net.ontopia.persistence.proxy
Class Identity

java.lang.Object
  net.ontopia.persistence.proxy.Identity

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, IdentityIF

public final class Identity
extends java.lang.Object
implements IdentityIF, java.io.Externalizable

INTERNAL: Class used for representing data store object identities with more than a single key. See IdentityIF.

See Also:

Serialized Form

Constructor Summary

Identity()
INTERNAL: Constructor that is used for externalization purposes only.

Identity(java.lang.Object type, java.lang.Object[] keys)
INTERNAL: Creates an identity instance of the given type with the given keys.

Method Summary

java.lang.Object	clone()
int	computeHashCode()
java.lang.Object	createInstance() INTERNAL: Creates an object instance of the type defined by this identity.
boolean	equals(java.lang.Object object)
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.
int	hashCode()
void	readExternal(java.io.ObjectInput in)
java.lang.String	toString()
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

Identity

public Identity()

INTERNAL: Constructor that is used for externalization purposes only.

Identity

public Identity(java.lang.Object type,
                java.lang.Object[] keys)

INTERNAL: Creates an identity instance of the given type with the given keys.

Method Detail

getType

public java.lang.Object getType()

Description copied from interface: IdentityIF

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

Specified by:

getType in interface IdentityIF

getWidth

public int getWidth()

Description copied from interface: IdentityIF

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

Specified by:

getWidth in interface IdentityIF

getKey

public java.lang.Object getKey(int index)

Description copied from interface: IdentityIF

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

Specified by:

getKey in interface IdentityIF

createInstance

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

Description copied from interface: IdentityIF

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

Specified by:

createInstance in interface IdentityIF

Throws:

java.lang.Exception

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

computeHashCode

public int computeHashCode()

equals

public boolean equals(java.lang.Object object)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Specified by:

writeExternal in interface java.io.Externalizable

Throws:

java.io.IOException

readExternal

public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Specified by:

readExternal in interface java.io.Externalizable

Throws:

java.io.IOException

java.lang.ClassNotFoundException

clone

public java.lang.Object clone()

Specified by:

clone in interface IdentityIF

Overrides:

clone in class java.lang.Object