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BeanFactory does not unwrap java.util.Optional for top-level bean 

Issue: SPR-14121
This commit is contained in:
Juergen Hoeller 2016-04-07 14:18:30 +02:00
parent 042d8d0b4c
commit 5c1d3fca15
4 changed files with 80 additions and 50 deletions
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27
spring-beans/src/main/java/org/springframework/beans/AbstractNestablePropertyAccessor.java
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@ -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.
@ -87,10 +87,10 @@ public abstract class AbstractNestablePropertyAccessor extends AbstractPropertyA
}
}
private int autoGrowCollectionLimit = Integer.MAX_VALUE;
/** The wrapped object */
private Object object;
Object wrappedObject;
private String nestedPath = "";
@ -204,23 +204,23 @@ public abstract class AbstractNestablePropertyAccessor extends AbstractPropertyA
public void setWrappedInstance(Object object, String nestedPath, Object rootObject) {
Assert.notNull(object, "Target object must not be null");
if (object.getClass() == javaUtilOptionalClass) {
this.object = OptionalUnwrapper.unwrap(object);
this.wrappedObject = OptionalUnwrapper.unwrap(object);
}
else {
this.object = object;
this.wrappedObject = object;
}
this.nestedPath = (nestedPath != null ? nestedPath : "");
this.rootObject = (!"".equals(this.nestedPath) ? rootObject : this.object);
this.rootObject = (!"".equals(this.nestedPath) ? rootObject : this.wrappedObject);
this.nestedPropertyAccessors = null;
this.typeConverterDelegate = new TypeConverterDelegate(this, this.object);
this.typeConverterDelegate = new TypeConverterDelegate(this, this.wrappedObject);
}
public final Object getWrappedInstance() {
return this.object;
return this.wrappedObject;
}
public final Class<?> getWrappedClass() {
return (this.object != null ? this.object.getClass() : null);
return (this.wrappedObject != null ? this.wrappedObject.getClass() : null);
}
/**
@ -451,7 +451,7 @@ public abstract class AbstractNestablePropertyAccessor extends AbstractPropertyA
}
pv.getOriginalPropertyValue().conversionNecessary = (valueToApply != originalValue);
}
ph.setValue(object, valueToApply);
ph.setValue(this.wrappedObject, valueToApply);
}
catch (TypeMismatchException ex) {
throw ex;
@ -953,8 +953,7 @@ public abstract class AbstractNestablePropertyAccessor extends AbstractPropertyA
tokens.actualName = (actualName != null ? actualName : propertyName);
tokens.canonicalName = tokens.actualName;
if (!keys.isEmpty()) {
tokens.canonicalName +=
PROPERTY_KEY_PREFIX +
tokens.canonicalName += PROPERTY_KEY_PREFIX +
StringUtils.collectionToDelimitedString(keys, PROPERTY_KEY_SUFFIX + PROPERTY_KEY_PREFIX) +
PROPERTY_KEY_SUFFIX;
tokens.keys = StringUtils.toStringArray(keys);
@ -965,8 +964,8 @@ public abstract class AbstractNestablePropertyAccessor extends AbstractPropertyA
@Override
public String toString() {
StringBuilder sb = new StringBuilder(getClass().getName());
if (this.object != null) {
sb.append(": wrapping object [").append(ObjectUtils.identityToString(this.object)).append("]");
if (this.wrappedObject != null) {
sb.append(": wrapping object [").append(ObjectUtils.identityToString(this.wrappedObject)).append("]");
}
else {
sb.append(": no wrapped object set");

63
spring-beans/src/main/java/org/springframework/beans/BeanWrapperImpl.java
View File

@ -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.
@ -133,10 +133,45 @@ public class BeanWrapperImpl extends AbstractNestablePropertyAccessor implements
}
/**
* Set a bean instance to hold, without any unwrapping of {@link java.util.Optional}.
* @param object the actual target object
* @since 4.3
* @see #setWrappedInstance(Object)
*/
public void setBeanInstance(Object object) {
this.wrappedObject = object;
this.typeConverterDelegate = new TypeConverterDelegate(this, this.wrappedObject);
setIntrospectionClass(object.getClass());
}
@Override
public void setWrappedInstance(Object object, String nestedPath, Object rootObject) {
super.setWrappedInstance(object, nestedPath, rootObject);
setIntrospectionClass(getWrappedInstance().getClass());
setIntrospectionClass(getWrappedClass());
}
/**
* Set the class to introspect.
* Needs to be called when the target object changes.
* @param clazz the class to introspect
*/
protected void setIntrospectionClass(Class<?> clazz) {
if (this.cachedIntrospectionResults != null && this.cachedIntrospectionResults.getBeanClass() != clazz) {
this.cachedIntrospectionResults = null;
}
}
/**
* Obtain a lazily initializted CachedIntrospectionResults instance
* for the wrapped object.
*/
private CachedIntrospectionResults getCachedIntrospectionResults() {
Assert.state(getWrappedInstance() != null, "BeanWrapper does not hold a bean instance");
if (this.cachedIntrospectionResults == null) {
this.cachedIntrospectionResults = CachedIntrospectionResults.forClass(getWrappedClass());
}
return this.cachedIntrospectionResults;
}
/**
@ -155,30 +190,6 @@ public class BeanWrapperImpl extends AbstractNestablePropertyAccessor implements
return this.acc;
}
/**
* Set the class to introspect.
* Needs to be called when the target object changes.
* @param clazz the class to introspect
*/
protected void setIntrospectionClass(Class<?> clazz) {
if (this.cachedIntrospectionResults != null &&
!clazz.equals(this.cachedIntrospectionResults.getBeanClass())) {
this.cachedIntrospectionResults = null;
}
}
/**
* Obtain a lazily initializted CachedIntrospectionResults instance
* for the wrapped object.
*/
private CachedIntrospectionResults getCachedIntrospectionResults() {
Assert.state(getWrappedInstance() != null, "BeanWrapper does not hold a bean instance");
if (this.cachedIntrospectionResults == null) {
this.cachedIntrospectionResults = CachedIntrospectionResults.forClass(getWrappedClass());
}
return this.cachedIntrospectionResults;
}
/**
* Convert the given value for the specified property to the latter's type.

4
spring-beans/src/main/java/org/springframework/beans/factory/support/ConstructorResolver.java
View File

@ -272,7 +272,7 @@ class ConstructorResolver {
mbd, beanName, this.beanFactory, constructorToUse, argsToUse);
}
bw.setWrappedInstance(beanInstance);
bw.setBeanInstance(beanInstance);
return bw;
}
catch (Throwable ex) {
@ -592,7 +592,7 @@ class ConstructorResolver {
if (beanInstance == null) {
return null;
}
bw.setWrappedInstance(beanInstance);
bw.setBeanInstance(beanInstance);
return bw;
}
catch (Throwable ex) {

22
spring-beans/src/test/java/org/springframework/beans/factory/DefaultListableBeanFactoryTests.java
View File

@ -31,6 +31,7 @@ import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Optional;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.Callable;
@ -2711,7 +2712,7 @@ public class DefaultListableBeanFactoryTests {
}
@Test
public void resolveEmbeddedValue() throws Exception {
public void resolveEmbeddedValue() {
DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
StringValueResolver r1 = mock(StringValueResolver.class);
StringValueResolver r2 = mock(StringValueResolver.class);
@ -2730,6 +2731,25 @@ public class DefaultListableBeanFactoryTests {
verify(r3, never()).resolveStringValue(isNull(String.class));
}
@Test
public void populatedJavaUtilOptionalBean() {
DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
RootBeanDefinition bd = new RootBeanDefinition(Optional.class);
bd.setFactoryMethodName("of");
bd.getConstructorArgumentValues().addGenericArgumentValue("CONTENT");
bf.registerBeanDefinition("optionalBean", bd);
assertEquals(Optional.of("CONTENT"), bf.getBean(Optional.class));
}
@Test
public void emptyJavaUtilOptionalBean() {
DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
RootBeanDefinition bd = new RootBeanDefinition(Optional.class);
bd.setFactoryMethodName("empty");
bf.registerBeanDefinition("optionalBean", bd);
assertSame(Optional.empty(), bf.getBean(Optional.class));
}
/**
* Test that by-type bean lookup caching is working effectively by searching for a
* bean of type B 10K times within a container having 1K additional beans of type A.