74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
#ifndef PGSQL_RESULT_H
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#define PGSQL_RESULT_H
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#include "Pgsql_IResult.h"
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#include "Pgsql_Row.h"
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#include "Pgsql_ErrorDetails.h"
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namespace Pgsql {
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/** \brief Non-copyable but movable wrapper for a postgresql result.
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*
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* This class makes sure the result is removed from memory. It also supplies an iterator for the
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* rows from the result facilitating also the use of the cpp for each.
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*/
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class Result: public IResult {
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public:
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Result() = default;
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Result(PGresult *result);
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~Result();
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Result(const Result &rhs) = delete;
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Result& operator=(const Result &rhs) = delete;
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Result(Result &&rhs);
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Result& operator=(Result &&rhs);
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virtual operator bool() const override;
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ExecStatusType resultStatus();
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std::string getResStatus();
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/** Use this to retrieve an error code when this is an error result
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*
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* The possible code are listed in https://www.postgresql.org/docs/9.5/static/errcodes-appendix.html
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*/
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std::string diagSqlState();
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/** Retrieves all the error fields. */
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ErrorDetails diagDetails();
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int tuplesAffected() const override;
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int rows() const override;
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int cols() const override;
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const char* getColName(int idx) const override;
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const char* val(int col, int row) const override;
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Value get(int col, int row) const override;
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Oid type(int col) const override;
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bool null(int col, int row) const override;
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/// Return the oid of the table this is a column of
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/// when the column isn't a table column InvalidOid is returned
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/// when col is out of range a std::range_error is thrown
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Oid ftable(int col) const;
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/// Returns the attnum of col in its table, attnum is negative for system cols like oid
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/// It is positive for user columns, 0 signals there is no direct table column mapping
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/// when col is out of range a std::range_error is thrown
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int ftableCol(int col) const;
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// iterator begin();
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private:
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PGresult *result = nullptr;
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void colRangeCheck(int col) const;
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void rowRangeCheck(int row) const;
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};
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} // end namespace Pgsql
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#endif // PGSQL_RESULT_H
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