How do I determine what a Crystal Reports function does? - sql

Question

I have a custom crystal report which retrieves invoices from a database. There is a formula in the report that has the following code:
V6AttachmentsGetAttachment ({Command.AttachmentID},{?ReportAttachmentChannel} )
From my understanding, the formula has a function called 'V6AttachmentsGetAttachment' which takes two parameters (the first is a report field and the second is a report parameter).
This calculates a dynamic hyperlink.
How can I determine how exactly this is calculated? I am trying to figure out if I can replicate this calculation in SQL.
Is V6AttachmentsGetAttachment something that is stored in the SQL database? I can not find any references to it in Crystal Reports.

Answer 1

This is a custom function created by Viewpoint Construction Software (V6). It is used to connect with Construction Imaging, a document management system, to return images of things like invoices.
I believe the custom function is available if you have the Viewpoint client installed.

Answer 2

It could either be a custom function or one contained in a user-function library (UFL).
Custom Function
Edit a formula (any formula will do)
Assuming that it is a custom function, it will be listed below the Report Custom Functions node:
UFL
If this function is contained in a user-function library (UFL), you should see it listed in the Function tree:
u252000.dll contains a single function DateTimeto2000().
If this is the case, then you will need to locate the source code for the UFL.

Answer 3

CRUFLE and CRUFLV6 are viewpoint dlls. They are registered as global access controls using regasm. Crystal reports can then access the functionality within the dll.
https://support.viewpoint.com/s/knowledgedetail?c__urlname=Issue-109356-Error-when-running-crystal-reports-via-remote-access-not-VRL-UFL-u212com-dll-or-u2lcom-dll-that-implements-this-function-is-missing
CRUFLE and CRUFLV6
file version 22.2.0.716
I use crystal reports 2016, 32 bit
I downloaded the 32 bit crufle.dll and cruflv6
I copied the crufle.dll and cruflv6 to C:\Program Files (x86)\SAP BusinessObjects\SAP BusinessObjects Enterprise XI 4.0\win32_x86
%SystemRoot%\Microsoft.NET\Framework\v4.0.30319\regasm.exe crufle.dll
%SystemRoot%\Microsoft.NET\Framework\v4.0.30319\regasm.exe cruflv6.dll
regedit and search for the crufle and cruflv6 ensuring there were no other versions register. The u2lcom.dll error message was misleading because the dll is loaded from C:\Program Files (x86)\SAP BusinessObjects\SAP BusinessObjects Enterprise XI 4.0\win32_x86. you can see u2lcom.dll is loaded in the crystal report about-> more info which shows the loaded modules.
dumpbin will show that u2lcom.dll is loaded and availabe
dumpbin /EXPORTs u2lcom.dll
Section contains the following exports for U2LCOM.dll
00000000 characteristics
5A54B943 time date stamp Tue Jan 9 05:44:51 2018
0.00 version
1 ordinal base
15 number of functions
15 number of names
ordinal hint RVA name
3 0 00005670 InitPerThread
4 1 00005680 IsThreadSafe
5 2 000056A0 UFCallCOMFunction
6 3 000056C0 UFEndJob
7 4 000056F0 UFErrorRecovery
8 5 00005720 UFGetFunctionDefStrings
9 6 00005730 UFGetFunctionExamples
10 7 00005740 UFGetFunctionTemplates
11 8 00005750 UFGetVersion
12 9 00005760 UFInitialize
1 A 00005610 UFSetPreferredViewingLocale
2 B 00005630 UFSetProductLocale
13 C 000057E0 UFStartJob
14 D 00005810 UFTerminate
15 E 00005860 UninitPerThread
Summary
1000 .data
1000 .gfids
4000 .rdata
1000 .reloc
1000 .rsrc
8000 .text