/**
* Returns the name of the Bean as registered to Spring. Throws IllegalState exception if none or
* more than one beans are found.
*
* @param ctx spring application context
* @param clazz bean class
* @param required true if the value is required
* @throws IllegalStateException
* @return spring name of the bean
*/
private String getBeanNameOfClass(
final ApplicationContext ctx, final Class<?> clazz, final boolean required) {
// get the list of all possible matching beans
List<String> names =
new ArrayList<String>(
Arrays.asList(BeanFactoryUtils.beanNamesForTypeIncludingAncestors(ctx, clazz)));
// filter out beans that are not candidates for autowiring
if (ctx instanceof AbstractApplicationContext) {
Iterator<String> it = names.iterator();
while (it.hasNext()) {
final String possibility = it.next();
BeanDefinition beanDef =
getBeanDefinition(((AbstractApplicationContext) ctx).getBeanFactory(), possibility);
if (BeanFactoryUtils.isFactoryDereference(possibility)
|| possibility.startsWith("scopedTarget.")
|| (beanDef != null && !beanDef.isAutowireCandidate())) {
it.remove();
}
}
}
if (names.isEmpty()) {
if (required) {
throw new IllegalStateException("bean of type [" + clazz.getName() + "] not found");
}
return null;
} else if (names.size() > 1) {
if (ctx instanceof AbstractApplicationContext) {
List<String> primaries = new ArrayList<String>();
for (String name : names) {
BeanDefinition beanDef =
getBeanDefinition(((AbstractApplicationContext) ctx).getBeanFactory(), name);
if (beanDef instanceof AbstractBeanDefinition) {
if (beanDef.isPrimary()) {
primaries.add(name);
}
}
}
if (primaries.size() == 1) {
return primaries.get(0);
}
}
StringBuilder msg = new StringBuilder();
msg.append("More than one bean of type [");
msg.append(clazz.getName());
msg.append("] found, you have to specify the name of the bean ");
msg.append(
"(@SpringBean(name=\"foo\")) or (@Named(\"foo\") if using @javax.inject classes) in order to resolve this conflict. ");
msg.append("Matched beans: ");
msg.append(Strings.join(",", names.toArray(new String[names.size()])));
throw new IllegalStateException(msg.toString());
} else {
return names.get(0);
}
}
private BeanDefinitionHolder getDataSourceBeanDefinition(
ConfigurableListableBeanFactory beanFactory) {
String[] beanNames = beanFactory.getBeanNamesForType(DataSource.class);
if (ObjectUtils.isEmpty(beanNames)) {
logger.warn("No DataSource beans found, " + "embedded version will not be used");
}
if (beanNames.length == 1) {
String beanName = beanNames[0];
BeanDefinition beanDefinition = beanFactory.getBeanDefinition(beanName);
return new BeanDefinitionHolder(beanDefinition, beanName);
}
for (String beanName : beanNames) {
BeanDefinition beanDefinition = beanFactory.getBeanDefinition(beanName);
if (beanDefinition.isPrimary()) {
return new BeanDefinitionHolder(beanDefinition, beanName);
}
}
logger.warn("No primary DataSource found, " + "embedded version will not be used");
return null;
}