Re: [Info-gnuprologjava] FW: problem in creating complex prolog queries , queries created by conjugating more that 5 simple queries .

[Daniel Thomas]

Sorry.

I think that the error message is misleading and due to a bug in the way
I used finally in my implementation of runOnce. Try using prepareGoal
and then execute (which is essentially what runOnce does) as then you
should hopefully get the correct error message when prepareGoal fails
which should help with working out what the actual problem is.

Daniel

On Thu, 2012-05-17 at 14:12 +0530, Suman Roy wrote:
>  
> 
> Hello , 
> 
>  
> 
>    I want to construct a complex prolog query with the help of  “ gnu
> prolog “  jar file  , which will be conjugation of 5 simple prolog
> queries .
> 
>  
> 
> For instance :   :-   p (a) ,  q(b), r(c), s(d ), l(e )  .
> 
>  
> 
>   But gnu prolog is showing an error message , “ The goal is not
> currently active  ”. Can you please let me what can be done to create
> such queries?
> 
>  
> 
>  
> 
> rules_01.pl file  :
> 
> --------
> 
> p (a).
> 
> q(b).
> 
> r(c).
> 
> s(d ).
> 
> l(e )  .
> 
>  
> 
> Code snippet : 
> 
> -----------------
> 
>  
> 
> Term t1[] =  {AtomTerm.get("a")};
> 
> Term t2[] =  {AtomTerm.get("b")};
> 
>   Term t3[] =  {AtomTerm.get("c")};
> 
>   Term t4[] =  {AtomTerm.get("d")};
> 
>   Term t5[] = {AtomTerm.get("e”)};
> 
>  
> 
> CompoundTerm ct1=new CompoundTerm("p",t1); 
> 
>  CompoundTerm ct2=new CompoundTerm("q",t2);
> 
> CompoundTerm ct3=new CompoundTerm("r",t3);
> 
> CompoundTerm ct4=new CompoundTerm("s",t4);
> 
> CompoundTerm ct5=new CompoundTerm("l",t5);
> 
>  
> 
> String functor = ",";
> 
> CompoundTerm mt1 = new CompoundTerm(functor, 2);
> 
> mt1.args[0]=ct1;
> 
> mt1.args[1]=ct2;
> 
> CompoundTerm mt2 = new CompoundTerm(functor, 2);
> 
>  
> 
> mt2.args[0]=mt1;
> 
> mt2.args[1]=ct3;
> 
>  
> 
> CompoundTerm mt3 = new CompoundTerm(functor, 2);
> 
> mt3.args[0]=mt2;
> 
> mt3.args[1]=ct4;
> 
>  
> 
> CompoundTerm mt4 = new CompoundTerm(functor, 2);
> 
> mt3.args[0]=mt3;
> 
> mt3.args[1]=ct5;
> 
>  
> 
>  
> 
>             int rc = in.runOnce(mt4);
> 
>  
> 
>  
> 
>  
> 
>  
> 
>  
> 
> =======================================
> 
>  
> 
> 
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