net.ontopia.persistence.proxy
Interface IdentityIF

All Superinterfaces:

java.lang.Cloneable

All Known Implementing Classes:

AtomicIdentity, Identity, LongIdentity, WrappedIdentity

public interface IdentityIF
extends java.lang.Cloneable

INTERNAL: Interface used to represent data store object identity. The identity has two parts; the type of object and an ordered list of primary key components. Note that an identity instance should always be immutable. Warning: Implementations of this class must all have the same hashCode() behaviour.

Method Summary

java.lang.Object	clone()
java.lang.Object	createInstance() INTERNAL: Creates an object instance of the type defined by this identity.
java.lang.Object	getKey(int index) INTERNAL: Returns the primary key component with the specified index.
java.lang.Object	getType() INTERNAL: Returns the type of object.
int	getWidth() INTERNAL: Returns the number of primary key components that the identity has.

Method Detail

getType

java.lang.Object getType()

INTERNAL: Returns the type of object. The returned value indicates the classification of the identified object. See also PersistentIF._p_getType().

getWidth

int getWidth()

INTERNAL: Returns the number of primary key components that the identity has.

getKey

java.lang.Object getKey(int index)

INTERNAL: Returns the primary key component with the specified index.

createInstance

java.lang.Object createInstance()
                                throws java.lang.Exception

INTERNAL: Creates an object instance of the type defined by this identity.

Throws:

java.lang.Exception

clone

java.lang.Object clone()