Clover coverage report - Code Coverage for hivemind release 1.1-alpha-1
Coverage timestamp: Tue Jan 18 2005 07:55:08 EST
file stats: LOC: 61   Methods: 3
NCLOC: 21   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
Defense.java 100% 100% 66.7% 91.7%
coverage coverage
 1   
 // Copyright 2004, 2005 The Apache Software Foundation
 2   
 //
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 // Licensed under the Apache License, Version 2.0 (the "License");
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 // you may not use this file except in compliance with the License.
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 // You may obtain a copy of the License at
 6   
 //
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 //     http://www.apache.org/licenses/LICENSE-2.0
 8   
 //
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 // Unless required by applicable law or agreed to in writing, software
 10   
 // distributed under the License is distributed on an "AS IS" BASIS,
 11   
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12   
 // See the License for the specific language governing permissions and
 13   
 // limitations under the License.
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 15   
 package org.apache.hivemind.util;
 16   
 
 17   
 import org.apache.hivemind.HiveMindMessages;
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 19   
 /**
 20   
  * Simple utilities for defensive programming.
 21   
  * 
 22   
  * @author Howard M. Lewis Ship
 23   
  * @since 1.1
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  */
 25   
 public final class Defense
 26   
 {
 27  0
     private Defense()
 28   
     {
 29   
         // Prevent instantiation
 30   
     }
 31   
 
 32   
     /**
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      * Check for null parameter when not allowed.
 34   
      * 
 35   
      * @throws NullPointerException
 36   
      *             if parameter is null (the message indicates the name of the parameter).
 37   
      */
 38  2900
     public static void notNull(Object parameter, String parameterName)
 39   
     {
 40  2900
         if (parameter == null)
 41  1
             throw new NullPointerException(HiveMindMessages.paramNotNull(parameterName));
 42   
     }
 43   
 
 44   
     /**
 45   
      * Check that a parameter is not null, and assignable to a particular type.
 46   
      * 
 47   
      * @throws ClassCastException
 48   
      *             if not assignable (with a useable message)
 49   
      */
 50   
 
 51  3
     public static void isAssignable(Object parameter, Class expectedType, String parameterName)
 52   
     {
 53  3
         Defense.notNull(parameter, parameterName);
 54   
 
 55  3
         if (!expectedType.isAssignableFrom(parameter.getClass()))
 56  2
             throw new ClassCastException(HiveMindMessages.paramWrongType(
 57   
                     parameterName,
 58   
                     parameter,
 59   
                     expectedType));
 60   
     }
 61   
 }