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19 package org.eclipse.jetty.plus.annotation;
20
21 import java.lang.reflect.Method;
22 import java.lang.reflect.Modifier;
23
24 import org.eclipse.jetty.util.log.Log;
25 import org.eclipse.jetty.util.log.Logger;
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32 public class PreDestroyCallback extends LifeCycleCallback
33 {
34 private static final Logger LOG = Log.getLogger(PreDestroyCallback.class);
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45 public void validate(Class<?> clazz, Method method)
46 {
47
48 if (method.getExceptionTypes().length > 0)
49 throw new IllegalArgumentException(clazz.getName()+"."+method.getName()+ " cannot not throw a checked exception");
50
51 if (!method.getReturnType().equals(Void.TYPE))
52 throw new IllegalArgumentException(clazz.getName()+"."+method.getName()+ " cannot not have a return type");
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54 if (Modifier.isStatic(method.getModifiers()))
55 throw new IllegalArgumentException(clazz.getName()+"."+method.getName()+ " cannot be static");
56
57 }
58
59
60 public void callback(Object instance)
61 {
62 try
63 {
64 super.callback(instance);
65 }
66 catch (Exception e)
67 {
68 LOG.warn("Ignoring exception thrown on preDestroy call to "+getTargetClass()+"."+getTarget().getName(), e);
69 }
70 }
71
72 public boolean equals(Object o)
73 {
74 if (super.equals(o) && (o instanceof PreDestroyCallback))
75 return true;
76 return false;
77 }
78 }