com.bigdata.btree

Interface IIdentityAccess

All Known Implementing Classes:

AbstractNode, IndexSegment.ImmutableNodeFactory.ImmutableLeaf, IndexSegment.ImmutableNodeFactory.ImmutableNode, Leaf, Node, PO

public interface IIdentityAccess

An interface that declares how we access the persistent identity of an object.

Version:

$Id$

Author:

Bryan Thompson

Field Summary

Fields

Modifier and Type	Field and Description
static long	NULL Null reference for the store (zero).

Method Summary

Methods

Modifier and Type	Method and Description
void	delete() Deletes the persistence capable object.
long	getIdentity() The persistent identity.
boolean	isDeleted() True iff an object has been logically deleted.
boolean	isPersistent() True iff the object is persistent.

Field Detail

NULL

static final long NULL

Null reference for the store (zero).

See Also:

Constant Field Values

Method Detail

getIdentity

long getIdentity()
                 throws IllegalStateException

The persistent identity.

Throws:

IllegalStateException - if the object is not persistent.

isPersistent

boolean isPersistent()

True iff the object is persistent.

isDeleted

boolean isDeleted()

True iff an object has been logically deleted.

delete

void delete()
            throws IllegalStateException

Deletes the persistence capable object. Both transient and persistent objects may be logically deleted. If the object is persistent then its space on the store is deallocated.

Throws:

IllegalStateException - if the object is already deleted.