SetterMonitor


1   package jfun.yan.monitoring;
2   
3   import java.beans.PropertyDescriptor  ;
4   /**
5    * <p>
6    * This interface represents something that monitors the invocation of a java bean setter.
7    * </p>
8    * @author Michelle Lei
9    *
10   */
11  public interface SetterMonitor {
12    /**
13     * This method is called right before the setter is called.
14     * @param obj the java bean object.
15     * @param desc the descriptor for the property.
16     * @param val the property value to set.
17     */
18    void propertySetting(Object   obj, PropertyDescriptor   desc, Object   val);
19    /**
20     * This method is called after the setter is called successfully.
21     * @param obj the java bean object.
22     * @param desc the descriptor for the property.
23     * @param val the property value to set.
24     * @param duration exactly how long it took to run the setter. (in milliseconds)
25     */
26    void propertySet(Object   obj, PropertyDescriptor   desc, Object   val, long duration);
27    /**
28     * This method is called after the setter failed.
29     * @param obj the java bean object.
30     * @param desc the descriptor for the property.
31     * @param val the property value to set.
32     * @param err the exception thrown out of the getter.
33     * @param duration exactly how long it took to run the setter. (in milliseconds)
34     */
35    void propertySetFailed(Object   obj, PropertyDescriptor   desc, Object   val,
36            Throwable   err, long duration);
37  }
38

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