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/*
 Copyright 2013 Red Hat, Inc. and/or its affiliates.

 This file is part of lightblue.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program 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 General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program.  If not, see .
 */
package com.redhat.lightblue.crud;

import java.util.Iterator;
import java.util.ArrayList;
import java.util.function.Function;
import java.util.function.Consumer;

/**
 * A document stream than can be rewound
 */
public interface RewindableDocumentStream extends DocumentStream {
    
    /**
     * returns a new stream that starts the same resultset from the beginning. Only works if canRewind() is true
     */
    RewindableDocumentStream rewind();

    static class RewindableDocumentStreamMapper extends DocumentStream.DocumentStreamMapper
        implements RewindableDocumentStream {
        RewindableDocumentStreamMapper(RewindableDocumentStream source,Function map) {
            super(source,map);
        }
        @Override
        public RewindableDocumentStream rewind() {
            return new RewindableDocumentStreamMapper(((RewindableDocumentStream)source).rewind(),map);
        }
    }

}