Simple Data Type in CAF of SAP NetWeaver DevStudio 7.1 SP3

Question

Hallo
Anybody knows about the use of Enumeration for simple Data Type in CAF of SAP NetWeaver DevStudio 7.1 SP3?
I've defined an attribute "status" for the Entity "Project" with the following values
0: NEW;
1: ACTIVE;
-1: INACTIVE. 
As you see the data type is short.
In the program I want to use the following code:
Project myProject = new Project();
myProject.setStatus(Status.NEW)
But I found it out, it is inpossible to to use Status.NEW.
On the other side I read the article of https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/085098ea-0c01-0010-12a8-80ac838bec85. This article is again not updated with the version 7.1 SP 3.
I cannot understand about the whole changes. In the previous release we can define a DDIC type and use it as Simple Data type and in the new Release we just use the XSD-Facet to define an enumeration, but the problem is: we can not reference it in the program. I don't see any advantage.  And I tried to find out how I can define the attibute using DDIC type. I didn't get it.
Thanks for any Hints!
Kind Regards!
Ping

Answer 1

Hi Oliver,
Thanks for the reply!
I have login into the system, using User Id and Password.
I have tried unsinstalling everything but the result remains the same.
Previously only one service SAPCE_01 was showing up in the services explorer. But when I tried the
Instance 00:
sc create SAPRKT_00 binPath= "C:\usr\sap\RKT\SYS\exe\uc\NTI386\sapstartsrv.exe pf=C:/usr/sap/RKT/SYS/profile/CE1_SCS00_xxxxx" start= auto obj= "NT AUTHORITY\LocalService" password= abcd1234
Instance 01:
another service SAPCE1_00 was created. But when I tried to retry the instlattio, the installation again stopped at the point while starting the service and when I tried to retry it terminted with the following error.
Please guide.
sapinst.exe - Application Error
The instruction at "0x00cbf040" referenced memory at "0x0072006d". The memory could not be "read".
Click on OK to terminate the program
Click on CANCEL to debug the program
Selfextractor error
iaextract.c:888: child has signaled an exec error. Keeping directory C:/DOCUME1/I047488/LOCALS1/Temp/sapinst_exe.1448.1196681060
OK  
Manish