ServiceReferenceInjectionBeanPostProcessor.java 文件源码

public PropertyValues postProcessPropertyValues(PropertyValues pvs, PropertyDescriptor[] pds, Object bean,
        String beanName) throws BeansException {

    MutablePropertyValues newprops = new MutablePropertyValues(pvs);
    for (PropertyDescriptor pd : pds) {
        ServiceReference s = hasServiceProperty(pd);
        if (s != null && !pvs.contains(pd.getName())) {
            try {
                if (logger.isDebugEnabled())
                    logger.debug("Processing annotation [" + s + "] for [" + beanName + "." + pd.getName() + "]");
                FactoryBean importer = getServiceImporter(s, pd.getWriteMethod(), beanName);
                // BPPs are created in stageOne(), even though they are run in stageTwo(). This check means that
                // the call to getObject() will not fail with ServiceUnavailable. This is safe to do because
                // ServiceReferenceDependencyBeanFactoryPostProcessor will ensure that mandatory services are
                // satisfied before stageTwo() is run.
                if (bean instanceof BeanPostProcessor) {
                    ImporterCallAdapter.setCardinality(importer, Availability.OPTIONAL);
                }
                newprops.addPropertyValue(pd.getName(), importer.getObject());
            }
            catch (Exception e) {
                throw new FatalBeanException("Could not create service reference", e);
            }
        }
    }
    return newprops;
}