PersistenceAnnotationBeanPostProcessor.java 文件源码

public PersistenceElement(Member member, AnnotatedElement ae, PropertyDescriptor pd) {
    super(member, pd);
    PersistenceContext pc = ae.getAnnotation(PersistenceContext.class);
    PersistenceUnit pu = ae.getAnnotation(PersistenceUnit.class);
    Class<?> resourceType = EntityManager.class;
    if (pc != null) {
        if (pu != null) {
            throw new IllegalStateException("Member may only be annotated with either " +
                    "@PersistenceContext or @PersistenceUnit, not both: " + member);
        }
        Properties properties = null;
        PersistenceProperty[] pps = pc.properties();
        if (!ObjectUtils.isEmpty(pps)) {
            properties = new Properties();
            for (PersistenceProperty pp : pps) {
                properties.setProperty(pp.name(), pp.value());
            }
        }
        this.unitName = pc.unitName();
        this.type = pc.type();
        this.synchronizedWithTransaction = (synchronizationAttribute == null ||
                "SYNCHRONIZED".equals(ReflectionUtils.invokeMethod(synchronizationAttribute, pc).toString()));
        this.properties = properties;
    }
    else {
        resourceType = EntityManagerFactory.class;
        this.unitName = pu.unitName();
    }
    checkResourceType(resourceType);
}