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62 lines
1.7 KiB
Java
62 lines
1.7 KiB
Java
import java.lang.annotation.Annotation;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Iterator;
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import java.util.List;
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@Retention(RetentionPolicy.RUNTIME) @interface One {}
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@Retention(RetentionPolicy.RUNTIME) @interface Two {}
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@Retention(RetentionPolicy.RUNTIME) @interface Three {}
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@Retention(RetentionPolicy.RUNTIME) @interface Four {}
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@Retention(RetentionPolicy.RUNTIME) @interface Five {}
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@Retention(RetentionPolicy.RUNTIME) @interface Six {}
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interface Target {
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public void m();
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}
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class A implements Target {
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public void m() {
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}
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}
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aspect X {
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declare @method: * Target+.*(..): @One;
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declare @method: * Target+.*(..): @Two;
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}
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public class DecA2 {
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public static void main(String []argv) {
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try {
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Class c = Target.class;
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Method m = c.getDeclaredMethod("m",null);
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System.err.println("There are "+m.getAnnotations().length+" annotations on public void Target.m():");
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dumpAnnos(m.getAnnotations());
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c = A.class;
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m = c.getDeclaredMethod("m",null);
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System.err.println("There are "+m.getAnnotations().length+" annotations on public void A.m():");
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dumpAnnos(m.getAnnotations());
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} catch (Exception e) { e.printStackTrace();}
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}
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public static void dumpAnnos(Annotation[] anns) {
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List l = new ArrayList();
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if (anns!=null) {
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for (int i = 0; i < anns.length; i++) {
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l.add(anns[i].annotationType().getName());
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}
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}
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Collections.sort(l);
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int i = 1;
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for (Iterator iter = l.iterator(); iter.hasNext();) {
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System.err.println((i++)+") "+iter.next());
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}
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}
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} |