Clover coverage report - Code Coverage for hivemind release 1.0
Coverage timestamp: Wed Sep 22 2004 08:05:25 EDT
file stats: LOC: 97   Methods: 3
NCLOC: 54   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
EnumerationTranslator.java 100% 100% 100% 100%
coverage
 1   
 //  Copyright 2004 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   
 //
 7   
 //     http://www.apache.org/licenses/LICENSE-2.0
 8   
 //
 9   
 // 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.
 14   
 
 15   
 package org.apache.hivemind.schema.rules;
 16   
 
 17   
 import java.lang.reflect.Field;
 18   
 import java.util.Map;
 19   
 
 20   
 import org.apache.hivemind.ApplicationRuntimeException;
 21   
 import org.apache.hivemind.HiveMind;
 22   
 import org.apache.hivemind.Location;
 23   
 import org.apache.hivemind.internal.Module;
 24   
 import org.apache.hivemind.schema.Translator;
 25   
 
 26   
 /**
 27   
  * Used to translate a set of strings to one of a number of constant values.
 28   
  * Each input string is matched against the name of a public static field
 29   
  * of a class.  The name of the class, and the mappings, are provided
 30   
  * in the initializer.
 31   
  *
 32   
  * @author Howard Lewis Ship
 33   
  */
 34   
 public class EnumerationTranslator implements Translator
 35   
 {
 36   
     private Map _mappings;
 37   
     private String _className;
 38   
     private Class _class;
 39   
 
 40   
     /**
 41   
      * Initialized the translator; the intitializer is the name of the class, a comma,
 42   
      * and a series of key=value mappings from the input values to the names
 43   
      * of the public static fields of the class.
 44   
      */
 45  5
     public EnumerationTranslator(String initializer)
 46   
     {
 47  5
         int commax = initializer.indexOf(',');
 48   
 
 49  5
         _className = initializer.substring(0, commax);
 50   
 
 51  5
         _mappings = RuleUtils.convertInitializer(initializer.substring(commax + 1));
 52   
     }
 53   
 
 54  5
     private synchronized Class getClass(Module contributingModule)
 55   
     {
 56  5
         if (_class == null)
 57  4
             _class = contributingModule.getClassResolver().findClass(_className);
 58   
 
 59  4
         return _class;
 60   
     }
 61   
 
 62  6
     public Object translate(
 63   
         Module contributingModule,
 64   
         Class propertyType,
 65   
         String inputValue,
 66   
         Location location)
 67   
     {
 68  6
         if (HiveMind.isBlank(inputValue))
 69  1
             return null;
 70   
 
 71  5
         Class c = getClass(contributingModule);
 72   
 
 73  4
         String fieldName = (String) _mappings.get(inputValue);
 74   
 
 75  4
         if (fieldName == null)
 76  1
             throw new ApplicationRuntimeException(
 77   
                 RulesMessages.enumNotRecognized(inputValue),
 78   
                 location,
 79   
                 null);
 80   
 
 81  3
         try
 82   
         {
 83  3
             Field f = c.getField(fieldName);
 84   
 
 85  2
             return f.get(null);
 86   
         }
 87   
         catch (Exception ex)
 88   
         {
 89  1
             throw new ApplicationRuntimeException(
 90   
                 RulesMessages.enumError(c, fieldName, ex),
 91   
                 location,
 92   
                 ex);
 93   
         }
 94   
     }
 95   
 
 96   
 }
 97