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• RegistrationOverrideProhibited.java

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com.github.thorbenkuck.netcom2.annotations.rmi.RegistrationOverrideProhibited Maven / Gradle / Ivy

package com.github.thorbenkuck.netcom2.annotations.rmi;

import com.github.thorbenkuck.netcom2.network.server.RemoteObjectRegistration;

import java.lang.annotation.*;

/**
 * This annotation signals to the {@link RemoteObjectRegistration}, that it
 * should not be overridden if it is already registered.
 * 

 * If the {@link RemoteObjectRegistration} contains any instance of the provided
 * annotated Type, it will not be overridden. So the following will lead to the first object staying within the registration
 * 

 * 

 * {@literal @}RegistrationOverrideProhibited
 * interface Test {
 *     void test();
 * }
 *
 * class Testing {
 *     RemoteObjectRegistration registration = ...
 *     void run() {
 *         // This will register the TestImpl Class to the Registration, identified by the Test.class
 *         registration.register(new TestImpl(), Test.class);
 *         // This call will not work. It will debug, that it could not be registered
 *         registration.register(new TestImpl(), Test.class);
 *         // Same as above. However, TestImpl will still be registered to TestImpl.class
 *         registration.hook(new TestImpl());
 *     }
 *
 *     private class TestImpl implements Test {
 *         {@literal @}Override
 *         public void test() {
 *             // Do Something
 *         }
 *     }
 * }
 * 
 * 

 * So you may say that, any Object may be set to the RemoteObjectRegistration, but not updated.
 * 

 * Note: If you call {@link RemoteObjectRegistration#clear()}, this instance will still be cleared from the Registration
 *
 * @version 1.0
 * @since 1.0
 */
@Documented
@Inherited
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
public @interface RegistrationOverrideProhibited {
}