SetFilter.h

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#ifndef CARMA_DBMS_SETFILTER_H
#define CARMA_DBMS_SETFILTER_H

#include <string>
#include <sstream>
#include <set>
#include "carma/dbms/filter/OneComponentFilter.h"
#include "carma/util/IllegalArgumentException.h"
#include "carma/util/StringUtils.h"

namespace carma {
namespace dbms {

template <class T> class SetFilter : public OneComponentFilter {

public:

    SetFilter(const std::set<T>& values, const std::string& columnName) 
        : values_(values) {
        if(values.size() == 0) {
            std::string emsg = "Number of elements in values set must be ";
            emsg += "greater than 0";
            throw CARMA_EXCEPTION(carma::util::IllegalArgumentException, emsg);
        }
        columnName_ = columnName;
    }

    virtual ~SetFilter() {}

    std::set<T> getValues() const { return values_; }

    virtual std::string toString(const std::string& tableName, 
                                 const std::string& columnName) const {
        std::ostringstream ss;
        ss << fullyQualifiedColumnName_(tableName,columnName);
        ss << " IN (" << carma::util::setToString(values_) << ")";
        return ss.str();
    }

    virtual std::string name() const {
        return "SetFilter<>";
    }

protected:
    std::set<T> values_;
};

}}

#endif // CARMA_DBMS_SETFILTER_H