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Discussion -Name Expression, Evaluate, Macro Substitution
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From
19/02/2007 11:03:26
 
 
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General information
Forum:
Visual FoxPro
Category:
Object Oriented Programming
Title:
Discussion -Name Expression, Evaluate, Macro Substitution
Environment versions
Visual FoxPro:
VFP 9
OS:
Windows XP SP2
Network:
Windows 2003 Server
Database:
MS SQL Server
Miscellaneous
Thread ID:
01197046
Message ID:
01197046
Views:
68
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)?
.·*´¨)
.·`TCH
(..·*

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