Subversion Repositories mkgmap

/*
 * Copyright (C) 2013
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License 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.osmstyle.actions;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public abstract class ValueBuildedAction implements Action {

        private final List<ValueBuilder> valueBuilder = new ArrayList<ValueBuilder>();

        /**
         * Adds a value building rule.
         * @param val rule
         */
        public void add(String val) {
                valueBuilder.add(new ValueBuilder(val));
        }

        /**
         * Retrieve the tags that might be used to build the value.
         * @return all required tags
         */
        public Set<String> getUsedTags() {
                Set<String> set = new HashSet<String>();
                for (ValueBuilder vb : valueBuilder) {
                        set.addAll(vb.getUsedTags());
                }
                return set;
        }

        /**
         * Retrieves the list of value builders.
         * @return value builders
         */
        protected List<ValueBuilder> getValueBuilder() {
                return valueBuilder;
        }
}