topic Re: Persistent Classes in Application Development and Automation Discussions

Persistent Classes

Former Member — Wed, 09 Apr 2014 16:25:07 GMT

Hi Experts,

I was in the process of defining mapping using Mapping Assistant Tool, I mapped the Class to the custom ABAP table. I was mapping attributes - I was not able to find Class Identifier in drop-down for the particular attribute- I found only Object reference in drop down. I'm not able to activate the Class because of this.

Any ideas?

Thanks in advance,

Venkat

Re: Persistent Classes

antonio_lopezs — Wed, 09 Apr 2014 16:52:31 GMT

Hi Venkat,

are you mapping the class to a Transparent Table, don´t you? Maybe are missing part of the table key...

Re: Persistent Classes

Former Member — Thu, 10 Apr 2014 06:05:56 GMT

Hi Antonio,

The key fields are already included..Is anything else required.

Thanks,

Venkat

Re: Persistent Classes

Former Member — Sun, 13 Apr 2014 13:13:50 GMT

HiExperts,

I'm actually not able to get the foreign key relationship between two Persistent classes derived from Transparent tables..If I give class reference it says field does not exist in table.if i give only object reference it says no class reference defined..pretty much got myself in knots..Help!

Thanks in advance!

Best,

Venkat

Re: Persistent Classes

Former Member — Sun, 13 Apr 2014 14:15:07 GMT

Hi Venkat,

Please go through the detailed documentation of implementation of persistent class and its mappings.

http://scn.sap.com/docs/DOC-41511

Hope it will be helpful

Regards,

Kannan

Re: Persistent Classes

Former Member — Sun, 13 Apr 2014 14:47:11 GMT

Hi Kannan,

Thanks! That was for local classes..i'm working on Global classes..

Any info on global persistent class foreign key relationship.

Thanks,

Venkat

Re: Persistent Classes

antonio_lopezs — Sun, 13 Apr 2014 21:05:02 GMT

Hi Venkat, I don´t know if I´m understanding correctly your problem, but I´m going to expose how I used the persisten classes in my last project.

I mapped the table to the persisten class. I chose 2 keys: Business key (like empno, or vbeln) and technical key (I used a guid field, just like CRM). To define a foreign key relation, just put the guid as attribute of the transparent table and It worked in the mapping of the other persistent class....

Original class:

MANDT			MANDT	CLNT	3	0	Mandante
EXP_GUID			ZGC_EXP_GUID	RAW	16	0	ZGC: Expediente - Id Interno

Related class:

It worked for me... 😕