public void preInstantiateSingletons() throws BeansException {
if (logger.isInfoEnabled()) {
logger.info("Pre-instantiating singletons in factory [" + this + "]");
}
try {
for (Iterator it = this.beanDefinitionNames.iterator(); it.hasNext(); ) {
String beanName = (String) it.next();
if (containsBeanDefinition(beanName)) {
RootBeanDefinition bd = getMergedBeanDefinition(beanName, false);
if (!bd.isAbstract() && bd.isSingleton() && !bd.isLazyInit()) {
if (bd.hasBeanClass() && FactoryBean.class.isAssignableFrom(bd.getBeanClass())) {
FactoryBean factory = (FactoryBean) getBean(FACTORY_BEAN_PREFIX + beanName);
if (factory.isSingleton()) {
getBean(beanName);
}
} else {
getBean(beanName);
}
}
}
}
} catch (BeansException ex) {
// destroy already created singletons to avoid dangling resources
try {
destroySingletons();
} catch (Throwable ex2) {
logger.error(
"Pre-instantiating singletons failed, "
+ "and couldn't destroy already created singletons",
ex2);
}
throw ex;
}
}
public void preInstantiateSingletons() throws BeansException {
if (logger.isDebugEnabled()) {
logger.debug("Pre-instantiating singletons in factory [" + this + "]");
}
// The superclass's variable by this name is declared private.
String[] beanDefinitionNames = getBeanDefinitionNames();
String beanName = null; // Remember in case of an exception
try {
// for (Iterator it = this.beanDefinitionNames.iterator();
// it.hasNext();) {
for (int i = 0; i < beanDefinitionNames.length; i++) {
beanName = beanDefinitionNames[i];
if (!containsSingleton(beanName) && containsBeanDefinition(beanName)) {
RootBeanDefinition bd = (RootBeanDefinition) getMergedBeanDefinition(beanName);
if (!bd.isAbstract() && bd.isSingleton() && !bd.isLazyInit()) {
if (bd.hasBeanClass() && FactoryBean.class.isAssignableFrom(bd.getBeanClass())) {
FactoryBean factory = (FactoryBean) getBean(FACTORY_BEAN_PREFIX + beanName);
if (factory.isSingleton()) {
getBean(beanName);
}
} else {
getBean(beanName);
}
}
}
}
} catch (BeansException ex) {
// Destroy already created singletons to avoid dangling resources.
logger.error(
"Failed to preinstantiate the singleton named "
+ beanName
+ ". Destroying all Spring beans.",
ex);
try {
destroySingletons();
} catch (Exception ex2) {
logger.error(
"Pre-instantiating singletons failed, and couldn't destroy already created singletons: "
+ ex2,
ex2);
}
throw ex;
}
}
@Test
public void testBeanNameAutoProxyCreatorWithFactoryBeanProxy() {
StaticApplicationContext sac = new StaticApplicationContext();
sac.registerSingleton("testInterceptor", TestInterceptor.class);
RootBeanDefinition proxyCreator = new RootBeanDefinition(BeanNameAutoProxyCreator.class);
proxyCreator.getPropertyValues().add("interceptorNames", "testInterceptor");
proxyCreator
.getPropertyValues()
.add("beanNames", "singletonToBeProxied,&singletonFactoryToBeProxied");
sac.getDefaultListableBeanFactory()
.registerBeanDefinition("beanNameAutoProxyCreator", proxyCreator);
RootBeanDefinition bd = new RootBeanDefinition(TestBean.class);
sac.getDefaultListableBeanFactory().registerBeanDefinition("singletonToBeProxied", bd);
sac.registerSingleton("singletonFactoryToBeProxied", DummyFactory.class);
sac.refresh();
ITestBean singletonToBeProxied = (ITestBean) sac.getBean("singletonToBeProxied");
assertTrue(Proxy.isProxyClass(singletonToBeProxied.getClass()));
TestInterceptor ti = (TestInterceptor) sac.getBean("testInterceptor");
int initialNr = ti.nrOfInvocations;
singletonToBeProxied.getName();
assertEquals(initialNr + 1, ti.nrOfInvocations);
FactoryBean<?> factory = (FactoryBean<?>) sac.getBean("&singletonFactoryToBeProxied");
assertTrue(Proxy.isProxyClass(factory.getClass()));
TestBean tb = (TestBean) sac.getBean("singletonFactoryToBeProxied");
assertFalse(AopUtils.isAopProxy(tb));
assertEquals(initialNr + 3, ti.nrOfInvocations);
tb.getAge();
assertEquals(initialNr + 3, ti.nrOfInvocations);
}
