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How to change a Fact of a Fact?
  
 
Posted: Feb 10, 2013

Hi Bruce,
I am creating facts like so:

^createfact(^owner ^location (^base_type ^other_type ^amount)) 

and I want to change the ^amount value afterwards.

Ordinarily I would delete the fact of a fact and create a new one. But I can’t figure out how to query the (^base_type ^other_type ^amount) fact and have it return itself so I can delete it.


This is what I have so far:

outputmacro: ^change_inv_item(^owner ^location ^base_type ^other_type ^amount)
[
 @1 = ^query(direct_sv ^owner ^location)
 if (@1)
 {
  loop()
  {
   @2 = @1
   _1 = ^last(@1all)
   
   if (^fact( _3 subject) == ^base_type and ^fact( _3 verb) == ^other_type)
   {   
    ^delete(@2) # Deletes the entire fact set under ^owner ^location, which is not what I want  
   }
  }
 }
] 
 

 
Posted: Feb 11, 2013
   [ # 1 ]

I found the query.txt file and I am thinking one of the riccochet commands might do it.
 

 
Posted: Feb 11, 2013
   [ # 2 ]

I don’t think the riccochet command is right. What I need to be able to do is delete the fact in _3, But I need to convert it to a fact set some how. Is there a way to do that?

if (^fact( _3 subject) == ^base_type and ^fact( _3 verb) == ^other_type)
   {   
    ^delete(_3) # <------
   } 
 

 
Posted: Feb 15, 2013
   [ # 3 ]

Okay this is my next attempt. I tried to run a query on the list of facts contained in @0, using this funtion call:

#query(direct_svo subject verb object count fromset toset propogate match)

@7 = ^query(direct_sv eye component, ?, 1, @0) 

but it does not find anything.

@0 = ^query(direct_sv person component) 
 if (@0)
 {
  loop()
  {
   _1 = ^next(@0all)
   
   ^fact( _3 subject) ^fact( _3 verb) ^fact( _3 object), 
   
   if (^fact( _3 subject) == eye)
   {
    @7 = ^query(direct_sv eye component, ?, 1, @0) 
    if (@7)
    {
     {Found eye fact}
    }
    else
    {
     {Failed to find eye fact}
    }
   }
   
  }
 }
 else
 {
  call failed
 } 
 

 
Posted: Feb 16, 2013
   [ # 4 ]

I see I am over complicating things again, so forget this question.
 

 
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‹‹ Calling :reset command from script      riccochet_s<v_S query ››