request parameter and method binding

[alpha88]

I do not know whether it is possible but i want something like

<f:view>
<h:form>      
    <div>
        <label for="accountId">Type your account id</label>
        <input type="text" name="accountId"/>
    </div>
    <div>
        <label for="amount">Type amount</label>
        <input type="text" name="amount"/>
    </div>
    <div>
        <!--NOTICE IT IS #{accountService.deposit} -->
        <!--BUT I WANT TO USE #{accountService.deposit(accountId, amount)} -->
        <h:commandButton action="#{accountService.deposit}" value="Deposit amount"/>
    </div>
</h:form>
</f:view>

And my service

@Stateless
@Name("accountService")
public class AccountServiceImpl implements AccountService {

    @RequestParemeter
    protected Integer accountId;

    @RequestParemeter
    protected double amount;

    @PersistenceContext
    private EntityManager manager;

    public void deposit() {
        Account account = manager.find(Account.class, accountId);

        account.deposit(amount);
    }

}

It happens i want to use this one instead of shown above

@Stateless
@Name("accountService")
public class AccountServiceImpl implements AccountService {

    @PersistenceContext
    private EntityManager manager;

    public void deposit(Integer accountId, double amount) {
        Account account = manager.find(Account.class, accountId);

        account.deposit(amount);
    }

}

Is it possible ? If so, what should i use - event or something else - to get my goal ?

regards,

[kragoth]

I'm not quite sure why you are having a hard time doing what you want to do.

This is what you have at the moment

<h:commandButton action="#{accountService.deposit}" value="Deposit amount"/>

And all you want to do is pass the request params in so you can do something like this (I havn't tested this, I have just done some googling so it is probably not 100% correct but if you do a bit of reading about requestParameters in EL expressions I'm sure you'll be able to get it to work.)

So.... maybe something like...

<h:commandButton action="#{accountService.deposit(param.accountId, param.amount)}" value="Deposit amount"/>

Here I am accessing the request params by using the expression param.paramId

I found this info HERE

If that way doesn't work then maybe accessing the param like this might.

#{param['accountId']}

This idea is from HERE

I hope this helps.

[asookazian]

30.1. Parameterized Method Bindings

Standard EL assumes that any parameters to a method expression will be provided by Java code. This means that a method with parameters cannot be used as a JSF method binding. Seam provides an enhancement to the EL that allows parameters to be included in a method expression itself. This applies to any Seam method expression, including any JSF method binding, for example:

<h:commandButton action="#{hotelBooking.bookHotel(hotel)}" value="Book Hotel"/>

30.1.1. Usage

Parameters are surrounded by parentheses, and separated by commas:

<h:commandButton action="#{hotelBooking.bookHotel(hotel, user)}" value="Book Hotel"/>

http://docs.jboss.org/seam/2.0.0.GA/reference/en/html/elenhancements.html

[alpha88]

You are right,

When i use param as follows

<h:commandButton action="#{accountService.deposit(param.accountId, param.amount)}" value="Deposit amount"/>

It works fine.

You save me a lot of time.

Congratulations!

[alpha88]

You are right,

When i use param, i can pass request parameter. It works fine!

Congratulations!