Coverage report

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org.apache.commons.configuration.web.ServletContextConfiguration
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 1  
 /*
 2  
  * Copyright 2004 The Apache Software Foundation.
 3  
  *
 4  
  * Licensed under the Apache License, Version 2.0 (the "License")
 5  
  * you may not use this file except in compliance with the License.
 6  
  * You may obtain a copy of the License at
 7  
  *
 8  
  *     http://www.apache.org/licenses/LICENSE-2.0
 9  
  *
 10  
  * Unless required by applicable law or agreed to in writing, software
 11  
  * distributed under the License is distributed on an "AS IS" BASIS,
 12  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13  
  * See the License for the specific language governing permissions and
 14  
  * limitations under the License.
 15  
  */
 16  
 
 17  
 package org.apache.commons.configuration.web;
 18  
 
 19  
 import java.util.Iterator;
 20  
 import java.util.List;
 21  
 import javax.servlet.Servlet;
 22  
 import javax.servlet.ServletContext;
 23  
 
 24  
 import org.apache.commons.collections.iterators.EnumerationIterator;
 25  
 import org.apache.commons.configuration.AbstractConfiguration;
 26  
 import org.apache.commons.configuration.PropertyConverter;
 27  
 
 28  
 /**
 29  
  * A configuration wrapper to read the initialization parameters of a servlet
 30  
  * context. This configuration is read only, adding or removing a property will
 31  
  * throw an UnsupportedOperationException.
 32  
  *
 33  
  * @author <a href="mailto:ebourg@apache.org">Emmanuel Bourg</a>
 34  
  * @version $Revision: 155408 $, $Date: 2005-02-26 13:56:39 +0100 (Sa, 26 Feb 2005) $
 35  
  * @since 1.1
 36  
  */
 37  
 public class ServletContextConfiguration extends AbstractConfiguration
 38  
 {
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     protected ServletContext context;
 40  
 
 41  
     /**
 42  
      * Create a ServletContextConfiguration using the context of
 43  
      * the specified servlet.
 44  
      *
 45  
      * @param servlet the servlet
 46  54
      */
 47  54
     public ServletContextConfiguration(Servlet servlet)
 48  152
     {
 49  98
         this.context = servlet.getServletConfig().getServletContext();
 50  98
     }
 51  
 
 52  
     /**
 53  
      * Create a ServletContextConfiguration using the servlet context
 54  
      * initialization parameters.
 55  
      *
 56  
      * @param context the servlet context
 57  18
      */
 58  18
     public ServletContextConfiguration(ServletContext context)
 59  32
     {
 60  14
         this.context = context;
 61  14
     }
 62  
 
 63  45
     public Object getProperty(String key)
 64  
     {
 65  98
         Object value = context.getInitParameter(key);
 66  98
         List list = PropertyConverter.split((String) value, getDelimiter());
 67  
 
 68  98
         return list.size() > 1 ? list : value;
 69  
     }
 70  
 
 71  
     /**
 72  
      * <p><strong>This operation is not supported and will throw an
 73  
      * UnsupportedOperationException.</strong></p>
 74  9
      *
 75  
      * @throws UnsupportedOperationException
 76  
      */
 77  
     protected void addPropertyDirect(String key, Object obj)
 78  
     {
 79  32
         throw new UnsupportedOperationException("Read only configuration");
 80  
     }
 81  
 
 82  
     public boolean isEmpty()
 83  
     {
 84  46
         return !getKeys().hasNext();
 85  
     }
 86  
 
 87  
     public boolean containsKey(String key)
 88  
     {
 89  28
         return getProperty(key) != null;
 90  
     }
 91  
 
 92  
     /**
 93  
      * <p><strong>This operation is not supported and will throw an
 94  
      * UnsupportedOperationException.</strong></p>
 95  9
      *
 96  
      * @throws UnsupportedOperationException
 97  
      */
 98  
     public void clearProperty(String key)
 99  
     {
 100  50
         throw new UnsupportedOperationException("Read only configuration");
 101  
     }
 102  
 
 103  
     public Iterator getKeys()
 104  
     {
 105  42
         return new EnumerationIterator(context.getInitParameterNames());
 106  
     }
 107  
 }

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