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 String[] getBeanNamesForType(
Class type, boolean includePrototypes, boolean includeFactoryBeans) {
List result = new ArrayList();
// Check all bean definitions.
for (Iterator it = this.beanDefinitionNames.iterator(); it.hasNext(); ) {
String beanName = (String) it.next();
RootBeanDefinition rbd = getMergedBeanDefinition(beanName, false);
// Only check bean definition if it is complete.
if (!rbd.isAbstract()) {
// In case of FactoryBean, match object created by FactoryBean.
boolean isFactoryBean =
rbd.hasBeanClass() && FactoryBean.class.isAssignableFrom(rbd.getBeanClass());
if (isFactoryBean || rbd.getFactoryBeanName() != null) {
if (includeFactoryBeans
&& (includePrototypes || isSingleton(beanName))
&& isBeanTypeMatch(beanName, type)) {
result.add(beanName);
// Match found for this bean: do not match FactoryBean itself anymore.
continue;
}
// We're done for anything but a full FactoryBean.
if (!isFactoryBean) {
continue;
}
// In case of FactoryBean, try to match FactoryBean itself next.
beanName = FACTORY_BEAN_PREFIX + beanName;
}
// Match raw bean instance (might be raw FactoryBean).
if ((includePrototypes || rbd.isSingleton()) && isBeanTypeMatch(beanName, type)) {
result.add(beanName);
}
}
}
// Check singletons too, to catch manually registered singletons.
String[] singletonNames = getSingletonNames();
for (int i = 0; i < singletonNames.length; i++) {
String beanName = singletonNames[i];
// Only check if manually registered.
if (!containsBeanDefinition(beanName)) {
// In case of FactoryBean, match object created by FactoryBean.
if (isFactoryBean(beanName)) {
if (includeFactoryBeans
&& (includePrototypes || isSingleton(beanName))
&& isBeanTypeMatch(beanName, type)) {
result.add(beanName);
// Match found for this bean: do not match FactoryBean itself anymore.
continue;
}
// In case of FactoryBean, try to match FactoryBean itself next.
beanName = FACTORY_BEAN_PREFIX + beanName;
}
// Match raw bean instance (might be raw FactoryBean).
if (isBeanTypeMatch(beanName, type)) {
result.add(beanName);
}
}
}
return (String[]) result.toArray(new String[result.size()]);
}