Coverage Report - org.apache.ojb.broker.PBLifeCycleEvent
 
Classes in this File Line Coverage Branch Coverage Complexity
PBLifeCycleEvent
N/A
N/A
2.692
PBLifeCycleEvent$Type
N/A
N/A
2.692
 
 1  
 package org.apache.ojb.broker;
 2  
 
 3  
 /* Copyright 2003-2005 The Apache Software Foundation
 4  
  *
 5  
  * Licensed under the Apache License, Version 2.0 (the "License");
 6  
  * you may not use this file except in compliance with the License.
 7  
  * You may obtain a copy of the License at
 8  
  *
 9  
  *     http://www.apache.org/licenses/LICENSE-2.0
 10  
  *
 11  
  * Unless required by applicable law or agreed to in writing, software
 12  
  * distributed under the License is distributed on an "AS IS" BASIS,
 13  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 14  
  * See the License for the specific language governing permissions and
 15  
  * limitations under the License.
 16  
  */
 17  
 
 18  
 import org.apache.commons.lang.builder.ToStringBuilder;
 19  
 import org.apache.commons.lang.builder.ToStringStyle;
 20  
 
 21  
 /**
 22  
  * The <code>PBLifeCycleEvent</code> encapsulates information about
 23  
  * the life-cycle of a persistent object.
 24  
  * <br/>
 25  
  * NOTE:
 26  
  * <br/>
 27  
  * Because of performance reasons OJB intern reuse instances of this class
 28  
  * by reset target object.
 29  
  *
 30  
  * @author Armin Waibel
 31  
  * @version $Id: PBLifeCycleEvent.java,v 1.1 2007-08-24 22:17:36 ewestfal Exp $
 32  
  */
 33  
 public final class PBLifeCycleEvent extends PersistenceBrokerEvent
 34  
 {
 35  
     /** Denotes an event that happens before the insertion of an object. */
 36  
     public static final int TYPE_BEFORE_INSERT = 1;
 37  
     /** Denotes an event that happens before the deletion of an object. */
 38  
     public static final int TYPE_BEFORE_DELETE = 2;
 39  
     /** Denotes an event that happens before the update of an object. */
 40  
     public static final int TYPE_BEFORE_UPDATE = 3;
 41  
     /** Denotes an event that happens after the update of an object. */
 42  
     public static final int TYPE_AFTER_UPDATE = 4;
 43  
     /** Denotes an event that happens after the deletion of an object. */
 44  
     public static final int TYPE_AFTER_DELETE = 5;
 45  
     /** Denotes an event that happens after the lookup of an object. */
 46  
     public static final int TYPE_AFTER_LOOKUP = 6;
 47  
     /** Denotes an event that happens after the insertion of an object. */
 48  
     public static final int TYPE_AFTER_INSERT = 7;
 49  
 
 50  
     private Type eventType;
 51  
     private Object target;
 52  
 
 53  
     /**
 54  
      * Creates a new event instance.
 55  
      * 
 56  
      * @param broker    The broker
 57  
      * @param target    The object which caused the event
 58  
      * @param eventType The type of the event
 59  
      */
 60  
     public PBLifeCycleEvent(PersistenceBroker broker, Object target, Type eventType)
 61  
     {
 62  
         super(broker);
 63  
         this.target = target;
 64  
         this.eventType = eventType;
 65  
     }
 66  
 
 67  
     /**
 68  
      * Creates a new event instance.
 69  
      * 
 70  
      * @param broker The broker
 71  
      * @param type   The type of the event
 72  
      */
 73  
     public PBLifeCycleEvent(PersistenceBroker broker, Type type)
 74  
     {
 75  
         super(broker);
 76  
         this.eventType = type;
 77  
     }
 78  
 
 79  
     /**
 80  
      * Returns the target object as an instance of {@link PersistenceBrokerAware} if possible.
 81  
      * 
 82  
      * @return The {@link PersistenceBrokerAware} instance if there is a target and it implements
 83  
      *         this interface
 84  
      */
 85  
     public PersistenceBrokerAware getPersitenceBrokerAware()
 86  
     {
 87  
         if ((target != null) && (target instanceof PersistenceBrokerAware))
 88  
         {
 89  
             return (PersistenceBrokerAware)target;
 90  
         }
 91  
         else
 92  
         {
 93  
             return null;
 94  
         }
 95  
     }
 96  
 
 97  
     /**
 98  
      * Set the object that caused the event.
 99  
      * 
 100  
      * @param obj The object
 101  
      */
 102  
     public void setTarget(Object obj)
 103  
     {
 104  
         this.target = obj;
 105  
     }
 106  
 
 107  
     /**
 108  
      * Returns the object that caused the event.
 109  
      * 
 110  
      * @return The object
 111  
      */
 112  
     public Object getTarget()
 113  
     {
 114  
         return target;
 115  
     }
 116  
 
 117  
     /**
 118  
      * {@inheritDoc}
 119  
      */
 120  
     public String toString()
 121  
     {
 122  
         ToStringBuilder buf = new ToStringBuilder(this, ToStringStyle.MULTI_LINE_STYLE);
 123  
         buf.append("target object", target).
 124  
                 append("source object", getSource()).
 125  
                 append("eventType", eventType.toString());
 126  
         return buf.toString();
 127  
     }
 128  
 
 129  
     /**
 130  
      * Returns the event type.
 131  
      * 
 132  
      * @return The event type
 133  
      */
 134  
     public Type getEventType()
 135  
     {
 136  
         return eventType;
 137  
     }
 138  
 
 139  
     /**
 140  
      * Enum-like class for the event types.
 141  
      */
 142  
     public static class Type
 143  
     {
 144  
         /** Denotes an event that happens before the insertion of an object. */
 145  
         public static final Type BEFORE_INSERT = new Type(TYPE_BEFORE_INSERT);
 146  
         /** Denotes an event that happens before the update of an object. */
 147  
         public static final Type BEFORE_UPDATE = new Type(TYPE_BEFORE_UPDATE);
 148  
         /** Denotes an event that happens after the insertion of an object. */
 149  
         public static final Type AFTER_INSERT = new Type(TYPE_AFTER_INSERT);
 150  
         /** Denotes an event that happens after the update of an object. */
 151  
         public static final Type AFTER_UPDATE = new Type(TYPE_AFTER_UPDATE);
 152  
         /** Denotes an event that happens before the deletion of an object. */
 153  
         public static final Type BEFORE_DELETE = new Type(TYPE_BEFORE_DELETE);
 154  
         /** Denotes an event that happens after the deletion of an object. */
 155  
         public static final Type AFTER_DELETE = new Type(TYPE_AFTER_DELETE);
 156  
         /** Denotes an event that happens after the lookup of an object. */
 157  
         public static final Type AFTER_LOOKUP = new Type(TYPE_AFTER_LOOKUP);
 158  
 
 159  
         private int type;
 160  
 
 161  
         /**
 162  
          * Creates a new instance.
 163  
          * 
 164  
          * @param type The type value
 165  
          */
 166  
         protected Type(int type)
 167  
         {
 168  
             this.type = type;
 169  
         }
 170  
 
 171  
         /**
 172  
          * {@inheritDoc}
 173  
          */
 174  
         public final boolean equals(Object obj)
 175  
         {
 176  
             if (obj == this)
 177  
             {
 178  
                 return true;
 179  
             }
 180  
             if (!(obj instanceof PBStateEvent))
 181  
             {
 182  
                 return false;
 183  
             }
 184  
 
 185  
             return type == ((Type) obj).type;
 186  
         }
 187  
 
 188  
         /**
 189  
          * {@inheritDoc}
 190  
          */
 191  
         public final int hashCode()
 192  
         {
 193  
             return type;
 194  
         }
 195  
 
 196  
         /**
 197  
          * Returns the type id.
 198  
          * 
 199  
          * @return The type id
 200  
          */
 201  
         public final int typeId()
 202  
         {
 203  
             return type;
 204  
         }
 205  
 
 206  
         /**
 207  
          * {@inheritDoc}
 208  
          */
 209  
         public String toString()
 210  
         {
 211  
             return this.getClass().getName() + " [type= " + typeAsName(type) + "]";
 212  
         }
 213  
 
 214  
         private static String typeAsName(int type)
 215  
         {
 216  
             if (type == TYPE_AFTER_DELETE)
 217  
             {
 218  
                 return "AFTER_DELETE";
 219  
             }
 220  
             else if (type == TYPE_AFTER_LOOKUP)
 221  
             {
 222  
                 return "AFTER_LOOKUP";
 223  
             }
 224  
             else if (type == TYPE_AFTER_INSERT)
 225  
             {
 226  
                 return "AFTER_INSERT";
 227  
             }
 228  
             else if (type == TYPE_AFTER_UPDATE)
 229  
             {
 230  
                 return "AFTER_UPDATE";
 231  
             }
 232  
             else if (type == TYPE_BEFORE_DELETE)
 233  
             {
 234  
                 return "BEFORE_DELETE";
 235  
             }
 236  
             else if (type == TYPE_BEFORE_INSERT)
 237  
             {
 238  
                 return "BEFORE_INSERT";
 239  
             }
 240  
             else if (type == TYPE_BEFORE_UPDATE)
 241  
             {
 242  
                 return "BEFORE_UPDATE";
 243  
             }
 244  
             else
 245  
             {
 246  
                 throw new OJBRuntimeException("Could not find type with typeId " + type);
 247  
             }
 248  
         }
 249  
     }
 250  
 }