html:link LookupDispatchAction

[Ronald Rotteveel <r....@its.tudelft.nl>]

Dear struts users,

In every webapplication there are links. As I read in "Struts in Action",
it's better to make links with actions.

I'm now working on some part of the application where we have to do a lot of
CRUD actions, so I want to use the LookupDispatchAction. Inserting/creating
records in the database works great now, but I also would like to use the
LookupDispatchAction for initiating the forms I'm using, but then without
having to use submit buttons.

Therefore I read some postings on this mailinglist that discussed the
opportunity to use the html:link tag to do this. Unfortunately I can't get
it working, so if somebody would have a look at the code I would be very
happy!

#### LookupDispatchAction (CustomerLookupDispatchAction) ###
public Map getKeyMethodMap()
{
 Map map = new HashMap();
 map.put("customer.form.button.initcreateform", "initCreateForm");
 map.put("customer.form.button.initupdateform", "initUpdateForm");
 map.put("form.button.create", "create");
 map.put("form.button.read", "read");
 map.put("form.button.update", "update");
 map.put("form.button.delete", "delete");

 return map;
}

public ActionForward initCreateForm(
 ActionMapping mapping,
 ActionForm form,
 HttpServletRequest request,
 HttpServletResponse response)
 throws Exception
{
 resetToken(request);
 removeFormBean(mapping,request);

 return mapping.findForward("form");
}

### JSP code (part of it) ###
<bean:define id="CustomerCreateForm"
value="customer.form.button.initcreateform"/>
<html:link action="/maintenance/lookupDispatchCustomerSubmit.do"
paramId="method" paramName="CustomerCreateForm" styleClass="tree"
transaction="true"><bean:message key="customer.form.button.initcreateform"
/></html:link>

### application.resources ###
customer.form.button.initcreateform=Add customer
customer.form.button.initupdateform=Update customer

### struts-config.xml ###
<action input=".maintenance.CustomerForm" name="CustomerForm"
   parameter="method" path="/maintenance/lookupDispatchCustomerSubmit"
   scope="request"
   type="com.mit.op.actions.maintenance.CustomerLookupDispatchAction"
validate="true">
   <forward name="form" path="/maintenance/CustomerForm.do"
redirect="false"/>
</action>


Any suggestions are welcome!


Thanks in advance!


Beste regards,

Ronald Rotteveel


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Re: html:link LookupDispatchAction

[Kris Schneider <kr...@dotech.com>]

<bean:define id="initCreateForm">
  <bean:message key="customer.form.button.initcreateform"/>
</bean:define>
<html:link action="/maintenance/lookupDispatchCustomerSubmit"
           paramId="method"
           paramName="initCreateForm"
           styleClass="tree"
           transaction="true">
  <bean:write name="initCreateForm"/>
</html:link>

Another suggestion. Unless the map returned by getKeyMethodMap is dynamic,
create it once as a static field:

private static final Map KEY_METHOD_MAP = new HashMap();
static {
  // populate map
}

protected Map getKeyMethodMap() {
  return KEY_METHOD_MAP;
}

Quoting Ronald Rotteveel <r....@its.tudelft.nl>:

> Dear struts users,
> 
> In every webapplication there are links. As I read in "Struts in Action",
> it's better to make links with actions.
> 
> I'm now working on some part of the application where we have to do a lot
> of
> CRUD actions, so I want to use the LookupDispatchAction. Inserting/creating
> records in the database works great now, but I also would like to use the
> LookupDispatchAction for initiating the forms I'm using, but then without
> having to use submit buttons.
> 
> Therefore I read some postings on this mailinglist that discussed the
> opportunity to use the html:link tag to do this. Unfortunately I can't get
> it working, so if somebody would have a look at the code I would be very
> happy!
> 
> #### LookupDispatchAction (CustomerLookupDispatchAction) ###
> public Map getKeyMethodMap()
> {
>  Map map = new HashMap();
>  map.put("customer.form.button.initcreateform", "initCreateForm");
>  map.put("customer.form.button.initupdateform", "initUpdateForm");
>  map.put("form.button.create", "create");
>  map.put("form.button.read", "read");
>  map.put("form.button.update", "update");
>  map.put("form.button.delete", "delete");
> 
>  return map;
> }
> 
> public ActionForward initCreateForm(
>  ActionMapping mapping,
>  ActionForm form,
>  HttpServletRequest request,
>  HttpServletResponse response)
>  throws Exception
> {
>  resetToken(request);
>  removeFormBean(mapping,request);
> 
>  return mapping.findForward("form");
> }
> 
> ### JSP code (part of it) ###
> <bean:define id="CustomerCreateForm"
> value="customer.form.button.initcreateform"/>
> <html:link action="/maintenance/lookupDispatchCustomerSubmit.do"
> paramId="method" paramName="CustomerCreateForm" styleClass="tree"
> transaction="true"><bean:message key="customer.form.button.initcreateform"
> /></html:link>
> 
> ### application.resources ###
> customer.form.button.initcreateform=Add customer
> customer.form.button.initupdateform=Update customer
> 
> ### struts-config.xml ###
> <action input=".maintenance.CustomerForm" name="CustomerForm"
>    parameter="method" path="/maintenance/lookupDispatchCustomerSubmit"
>    scope="request"
>    type="com.mit.op.actions.maintenance.CustomerLookupDispatchAction"
> validate="true">
>    <forward name="form" path="/maintenance/CustomerForm.do"
> redirect="false"/>
> </action>
> 
> 
> Any suggestions are welcome!
> 
> 
> Thanks in advance!
> 
> 
> Beste regards,
> 
> Ronald Rotteveel

-- 
Kris Schneider <ma...@dotech.com>
D.O.Tech       <http://www.dotech.com/>

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