com.sun.jersey.core.spi.component.ComponentDestructor Maven / Gradle / Ivy
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package com.sun.jersey.core.spi.component;
import com.sun.jersey.core.reflection.AnnotatedMethod;
import com.sun.jersey.core.reflection.MethodList;
import com.sun.jersey.core.reflection.ReflectionHelper;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
/**
* A destructor of a component.
*
* @author [email protected]
*/
public class ComponentDestructor {
private final List preDestroys;
/**
* Create a component destructor.
*
* @param c the class of instances to destruct.
*/
public ComponentDestructor(Class c) {
this.preDestroys = getPreDestroyMethods(c);
}
private static List getPreDestroyMethods(Class c) {
Class preDestroyClass = AccessController.doPrivileged(ReflectionHelper.classForNamePA("javax.annotation.PreDestroy"));
List list = new ArrayList();
HashSet names = new HashSet();
if (preDestroyClass != null) {
MethodList methodList = new MethodList(c, true);
for (AnnotatedMethod m : methodList.
hasAnnotation(preDestroyClass).
hasNumParams(0).
hasReturnType(void.class)) {
Method method = m.getMethod();
// only add method if not hidden/overridden
if (names.add(method.getName())) {
AccessController.doPrivileged(ReflectionHelper.setAccessibleMethodPA(method));
list.add(method);
}
}
}
return list;
}
public void destroy(Object o) throws IllegalAccessException,
IllegalArgumentException, InvocationTargetException {
for (Method preDestroy : preDestroys) {
preDestroy.invoke(o);
}
}
}