Coverage report

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

 1  
 package org.apache.torque.om;
 2  
 
 3  
 /*
 4  
  * Licensed to the Apache Software Foundation (ASF) under one
 5  
  * or more contributor license agreements.  See the NOTICE file
 6  
  * distributed with this work for additional information
 7  
  * regarding copyright ownership.  The ASF licenses this file
 8  
  * to you under the Apache License, Version 2.0 (the
 9  
  * "License"); you may not use this file except in compliance
 10  
  * with the License.  You may obtain a copy of the License at
 11  
  *
 12  
  *   http://www.apache.org/licenses/LICENSE-2.0
 13  
  *
 14  
  * Unless required by applicable law or agreed to in writing,
 15  
  * software distributed under the License is distributed on an
 16  
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 17  
  * KIND, either express or implied.  See the License for the
 18  
  * specific language governing permissions and limitations
 19  
  * under the License.
 20  
  */
 21  
 
 22  
 import java.io.Serializable;
 23  
 import org.apache.torque.TorqueException;
 24  
 
 25  
 /**
 26  
  * This class can be used to uniquely identify an object within
 27  
  * an application.  There are four subclasses: StringKey, NumberKey,
 28  
  * and DateKey, and ComboKey which is a Key made up of a combination
 29  
  * ofthe first three.
 30  
  *
 31  
  * @author <a href="mailto:jmcnally@apache.org">John McNally</a>
 32  
  * @version $Id: ObjectKey.java 473821 2006-11-11 22:37:25Z tv $
 33  
  */
 34  
 public abstract class ObjectKey implements Serializable, Comparable
 35  
 {
 36  
     /**
 37  
      * The underlying key value.
 38  
      */
 39  
     protected Object key;
 40  
 
 41  
     /**
 42  
      * Initializes the internal key value to <code>null</code>.
 43  
      */
 44  
     protected ObjectKey()
 45  1068
     {
 46  1068
         key = null;
 47  1068
     }
 48  
 
 49  
     /**
 50  
      * Returns the hashcode of the underlying value (key), if key is
 51  
      * not null.  Otherwise calls Object.hashCode()
 52  
      *
 53  
      * @return an <code>int</code> value
 54  
      */
 55  
     public int hashCode()
 56  
     {
 57  0
         if (key == null)
 58  
         {
 59  0
             return super.hashCode();
 60  
         }
 61  0
         return key.hashCode();
 62  
     }
 63  
 
 64  
     /**
 65  
      * Get the underlying object.
 66  
      *
 67  
      * @return the underlying object
 68  
      */
 69  
     public Object getValue()
 70  
     {
 71  258
         return key;
 72  
     }
 73  
 
 74  
     /**
 75  
      * Appends a String representation of the key to a buffer.
 76  
      *
 77  
      * @param sb a <code>StringBuffer</code>
 78  
      */
 79  
     public void appendTo(StringBuffer sb)
 80  
     {
 81  60
         sb.append(this.toString());
 82  60
     }
 83  
 
 84  
     /**
 85  
      * Implements the compareTo method.
 86  
      *
 87  
      * @param obj the object to compare to this object
 88  
      * @return a numeric comparison of the two values
 89  
      */
 90  
     public int compareTo(Object obj)
 91  
     {
 92  0
         return toString().compareTo(obj.toString());
 93  
     }
 94  
 
 95  
     /**
 96  
      * Reset the underlying object using a String.
 97  
      *
 98  
      * @param s a <code>String</code> value
 99  
      * @exception TorqueException if an error occurs
 100  
      */
 101  
     public abstract void setValue(String s) throws TorqueException;
 102  
 }

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