PreparedStatement.h

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#ifndef LINTEL_POSTGRESQL_PREPAREDSTATEMENT_H
#define LINTEL_POSTGRESQL_PREPAREDSTATEMENT_H
 
#include <string_view>
 
#include "Connection.h"
 
namespace lintel {
namespace postgresql {
  class PreparedStatement
  {
  private:
    bool m_closed = false;
    const Connection &m_connection;
    const int32_t m_nParams;
    const std::string m_statementName;
    const std::string m_statement;
 
  public:
    static constexpr int32_t initNParams(std::string_view tempStatement)
    {
      int32_t count = 0;
      for (const char c : tempStatement) {
        if (c == '?') { ++count; }
      }
      return count;
    }
 
    static std::string initStatement(const std::string &tempStatement);
 
    struct Definition
    {
      std::string name;
      std::string statement;
    };
 
    PreparedStatement(const Connection &connection, const Definition &definition);
 
    ~PreparedStatement() noexcept;
 
    std::shared_ptr<Result> execute(const std::vector<std::string> &params);
 
    void close();
  };
}// namespace postgresql
}// namespace lintel
#endif// LINTEL_POSTGRESQL_PREPAREDSTATEMENT_H