Avoid stack overflow in case of chained factory-bean references to FactoryBean class

Issue: SPR-14551
(cherry picked from commit 8b5d355)

Author: jhoeller

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -325,8 +325,8 @@ public Object configureBean(Object existingBean, String beanName) throws BeansEx
 	}
 
 	@Override
-	public Object resolveDependency(DependencyDescriptor descriptor, String beanName) throws BeansException {
-		return resolveDependency(descriptor, beanName, null, null);
+	public Object resolveDependency(DependencyDescriptor descriptor, String requestingBeanName) throws BeansException {
+		return resolveDependency(descriptor, requestingBeanName, null, null);
 	}
 
 
@@ -802,10 +802,14 @@ public void doWith(Method method) throws IllegalArgumentException, IllegalAccess
 			if (objectType.value != null) {
 				return objectType.value;
 			}
+			else {
+				// No type found for shortcut FactoryBean instance:
+				// fall back to full creation of the FactoryBean instance.
+				return super.getTypeForFactoryBean(beanName, mbd);
+			}
 		}
 
-		// No type found - fall back to full creation of the FactoryBean instance.
-		return super.getTypeForFactoryBean(beanName, mbd);
+		return null;
 	}
 
 	/**
@@ -824,7 +828,7 @@ protected Object getEarlyBeanReference(String beanName, RootBeanDefinition mbd,
 					SmartInstantiationAwareBeanPostProcessor ibp = (SmartInstantiationAwareBeanPostProcessor) bp;
 					exposedObject = ibp.getEarlyBeanReference(exposedObject, beanName);
 					if (exposedObject == null) {
-						return exposedObject;
+						return null;
 					}
 				}
 			}

spring-orm/src/test/java/org/springframework/orm/jpa/AbstractEntityManagerFactoryIntegrationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -90,7 +90,7 @@ protected int countRowsInTable(EntityManager em, String tableName) {
 	}
 
 
-	static enum Provider {
+	enum Provider {
 
 		ECLIPSELINK, HIBERNATE, OPENJPA
 	}

spring-orm/src/test/resources/org/springframework/orm/jpa/hibernate/hibernate-manager.xml

@@ -30,4 +30,10 @@
 		</property>
 	</bean>
 
+	<bean id="sessionFactory" factory-bean="entityManagerFactory" factory-method="getSessionFactory"/>
+
+	<bean id="hibernateStatistics" factory-bean="sessionFactory" factory-method="getStatistics"/>
+
+	<bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"/>
+
 </beans>