#define COND_LT         0x00
#define COND_LE         0x01
#define COND_EQ         0x02
#define COND_GE         0x03
#define COND_GT         0x04
#define COND_NE         0x05
#define COND_BEGINS     0x06

class Condition {
        int tupleindex;
        int cond;
        const void *value;
};

class ConditionSet {
public:
        ConditionSet();
        virtual ~ConditionSet();
        
        int count() const
          { return conditions; }
        const Condition& operator[](int i) const
          { return cond[i]; }
        Condition& operator[](int i)
          { return cond[i]; }
        Condition& operator[](int i) const
          { return cond[i]; }
        
        void operator +=(const Condition &c);
private:
        ConditionSet(const ConditionSet&);            //don't copy
        ConditionSet& operator=(const ConditionSet&); //don't copy

        Condition *cond;
        int conditions;
};

void operator +=(const Condition &c) {
        Condition *new_cond = new Condition[conditions+1];
        int i;
        while(i<conditions && cond[i].tupleindex<c.tupleindex) {
                new_cond[i] = cond[i];
                i++;
        }
        new_cond[i] = c;
        while(i<conditions) {
                new_cond[i+1] = cond[i];
                i++;
        }        
        conditions++;
        
        delete[] cond;
        cond = new_cond;
}