Re: [OS-webwork] WW2: Is there an elegant way to operate with Mapshtml forms / form processing actions?

[Matt Ho]

I would probably have your action implement ModelDriven as follows:

public abstract EntityActions
    extends ActionSupport
    implements ModelDriven
{
    GenericValue genericValue = new GenericValue();
    // ModelDriven implementation
    public Object getModel() { return this.value ; }
    ...
}
You may have a problem with your use of Maps.  Because Maps aren't 
typed, you're going to get String[] for your values.  For example, given 
the above Action and the following ui widget:

<ui:textfield label="hello" name="username"/>

if we enter savaki for username, then the following will be true in our 
action:

 ....
 public String execute() {
    String values[] = (String[])this.genericValue.get("hello");
    // values[0] will be 'savaki'
 }
 ...
If GenericValue has javabean style setter/getters rather than just 
get/put, you should be ok.

Hope this helps  :)

M

Rene Gielen wrote:
Hi,

Kinda new to WW2/XWork, maybe I'm blind, so tell me if I am ;-)

Here is my problem:
We work in our database driven application with a persistence Manager that 
abstracts records as objects implementing Map interface - manager is OFBiz 
entity engine, for those who might know it...

So, if I want to edit a record and store the result back to db, I have to do 
always the same (web environment):
1. Prepend the edit view with an initialized currentObject (a Map) in context
2. Have a jsp with a form in which inputs are presented for the entries in the 
currentObject the user might change
3. Have a store action to which the form in 2. submits. Store the values 
changed in db again.

The form should read values out of a Map and present them in inputs, ready to 
be changed. But how do I manage to have them dispatched back to the / a Map 
for the store action, including type conversion???

What I tried till now

EntityAction.java:

public abstract class EntityActions extends ActionSupport {

    protected GenericValue currentObject = null; //GenericValue implements Map

    public void setCurrentObject(GenericValue object) {..}

    public GenericValue getCurrentObject() {..}

    ...

    public String edit () {
        // load some GenericValue from db
        // or create an empty one and set it as currentObject
        ..
        return SUCCESS;
    }
    public String store () {
        // store the currentObject, which now should contain the edited
        // values from our web form
        ..
        if (noError) {
            return SUCCESS;
        } else {
            // Do input again to correct values
            return INPUT;
        }
    }
}
xwork.xml:
...
<action name="edit" class="de.aixcept.tse.action.EntityActions" method="edit" 

    <param name="entity">translations</param>
    <result name="success" type="dispatcher">
        <param name="location">/WEB-INF/jsp/admin/translation/edit.jsp</param>
    </result>
    <interceptor-ref name="defaultStack"/>
</action>
<action name="store" class="de.aixcept.tse.action.EntityActions" 
method="store" >
    <param name="entity">translations</param>
    <result name="input" type="dispatcher">
        <param name="location">/WEB-INF/jsp/admin/translation/edit.jsp</param>
    </result>
    <result name="success" type="chain">
        <param name="actionName">edit</param>
    </result>
    <interceptor-ref name="defaultStack"/>
</action>
...

edit.jsp:
..
    <ww:form action="store.action" method="POST" >
        <ww:textfield label="English :" name="???" 
                      value="#currentObject.get('en')" />
        <ww:textfield label="German :" name="???" 
                      value="#currentObject.get('de')" />
        <ww:submit name="storeTrans" />
    </ww:form>
..

I hope I could explain what I mean...

Is it possible to dispatch the form parameters back again to currentObject for 
store action, including type conversion? Such as

Action:

private Long myNumber = null;

public Long getMyNumber()

public void setMyNumber(Long aNumber)

...

form:
<ww:textfield label="My Number :" name="myNumber" />
...

which will do everything automagically when parameters interceptor is in 
place?

Can someone help (if anyone understood what I try to do :-) ??

Regards,
Rene
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