include/Predicate.h

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#ifndef PREDICATE_H
#define PREDICATE_H
#include<DataType.h>
class PredicateImpl;
class Predicate;
class Condition
{
    Predicate *pred;
    public:
    Condition();
    ~Condition();
    void reset();

    Predicate* getPredicate() { return pred; }

    void setPredicate(Predicate * predicate) {  pred = predicate; }


    void setTerm(const char* fName1, ComparisionOp op, const char *fName2);

    void setTerm(const char* fName1, ComparisionOp op, void *opnd);

    void setTerm(const char* fName1, ComparisionOp op, void **opnd);


    void setTerm(Predicate *p1, LogicalOp op, Predicate *p2 = NULL);

};

class Predicate
{
    public:
    virtual void setTerm(const char* fName1, ComparisionOp op, const char *fName2)=0;

    //Operand should be of the same type of the field. This is must
    virtual void setTerm(const char* fName1, ComparisionOp op, void *opnd)=0;

    //Operand should be of the same type of the field. This is must
    virtual void setTerm(const char* fName1, ComparisionOp op, void **opnd)=0;

    virtual void setTerm(Predicate *p1, LogicalOp op, Predicate *p2 = NULL)=0;

    virtual void print()=0;
    virtual ~Predicate(){}
};


#endif

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