Merge branch '5.2.x'

spring-core/src/main/java/org/springframework/core/annotation/AnnotationTypeMappings.java

@@ -30,7 +30,7 @@ import org.springframework.util.ConcurrentReferenceHashMap;
  * Provides {@link AnnotationTypeMapping} information for a single source
  * annotation type. Performs a recursive breadth first crawl of all
  * meta-annotations to ultimately provide a quick way to map the attributes of
- * root {@link Annotation}.
+ * a root {@link Annotation}.
  *
  * <p>Supports convention based merging of meta-annotations as well as implicit
  * and explicit {@link AliasFor @AliasFor} aliases. Also provides information
@@ -81,17 +81,15 @@ final class AnnotationTypeMappings {
 	}
 
 	private void addMetaAnnotationsToQueue(Deque<AnnotationTypeMapping> queue, AnnotationTypeMapping source) {
-		Annotation[] metaAnnotations =
-				AnnotationsScanner.getDeclaredAnnotations(source.getAnnotationType(), false);
+		Annotation[] metaAnnotations = AnnotationsScanner.getDeclaredAnnotations(source.getAnnotationType(), false);
 		for (Annotation metaAnnotation : metaAnnotations) {
 			if (!isMappable(source, metaAnnotation)) {
 				continue;
 			}
-			Annotation[] repeatedAnnotations = this.repeatableContainers
-					.findRepeatedAnnotations(metaAnnotation);
+			Annotation[] repeatedAnnotations = this.repeatableContainers.findRepeatedAnnotations(metaAnnotation);
 			if (repeatedAnnotations != null) {
 				for (Annotation repeatedAnnotation : repeatedAnnotations) {
-					if (!isMappable(source, metaAnnotation)) {
+					if (!isMappable(source, repeatedAnnotation)) {
 						continue;
 					}
 					addIfPossible(queue, source, repeatedAnnotation);
@@ -103,9 +101,7 @@ final class AnnotationTypeMappings {
 		}
 	}
 
-	private void addIfPossible(Deque<AnnotationTypeMapping> queue,
-			AnnotationTypeMapping source, Annotation ann) {
-
+	private void addIfPossible(Deque<AnnotationTypeMapping> queue, AnnotationTypeMapping source, Annotation ann) {
 		addIfPossible(queue, source, ann.annotationType(), ann);
 	}
 
@@ -183,21 +179,20 @@ final class AnnotationTypeMappings {
 	static AnnotationTypeMappings forAnnotationType(
 			Class<? extends Annotation> annotationType, AnnotationFilter annotationFilter) {
 
-		return forAnnotationType(annotationType,
-				RepeatableContainers.standardRepeatables(), annotationFilter);
+		return forAnnotationType(annotationType, RepeatableContainers.standardRepeatables(), annotationFilter);
 	}
 
 	/**
 	 * Create {@link AnnotationTypeMappings} for the specified annotation type.
 	 * @param annotationType the source annotation type
+	 * @param repeatableContainers the repeatable containers that may be used by
+	 * the meta-annotations
 	 * @param annotationFilter the annotation filter used to limit which
 	 * annotations are considered
 	 * @return type mappings for the annotation type
 	 */
-	static AnnotationTypeMappings forAnnotationType(
-			Class<? extends Annotation> annotationType,
-			RepeatableContainers repeatableContainers,
-			AnnotationFilter annotationFilter) {
+	static AnnotationTypeMappings forAnnotationType(Class<? extends Annotation> annotationType,
+			RepeatableContainers repeatableContainers, AnnotationFilter annotationFilter) {
 
 		if (repeatableContainers == RepeatableContainers.standardRepeatables()) {
 			return standardRepeatablesCache.computeIfAbsent(annotationFilter,
@@ -207,8 +202,7 @@ final class AnnotationTypeMappings {
 			return noRepeatablesCache.computeIfAbsent(annotationFilter,
 					key -> new Cache(repeatableContainers, key)).get(annotationType);
 		}
-		return new AnnotationTypeMappings(repeatableContainers, annotationFilter,
-				annotationType);
+		return new AnnotationTypeMappings(repeatableContainers, annotationFilter, annotationType);
 	}
 
 	static void clearCache() {

spring-core/src/main/java/org/springframework/core/annotation/MergedAnnotations.java

@@ -326,7 +326,7 @@ public interface MergedAnnotations extends Iterable<MergedAnnotation<Annotation>
 	static MergedAnnotations from(AnnotatedElement element, SearchStrategy searchStrategy,
 			RepeatableContainers repeatableContainers) {
 
-		return TypeMappedAnnotations.from(element, searchStrategy, repeatableContainers, AnnotationFilter.PLAIN);
+		return from(element, searchStrategy, repeatableContainers, AnnotationFilter.PLAIN);
 	}
 
 	/**
@@ -340,7 +340,7 @@ public interface MergedAnnotations extends Iterable<MergedAnnotation<Annotation>
 	 * @param annotationFilter an annotation filter used to restrict the
 	 * annotations considered
 	 * @return a {@link MergedAnnotations} instance containing the merged
-	 * element annotations
+	 * annotations for the supplied element
 	 */
 	static MergedAnnotations from(AnnotatedElement element, SearchStrategy searchStrategy,
 			RepeatableContainers repeatableContainers, AnnotationFilter annotationFilter) {
@@ -386,7 +386,7 @@ public interface MergedAnnotations extends Iterable<MergedAnnotation<Annotation>
 	 * @return a {@link MergedAnnotations} instance containing the annotations
 	 */
 	static MergedAnnotations from(Object source, Annotation[] annotations, RepeatableContainers repeatableContainers) {
-		return TypeMappedAnnotations.from(source, annotations, repeatableContainers, AnnotationFilter.PLAIN);
+		return from(source, annotations, repeatableContainers, AnnotationFilter.PLAIN);
 	}
 
 	/**

spring-core/src/test/java/org/springframework/core/annotation/AnnotationTypeMappingsTests.java

@@ -28,6 +28,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
+import java.util.stream.IntStream;
 
 import javax.annotation.Nullable;
 
@@ -38,6 +39,7 @@ import org.springframework.core.annotation.AnnotationTypeMapping.MirrorSets.Mirr
 import org.springframework.lang.UsesSunMisc;
 import org.springframework.util.ReflectionUtils;
 
+import static java.util.stream.Collectors.toList;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 
@@ -83,6 +85,14 @@ class AnnotationTypeMappingsTests {
 						WithRepeatedMetaAnnotations.class, Repeating.class, Repeating.class);
 	}
 
+	@Test
+	void forAnnotationTypeWhenRepeatableMetaAnnotationIsFiltered() {
+		AnnotationTypeMappings mappings = AnnotationTypeMappings.forAnnotationType(WithRepeatedMetaAnnotations.class,
+				Repeating.class.getName()::equals);
+		assertThat(getAll(mappings)).flatExtracting(AnnotationTypeMapping::getAnnotationType)
+				.containsExactly(WithRepeatedMetaAnnotations.class);
+	}
+
 	@Test
 	void forAnnotationTypeWhenSelfAnnotatedReturnsMapping() {
 		AnnotationTypeMappings mappings = AnnotationTypeMappings.forAnnotationType(SelfAnnotated.class);
@@ -500,11 +510,7 @@ class AnnotationTypeMappingsTests {
 	private List<AnnotationTypeMapping> getAll(AnnotationTypeMappings mappings) {
 		// AnnotationTypeMappings does not implement Iterable so we don't create
 		// too many garbage Iterators
-		List<AnnotationTypeMapping> result = new ArrayList<>(mappings.size());
-		for (int i = 0; i < mappings.size(); i++) {
-			result.add(mappings.get(i));
-		}
-		return result;
+		return IntStream.range(0, mappings.size()).mapToObj(mappings::get).collect(toList());
 	}
 
 	private List<String> getNames(MirrorSet mirrorSet) {

spring-core/src/test/java/org/springframework/core/annotation/MergedAnnotationsRepeatableAnnotationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,6 +25,7 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 import java.lang.reflect.AnnotatedElement;
 import java.util.Set;
+import java.util.stream.Stream;
 
 import org.assertj.core.api.ThrowableTypeAssert;
 import org.junit.jupiter.api.Test;
@@ -222,14 +223,35 @@ class MergedAnnotationsRepeatableAnnotationTests {
 				"B", "C");
 	}
 
-	private <A extends Annotation> Set<A> getAnnotations(
-			Class<? extends Annotation> container, Class<A> repeatable,
-			SearchStrategy searchStrategy, AnnotatedElement element) {
+	@Test
+	void typeHierarchyAnnotationsWithLocalComposedAnnotationWhoseRepeatableMetaAnnotationsAreFiltered() {
+		Class<WithRepeatedMetaAnnotationsClass> element = WithRepeatedMetaAnnotationsClass.class;
+		SearchStrategy searchStrategy = SearchStrategy.TYPE_HIERARCHY;
+		AnnotationFilter annotationFilter = PeteRepeat.class.getName()::equals;
+
+		Set<PeteRepeat> annotations = getAnnotations(null, PeteRepeat.class, searchStrategy, element, annotationFilter);
+		assertThat(annotations).isEmpty();
+
+		MergedAnnotations mergedAnnotations = MergedAnnotations.from(element, searchStrategy,
+				RepeatableContainers.standardRepeatables(), annotationFilter);
+		Stream<Class<? extends Annotation>> annotationTypes = mergedAnnotations.stream()
+				.map(MergedAnnotation::synthesize)
+				.map(Annotation::annotationType);
+		assertThat(annotationTypes).containsExactly(WithRepeatedMetaAnnotations.class, Noninherited.class, Noninherited.class);
+	}
+
+	private <A extends Annotation> Set<A> getAnnotations(Class<? extends Annotation> container,
+			Class<A> repeatable, SearchStrategy searchStrategy, AnnotatedElement element) {
+
+		return getAnnotations(container, repeatable, searchStrategy, element, AnnotationFilter.PLAIN);
+	}
+
+	private <A extends Annotation> Set<A> getAnnotations(Class<? extends Annotation> container,
+			Class<A> repeatable, SearchStrategy searchStrategy, AnnotatedElement element, AnnotationFilter annotationFilter) {
+
 		RepeatableContainers containers = RepeatableContainers.of(repeatable, container);
-		MergedAnnotations annotations = MergedAnnotations.from(element,
-				searchStrategy, containers, AnnotationFilter.PLAIN);
-		return annotations.stream(repeatable).collect(
-				MergedAnnotationCollectors.toAnnotationSet());
+		MergedAnnotations annotations = MergedAnnotations.from(element, searchStrategy, containers, annotationFilter);
+		return annotations.stream(repeatable).collect(MergedAnnotationCollectors.toAnnotationSet());
 	}
 
 	private void nonRepeatableRequirements(Exception ex) {
@@ -414,4 +436,17 @@ class MergedAnnotationsRepeatableAnnotationTests {
 
 	}
 
+	@Retention(RetentionPolicy.RUNTIME)
+	@PeteRepeat("A")
+	@PeteRepeat("B")
+	@interface WithRepeatedMetaAnnotations {
+	}
+
+	@WithRepeatedMetaAnnotations
+	@PeteRepeat("C")
+	@Noninherited("X")
+	@Noninherited("Y")
+	static class WithRepeatedMetaAnnotationsClass {
+	}
+
 }