Package com.espertech.esper.common.client.util

Class HashableMultiKey

java.lang.Object

com.espertech.esper.common.client.util.HashableMultiKey

All Implemented Interfaces:

MultiKey, Serializable

public final class HashableMultiKey
extends Object
implements Serializable, MultiKey

Multi-key made up of multiple values providing hashcode and equals semantics using Object.hashCode() and Arrays.equals(Object[], Object[])

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final EPTypeClass	EPTYPE	Type information

Constructor Summary

Constructors

Constructor	Description
HashableMultiKey(Object key)	Constructor for a single key object.
HashableMultiKey(Object[] keys)	Constructor for multiple keys supplied in an object array.
HashableMultiKey(Object key1, Object key2)	Constructor for a pair of key objects.
HashableMultiKey(Object key1, Object key2, Object key3)	Constructor for three key objects.
HashableMultiKey(Object key1, Object key2, Object key3, Object key4)	Constructor for four key objects.

Method Summary

Modifier and Type	Method	Description
final boolean	equals(Object other)
final Object	get(int index)	Returns the key object at the specified position.
Object	getKey(int num)	Returns the key value at the given index
Object[]	getKeys()	Returns keys.
int	getNumKeys()	Returns the number of keys available
final int	hashCode()
final int	size()	Returns the number of key objects.
final String	toString()

Methods inherited from class java.lang.Object

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

Field Details

EPTYPE

public static final EPTypeClass EPTYPE

Type information

Constructor Details

HashableMultiKey

public HashableMultiKey(Object[] keys)

Constructor for multiple keys supplied in an object array.

Parameters:

keys - is an array of key objects

HashableMultiKey

public HashableMultiKey(Object key)

Constructor for a single key object.

Parameters:

key - is the single key object

HashableMultiKey

public HashableMultiKey(Object key1,
 Object key2)

Constructor for a pair of key objects.

Parameters:

key1 - is the first key object

key2 - is the second key object

HashableMultiKey

public HashableMultiKey(Object key1,
 Object key2,
 Object key3)

Constructor for three key objects.

Parameters:

key1 - is the first key object

key2 - is the second key object

key3 - is the third key object

HashableMultiKey

public HashableMultiKey(Object key1,
 Object key2,
 Object key3,
 Object key4)

Constructor for four key objects.

Parameters:

key1 - is the first key object

key2 - is the second key object

key3 - is the third key object

key4 - is the fourth key object

Method Details

size

public final int size()

Returns the number of key objects.

Returns:

size of key object array

get

public final Object 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

getNumKeys

public int getNumKeys()

Description copied from interface: MultiKey

Returns the number of keys available

Specified by:

getNumKeys in interface MultiKey

Returns:

number of keys

getKey

public Object getKey(int num)

Description copied from interface: MultiKey

Returns the key value at the given index

Specified by:

getKey in interface MultiKey

Parameters:

num - key number

Returns:

key value

getKeys

public Object[] getKeys()

Returns keys.

Returns:

keys object array

hashCode

public final int hashCode()

Overrides:

hashCode in class Object

toString

public final String toString()

Overrides:

toString in class Object