IndexedGetterMonitor


1   package jfun.yan.monitoring;
2   
3   import java.beans.PropertyDescriptor  ;
4   /**
5    * <p>
6    * This interface represents something that monitors the invocation of an indexed java bean getter.
7    * </p>
8    * @author Michelle Lei
9    *
10   */
11  public interface IndexedGetterMonitor {
12    /**
13     * This method is called right before the getter is called.
14     * @param obj the java bean object.
15     * @param desc the descriptor for the property.
16     * @param ind the index.
17     */
18    void propertyGetting(Object   obj, PropertyDescriptor   desc, int ind);
19    /**
20     * This method is called after the getter is called successfully.
21     * @param obj the java bean object.
22     * @param desc the descriptor for the property.
23     * @param ind the index.
24     * @param val the property value.
25     * @param duration exactly how long it took to run the getter. (in milliseconds)
26     */
27    void propertyGot(Object   obj, PropertyDescriptor   desc, int ind, Object   val, long duration);
28    /**
29     * This method is called after the getter failed.
30     * @param obj the java bean object.
31     * @param desc the descriptor for the property.
32     * @param ind the index.
33     * @param err the exception thrown out of the getter.
34     * @param duration exactly how long it took to run the getter. (in milliseconds)
35     */
36    void propertyGetFailed(Object   obj, PropertyDescriptor   desc, int ind,
37            Throwable   err, long duration);
38  }
39

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