Added list of databases and roles.
Roles works for atleast 9.3 and up. Reorganizing code for communicating with database.
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eelke
parent
8c077b3d5f
commit
2d962334da
28 changed files with 881 additions and 428 deletions
203
src/PgsqlConn.h
203
src/PgsqlConn.h
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@ -12,6 +12,8 @@
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#include <fmt/format.h>
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#include "Pgsql_Result.h"
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namespace Pgsql {
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class Connection;
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@ -36,213 +38,12 @@ namespace Pgsql {
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// };
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class ErrorDetails {
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public:
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static ErrorDetails createErrorDetailsFromPGresult(const PGresult *res);
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std::string errorMessage;
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std::string state; ///< PG_DIAG_SQLSTATE Error code as listed in https://www.postgresql.org/docs/9.5/static/errcodes-appendix.html
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std::string severity;
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std::string messagePrimary;
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std::string messageDetail;
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std::string messageHint;
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int statementPosition; ///< First character is one, measured in characters not bytes!
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int internalPosition;
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std::string internalQuery;
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std::string context;
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std::string schemaName;
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std::string tableName;
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std::string columnName;
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std::string datatypeName;
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std::string constraintName;
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std::string sourceFile;
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std::string sourceLine;
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std::string sourceFunction;
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};
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/** \brief Class that is returned as value of a cell to facilitate auto conversion.
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*/
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class Value {
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public:
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Value(const char *val, Oid typ)
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: m_val(val), m_typ(typ)
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{}
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QString asQString() const
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{
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return QString::fromUtf8(m_val);
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}
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operator QString() const
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{
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return QString::fromUtf8(m_val);
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}
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operator std::string() const
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{
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return m_val;
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}
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operator short() const
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{
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return (short)std::atoi(m_val);
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}
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operator int() const
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{
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return std::atoi(m_val);
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}
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operator Oid() const
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{
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return operator int();
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}
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operator __int64() const
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{
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return strtoull(m_val, nullptr, 10);
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}
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operator bool() const
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{
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return strcmp(m_val, "t") == 0;
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}
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private:
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const char *m_val;
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Oid m_typ;
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};
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class Result;
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/** \brief A reference to a specific row from a result.
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*
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* As it is a reference its contents won't be valid after its associated result has
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* been destroyed.
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*/
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class Row {
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public:
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Row(const Result &result, int row)
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: m_result(result)
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, m_row(row)
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{}
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bool next();
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bool operator==(const Row& rhs)
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{
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return &m_result == &rhs.m_result
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&& m_row == rhs.m_row;
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}
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Value get(int col) const;
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//Value get(const char *colname) const;
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//bool get(int col, QString &s);
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private:
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const Result& m_result;
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int m_row;
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};
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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 {
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public:
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class const_iterator {
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public:
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const_iterator(const Result &r, int rw)
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: m_row(r, rw)
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{}
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const_iterator operator++()
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{
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const_iterator t(*this);
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m_row.next();
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return t;
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}
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const_iterator& operator++(int)
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{
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m_row.next();
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return *this;
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}
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bool operator==(const const_iterator &rhs)
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{
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return m_row == rhs.m_row;
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}
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bool operator!=(const const_iterator &rhs)
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{
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return !operator==(rhs);
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}
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const Row& operator*()
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{
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return m_row;
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}
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const Row& operator->()
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{
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return m_row;
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}
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private:
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Row m_row;
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};
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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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operator bool() const;
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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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const_iterator begin() const
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{
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return const_iterator(*this, 0);
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}
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const_iterator end() const
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{
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return const_iterator(*this, getRows());
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}
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int tuplesAffected() const;
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int getRows() const;
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int getCols() const;
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const char* const getColName(int idx) const;
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const char * getVal(int col, int row) const;
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Value get(int col, int row) const;
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Oid type(int col) const;
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bool null(int col, int row) const;
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// iterator begin();
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private:
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PGresult *result = nullptr;
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};
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/** \brief Wrapper for a cancel object from libpq.
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