PersistenceUnitManagerHelper.java 文件源码

public MutablePersistenceUnitInfo createUnit(Class<? extends Annotation> qualifier, String unitName) {
    ClassLoader classLoader = holder.getCurrentReloadableClassLoader();
    MutablePersistenceUnitInfo result = new MutablePersistenceUnitInfo();
    result.setExcludeUnlistedClasses(true);
    result.setValidationMode(ValidationMode.NONE);
    result.setPersistenceUnitName(unitName);
    result.setSharedCacheMode(SharedCacheMode.ENABLE_SELECTIVE);

    try {
        result.setPersistenceUnitRootUrl(new URL("http://foo.foo"));
    } catch (MalformedURLException e) {
        throw new RuntimeException(e);
    }

    result.addProperty(PersistenceUnitProperties.SESSION_CUSTOMIZER, CompositeSessionCustomizer.class.getName());

    // search for entities
    {
        Set<Class<?>> jpaAnnotations = new HashSet<>(
                Arrays.asList(Entity.class, MappedSuperclass.class, Embeddable.class));
        for (ClassNode classNode : index.getAllNodes()) {
            String className = Type.getObjectType(classNode.name).getClassName();

            if (classNode.visibleAnnotations == null)
                continue;

            boolean jpaAnnotationFound = false;
            for (AnnotationNode annotation : classNode.visibleAnnotations) {
                Class<?> annotationClass = AsmUtil.loadClass(Type.getType(annotation.desc), classLoader);

                // test if the annotation is one of the jpa annotations
                if (jpaAnnotations.contains(annotationClass))
                    jpaAnnotationFound = true;

            }

            if (jpaAnnotationFound && isPartOfPU(classNode, qualifier, classLoader)) {
                result.addManagedClassName(className);
            }
        }
    }

    // search converters
    {
        index.getAllChildren(AttributeConverter.class).stream()
                .filter(node -> isPartOfPU(node, qualifier, classLoader))
                .map(node -> AsmUtil.loadClass(Type.getObjectType(node.name), classLoader)).forEach(cls -> {
                    Converter converter = cls.getAnnotation(Converter.class);
                    if (converter != null && converter.autoApply())
                        result.addManagedClassName(cls.getName());
                });
    }
    return result;
}