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Using system variables with tables
  
 
Posted: May 24, 2012

I’m trying to program my bot to respond to questions about hours of operation. I have a table with dates and the hours of operation:

table: hours (^today ^hrs)

DATA:
"5 23 2012" "open from 8:00 am until 8:00 pm"
"5 24 2012" "open from 8:00 am until 8:00 pm"
"5 25 2012" "open from 8:00 am until 1:00 pm"
"5 26 2012" closed
"5 27 2012" closed
etc. etc. 

but am stuck on how to create the first argument. I tried:


table: hours (^datecheck ^hrs)
$datecheck = ^createfact(%month
 

 
Posted: May 24, 2012
   [ # 1 ]

As always, there are a variety of ways to do this. I’m not sure the year is really a relevant concern in your table, but fine.


GRRR—- I put in code here, it shows fine in preview, and disappears in my actual post.

The basics I wrote were: use periods instead of spaces in your first argument (fractionally simpler). Then use createfact(^1starg open ^2ndarg) as the table build.

Retrieve with $$tmp = join( month . date and year ) then
query(direct_sv $$tmp open ?)
 

 
Posted: May 24, 2012
   [ # 2 ]

You were trying to PARSE your date string into pieces to build a fact. But the string itself is a fine value.
OTHERWISE, you would not use a string. you would make table data like this:
5 12 2012 “closed”

Of course, you COULD parse the string by bursting it:
_0 = burst(^today ” “)
and then you should have pieces _0 _1 and _2.
but then you are back to creating multiple facts when a single fact per entry would do.
 

 
Posted: May 24, 2012
   [ # 3 ]

Thanks! That did it!
 

 
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