set Filter to with set Relation to not work for "ADS&qu

[kokookao2007]

hi all:

"Set Filter to" with "Set Relation to" not work for RDD "ADS",
same source work fine for RDD "DBFCDX" .

*******************
LOCAL cSALSMAN:="TIM",cCOND

cCOND:="SAL->SALSMAN="+"'"+cSALSMAN+"'"

USE SAL INDEX SAL_NO NEW SHARE // INDEX ON SNO

USE SAL1 INDEX SAL1_DT NEW SHARE
SET RELATION TO SAL1->SNO INTO SAL

SET SCOPE TO dDT1,dDT2
SET FILTER TO &cCOND // ERROR FILTER FOR "ADS" , BUT WORK FINE FOR "DBFCDX"
GO TOP

BROWSE()
********************

Anyone Know how ?



Best Regards

kokoo

[R.F.]

Kokoo:

I think I explained it to you in comp.lang.xharbour newsgroup, but here it goes again anyway:

ADS is an EXTERNAL program to your application, so, you cannot use anything related to your program to indicate filters, relations or indexes.

I mean, you cannot use alias, variables or used defined functions in the ADS or RDD related functions or comands. in order to set relations or filters, because ADS CANNOT go into your program code or memory and "inspect" the values of such variables.

LOCAL cSALSMAN:="TIM",cCOND

cCOND:="SAL->SALSMAN="+"'"+cSALSMAN+"'"

The previos expression is not valid, if you are going to use it with ADS you cannot use the "SAL" alias, because ADS cannot know what is the value of "SAL" (this is an internal pointer of your application), so, the right expression is:

Code: Select all

LOCAL cSALSMAN:="TIM",cCOND                             
                                                        
cCOND:="SALSMAN="+"'"+cSALSMAN+"'"                 

This:

Code: Select all

USE SAL  INDEX SAL_NO NEW SHARE     // INDEX ON SNO     
                                                        
USE SAL1 INDEX SAL1_DT NEW SHARE                        
SET RELATION TO SAL1->SNO INTO SAL                      
SET SCOPE TO dDT1,dDT2                                  

This can be valid if you want the relation be handled by the client (it could be slow).

And the problem comes here:

Code: Select all

SET FILTER TO &cCOND   // ERROR FILTER FOR "ADS" , BUT WORK FINE FOR "DBFCDX" 
BROWSE()    
GO TOP                                                  

As I explained to you in the xharbour news group, all the filtering stuff MUST be established in a TEXTUAL FORM, since the cCOND expression is wrong form the begining, it will sure crash when comming to this point.

This is the right way:

Code: Select all

cCond := cCOND:="SALSMAN="+"'"+cSALSMAN+"'"                 
bCond := "{||"+cCond+"}"
DBSETFILTER(&bCond, cCond)
GO TOP
BROWSE()                                                

Remember, ADS is an EXTERNAL programm running out of the cast of your application. ADS doesn't know anything about your programm enviroment and it doesn't have anyway to know about it.

[kokookao2007]

hi Rene :

Thank you for help Again.

In this sample. there is no field "salsman" define in sal1.dbf .

Code: Select all

cCOND:="SAL->SALSMAN="+"'"+cSALSMAN+"'" 
edit to :
cCOND:="SALSMAN="+"'"+cSALSMAN+"'" 
// Can not work  , SAL1->SALSMAN==>no such field 

What I edit :
1)add field "salsman" to sal1.dbf
2)Replace Sal->Salsman to Sal1->Salsman for scope condition (by Set relation to)
3)now cCOND:="SALSMAN="+"'"+cSALSMAN+"'" or cCOND:="SAl1->SALSMAN="+"'"+cSALSMAN+"'" Can be work

Code: Select all

SOURCE CODE:

LOCAL cSALSMAN:="TIM",cCOND


USE SAL INDEX SAL_NO NEW SHARE // INDEX ON SNO
cCOND:="SAL->SALSMAN="+"'"+cSALSMAN+"'"

SET FILTER TO &cCOND

USE SAL1 INDEX SAL1_DT NEW SHARE

*ADD FIELD SALSMAN FIRST

SET RELATION TO SAL1->SNO INTO SAL
SET SCOPE TO dDT1,dDT2
GO TO
DO WHILE ! EOF()

   SAL1->(RLOCK())
   SAL1->SLASMAN:=SAL->SALSMAN
   SAL1->(DBUNLOCK())
   SKIP
ENDDO 
SET RELATION TO 

SAL->(DBCLOSEAREA())

SELE SAL1
cCOND:="SAL1->SALSMAN="+"'"+cSALSMAN+"'"
SET FILTER TO &cCOND
...
...

Any best solution not to edit struct sal1.dbf for both Rdd "dbfcdx" and "ADS" ?

Best Regards

kokoo