topic Re: Dump: Access via 'NULL' object reference not possible in Application Development and Automation Discussions

Dump: Access via 'NULL' object reference not possible

Former Member — Thu, 01 Mar 2007 12:36:44 GMT

Hi,

I am getting the following dump: Access via 'NULL' object reference not possible..

I am not an expert in BADI implementation, and it is my first time using that.

Can you please see if i am doing something wrong in this code:

BADI: CRM_MKTPL

method IF_EX_CRM_MKTPL~SET_ATTRIBUTES.

data: cm_stsma type J_STSMA.

data : cm_guid type CGPL_GUID16.

DATA: object TYPE REF TO CL_CGPL_STATUS_MANAGEMENT .

break-point.

call method im_project->get_guid

importing

EX_GUID = cm_guid.

cm_stsma = 'ZCRMCAMP'.

call method object->STATUS_PROFILE_CHANGE

exporting

im_guid = cm_guid

im_stsma = cm_stsma.

endmethod.

Re: Dump: Access via 'NULL' object reference not possible

amit_khare — Thu, 01 Mar 2007 12:38:39 GMT

The dump is not due to BADI it is for Object Oriented Programming.

you are calling a class with empty value.Check it.

Regards,

Amit

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Thu, 01 Mar 2007 12:39:57 GMT

Hello,

Put a CREATE OBJECT Object before trying to call the first method of 'Object'.

Regards,

john.

Re: Dump: Access via 'NULL' object reference not possible

alex_m — Thu, 01 Mar 2007 12:41:56 GMT

Hi,

The arror in your prog.

call method im_project->get_guid

U have create a object im_project with refrence to existing one.

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Thu, 01 Mar 2007 12:42:00 GMT

Hi,

The object name is wrong im_project) It is just Object.

BADI: CRM_MKTPL

method IF_EX_CRM_MKTPL~SET_ATTRIBUTES.

data: cm_stsma type J_STSMA.

data : cm_guid type CGPL_GUID16.

DATA: object TYPE REF TO CL_CGPL_STATUS_MANAGEMENT .

break-point.

call method <b>Object</b>->get_guid

importing

EX_GUID = cm_guid.

cm_stsma = 'ZCRMCAMP'.

call method object->STATUS_PROFILE_CHANGE

exporting

im_guid = cm_guid

im_stsma = cm_stsma.

endmethod.

Check now.

Regards,

Anji

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Thu, 01 Mar 2007 12:42:04 GMT

hi,

you have declared the object in statement, but not created the instance of it.

DATA: ob TYPE REF TO CL_CGPL_STATUS_MANAGEMENT .

use the "create object ob" to create the object instance without which it is giving 'NULL' object reference not possible.

Hope this helps.

Regards,

Richa

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Thu, 01 Mar 2007 12:42:27 GMT

Ok, thanks.

But i am putting:

DATA: ob TYPE REF TO CL_CGPL_STATUS_MANAGEMENT .

create object ob.

And i can't activate because:

"You cannot create an instance of the class CL_CGPL_STATUS_MANAGEMENT outside the class...

Please help...

Message was edited by:

yukimai maio

Message was edited by:

yukimai maio

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Thu, 01 Mar 2007 13:34:33 GMT

not answered yet

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Thu, 01 Mar 2007 13:38:30 GMT

Hi,

The error means the class is a singleton and can only be instantiated from within the class. Look for a method in the class to a reference (e.g. GET_REFERENCE).

Regards,

John.

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Thu, 01 Mar 2007 13:38:53 GMT

Hi,

You have not created object in the program, so, it is giving short dump.

Create Object... is missing

if object is bound.                                                   " checking reference exists
call method object->STATUS_PROFILE_CHANGE
exporting
im_guid = cm_guid
im_stsma = cm_stsma.
endif.

Regards

Bhupal Reddy

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Thu, 01 Mar 2007 13:55:53 GMT

In class: CL_CGPL_STATUS_MANAGEMENT i don't have any GET_REFERENCE....

Is there any way to do that?

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Thu, 01 Mar 2007 13:58:33 GMT

Hi Yukimai,

I Haven't any CRM system available to take a look. You should look for a method which returns a reference to the class itself.

Regards,

John.

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Thu, 01 Mar 2007 16:00:32 GMT

hi,

call the method STATUS_OBJECT_CREATE. this method is to create the instance.

data: i_CGPL_GUID16 type CGPL_GUID16.

data : i_CRM_J_OBTYP type CRM_J_OBTYP.

DATA: ob TYPE REF TO CL_CGPL_STATUS_MANAGEMENT .

call method ob->STATUS_OBJECT_CREATE

exporting IM_GUID = i_CGPL_GUID16

IM_STATUS_OBJECT = i_CRM_J_OBTYP.

Hope this helps.

Regards,

Richa

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Fri, 02 Mar 2007 11:15:13 GMT

Now i have this:

method IF_EX_CRM_MKTPL~SET_ATTRIBUTES.

data: cm_stsma type J_STSMA.

data : cm_guid type CGPL_GUID16.

DATA: ob TYPE REF TO CL_CGPL_STATUS_MANAGEMENT .

data: i_CGPL_GUID16 type CGPL_GUID16.

data : i_CRM_J_OBTYP type CRM_J_OBTYP.

call method ob->STATUS_OBJECT_CREATE

exporting IM_GUID = i_CGPL_GUID16

IM_STATUS_OBJECT = i_CRM_J_OBTYP.

call method im_project->get_guid

importing

EX_GUID = cm_guid.

cm_stsma = 'ZCRMCAMP'.

call method ob->STATUS_PROFILE_CHANGE

exporting

im_guid = cm_guid

im_stsma = cm_stsma.

When i try to put CREATE OBJECT ob, and when i try to activate always i get the same: "you cannot create an instance of the class CL_CGPL_STATUS_MANAGEMENT outside the class.

Thanks

endmethod.

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Fri, 02 Mar 2007 12:51:41 GMT

hi Yukimai,

if you class builder(se24) and check the properties of class CL_CGPL_STATUS_MANAGEMENT, you will find the instantiation is given as private. All the classes that have instantiation as private cannot be created via create object statment, so you are getting the message ' "you cannot create an instance of the class CL_CGPL_STATUS_MANAGEMENT outside the class.

These class have a method that is used to create a class. In this case it is STATUS_OBJECT_CREATE. You have to use this method only to create any instance of the class.

Hope this explaination helps.

Regards,

Richa.

Re: Dump: Access via 'NULL' object reference not possible

Former Member — Mon, 05 Mar 2007 14:56:44 GMT

Hi,

In my example how i can call the method call method STATUS_OBJECT_CREATE, because calling like this:

call method ob->STATUS_OBJECT_CREATE

exporting IM_GUID = i_CGPL_GUID16

IM_STATUS_OBJECT = i_CRM_J_OBTYP.

I get the same dump error.

Thanks in advance.

method IF_EX_CRM_MKTPL~SET_ATTRIBUTES.

data: cm_stsma type J_STSMA.

data : cm_guid type CGPL_GUID16.

data: i_CGPL_GUID16 type CGPL_GUID16.

data : i_CRM_J_OBTYP type CRM_J_OBTYP.

DATA: ob TYPE REF TO CL_CGPL_STATUS_MANAGEMENT .

call method ob->STATUS_OBJECT_CREATE

exporting IM_GUID = i_CGPL_GUID16

IM_STATUS_OBJECT = i_CRM_J_OBTYP.

call method im_project->get_guid

importing

EX_GUID = cm_guid.

cm_stsma = 'ZCRMCAMP'.

call method ob->STATUS_PROFILE_CHANGE

exporting

im_guid = cm_guid

im_stsma = cm_stsma.

endmethod.