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src/Pgsql_Params.h

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+#ifndef PGSQL_PARAMS_H
+#define PGSQL_PARAMS_H
+
+#include <vector>
+#include <QString>
+#include <pgsql/libpq-fe.h>
+#include "Pgsql_declare.h"
+
+namespace Pgsql {
+
+	class Params {
+	public:
+		Params();
+		Params(const Params& rhs);
+		Params& operator=(const Params& rhs);
+		Params(const Params&& rhs);
+		~Params();
+
+
+		/** \brief Add a parameter to the list.
+		 *
+		 * The class takes ownership of data and will try to delete[] it.
+		 */
+		void addText(const char *data, Oid oid=oid_varchar);
+		void add(const QString &s, Oid oid=oid_varchar);
+		void addBinary(const char *data, int length, Oid oid);
+		void clear();
+
+	private:
+		using t_paramValues = std::vector<const char *>;
+
+		void deleteValues()
+		{
+			for (auto e : m_paramValues)
+				delete[] e;
+		}
+
+		/* Assumes other lists already have been copied */
+		void copyValues(const t_paramValues &r);
+
+		std::vector<Oid> m_paramTypes;
+		t_paramValues m_paramValues;
+		std::vector<int> m_paramLengths; ///< postgresql ignores lengths for text parameters but we will it anyway for efficient copying
+		std::vector<int> m_paramFormats;
+	};
+
+} // end namespace Pgsql
+
+#endif // PGSQL_PARAMS_H