Questions on s:selectItems

[gus888]

Hi,

It seems that s:selectItems has a bug. If I use "em" entity manager name in the components.xml:

<core:managed-persistence-context name="em"
 persistence-unit-jndi-name="java:/cvnEntityManagerFactory"/>

, and I used following code in converters class:

return ((EntityManager) Component.getInstance("em")).find(
 Category.class, Integer.valueOf(arg2));

then I got the entityManager is null exception. However, after I change "em" to "entityManager", exception disappeared. I have been using "em" for a little long time. Should I have to use "entityManger"?

In addition, I ever read a posting which stated the s:selectItems currently doesn't support h:selectOneRadio. Is it correct? since I cannot get it work. Thanks. I use Seam CVS20070302

[pmuir]

"gus888" wrote:
I used following code in converters class:

return ((EntityManager) Component.getInstance("em")).find(
 Category.class, Integer.valueOf(arg2));

then I got the entityManager is null exception. However, after I change "em" to "entityManager", exception disappeared.

I find this very hard to believe. By entityManager is null you mean you get an NPE? Or are you trying to use the entityconverter with this?

In addition, I ever read a posting which stated the s:selectItems currently doesn't support h:selectOneRadio. Is it correct? since I cannot get it work.

[gus888]

Hi Peter,

Thank you for your reply. Yes, when I use "em" as persistent name, I got an exception "entityManager is null". Then I changed "em" into "entityManager" in components.xml, and also changed the converter code to:

return ((EntityManager)Component.getInstance("entityManager")).find(Category.class, Integer.valueOf(arg2));

then the exception disappeared.

the s:selectItems currently doesn't support h:selectOneRadio.

Sorry I made a stupid mistake, s:selectItems works in h:selectOneRadio. Thank you very much.

[gus888]

"petemuir" wrote:
Or are you trying to use the entityconverter with this?

Peter, I exactly followed the ui example in Seam 1.2.0.
1. added following code in components.xml:

<framework:entity-query name="categories" ejbql="select c from Category c" />

2. created Converters class, and added the convert code as same as the ui example.

[pmuir]

<framework:entity-query name="categories" ejbql="select c from Category c" entity-manager="#{em}"/>

[gus888]

Thank you so much, Peter.

Gus