You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@struts.apache.org by Amol Ghotankar <gh...@gmail.com> on 2015/01/23 11:50:35 UTC
Using Struts2 Rest Plugin with deep cascading actions
hi,
I was trying out struts2 rest plugin and found it really cool.
But was just wondering how will this work with action cascading ? i.e
So When using http://localhost/company it goes to companyAction and
executes respective mapped methods
But how do we organize work when we
http://localhost/company/1/locations/2/contact/2/ ???
Will these be methods in same class? Class will grow too big & if not how
does it get mapped to contactAction and pass values their?
How about more complex case where we have
http://localhost/company/1/locations/2/contact/2/order/2/transaction/1/payment
or something like this???
Domain objects are hibernate entities when company has locations has
contacts has orders has transaction has payments?
or should the rest url be something different and simplified? like
http://localhost/order/2/transaction/1/payment but still has issues mapping
things and reusing actions?
Am I missing something in rest plugin?
--
*With Best Regards,*
Amol Ghotankar
Technical Lead
M: +91 9960 980 419 <http://www.cursivetech.com>
RE: Using Struts2 Rest Plugin with deep cascading actions
Posted by Martin Gainty <mg...@hotmail.com>.
the "dynamic namespace assignment" ListPeopleAction example
package org.apache.struts2.showcase.person;
import java.util.ArrayList;
import java.util.List;
import com.opensymphony.xwork2.ActionSupport;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
@ParentPackage("person")
@Namespace(value="listPerson") //theoretically this should change namespace from /person to /listPerson
@Results({
@Result(name="list", location="list-people.action", type="redirect"),
@Result(name="input", location = "list-people.action", type="redirect"),
@Result(name="success", location = "listPerson.jsp", type="redirect")
//produces No result defined for action org.apache.struts2.showcase.person.NewPersonAction and result input
//com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:375)
//@Result(name="input", location="/person/editPerson.jsp"),
})
public class ListPeopleAction extends ActionSupport {
private static final long serialVersionUID = 3608017189783645371L;
PersonManager personManager;
List people = new ArrayList();
public void setPersonManager(PersonManager personManager) {
this.personManager = personManager;
}
public String execute() {
people.addAll(personManager.getPeople());
return SUCCESS;
}
public List getPeople() {
return people;
}
public int getPeopleCount() {
return people.size();
}
}
theoretically listPerson namespace is supposed to replace default assigment of 'person' so lets take a look at behavior once struts-showcase webapp is loaded:
http://localhost:8080/struts2-apps/person
I see the original 2 menu options:
1) Create a new Person
2) List all persons
I want to see if the /listPerson is assigned is working so I click on 2)List all persons and the dispatcher takes me to
http://localhost:8080/struts2-apps/person/listPeople.action
listPeople.action is correct because @Result(name="input", location = "list-people.action", type="redirect")
but the dynamic re-assigment of namespace /person to listPerson has not taken plac
I then correct address bar
http://localhost:8080/struts2-apps/listPerson/listPeople.action
and am displayed 404 by dispatcher
2 possible courses of action
1)redact @Namespace since it doesnt invoke JDKProxy to redirect namespace 'person' to 'listPerson'
2)is there a way to change xwork ObjectFactory to not use ProxyObjectFactory or CGLIB but the JDK Proxy change:
<xwork>
<bean type="com.opensymphony.xwork2.ObjectFactory" name="default" class="com.opensymphony.xwork2.ProxyObjectFactory" />
to a factory which will implement JDK Proxy e.g:
// Implement interface
Class<?> clazz = Class.forName("Namespace");
Object listenerInstance = Proxy.newProxyInstance(clazz.getClassLoader(), new Class<?>[]{clazz}, new InvocationHandler() {
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if(method.getName().equals("onReceive")){
System.out.println("ARGS: " + (Integer)args[0] + ", " + (Integer)args[1]);
return 1;
}
else return -1;
}
});
Thoughts?
Martin
-------------------------------------------------------------------------------------------------------------
The key to prevent a hacked email account is to change password more than every 5 years..
> From: mgainty@hotmail.com
> To: user@struts.apache.org
> Subject: RE: Using Struts2 Rest Plugin with deep cascading actions
> Date: Sat, 24 Jan 2015 18:38:43 -0500
>
>
>
>
> > Date: Sat, 24 Jan 2015 15:24:49 +0530
> > Subject: Re: Using Struts2 Rest Plugin with deep cascading actions
> > From: ghotankarua50@gmail.com
> > To: user@struts.apache.org
> >
> > Well after doing some research on designing rest api ***best practices*** I
> > realized I was doing something wrong.
> >
> > For getting all companies, we must use
> >
> > http://localhost/company
> >
> > For getting all locations of that company we can use
> >
> > http://localhost/company/111/locations
> >
> > For anything else to get from any particular location we can use
> >
> > http://localhost/company/locations/111 - to get location details
> > ****(/company/ only in namespacing )
> >
> > http://localhost/company/locations/111/contacts - to get location contacts
> >
> > etc.............
> >
> >
> > Now question is how do we implement namespacing in struts2 rest api???
> >
> > As by default all actions are @root right?
> >
> > can we have @namespace(value="/company/") annotation in Location Action????
> >
> > But this does not work for me, it redirects to company action only and says
> > no method available.
> >
> > Or we must not use such namespacing and its better to use
> > http://localhost/location instead of http://localhost/company/location
> >
> > Please suggest.
>
> MG>you need to specify the namespace attribute in <package specification
> MG>http://www.mkyong.com/struts2/struts-2-namespace-configuration-example-and-explanation
> MG>there is a movement to add more "annotation based specifications" at ActionClass level in the new Struts 3.x
> MG>if you make a request in Struts JIRA and add a testcase then one of or more of us will follow thru if this feasible
> MG>https://issues.apache.org/jira/secure/Dashboard.jspa
>
> >
> > On Fri, Jan 23, 2015 at 4:20 PM, Amol Ghotankar <gh...@gmail.com>
> > wrote:
> >
> > > hi,
> > >
> > > I was trying out struts2 rest plugin and found it really cool.
> > >
> > > But was just wondering how will this work with action cascading ? i.e
> > >
> > > So When using http://localhost/company it goes to companyAction and
> > > executes respective mapped methods
> > >
> > > But how do we organize work when we
> > > http://localhost/company/1/locations/2/contact/2/ ???
> > >
> > > Will these be methods in same class? Class will grow too big & if not how
> > > does it get mapped to contactAction and pass values their?
> > >
> > > How about more complex case where we have
> > > http://localhost/company/1/locations/2/contact/2/order/2/transaction/1/payment
> > > or something like this???
> > >
> > > Domain objects are hibernate entities when company has locations has
> > > contacts has orders has transaction has payments?
> > >
> > > or should the rest url be something different and simplified? like
> > > http://localhost/order/2/transaction/1/payment but still has issues
> > > mapping things and reusing actions?
> > >
> > > Am I missing something in rest plugin?
> > >
> > > --
> > >
> > >
> > >
> > > *With Best Regards,*
> > >
> > > Amol Ghotankar
> > > Technical Lead
> > > M: +91 9960 980 419 <http://www.cursivetech.com>
> > >
> >
> >
> >
> > --
> >
> >
> >
> > *With Best Regards,*
> >
> > Amol Ghotankar
> > Technical Lead
> > M: +91 9960 980 419 <http://www.cursivetech.com>
>
RE: Using Struts2 Rest Plugin with deep cascading actions
Posted by Martin Gainty <mg...@hotmail.com>.
> Date: Sat, 24 Jan 2015 15:24:49 +0530
> Subject: Re: Using Struts2 Rest Plugin with deep cascading actions
> From: ghotankarua50@gmail.com
> To: user@struts.apache.org
>
> Well after doing some research on designing rest api ***best practices*** I
> realized I was doing something wrong.
>
> For getting all companies, we must use
>
> http://localhost/company
>
> For getting all locations of that company we can use
>
> http://localhost/company/111/locations
>
> For anything else to get from any particular location we can use
>
> http://localhost/company/locations/111 - to get location details
> ****(/company/ only in namespacing )
>
> http://localhost/company/locations/111/contacts - to get location contacts
>
> etc.............
>
>
> Now question is how do we implement namespacing in struts2 rest api???
>
> As by default all actions are @root right?
>
> can we have @namespace(value="/company/") annotation in Location Action????
>
> But this does not work for me, it redirects to company action only and says
> no method available.
>
> Or we must not use such namespacing and its better to use
> http://localhost/location instead of http://localhost/company/location
>
> Please suggest.
MG>you need to specify the namespace attribute in <package specification
MG>http://www.mkyong.com/struts2/struts-2-namespace-configuration-example-and-explanation
MG>there is a movement to add more "annotation based specifications" at ActionClass level in the new Struts 3.x
MG>if you make a request in Struts JIRA and add a testcase then one of or more of us will follow thru if this feasible
MG>https://issues.apache.org/jira/secure/Dashboard.jspa
>
> On Fri, Jan 23, 2015 at 4:20 PM, Amol Ghotankar <gh...@gmail.com>
> wrote:
>
> > hi,
> >
> > I was trying out struts2 rest plugin and found it really cool.
> >
> > But was just wondering how will this work with action cascading ? i.e
> >
> > So When using http://localhost/company it goes to companyAction and
> > executes respective mapped methods
> >
> > But how do we organize work when we
> > http://localhost/company/1/locations/2/contact/2/ ???
> >
> > Will these be methods in same class? Class will grow too big & if not how
> > does it get mapped to contactAction and pass values their?
> >
> > How about more complex case where we have
> > http://localhost/company/1/locations/2/contact/2/order/2/transaction/1/payment
> > or something like this???
> >
> > Domain objects are hibernate entities when company has locations has
> > contacts has orders has transaction has payments?
> >
> > or should the rest url be something different and simplified? like
> > http://localhost/order/2/transaction/1/payment but still has issues
> > mapping things and reusing actions?
> >
> > Am I missing something in rest plugin?
> >
> > --
> >
> >
> >
> > *With Best Regards,*
> >
> > Amol Ghotankar
> > Technical Lead
> > M: +91 9960 980 419 <http://www.cursivetech.com>
> >
>
>
>
> --
>
>
>
> *With Best Regards,*
>
> Amol Ghotankar
> Technical Lead
> M: +91 9960 980 419 <http://www.cursivetech.com>
Re: Using Struts2 Rest Plugin with deep cascading actions
Posted by Amol Ghotankar <gh...@gmail.com>.
Well after doing some research on designing rest api ***best practices*** I
realized I was doing something wrong.
For getting all companies, we must use
http://localhost/company
For getting all locations of that company we can use
http://localhost/company/111/locations
For anything else to get from any particular location we can use
http://localhost/company/locations/111 - to get location details
****(/company/ only in namespacing )
http://localhost/company/locations/111/contacts - to get location contacts
etc.............
Now question is how do we implement namespacing in struts2 rest api???
As by default all actions are @root right?
can we have @namespace(value="/company/") annotation in Location Action????
But this does not work for me, it redirects to company action only and says
no method available.
Or we must not use such namespacing and its better to use
http://localhost/location instead of http://localhost/company/location
Please suggest.
On Fri, Jan 23, 2015 at 4:20 PM, Amol Ghotankar <gh...@gmail.com>
wrote:
> hi,
>
> I was trying out struts2 rest plugin and found it really cool.
>
> But was just wondering how will this work with action cascading ? i.e
>
> So When using http://localhost/company it goes to companyAction and
> executes respective mapped methods
>
> But how do we organize work when we
> http://localhost/company/1/locations/2/contact/2/ ???
>
> Will these be methods in same class? Class will grow too big & if not how
> does it get mapped to contactAction and pass values their?
>
> How about more complex case where we have
> http://localhost/company/1/locations/2/contact/2/order/2/transaction/1/payment
> or something like this???
>
> Domain objects are hibernate entities when company has locations has
> contacts has orders has transaction has payments?
>
> or should the rest url be something different and simplified? like
> http://localhost/order/2/transaction/1/payment but still has issues
> mapping things and reusing actions?
>
> Am I missing something in rest plugin?
>
> --
>
>
>
> *With Best Regards,*
>
> Amol Ghotankar
> Technical Lead
> M: +91 9960 980 419 <http://www.cursivetech.com>
>
--
*With Best Regards,*
Amol Ghotankar
Technical Lead
M: +91 9960 980 419 <http://www.cursivetech.com>