Subversion Repositories splitter

/*
 * Copyright (c) 2009, Chris Miller
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 *
 * 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.
 */

package uk.me.parabola.splitter;

import java.util.concurrent.BlockingQueue;

public interface MapProcessor {

        /**
         * (performance) Returns true if the reader is allowed to ignore tags
         * while reading OSM data
         */
       
        boolean skipTags();
        /**
         * (performance) Returns true if the reader is allowed to skip nodes
         * while reading OSM data
         */
        boolean skipNodes();

        /**
         * (performance) Returns true if the reader is allowed to skip ways
         * while reading OSM data
         */
        boolean skipWays();
        /**
         * (performance) Returns true if the reader is allowed to skip relations
         * while reading OSM data
         */
        boolean skipRels();

        /**
         * returns a value that identifies the current phase
         * @return
         */
        int getPhase();

        /**
         * Called when the bound tag is encountered. Note that it is possible
         * for this to be called multiple times, eg if there are multiple OSM
         * files provided as input.
         * @param bounds the area covered by the map.
         */
        void boundTag(OsmBounds osmBounds);


        /**
         * Called when a whole node has been processed.
        */
        void processNode(Node n);

        /**
         * Called when a whole way has been processed.
        */
        void processWay(Way w);
       
        /**
         * Called when a whole relation has been processed.
        */
        void processRelation(Relation r);


        /**
         * Called when all input files were processed,
         * it returns false to signal that the same instance of the processor
         * should be called again with a new reader for all these input files.
         */
        boolean endMap();
       
        /**
         * For use with the producer/consumer pattern
         * @param queue
         * @return
         */
        boolean consume(BlockingQueue<OSMMessage> queue);
       
        /**
         * Called for each single input file
         */
        void startFile();
       
}