/*
* Copyright (c) [2016] [ <ether.camp> ]
* This file is part of the ethereumJ library.
*
* The ethereumJ library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ethereumJ library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>.
*/
package org.ethereum.datasource;
import java.util.Set;
/**
* Interface represents DB source which is normally the final Source in the chain
*/
public interface DbSource<V> extends BatchSource<byte[], V> {
/**
* Sets the DB name.
* This could be the underlying DB table/dir name
*/
void setName(String name);
/**
* @return DB name
*/
String getName();
/**
* Initializes DB (open table, connection, etc)
*/
void init();
/**
* @return true if DB connection is alive
*/
boolean isAlive();
/**
* Closes the DB table/connection
*/
void close();
/**
* @return DB keys if this option is available
* @throws RuntimeException if the method is not supported
*/
Set<byte[]> keys() throws RuntimeException;
}