DATACMNS-693 - AbstractMappingContext now uses Spring's BeanUtils to lookup PropertyDescriptors.

Instead of manually using Introspector.getBeanInfo(…) we now use Spring's BeanUtils.getPropertyDescriptors(…) to benefit from some caching of descriptor instances as well as advanced support for fluent setters, default methods etc.

Original pull request: #122.

Author: Tomasz Wysocki

src/main/java/org/springframework/data/mapping/context/AbstractMappingContext.java

@@ -15,9 +15,6 @@
  */
 package org.springframework.data.mapping.context;
 
-import java.beans.BeanInfo;
-import java.beans.IntrospectionException;
-import java.beans.Introspector;
 import java.beans.PropertyDescriptor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
@@ -34,6 +31,8 @@
 import java.util.concurrent.locks.Lock;
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 
+import org.springframework.beans.BeanUtils;
+import org.springframework.beans.BeansException;
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.context.ApplicationEventPublisherAware;
@@ -63,6 +62,7 @@
  * @author Oliver Gierke
  * @author Michael Hunger
  * @author Thomas Darimont
+ * @author Tomasz Wysocki
  */
 public abstract class AbstractMappingContext<E extends MutablePersistentEntity<?, P>, P extends PersistentProperty<P>>
 		implements MappingContext<E, P>, ApplicationEventPublisherAware, InitializingBean {
@@ -281,10 +281,10 @@ protected E addPersistentEntity(TypeInformation<?> typeInformation) {
 			// Eagerly cache the entity as we might have to find it during recursive lookups.
 			persistentEntities.put(typeInformation, entity);
 
-			BeanInfo info = Introspector.getBeanInfo(type);
+			PropertyDescriptor[] pds = BeanUtils.getPropertyDescriptors(type);
 
 			final Map<String, PropertyDescriptor> descriptors = new HashMap<String, PropertyDescriptor>();
-			for (PropertyDescriptor descriptor : info.getPropertyDescriptors()) {
+			for (PropertyDescriptor descriptor : pds) {
 				descriptors.put(descriptor.getName(), descriptor);
 			}
 
@@ -308,7 +308,7 @@ protected E addPersistentEntity(TypeInformation<?> typeInformation) {
 
 			return entity;
 
-		} catch (IntrospectionException e) {
+		} catch (BeansException e) {
 			throw new MappingException(e.getMessage(), e);
 		} finally {
 			write.unlock();