Interface LogicProgram<C extends Formula,​P extends Formula,​T extends Rule<?,​?>>

  • Type Parameters:
    C - The type of the formulas used for conclusions
    P - The type of the formulas used for the premise
    T - The type of the rules used in the program
    All Superinterfaces:
    BeliefBase
    All Known Implementing Classes:
    NLPProgram, Program

    public interface LogicProgram<C extends Formula,​P extends Formula,​T extends Rule<?,​?>>
    extends BeliefBase
    An interface for a logic program, which is a set of rules.
    Author:
    Tim Janus, Matthias Thimm
    • Method Summary

      Modifier and Type Method Description
      void addFact​(C fact)
      Adds the given fact to the program
      LogicProgram<?,​?,​?> exchange​(Term<?> v, Term<?> t)
      Substitutes all occurrences of term "v" in this formula by term "t" and at the same time replaces all occurrences of term "t" by term "v" and eventually returns the new formula.
      Signature getMinimalSignature()
      Returns the signature of the language of this knowledge base.
      LogicProgram<?,​?,​?> substitute​(java.util.Map<? extends Term<?>,​? extends Term<?>> map)
      Substitutes all occurrences of all terms "v" in map.keyset() in this formula by map.get(v) and returns the new formula.
      LogicProgram<?,​?,​?> substitute​(Term<?> v, Term<?> t)
      Substitutes all occurrences of term "v" in this formula by term "t" and returns the new formula.
      java.lang.String toString()  
    • Method Detail

      • addFact

        void addFact​(C fact)
        Adds the given fact to the program
        Parameters:
        fact - a fact
      • getMinimalSignature

        Signature getMinimalSignature()
        Description copied from interface: BeliefBase
        Returns the signature of the language of this knowledge base.
        Specified by:
        getMinimalSignature in interface BeliefBase
        Returns:
        the signature of the language of this knowledge base.
      • substitute

        LogicProgram<?,​?,​?> substitute​(Term<?> v,
                                                   Term<?> t)
                                            throws java.lang.IllegalArgumentException
        Substitutes all occurrences of term "v" in this formula by term "t" and returns the new formula.
        Parameters:
        v - the term to be substituted.
        t - the term to substitute.
        Returns:
        a formula where every occurrence of "v" is replaced by "t".
        Throws:
        java.lang.IllegalArgumentException - if "v" and "t" are of different sorts
      • substitute

        LogicProgram<?,​?,​?> substitute​(java.util.Map<? extends Term<?>,​? extends Term<?>> map)
                                            throws java.lang.IllegalArgumentException
        Substitutes all occurrences of all terms "v" in map.keyset() in this formula by map.get(v) and returns the new formula.
        Parameters:
        map - a mapping defining which terms to be substituted.
        Returns:
        a formula where every term in map.keyset() has been replaced by map.get(v).
        Throws:
        java.lang.IllegalArgumentException - if any term and its mapping are of different sorts
      • exchange

        LogicProgram<?,​?,​?> exchange​(Term<?> v,
                                                 Term<?> t)
                                          throws java.lang.IllegalArgumentException
        Substitutes all occurrences of term "v" in this formula by term "t" and at the same time replaces all occurrences of term "t" by term "v" and eventually returns the new formula.
        Parameters:
        v - a term.
        t - a term.
        Returns:
        a new logical formula with both "v" and "t" exchanged.
        Throws:
        java.lang.IllegalArgumentException - if "v" and "t" are of different sorts
      • toString

        java.lang.String toString()
        Specified by:
        toString in interface BeliefBase
        Overrides:
        toString in class java.lang.Object