org.helidb.backend.heap
Class HeapBackendFactory<K,V>

java.lang.Object
  org.helidb.backend.heap.HeapBackendFactory<K,V>

Type Parameters:

K - The type of the keys in the database.

V - The type of the values in the database.

All Implemented Interfaces:

DatabaseBackendFactory<K,V,Long>

public class HeapBackendFactory<K,V>
extends Object
implements DatabaseBackendFactory<K,V,Long>

This is a DatabaseBackendFactory for creating HeapBackend objects. objects.

Since:

1.0

Author:

Karl Gustafsson

In_jar:

helidb-core

Constructor Summary

HeapBackendFactory(Serializer<K> keySerializer, Serializer<V> valueSerializer, LogAdapterHolder lah)
Create a new factory.

Method Summary

HeapBackend<K,V>

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

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HeapBackendFactory

public HeapBackendFactory(Serializer<K> keySerializer,
                          Serializer<V> valueSerializer,
                          LogAdapterHolder lah)
                   throws NullPointerException

Create a new factory.

Parameters:

keySerializer - The key serializer. This instance will be reused by all backend objects created by this factory.

valueSerializer - The value serializer. This instance will be reused by all backend object created by this factory.

lah - A log adapter holder.

Throws:

NullPointerException - If any of the parameters is null.

Method Detail

create

public HeapBackend<K,V> create(DatabaseFiles f,
                               boolean readOnly)

Description copied from interface: DatabaseBackendFactory

Create a new backend for the supplied file.

Specified by:

create in interface DatabaseBackendFactory<K,V,Long>

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.