    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     * contributor license agreements.  See the NOTICE file distributed with
    004     * this work for additional information regarding copyright ownership.
    005     * The ASF licenses this file to You under the Apache License, Version 2.0
    006     * (the "License"); you may not use this file except in compliance with
    007     * the License.  You may obtain a copy of the License at
    008     *
    009     *     http://www.apache.org/licenses/LICENSE-2.0
    010     *
    011     * Unless required by applicable law or agreed to in writing, software
    012     * distributed under the License is distributed on an "AS IS" BASIS,
    013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014     * See the License for the specific language governing permissions and
    015     * limitations under the License.
    016     */
    017
    018    package org.apache.commons.configuration.web;
    019
    020    import java.util.Iterator;
    021    import javax.servlet.FilterConfig;
    022
    023    import org.apache.commons.collections.iterators.EnumerationIterator;
    024
    025    /**
    026     * A configuration wrapper around a {@link FilterConfig}. This configuration is
    027     * read only, adding or removing a property will throw an
    028     * UnsupportedOperationException.
    029     *
    030     * @author <a href="mailto:ebourg@apache.org">Emmanuel Bourg</a>
    031     * @version $Revision: 515306 $, $Date: 2007-03-06 22:15:00 +0100 (Di, 06. Mrz 2007) $
    032     * @since 1.1
    033     */
    034    public class ServletFilterConfiguration extends BaseWebConfiguration
    035    {
    036        /** Stores the wrapped filter config.*/
    037        protected FilterConfig config;
    038
    039        /**
    040         * Create a ServletFilterConfiguration using the filter initialization parameters.
    041         *
    042         * @param config the filter configuration
    043         */
    044        public ServletFilterConfiguration(FilterConfig config)
    045        {
    046            this.config = config;
    047        }
    048
    049        public Object getProperty(String key)
    050        {
    051            return handleDelimiters(config.getInitParameter(key));
    052        }
    053
    054        public Iterator getKeys()
    055        {
    056            return new EnumerationIterator(config.getInitParameterNames());
    057        }
    058    }