Coverage report

  %line %branch
org.apache.torque.om.ObjectKey
60% 
83% 

 1  
 package org.apache.torque.om;
 2  
 
 3  
 /*
 4  
  * Copyright 2001-2005 The Apache Software Foundation.
 5  
  *
 6  
  * Licensed under the Apache License, Version 2.0 (the "License")
 7  
  * you may not use this file except in compliance with the License.
 8  
  * You may obtain a copy of the License at
 9  
  *
 10  
  *     http://www.apache.org/licenses/LICENSE-2.0
 11  
  *
 12  
  * Unless required by applicable law or agreed to in writing, software
 13  
  * distributed under the License is distributed on an "AS IS" BASIS,
 14  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15  
  * See the License for the specific language governing permissions and
 16  
  * limitations under the License.
 17  
  */
 18  
 
 19  
 import java.io.Serializable;
 20  
 import org.apache.torque.TorqueException;
 21  
 
 22  
 /**
 23  
  * This class can be used to uniquely identify an object within
 24  
  * an application.  There are four subclasses: StringKey, NumberKey,
 25  
  * and DateKey, and ComboKey which is a Key made up of a combination
 26  
  * ofthe first three.
 27  
  *
 28  
  * @author <a href="mailto:jmcnally@apache.org">John McNally</a>
 29  
  * @version $Id: ObjectKey.java 239630 2005-08-24 12:25:32Z henning $
 30  
  */
 31  
 public abstract class ObjectKey implements Serializable, Comparable
 32  
 {
 33  
     /**
 34  
      * The underlying key value.
 35  
      */
 36  
     protected Object key;
 37  
 
 38  
     /**
 39  
      * Initializes the internal key value to <code>null</code>.
 40  
      */
 41  
     protected ObjectKey()
 42  178
     {
 43  178
         key = null;
 44  178
     }
 45  
 
 46  
     /**
 47  
      * Returns the hashcode of the underlying value (key), if key is
 48  
      * not null.  Otherwise calls Object.hashCode()
 49  
      *
 50  
      * @return an <code>int</code> value
 51  
      */
 52  
     public int hashCode()
 53  
     {
 54  0
         if (key == null)
 55  
         {
 56  0
             return super.hashCode();
 57  
         }
 58  0
         return key.hashCode();
 59  
     }
 60  
 
 61  
     /**
 62  
      * Get the underlying object.
 63  
      *
 64  
      * @return the underlying object
 65  
      */
 66  
     public Object getValue()
 67  
     {
 68  43
         return key;
 69  
     }
 70  
 
 71  
     /**
 72  
      * Appends a String representation of the key to a buffer.
 73  
      *
 74  
      * @param sb a <code>StringBuffer</code>
 75  
      */
 76  
     public void appendTo(StringBuffer sb)
 77  
     {
 78  10
         sb.append(this.toString());
 79  10
     }
 80  
 
 81  
     /**
 82  
      * Implements the compareTo method.
 83  
      *
 84  
      * @param obj the object to compare to this object
 85  
      * @return a numeric comparison of the two values
 86  
      */
 87  
     public int compareTo(Object obj)
 88  
     {
 89  0
         return toString().compareTo(obj.toString());
 90  
     }
 91  
 
 92  
     /**
 93  
      * Reset the underlying object using a String.
 94  
      *
 95  
      * @param s a <code>String</code> value
 96  
      * @exception TorqueException if an error occurs
 97  
      */
 98  
     public abstract void setValue(String s) throws TorqueException;
 99  
 }

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