com.espertech.esper.collection

Class MultiKey<T>

java.lang.Object

com.espertech.esper.collection.MultiKey<T>

public final class MultiKey<T>
extends Object

Functions as a key value for Maps where keys need to be composite values. The class allows a Map that uses MultiKeyUntyped entries for key values to use multiple objects as keys. It calculates the hashCode from the key objects on construction and caches the hashCode.

Constructor Summary

Constructors

Constructor and Description
MultiKey(T[] keys) Constructor for multiple keys supplied in an object array.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object other)
T	get(int index) Returns the key object at the specified position.
T[]	getArray() Returns the key value array.
int	hashCode()
int	size() Returns the number of key objects.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiKey

public MultiKey(T[] keys)

Constructor for multiple keys supplied in an object array.

Parameters:

keys - is an array of key objects

Method Detail

size

public final int size()

Returns the number of key objects.

Returns:

size of key object array

get

public final T get(int index)

Returns the key object at the specified position.

Parameters:

index - is the array position

Returns:

key object at position

equals

public final boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public final int hashCode()

Overrides:

hashCode in class Object

toString

public final String toString()

Overrides:

toString in class Object

getArray

public final T[] getArray()

Returns the key value array.

Returns:

key value array