Subversion Repositories mkgmap

package uk.me.parabola.mkgmap.reader.osm;

import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * Represent a Relation.
 *
 * @author Rene_A
 */
public abstract class Relation extends Element {
        private final List<Map.Entry<String,Element>> elements = new ArrayList<Map.Entry<String,Element>>();

        /**
         * Add a (role, Element) pair to this Relation.
         * @param role The role this element performs in this relation
         * @param el The Element added
         */
        public void addElement(String role, Element el) {
                elements.add(new AbstractMap.SimpleEntry<String,Element>(role, el));
        }

        /** Invoked after addElement() has been invoked on all Node and Way
         * members of the relations.  Relation members (sub-relations) may be
         * added later. */
        public abstract void processElements();

        /** Get the ordered list of relation members.
         * @return list of pairs of (role, Element)
         */
        public List<Map.Entry<String,Element>> getElements() {
                return elements;
        }

        public String kind() {
                return "relation";
        }
}