gecko-dev/grendel/storage/intertwingle/DB.java

48 строки
1.5 KiB
Java

/* -*- Mode: java; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is the Grendel mail/news client.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1997 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Created: Terry Weissman <terry@netscape.com>, 26 Sep 1997.
*/
package grendel.storage.intertwingle;
import java.io.IOException;
import java.util.Enumeration;
/** An interface to a RDF-ish database. */
public interface DB {
public void assert(String name, String slot, String value)
throws IOException;
public void unassert(String name, String slot, String value)
throws IOException;
public String findFirst(String name, String slot, boolean reverse)
throws IOException;
public Enumeration findAll(String name, String slot, boolean reverse)
throws IOException;
public boolean isAsserted(String name, String slot, String value)
throws IOException;
};