Subversion Repositories mkgmap

/*
 * Copyright (C) 2010.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 or
 * version 2 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.mkgmap.reader.osm;

/**
 * At the top level we need to be able to watch to see if a result was found
 * to implement stop-on-first-match, continue and the like.
 *
 * @author Steve Ratcliffe
 */
public class WatchableTypeResult implements TypeResult {
        private boolean actionsOnly;
        private boolean found;
        private boolean continued;
        private int count;

        private final TypeResult result;

        public WatchableTypeResult(TypeResult result) {
                this.result = result;
        }

        public void add(Element el, GType type) {
                if (type == null) {
                        actionsOnly = true;
                        return;
                }
               
                if (type.isContinueSearch())
                        continued = true;

                count++;
                found = true;
                result.add(el, type);
        }

        /**
         * Was a result found.
         * @return True if one or more results were added since the last reset.
         */
        public boolean isFound() {
                return found;
        }

        /**
         * Are we all done for this element?
         * @return True if we found a matching type and it did not have the continue
         * flag set.
         */
        public boolean isResolved() {
                return found && !continued;
        }

        public boolean isActionsOnly() {
                return actionsOnly;
        }

        /**
         * Reset the watcher for the next element.
         */
        public void reset() {
                count = 0;
                actionsOnly = false;
                continued = false;
                found = false;
        }
}