policy1, PasswordPolicy policy2)
Constructs a CompoundPolicy that combines two other policy objects.

Method Summary

java.lang.String	getDescription() Retrieves a human-readable description of the rules this policy enforces
boolean	isValid(java.lang.String password) Determines whether or not the given password is valid under this policy

Methods inherited from class java.lang.Object

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

Field Detail

policies

private java.util.List<PasswordPolicy> policies

Constructor Detail

CompoundPolicy

public CompoundPolicy(PasswordPolicy policy1,
                      PasswordPolicy policy2)

Constructs a CompoundPolicy that combines two other policy objects.

The order that the policies are passed is generally not relevant. The only case in which the order by matter is if one of the policies is more computationally expensive. The first policy passed will be evaluated first if this is of concern to you.

Note that since CompoundPolicy implements PasswordPolicy, either or both of the parameters may themselves be CompoundPolicy objects.

Parameters:

policy1 - the first policy to be evaluated

policy2 - the second policy to be evaluated

CompoundPolicy

public CompoundPolicy(java.util.List<PasswordPolicy> policies)

Method Detail

getDescription

public java.lang.String getDescription()

Description copied from interface: PasswordPolicy

Retrieves a human-readable description of the rules this policy enforces

Specified by:

getDescription in interface PasswordPolicy

Returns:

a string describing the policy rules

isValid

public boolean isValid(java.lang.String password)

Description copied from interface: PasswordPolicy

Determines whether or not the given password is valid under this policy

Specified by:

isValid in interface PasswordPolicy

Parameters:

password - the password to check

Returns:

true if the given password is valid, false otherwise