Add resolveAutowireCandidates variant with includeNonSingletons and allowEagerInit

Closes gh-34591

Author: jhoeller

spring-beans/src/main/java/org/springframework/beans/factory/support/SimpleAutowireCandidateResolver.java

@@ -66,10 +66,40 @@ public AutowireCandidateResolver cloneIfNecessary() {
 	 * @see org.springframework.beans.factory.config.BeanDefinition#isAutowireCandidate()
 	 * @see AbstractBeanDefinition#isDefaultCandidate()
 	 */
-	@SuppressWarnings("unchecked")
 	public static <T> Map<String, T> resolveAutowireCandidates(ConfigurableListableBeanFactory lbf, Class<T> type) {
+		return resolveAutowireCandidates(lbf, type, true, true);
+	}
+
+	/**
+	 * Resolve a map of all beans of the given type, also picking up beans defined in
+	 * ancestor bean factories, with the specific condition that each bean actually
+	 * has autowire candidate status. This matches simple injection point resolution
+	 * as implemented by this {@link AutowireCandidateResolver} strategy, including
+	 * beans which are not marked as default candidates but excluding beans which
+	 * are not even marked as autowire candidates.
+	 * @param lbf the bean factory
+	 * @param type the type of bean to match
+	 * @param includeNonSingletons whether to include prototype or scoped beans too
+	 * or just singletons (also applies to FactoryBeans)
+	 * @param allowEagerInit whether to initialize <i>lazy-init singletons</i> and
+	 * <i>objects created by FactoryBeans</i> (or by factory methods with a
+	 * "factory-bean" reference) for the type check. Note that FactoryBeans need to be
+	 * eagerly initialized to determine their type: So be aware that passing in "true"
+	 * for this flag will initialize FactoryBeans and "factory-bean" references.
+	 * @return the Map of matching bean instances, or an empty Map if none
+	 * @throws BeansException if a bean could not be created
+	 * @since 6.2.5
+	 * @see BeanFactoryUtils#beansOfTypeIncludingAncestors(ListableBeanFactory, Class, boolean, boolean)
+	 * @see org.springframework.beans.factory.config.BeanDefinition#isAutowireCandidate()
+	 * @see AbstractBeanDefinition#isDefaultCandidate()
+	 */
+	@SuppressWarnings("unchecked")
+	public static <T> Map<String, T> resolveAutowireCandidates(ConfigurableListableBeanFactory lbf, Class<T> type,
+			boolean includeNonSingletons, boolean allowEagerInit) {
+
 		Map<String, T> candidates = new LinkedHashMap<>();
-		for (String beanName : BeanFactoryUtils.beanNamesForTypeIncludingAncestors(lbf, type)) {
+		for (String beanName : BeanFactoryUtils.beanNamesForTypeIncludingAncestors(lbf, type,
+				includeNonSingletons, allowEagerInit)) {
 			if (AutowireUtils.isAutowireCandidate(lbf, beanName)) {
 				Object beanInstance = lbf.getBean(beanName);
 				if (!(beanInstance instanceof NullBean)) {