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Good example of EJB interface for CRUD operations

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  Good example of EJB interface for CRUD operations pavelkastornii@gmail.com - 2015-04-27 10:00 -0700
    Re: Good example of EJB interface for CRUD operations Robert Klemme <shortcutter@googlemail.com> - 2015-04-27 21:19 +0200
      Re: Good example of EJB interface for CRUD operations pavelkastornii@gmail.com - 2015-04-27 12:49 -0700
        Re: Good example of EJB interface for CRUD operations pavelkastornii@gmail.com - 2015-05-02 00:32 -0700

#31615 — Good example of EJB interface for CRUD operations

Can anyone provide a good example of EJB interface for not trivial CRUD operations, assuming the following:

    There are two or more tables (for example persons,personContacts) with which this EJB work.
    There are dynamic operations (like select(List<String> columnAliases,List<String> columnValues)) and static operations (like select(int id)).
    There full (updatePerson(Person person,int id)) and particial operation (updatePersonName(String name,int id)).

    Any help (references, links) is much appreciated.

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#31617

On 27.04.2015 19:00, pavelkastornii@gmail.com wrote:
> Can anyone provide a good example of EJB interface for not trivial
> CRUD operations, assuming the following:
>
> There are two or more tables (for example persons,personContacts)
> with which this EJB work. There are dynamic operations (like
> select(List<String> columnAliases,List<String> columnValues)) and
> static operations (like select(int id)).

What do you mean by "dynamic operations"?  Are you talking about queries 
whose conditions need to be compiled at runtime?

I also find the interface odd: apparently you match column names and 
values by index in two lists.  Why are you not using a Map for that?

> There full
> (updatePerson(Person person,int id)) and particial operation
> (updatePersonName(String name,int id)).

Wouldn't you just set property "name" of Pojo Person and commit?

Kind regards

	robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

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#31618

понедельник, 27 апреля 2015 г., 23:19:41 UTC+4 пользователь Robert Klemme написал:
> On 27.04.2015 19:00, p@gmail.com wrote:
> > Can anyone provide a good example of EJB interface for not trivial
> > CRUD operations, assuming the following:
> >
> > There are two or more tables (for example persons,personContacts)
> > with which this EJB work. There are dynamic operations (like
> > select(List<String> columnAliases,List<String> columnValues)) and
> > static operations (like select(int id)).
> 
> What do you mean by "dynamic operations"?  Are you talking about queries 
> whose conditions need to be compiled at runtime?
> 
> I also find the interface odd: apparently you match column names and 
> values by index in two lists.  Why are you not using a Map for that?
> 
> > There full
> > (updatePerson(Person person,int id)) and particial operation
> > (updatePersonName(String name,int id)).
> 
> Wouldn't you just set property "name" of Pojo Person and commit?
> 
> Kind regards
> 
> 	robert
> 
> -- 
> remember.guy do |as, often| as.you_can - without end
> http://blog.rubybestpractices.com/

By dynamic I mean those, which conditions may vary - one we use some columns another time we use different columns. In comparison with those methods which have fixed conditions (select (int id)). I unserstand that that example seems to be strange as I wanted to show the idea.

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#31639

No one knows?

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