AbstractString.h

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#ifndef _ABSTRACTSTRING_H
#define _ABSTRACTSTRING_H

#include "Feature.h"

typedef map<string, unsigned long> stringcode;

class AbstractStringFeature: public PersistantFeature
{
        public:
                typedef enum ComparatorType { None, Levenshtein };

        protected:
                AbstractStringFeature(ComparatorType comp, stringcode *code, long *maxlen);

                AbstractStringFeature(ComparatorType comp, stringcode *code, long *maxlen, const string &name);

        public:
                virtual ~AbstractStringFeature();

                virtual double getPosition() const;
                virtual double getDistance(Feature *f) const;
                virtual void moveTowards(Feature *f, double factor);

                virtual string serialize() const;
                virtual void unserialize(string value);

                virtual featureparams write() const;
                virtual void read(featureparams *param);

                virtual Feature* clone() const;
                virtual void aggregate(aggregatelist samples);

                virtual FeatureType getType() const { return nominal; }
                virtual const string getName() const {  return "AbstractStringFeature"; }

                const string& getVal() const { return name; }

                const unsigned long getCodeVal() const { return codeval; }

                const stringcode* getCode() { return code; }

#if _DEBUG_FEATURES

                virtual string toString() const;
#endif

        private:
                string name;

        protected:
                long *maxlength;
                stringcode *code;
                char *position;

                unsigned long codeval;

                unsigned long getCodeForName(const string &name);

        private:
                ComparatorType comparator;
};

class AbstractStringListFeature: public AbstractStringFeature
{
        private:
                stringvector names;

        protected:
                bit_vector listval;

                AbstractStringListFeature(stringcode *code, long *maxlen);

                AbstractStringListFeature(stringcode *code, long *maxlen, const stringvector *names);

                bit_vector getCodeForList(const stringvector *names);

        public:
                virtual string serialize() const;
                virtual void unserialize(string value);

                virtual double getPosition() const;
                virtual double getDistance(Feature *f) const;
                virtual void moveTowards(Feature *f, double factor);

                virtual Feature* clone() const;

                virtual const string getName() const { return "AbstractStringListFeature"; }

                const bit_vector& getListVal() const {
                        return listval;
                }

                const stringvector& getListValues() const {
                        return names;
                }

#if _DEBUG_FEATURES
                virtual string toString() const;
#endif
};

#endif // _ABSTRACTSTRING_H

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