我在许多书籍中读到,在一个层楼层结构中,一层只能使用以下各层提供的服务。 通常使用的等级为:
这意味着,商业层面的服务(包含商业逻辑)只能获得持续存在层提供的服务。
我有一个向用户发送信息的电传服务。 每当物体状况发生重大变化时,必须通知所有相关用户这一变化。 这意味着,确定变革的工商部门必须发出电传服务,发出信息。 但是,电传服务本身处于商业层面,因此,同一层的其他服务不应进入。
因此,我们如何使用电传服务而不违反守则的结构?
投放层(或高层)并不仅仅指电离层,而是消耗系统服务的任何东西。 比如,表列的工作岗位可以排在上层(也许你不想把它称作表层)。 在您的案例中,我觉得“电传服务”应当处于顶级,因为它消耗了该系统的其他服务。 例如,如果你书写网络服务,就应当放在服务层之上,但你可能希望以不同的名称命名。
I am facing a weird problem and it seems to be c3p0 related. I am starting two instances of an app in the same java vm which interact with each other. After some operations "APPARENT DEADLOCK" ...
We can speed up a hibernate app easyly with 2nd level cache using infinispan or ehcache/terracotta,... but ibatis only have a simple interface to implement for caching. And hibernate knows more ...
I m relatively new to hibernate and was wondering if someone could help me out. While I have no issues implementing a normal join on multiple columns in hibernate using the @JoinColumns tag, I m ...
I have a 2 entities in a One-To-Many relationship: OfficeView.java: public class OfficeView implements java.io.Serializable { private Integer officeId; private String addr1; private ...
I wrote a Hibernate interceptor : public class MyInterceptor extends EmptyInterceptor { private boolean isCanal=false; public boolean onSave(Object entity, Serializable arg1, Object[] arg2, String[]...
Methods invoked: 1. Struts Action 2. Service class method (annotated by @Transactional) 3. Xfire webservice call Everything including struts (DelegatingActionProxy) and transactions is configured ...
I have an integration test in my Grails application that fails when I try to save an entity of type Member invitingMember.save(flush: true) This raises the following exception org.hibernate....
Is it possible to implement the following query using Criteria API? select order from ORDER as order,ITEM as item where item.itemID like ITM_01 and item in elements(order.items)
