Introduce reverse methods in AOP MethodMatchers and ClassFilters

spring-aop/src/main/java/org/springframework/aop/support/ClassFilters.java

@@ -85,6 +85,17 @@ public static ClassFilter intersection(ClassFilter[] classFilters) {
 		return new IntersectionClassFilter(classFilters);
 	}
 
+	/**
+	 * reverse the given ClassFilter match.
+	 * @param cf the ClassFilter
+	 * @return a distinct ClassFilter that not matches classes
+	 * of the given ClassFilter match
+	 */
+	public static ClassFilter reversion(ClassFilter cf) {
+		Assert.notNull(cf, "ClassFilter must not be null");
+		return new ReversionClassFilter(cf);
+	}
+
 
 	/**
 	 * ClassFilter implementation for a union of the given ClassFilters.
@@ -167,4 +178,40 @@ public String toString() {
 
 	}
 
+
+	/**
+	 * ClassFilter implementation for an reversion of the given ClassFilter.
+	 */
+	@SuppressWarnings("serial")
+	private static class ReversionClassFilter implements ClassFilter, Serializable {
+
+		private final ClassFilter filter;
+
+		ReversionClassFilter(ClassFilter filter) {
+			this.filter = filter;
+		}
+
+		@Override
+		public boolean matches(Class<?> clazz) {
+			return !filter.matches(clazz);
+		}
+
+		@Override
+		public boolean equals(@Nullable Object other) {
+			return (this == other || (other instanceof ReversionClassFilter &&
+					this.filter.equals(((ReversionClassFilter)other).filter)));
+		}
+
+		@Override
+		public int hashCode() {
+			return 37 * this.filter.hashCode();
+		}
+
+		@Override
+		public String toString() {
+			return getClass().getName() + ": " + this.filter;
+		}
+
+	}
+
 }

spring-aop/src/main/java/org/springframework/aop/support/MethodMatchers.java

@@ -81,6 +81,16 @@ public static MethodMatcher intersection(MethodMatcher mm1, MethodMatcher mm2) {
 				new IntersectionIntroductionAwareMethodMatcher(mm1, mm2) : new IntersectionMethodMatcher(mm1, mm2));
 	}
 
+	/**
+	 * reverse the given MethodMatcher match.
+	 * @param mm the MethodMatcher
+	 * @return a distinct MethodMatcher that not matches methods
+	 * of the given MethodMatcher match
+	 */
+	public static MethodMatcher reversion(MethodMatcher mm) {
+		return  new ReversionMethodMatcher(mm);
+	}
+
 	/**
 	 * Apply the given MethodMatcher to the given Method, supporting an
 	 * {@link org.springframework.aop.IntroductionAwareMethodMatcher}
@@ -351,4 +361,57 @@ public boolean matches(Method method, Class<?> targetClass, boolean hasIntroduct
 		}
 	}
 
+
+	/**
+	 * MethodMatcher implementation for an reversion of the given MethodMatcher.
+	 */
+	@SuppressWarnings("serial")
+	private static class ReversionMethodMatcher implements MethodMatcher, Serializable {
+
+		protected final MethodMatcher mm;
+
+		public ReversionMethodMatcher(MethodMatcher mm) {
+			Assert.notNull(mm, "MethodMatcher must not be null");
+			this.mm = mm;
+		}
+
+		@Override
+		public boolean matches(Method method, Class<?> targetClass) {
+			return !this.mm.matches(method, targetClass);
+		}
+
+		@Override
+		public boolean isRuntime() {
+			return this.mm.isRuntime();
+		}
+
+		@Override
+		public boolean matches(Method method, Class<?> targetClass, Object... args) {
+			return !this.mm.matches(method, targetClass, args);
+		}
+
+		@Override
+		public boolean equals(@Nullable Object other) {
+			if (this == other) {
+				return true;
+			}
+			if (!(other instanceof ReversionMethodMatcher)) {
+				return false;
+			}
+			ReversionMethodMatcher that = (ReversionMethodMatcher) other;
+			return this.mm.equals(that.mm);
+		}
+
+		@Override
+		public int hashCode() {
+			return 37 * this.mm.hashCode();
+		}
+
+		@Override
+		public String toString() {
+			return getClass().getName() + ": " + this.mm;
+		}
+
+	}
+
 }

spring-aop/src/test/java/org/springframework/aop/support/ClassFiltersTests.java

@@ -66,4 +66,13 @@ void intersection() {
 			.matches("^.+IntersectionClassFilter: \\[.+RootClassFilter: .+Exception, .+RootClassFilter: .+NestedRuntimeException\\]$");
 	}
 
+	@Test
+	void reversion() {
+		assertThat(exceptionFilter.matches(RuntimeException.class)).isTrue();
+		ClassFilter reversion = ClassFilters.reversion(exceptionFilter);
+		assertThat(reversion.matches(RuntimeException.class)).isFalse();
+		assertThat(reversion.toString())
+				.matches("^.+ReversionClassFilter: .+RootClassFilter: .+Exception$");
+	}
+
 }

spring-aop/src/test/java/org/springframework/aop/support/MethodMatchersTests.java

@@ -111,6 +111,19 @@ public void testUnionEquals() {
 		assertThat(second.equals(first)).isTrue();
 	}
 
+	@Test
+	public void testDynamicAndStaticMethodMatcherReversion() throws Exception {
+		MethodMatcher getterMatcher = new StartsWithMatcher("get");
+		MethodMatcher reversion = MethodMatchers.reversion(getterMatcher);
+		assertThat(reversion.isRuntime()).as("Reversion is a static matcher").isFalse();
+		assertThat(reversion.matches(ITESTBEAN_GETAGE, TestBean.class)).as("Didn't matched getAge method").isFalse();
+		assertThat(reversion.matches(IOTHER_ABSQUATULATE, TestBean.class)).as("Matched absquatulate method").isTrue();
+		reversion = MethodMatchers.reversion(new TestDynamicMethodMatcherWhichDoesNotMatch());
+		assertThat(reversion.isRuntime()).as("Intersection is a dynamic matcher").isTrue();
+		assertThat(reversion.matches(ITESTBEAN_SETAGE, TestBean.class)).as("Didn't matched setAge method").isFalse();
+		assertThat(reversion.matches(ITESTBEAN_SETAGE, TestBean.class, 5)).as("Matched setAge method").isTrue();
+	}
+
 
 	public static class StartsWithMatcher extends StaticMethodMatcher {