org.helidb.backend
Interface DatabaseBackendFactory<K,V,P>

Type Parameters:

K - The type of the keys in the database.

V - The type of the values in the database.

P - The type of positions in the database.

All Known Implementing Classes:

BPlusTreeIndexBackendFactory, ConstantRecordSizeBPlusTreeBackendFactory, ConstantRecordSizeHeapBackendFactory, HeapBackendFactory, LruCacheBackendFactory

public interface DatabaseBackendFactory<K,V,P>

This interface defines a factory for database backend objects. Some database implementations, for instance the shadow copy transactional database, use backend factories to create new backend objects when they need to.

Since:

1.0

Author:

Karl Gustafsson

See Also:

ShadowCopyTransactionalDatabase

In_jar:

helidb-core

Method Summary

DatabaseBackend<K,V,P>

create(DatabaseFiles f, boolean readOnly) Create a new backend for the supplied file.

Method Detail

create

DatabaseBackend<K,V,P> create(DatabaseFiles f,
                              boolean readOnly)

Create a new backend for the supplied file.

Parameters:

f - The file(s) containing the database data. The implementation of this method should be able to assume a specific DatabaseFiles implementation. Which depends on the implementation of the database backend to create.

readOnly - Should the backend object be created read only?

Returns:

A new database backend object.