Using Morphia with POJO-mapping or CRUD gives Nullpointer

[blockmar]

When I try to use Morphia-based model objects with the Controller pojo-mapping I get a NullpointerException when navigating to the page. See below.

Oops: NullPointerException

An unexpected error occured caused by exception NullPointerException: null

play.exceptions.UnexpectedException: Unexpected Error
        at play.mvc.ActionInvoker.invoke(ActionInvoker.java:258)
        at Invocation.HTTP Request(Play!)
Caused by: java.lang.NullPointerException
        at play.modules.morphia.MorphiaPlugin.bind(MorphiaPlugin.java:577)
        at play.PlayPlugin.bind(PlayPlugin.java:68)
        at play.plugins.PluginCollection.bind(PluginCollection.java:534)
        at play.data.binding.Binder.bind(Binder.java:111)
        at play.mvc.ActionInvoker.getActionMethodArgs(ActionInvoker.java:642)
        at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:478)
        at play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:473)
        at play.mvc.ActionInvoker.invoke(ActionInvoker.java:161)
        ... 1 more

Model object:

package models;

import play.modules.morphia.Model;

public class Registerform extends Model {

    public String name;
    public String alias;
    public String password1;
    public String password2;

}

Controller method:

package controllers;

import models.forms.Registerform;
import play.mvc.Controller;

public class Register extends Controller {

    public static void index(Registerform form) {
        if(form != null){ System.out.println(form.name); }
        render();
    }   
}

[greenlaw110]

which play version are you using? There are known binding issue with Play
1.2.4.

On Tue, Jan 31, 2012 at 8:32 PM, Anders Blockmar <
[email protected]

wrote:

When I try to use Morphia-based model objects with the Controller
pojo-mapping I get a NullpointerException when navigating to the page. See
below.

Oops: NullPointerException

An unexpected error occured caused by exception NullPointerException: null

play.exceptions.UnexpectedException: Unexpected Error
       at play.mvc.ActionInvoker.invoke(ActionInvoker.java:258)
       at Invocation.HTTP Request(Play!)
Caused by: java.lang.NullPointerException
       at play.modules.morphia.MorphiaPlugin.bind(MorphiaPlugin.java:577)
       at play.PlayPlugin.bind(PlayPlugin.java:68)
       at play.plugins.PluginCollection.bind(PluginCollection.java:534)
       at play.data.binding.Binder.bind(Binder.java:111)
       at
play.mvc.ActionInvoker.getActionMethodArgs(ActionInvoker.java:642)
       at
play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:478)
       at
play.mvc.ActionInvoker.invokeControllerMethod(ActionInvoker.java:473)
       at play.mvc.ActionInvoker.invoke(ActionInvoker.java:161)
       ... 1 more

Model object:

package models;

import play.modules.morphia.Model;

public class Registerform extends Model {

       public String name;
       public String alias;
       public String password1;
       public String password2;

}

Controller method:

package controllers;

import models.forms.Registerform;
import play.mvc.Controller;

public class Register extends Controller {

   public static void index(Registerform form) {
       if(form != null){ System.out.println(form.name); }
       render();
   }
}

---

Reply to this email directly or view it on GitHub:
#64

[blockmar]

I am using Play 1.2.4. I did not make the connection between the issues until now. Probably the same reason.

[greenlaw110]

Can you try on Play 1.2.3 ?

On Wed, Feb 1, 2012 at 12:36 AM, Anders Blockmar <
[email protected]

wrote:

I am using Play 1.2.4. I did not make the connection between the issues
until now. Probably the same reason.

---

Reply to this email directly or view it on GitHub:
#64 (comment)

[blockmar]

I tried using 1.2.3 same problem.

This is what I did.

• Downloaded and unpacked play-1.2.3.
• Installed play-morphia plugin.
• Synced dependencies with my old project
• Re-Eclipsifyed my old project, references changed from 1.2.4 -> 1.2.3
• Started the project using play-1.2.3.
• Retested scenario.
• Got same result/problem.

[blockmar]

If you have any tips on how to run play using a custom version of the play-morphia plugin (say in Eclipse for example) I can try to help you with the issue. So far I have forked the repo but haven't figured out how to start play with "my" plugin code.

Do I need to build a plugin jar for each try or can I run it from within my dev env somehow?

[greenlaw110]

Hi can you try the latest 1.2.7 version?

[greenlaw110]

Can you send your project package to me? I need to understand how you invoke Register.index(...) method

[blockmar]

Hi!

Sorry about my mack of answers. I will try to test the tastest version
asap, if I can't test it myself I will send you the project.

redards

Anders

On Sun, Jun 10, 2012 at 6:39 AM, Green Luo <
[email protected]

wrote:

Can you send your project package to me? I need to understand how you
invoke Register.index(...) method

---

Reply to this email directly or view it on GitHub:
#64 (comment)

[greenlaw110]

hi any update here?

[blockmar]

Hi!

Just tested my old code with play 1.2.5 and the 1.2.10 plugin. Same problem.

I have retired my code (ande the project) in favour of Play 2 a few months ago so this bug is not a problem to me any longer. Please close it since I am unable to dig any further into this.