package edu.berkeley.lipstick.backend;
import edu.berkeley.lipstick.util.DataWrapper;
import java.util.Set;
public interface IExplicitBackend {
public void open() throws Exception;
public void close() throws Exception;
public DataWrapper get(String key) throws Exception;
public DataWrapper put_at_start(String key, Object value) throws Exception;
public DataWrapper put_after(String key, Object value, DataWrapper after) throws Exception;
public DataWrapper put_after(String key, Object value, Set<DataWrapper> after) throws Exception;
}