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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17
    18  package org.apache.commons.configuration.web;
    19
    20  import java.util.Iterator;
    21  import java.util.List;
    22  import javax.servlet.FilterConfig;
    23
    24  import org.apache.commons.collections.iterators.EnumerationIterator;
    25  import org.apache.commons.configuration.PropertyConverter;
    26
    27  /***
    28   * A configuration wrapper around a {@link FilterConfig}. This configuration is
    29   * read only, adding or removing a property will throw an
    30   * UnsupportedOperationException.
    31   *
    32   * @author <a href="mailto:ebourg@apache.org">Emmanuel Bourg</a>
    33   * @version $Revision: 439648 $, $Date: 2006-09-02 22:42:10 +0200 (Sa, 02 Sep 2006) $
    34   * @since 1.1
    35   */
    36  public class ServletFilterConfiguration extends BaseWebConfiguration
    37  {
    38      /*** Stores the wrapped filter config.*/
    39      protected FilterConfig config;
    40
    41      /***
    42       * Create a ServletFilterConfiguration using the filter initialization parameters.
    43       *
    44       * @param config the filter configuration
    45       */
    46      public ServletFilterConfiguration(FilterConfig config)
    47      {
    48          this.config = config;
    49      }
    50
    51      public Object getProperty(String key)
    52      {
    53          Object value = config.getInitParameter(key);
    54          if (!isDelimiterParsingDisabled())
    55          {
    56              List list = PropertyConverter.split((String) value, getListDelimiter());
    57              value = list.size() > 1 ? list : value;
    58          }
    59
    60          return value;
    61      }
    62
    63      public Iterator getKeys()
    64      {
    65          return new EnumerationIterator(config.getInitParameterNames());
    66      }
    67  }