container-search/src/main/java/com/yahoo/search/grouping/Continuation.java


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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.grouping;

import com.yahoo.search.grouping.vespa.ContinuationDecoder;

/**
 * <p>This class represents a piece of data stored by the grouping framework within a grouping result, which can
 * subsequently be sent back along with the original request to navigate across a large result set. It is an opaque
 * data object that is not intended to be human readable.</p>
 *
 * <p>To render a Cookie within a result set, you simply need to call {@link #toString()}.</p>
 *
 * @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen</a>
 */
public abstract class Continuation {

    public static final String NEXT_PAGE = "next";
    public static final String PREV_PAGE = "prev";
    public static final String THIS_PAGE = "this";

    public static Continuation fromString(String str) {
        return ContinuationDecoder.decode(str);
    }
}