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Avoid Scope.registerDestructionCallback for inner beans in case of scope mismatch

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This commit refines getMergedBeanDefinition's scope adaptation algorithm for inner beans, never leaving a custom scope within a containing bean of a different scope. The inner bean's scope will either be aligned with the containing bean's scope (matching the effective state) or be switched to prototype in case of an outer singleton (indicating that no singleton state management is desired).

Issue: SPR-13739
This commit is contained in:
Juergen Hoeller
2015-11-30 20:10:26 +01:00
parent 4755467cca
commit 7104076e19
2 changed files with 84 additions and 15 deletions
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17
spring-beans/src/main/java/org/springframework/beans/factory/support/AbstractBeanFactory.java
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@@ -1062,7 +1062,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
String scopeName = mbd.getScope();
Scope scope = this.scopes.get(scopeName);
if (scope == null) {
throw new IllegalStateException("No Scope SPI registered for scope '" + scopeName + "'");
throw new IllegalStateException("No Scope SPI registered for scope name '" + scopeName + "'");
}
Object bean = scope.remove(beanName);
if (bean != null) {
@@ -1251,15 +1251,14 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
// Set default singleton scope, if not configured before.
if (!StringUtils.hasLength(mbd.getScope())) {
mbd.setScope(RootBeanDefinition.SCOPE_SINGLETON);
mbd.setScope(BeanDefinition.SCOPE_SINGLETON);
}
// A bean contained in a non-singleton bean cannot be a singleton itself.
// Let's correct this on the fly here, since this might be the result of
// parent-child merging for the outer bean, in which case the original inner bean
// definition will not have inherited the merged outer bean's singleton status.
if (containingBd != null && !containingBd.isSingleton() && mbd.isSingleton()) {
mbd.setScope(containingBd.getScope());
// Check for a mismatch between an inner bean's scope and its containing
// bean's scope: For example, a bean contained in a non-singleton bean
// cannot be a singleton itself. Let's correct this on the fly here.
if (containingBd != null && !mbd.isPrototype() && !mbd.getScope().equals(containingBd.getScope())) {
mbd.setScope(containingBd.isSingleton() ? BeanDefinition.SCOPE_PROTOTYPE : containingBd.getScope());
}
// Only cache the merged bean definition if we're already about to create an
@@ -1638,7 +1637,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
// A bean with a custom scope...
Scope scope = this.scopes.get(mbd.getScope());
if (scope == null) {
throw new IllegalStateException("No Scope registered for scope '" + mbd.getScope() + "'");
throw new IllegalStateException("No Scope registered for scope name '" + mbd.getScope() + "'");
}
scope.registerDestructionCallback(beanName,
new DisposableBeanAdapter(bean, beanName, mbd, getBeanPostProcessors(), acc));