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Discussion -Name Expression, Evaluate, Macro Substitutio
Message
De
19/02/2007 11:45:56
 
 
À
19/02/2007 11:31:41
Cetin Basoz
Engineerica Inc.
Izmir, Turquie
Information générale
Forum:
Visual FoxPro
Catégorie:
Programmation Orientée Object
Versions des environnements
Visual FoxPro:
VFP 9
OS:
Windows XP SP2
Network:
Windows 2003 Server
Database:
MS SQL Server
Divers
Thread ID:
01197046
Message ID:
01197063
Vues:
12
Hi Cetin,

There will be 1-10 objects (1 object created from each record). The name of the object will be determined by the values in 2 of the table's fields:

1st Record Example:
mytable.field1 = 'DATA'
mytable.field2 = 'QCC'

The created object's name will be oDATA_QCC for the first record.

The servername property of oDATA_QCC will be 'myservername' e.g. :

IF mytable.field3 = 'myservername':

oDATA_QCC.servername = TRIM(mytable.field3)

So the object can be referenced later based on the two fields in the table (in order to know which object to use)


>>Maybe I am just slow this Monday morning. If I want to create an object reference on the fly and set the values of its properties (Object will be public not local):
>>
>>For example:
>>
>>* Table with values to use for object's properties
>>* Mytable.cname && cName will become part of object's name
>>* Mytable.ctype && cType will become part of object's name
>>* Mytable.cserver && cServer will be the object's pServerName value
>>* Scan through the table 'mytable' and create an object from each record
>>
>>
>>lcConn = "'o'+mytable.cname+'_'+mytable.ctype       && e.g. lcConn now equals 'oDSN_Data'
>>PUBLIC &lcConn
>>&lcConn = CREATEOBJECT('ConnClass.ConnObj')         && Create an object named (lcConn)
>>lcConnServer = lcConn + '.pServerName'              && Set the connection object servername prop
>>&lcConnServer = TRIM(mytable.cserver)               && Slowest oDSN_Data.pServerName now = mytable.cserver value
>>
>>or
>>
>>&lcConnServer..pServerName = TRIM(mytable.cserver)  && oDSN_Data.pServerName now = mytable.cserver value
>>
>>or
>>
>>loControl = EVAL(lcConn)                            && Should be 2nd fastest to process
>>loControl.pServerName = TRIM(mytable.cserver)       && oDSN_Data.pServerName now = mytable.cserver value
>>
>>or
>>
>>STORE TRIM(mytable.cserver) TO (lcConn+'.pcServer') && Should be fastest
>>
>>
>>
>>Or is there a better way?
Which will be fastest if I have to create 10 similar objects with 10 properties each sequentially? Which will be easiest to maintain (by other developers)?
>
>Tracy,
>I'm not sure I follow it right, anyway:
>
>
>select cServer as pServername from myTable into cursor myServers nofilter
>oApp.AddProperty( "loConn["+ltrim(str(reccount()))+"]" )
>scan
> oApp.loConn[ recno() ] = CREATEOBJECT('ConnClass.ConnObj') && Create an object
> oApp.loConn[ recno() ].pservername = trim(pServername)
>endscan
>
Cetin
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