org.hypergraphdb

Interface HGHandle

All Known Subinterfaces:

HGLiveHandle, HGManagedLiveHandle, HGPersistentHandle

All Known Implementing Classes:

DefaultLiveHandle, DefaultManagedLiveHandle, IntPersistentHandle, LongPersistentHandle, PhantomHandle, PhantomManagedHandle, UUIDPersistentHandle, WeakHandle, WeakManagedHandle

public interface HGHandle

A HGHandle represents a reference to a hypergraph atom. HyperGraph references are completely managed by HyperGraphDB and should be treated by applications as abstract reference types.

A handle holds the system-level identity of an atom. HyperGraphDB will return concrete implementations of this interface depending on configuration, context of usage and similar considerations. In other words, a handle is essentially a reference token. One can think of a handle as a memory location, or simply a unique identifier.

Generally, handles are only valid during the run-time of a system. To obtain a permanent handle, one which transcends system startup and shutdown, the HyperGraph.getPersistentHandle method should be used. Persistent handles are generated by a HGHandleFactory configured when the database is open.

Author:

Borislav Iordanov

Method Summary

Methods

Modifier and Type	Method and Description
HGPersistentHandle	getPersistent()

Method Detail

getPersistent

HGPersistentHandle getPersistent()