/**
 * @license
 * Copyright 2013 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package foam.dao;

import java.util.Comparator;

import foam.core.Expression;
import foam.core.FObject;

public interface Index {

  public Object put(Object state, FObject value);

  public Object remove(Object state, FObject value);
  
  public Plan plan(Object state, Sink sink, Expression<Boolean> p, Comparator c, long skip, long limit);

  public long size(Object state);

}