fatih soylemez

hello,
can make use of <ui:repeat> to iterate data of a list.

Hello,
I have a few questions that i hope you can answer.
I am developing a project with Seam JPA and Tomcat(i dont use ejb3).It is not a simple application that i will only use CRUD operations on database.
And i like to use DAO pattern which makes code more readable,reusable etc.

My first questions are,

is it not good/useless to use service and dao layer with Seam? (Service,ServiceImpl,DAO,HibernateDAO)

if i use DAOs , do i have to use EntityManager inside them?What happens if i use EntityManager what happens if i dont?

how can i inject Services/DAOs into the session? i was using Service,Repository annotations to declare them and Autowired
annotations to get them from the session while using Spring.is there any similar way?


For example i have the following code,
@Name("menuCategoryDao") @Scope(ScopeType.EVENT) @AutoCreate public class MenuCategoryDAO extends AbstractDAO<MenuCategory, Long>{ }
but when i call MenuCategoryDAO from an Action class with @In annotation,it comes null.
Do i have to make any other declarations in the components.xml or somewhere else?


Can someone give me example of implementing DAOs without using EntityManager and using them
into Action classes.

too late..i already got a headache:)
i have just figured that commandlink does work if
i get it out of the datagrid!!seems like this problem is
specific to the datagrid.

i guess that is a common problem..Can anyone recommend a good idea other than declaring the
bean in the session scope?

..I wish i could..As a noob,i used an iterator to save the data into a list,and sent this list
to a datagrid.
<rich:panel> <h:form> <rich:dataGrid value="#{searchBean.resultset}" var="movie" columns="1" elements="5"> <rich:panel> <f:facet name="header"> <h:outputText value=""></h:outputText> </f:facet> <h:panelGrid columns="2" styleClass="pdf" columnClasses=" ,sutun"> <h:outputLink id="link1" value="guestMovie.jsf"> <f:param name="movieId" value="#{movie.movieId}" /> <h:graphicImage value="#{movie.posterUrl}"/> </h:outputLink> <h:column> <h:outputText value="Original Title:" styleClass="innerh"></h:outputText> <h:outputText value="#{movie.movieOrjname}" /> <br></br> <h:outputText value="Translated Title:" styleClass="innerh"></h:outputText> <h:outputText value="#{movie.movieTname}" /><br></br> <h:outputText value="Genre:" styleClass="innerh"></h:outputText> <h:outputText value="#{movie.category}"/><br></br> <h:outputText value="Country:" styleClass="innerh"></h:outputText> <h:outputText value="#{movie.country}" /><br></br> <h:outputText value="Rating:" styleClass="innerh"></h:outputText> <h:outputText value="#{movie.rating}" /> </h:column> </h:panelGrid> </rich:panel> <f:facet name="footer"> <rich:datascroller></rich:datascroller> </f:facet> </rich:dataGrid> </h:form> </rich:panel>


Now my problem is,i want to navigate to the movie page whose image is clicked.
But the choosen movie whose image is clicked,is an element of the list.
I can neither directly get the data of that object(Movie),nor take it from the list(i dont know its index) on the next page.
I need to send the clicked movie's id into a movieBean class method and retrieve the info of
that movie to use on the next page.Can anyone suggest me an idea ?

Thank you..

So ,i assume that using an iterator to migrate the data into a List
would be a more costly solution.I know this will sound silly but
can you give me a short explanation about how to utilize from
that ListFromCollection class since it has no method which
gets a Set as an argument and returns a List.

Thank you

Hi,
I am using the classes that Hibernate-tools created for me.(i reverse engineered my database)
It seems like Hibernate stores the entries that are mapped to another one as a foreign key
in a Set(HashSet).And i am guessing that it would be better to have them stored in a List
or ArrayList since i will display those data in a table using JSF,and with Lists reaching the data
easier(using get(index)).(i dont know if i can send a Set into a datatable or not).

According to the situation,what do you advice me?Should i change Set variables to List's?
Would that make a problem?

Thank you for your answers..

That worked,thank you for the quick answer!

Hi,as a person who is new to jsf world,i am dealing with an issue that is probably very simple.

There appears a warning beside my commandButton creation ,telling

"Tag h:commandButton is missing required parent tag "form" (http://java.sun.com/jsf/html)".

And i guess thats why my button doesnt work.

Here is the code :
<form> <h:selectOneMenu id="cars" value="#{searchBean.searchclass}"> <f:selectItems value="#{searchBean.options}" /> </h:selectOneMenu> <input id="searchBox" type="text"> <h:commandButton id="go" type="submit" value="GO" actionListener="#{searchBean.action}" /> </form>

Thank you for your answers!