er.extensions
Class ERXMultiKey

java.lang.Object
  er.extensions.ERXMultiKey

public class ERXMultiKey

extends Object

Simple class to use multiple objects as a single key for a dictionary or HashMap. The goal of this class is to be very fast.

Constructor Summary

ERXMultiKey()
Constructs a multi-key.

ERXMultiKey(NSArray keys)
Constructs a multi-key for a given array.

ERXMultiKey(Object[] keys)
Constructs a multi-key for a given object array.

ERXMultiKey(short keyCount)
Constructs a multi-key for a given number.

ERXMultiKey(Vector keys)
Constructs a multi-key for a given vector.

Method Summary

boolean	equals(Object o) Method used to compare two ERXMultiKeys.
int	hashCode() Calculates a unique hash code for the given array of keys.
Object[]	keys() Method used to return the object array of keys for the current multi-key.
String	toString() String representation of the multi-key.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ERXMultiKey

public ERXMultiKey(short keyCount)

Constructs a multi-key for a given number.

Parameters:

keyCount - number of keys

ERXMultiKey

public ERXMultiKey()

Constructs a multi-key.

ERXMultiKey

public ERXMultiKey(Object[] keys)

Constructs a multi-key for a given object array.

Parameters:

keys - object array

ERXMultiKey

public ERXMultiKey(NSArray keys)

Constructs a multi-key for a given array.

Parameters:

keys - array of keys

ERXMultiKey

public ERXMultiKey(Vector keys)

Constructs a multi-key for a given vector.

Parameters:

keys - vector of keys

Method Detail

keys

public final Object[] keys()

Method used to return the object array of keys for the current multi-key.

Returns:

object array of keys

hashCode

public final int hashCode()

Calculates a unique hash code for the given array of keys.

Returns:

unique hash code for the array of keys.

equals

public final boolean equals(Object o)

Method used to compare two ERXMultiKeys. A multi key is equal to another multi key if the number of keys are equal and all of the keys are either both null or equals.

Parameters:

o - object to be compared

Returns:

result of comparison

toString

public String toString()

String representation of the multi-key.

Returns:

string representation of key.