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13#ifndef PQXX_H_ISOLATION \n-
14#define PQXX_H_ISOLATION \n-
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16#include "pqxx/compiler-public.hxx" \n-
17#include "pqxx/compiler-internal-pre.hxx" \n-
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19#include "pqxx/util.hxx" \n-
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68 static constexpr const char *
name() noexcept;
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14#ifndef PQXX_H_TRANSACTION_BASE \n+
15#define PQXX_H_TRANSACTION_BASE \n+
\n+
17#include "pqxx/compiler-public.hxx" \n+
18#include "pqxx/compiler-internal-pre.hxx" \n+
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29#include "pqxx/connection_base.hxx" \n+
30#include "pqxx/internal/encoding_group.hxx" \n+
31#include "pqxx/isolation.hxx" \n+
32#include "pqxx/result.hxx" \n+
33#include "pqxx/row.hxx" \n+
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59 void unregister_me() noexcept;
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60 void reg_pending_error(const
std::
string &) noexcept;
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61 bool registered() const noexcept {
return m_registered; }
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\n
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74 {
return "READ COMMITTED"; }
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78 {
return "REPEATABLE READ"; }
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82 {
return "SERIALIZABLE"; }
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86#include "pqxx/compiler-internal-post.hxx" \n-
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81 { add_binary_param(v,
true);
return *
this; }
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83 { add_param(v,
true);
return *
this; }
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85 { add_binary_param(v, nonnull);
return *
this; }
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88 { add_param(v, nonnull);
return *
this; }
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98 const std::string m_query;
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107class transaction_subtransaction;
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108class transaction_tablereader;
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109class transaction_sql_cursor;
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110class transaction_stream_from;
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111class transaction_tablewriter;
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112class transaction_stream_to;
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113class transaction_transactionfocus;
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175 std::string
esc(
const char str[])
const {
return conn().esc(str); }
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177 std::string
esc(
const char str[],
size_t maxlen)
const \n+
178 {
return conn().esc(str, maxlen); }
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180 std::string
esc(
const std::string &str)
const {
return conn().esc(str); }
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194 std::string
esc_raw(
const unsigned char data[],
size_t len)
const \n+
195 {
return conn().esc_raw(data, len); }
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197 std::string esc_raw(
const std::string &)
const;
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204 {
return conn().unesc_raw(text); }
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211 {
return conn().unesc_raw(text); }
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215 template<
typename T> std::string
quote(
const T &t)
const \n+
216 {
return conn().quote(t); }
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219 std::string
quote_raw(
const unsigned char str[],
size_t len)
const \n+
220 {
return conn().quote_raw(str, len); }
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222 std::string quote_raw(
const std::string &str)
const;
\n+
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226 {
return conn().quote_name(identifier); }
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229 std::string
esc_like(
const std::string &str,
char escape_char=
'\\\\')
const \n+
230 {
return conn().esc_like(str, escape_char); }
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250 const std::string &Query,
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251 const std::string &Desc=std::string{});
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254 const std::stringstream &Query,
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255 const std::string &Desc=std::string{})
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256 {
return exec(Query.str(), Desc); }
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265 const std::string &Query,
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266 const std::string &Desc=std::string{})
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267 {
return exec_n(0, Query, Desc); }
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276 row exec1(
const std::string &Query,
const std::string &Desc=std::string{})
\n+
277 {
return exec_n(1, Query, Desc).
front(); }
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287 const std::string &Query,
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288 const std::string &Desc=std::string{});
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320 template<
typename ...Args>
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323 return internal_exec_params(
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324 query, internal::params(std::forward<Args>(args)...));
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330 template<
typename ...Args>
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333 return exec_params_n(1, query, std::forward<Args>(args)...).
front();
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339 template<
typename ...Args>
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342 return exec_params_n(0, query, std::forward<Args>(args)...);
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348 template<
typename ...Args>
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351 const auto r = exec_params(query, std::forward<Args>(args)...);
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352 check_rowcount_params(rows, r.size());
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366 parameterized(
const std::string &query);
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395 template<
typename ...Args>
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398 return internal_exec_prepared(
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399 statement, internal::params(std::forward<Args>(args)...));
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405 template<
typename ...Args>
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408 return exec_prepared_n(1, statement, std::forward<Args>(args)...).
front();
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414 template<
typename ...Args>
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417 return exec_prepared_n(0, statement, std::forward<Args>(args)...);
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424 template<
typename ...Args>
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427 const std::string &statement,
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430 const auto r = exec_prepared(statement, std::forward<Args>(args)...);
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431 check_rowcount_prepared(statement, rows, r.size());
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475 prepared(
const std::string &statement=std::string{});
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485 { m_conn.process_notice(Msg); }
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488 { m_conn.process_notice(Msg); }
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502 void set_variable(
const std::string &Var,
const std::string &Val);
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514 std::string get_variable(
const std::string &);
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535 virtual
void do_begin() =0;
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537 virtual
result do_exec(const
char Query[]) =0;
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539 virtual
void do_commit() =0;
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541 virtual
void do_abort() =0;
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554 result direct_exec(const
char C[],
int Retries=0);
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557 void reactivation_avoidance_clear() noexcept
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558 {m_reactivation_avoidance.
clear();}
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596 PQXX_PRIVATE
void activate();
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598 PQXX_PRIVATE
void CheckPendingError();
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600 template<
typename T>
bool parm_is_null(T *p)
const noexcept \n+
601 {
return p ==
nullptr; }
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602 template<
typename T>
bool parm_is_null(T)
const noexcept \n+
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605 result internal_exec_prepared(
\n+
606 const std::string &statement,
\n+
607 const internal::params &args);
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609 result internal_exec_params(
\n+
610 const std::string &query,
\n+
611 const internal::params &args);
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614 void check_rowcount_prepared(
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615 const std::string &statement,
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616 size_t expected_rows,
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620 void check_rowcount_params(
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621 size_t expected_rows,
size_t actual_rows);
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623 friend class pqxx::internal::gate::transaction_transactionfocus;
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626 PQXX_PRIVATE
void register_pending_error(
const std::string &)
noexcept;
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628 friend class pqxx::internal::gate::transaction_tablereader;
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629 friend class pqxx::internal::gate::transaction_stream_from;
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630 PQXX_PRIVATE
void BeginCopyRead(
const std::string &,
const std::string &);
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631 bool read_copy_line(std::string &);
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633 friend class pqxx::internal::gate::transaction_tablewriter;
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634 friend class pqxx::internal::gate::transaction_stream_to;
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635 PQXX_PRIVATE
void BeginCopyWrite(
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636 const std::string &Table,
\n+
637 const std::string &Columns);
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638 void write_copy_line(
const std::string &);
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639 void end_copy_write();
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641 friend class pqxx::internal::gate::transaction_subtransaction;
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646 Status m_status = st_nascent;
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647 bool m_registered =
false;
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648 std::map<std::string, std::string> m_vars;
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649 std::string m_pending_error;
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654#include "pqxx/compiler-internal-post.hxx" \n+
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std::string esc(const char str[]) const
Escape string for use as SQL string literal in this transaction.
Definition: transaction_base.hxx:175
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\n
The home of all libpqxx classes, functions, templates, etc.
Definition: array.hxx:26
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isolation_level
Transaction isolation levels.
Definition: isolation.hxx:57
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@ serializable
Definition: isolation.hxx:61
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@ read_committed
Definition: isolation.hxx:59
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@ repeatable_read
Definition: isolation.hxx:60
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Binary data corresponding to PostgreSQL's "BYTEA" binary-string type.
Definition: binarystring.hxx:54
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Definition: connection_base.hxx:49
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connection_base abstract base class; represents a connection to a database.
Definition: connection_base.hxx:140
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Traits class to describe an isolation level; primarly for libpqxx's own use.
Definition: isolation.hxx:66
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static constexpr const char * name() noexcept
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static constexpr isolation_level level() noexcept
Definition: isolation.hxx:67
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Helper class for passing parameters to, and executing, prepared statements.
Definition: prepared_statement.hxx:82
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Result set containing data returned by a query or command.
Definition: result.hxx:70
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void clear() noexcept
Definition: result.hxx:121
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Reference to one row in a result.
Definition: row.hxx:41
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reference front() const noexcept
Definition: row.cxx:59
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Definition: transaction_base.hxx:44
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transactionfocus()=delete
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transactionfocus(const transactionfocus &)=delete
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transactionfocus & operator=(const transactionfocus &)=delete
\n+
transactionfocus(transaction_base &t)
Definition: transaction_base.hxx:46
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transaction_base & m_trans
Definition: transaction_base.hxx:63
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Helper class to construct an invocation of a parameterised statement.
Definition: transaction_base.hxx:74
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parameterized_invocation & operator()(const binarystring &v, bool nonnull)
Definition: transaction_base.hxx:84
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parameterized_invocation & operator()(const binarystring &v)
Definition: transaction_base.hxx:80
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parameterized_invocation & operator()(const T &v)
Definition: transaction_base.hxx:82
\n+
parameterized_invocation & operator()()
Definition: transaction_base.hxx:79
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parameterized_invocation & operator()(const T &v, bool nonnull)
Definition: transaction_base.hxx:87
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Interface definition (and common code) for "transaction" classes.
Definition: transaction_base.hxx:138
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result exec_params(const std::string &query, Args &&...args)
Execute an SQL statement with parameters.
Definition: transaction_base.hxx:321
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std::string quote_raw(const unsigned char str[], size_t len) const
Binary-escape and quote a binarystring for use as an SQL constant.
Definition: transaction_base.hxx:219
\n+
result exec_params_n(size_t rows, const std::string &query, Args &&...args)
Definition: transaction_base.hxx:349
\n+
std::string esc(const char str[], size_t maxlen) const
Escape string for use as SQL string literal in this transaction.
Definition: transaction_base.hxx:177
\n+
result exec(const std::stringstream &Query, const std::string &Desc=std::string{})
Definition: transaction_base.hxx:253
\n+
std::string quote(const T &t) const
Represent object as SQL string, including quoting & escaping.
Definition: transaction_base.hxx:215
\n+
transaction_base(const transaction_base &)=delete
\n+
result exec_prepared0(const std::string &statement, Args &&... args)
Execute a prepared statement, and expect a result with zero rows.
Definition: transaction_base.hxx:415
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result exec_prepared(const std::string &statement, Args &&... args)
Execute a prepared statement, with optional arguments.
Definition: transaction_base.hxx:396
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std::string esc_raw(const unsigned char data[], size_t len) const
Escape binary data for use as SQL string literal in this transaction.
Definition: transaction_base.hxx:194
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result exec0(const std::string &Query, const std::string &Desc=std::string{})
Execute query, which should zero rows of data.
Definition: transaction_base.hxx:264
\n+
transaction_base & operator=(const transaction_base &)=delete
\n+
result exec_prepared_n(size_t rows, const std::string &statement, Args &&... args)
Execute a prepared statement, expect a result with given number of rows.
Definition: transaction_base.hxx:425
\n+
connection_base & conn() const
Connection this transaction is running in.
Definition: transaction_base.hxx:492
\n+
void process_notice(const std::string &Msg) const
Have connection process warning message.
Definition: transaction_base.hxx:487
\n+
void process_notice(const char Msg[]) const
Have connection process warning message.
Definition: transaction_base.hxx:484
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row exec_params1(const std::string &query, Args &&... args)
Definition: transaction_base.hxx:331
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transaction_base()=delete
\n+
std::string unesc_raw(const std::string &text) const
Unescape binary data, e.g. from a table field or notification payload.
Definition: transaction_base.hxx:203
\n+
result exec_params0(const std::string &query, Args &&...args)
Definition: transaction_base.hxx:340
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std::string esc(const std::string &str) const
Escape string for use as SQL string literal in this transaction.
Definition: transaction_base.hxx:180
\n+
std::string quote_name(const std::string &identifier) const
Escape an SQL identifier for use in a query.
Definition: transaction_base.hxx:225
\n+
row exec_prepared1(const std::string &statement, Args &&... args)
Execute a prepared statement, and expect a single-row result.
Definition: transaction_base.hxx:406
\n+
std::string unesc_raw(const char *text) const
Unescape binary data, e.g. from a table field or notification payload.
Definition: transaction_base.hxx:210
\n+
row exec1(const std::string &Query, const std::string &Desc=std::string{})
Execute query returning a single row of data.
Definition: transaction_base.hxx:276
\n+
internal::reactivation_avoidance_counter m_reactivation_avoidance
Resources allocated in this transaction that make reactivation impossible.
Definition: transaction_base.hxx:564
\n+
std::string esc_like(const std::string &str, char escape_char='\\\\') const
Escape string for literal LIKE match.
Definition: transaction_base.hxx:229
\n+
Helper base class: object descriptions for error messages and such.
Definition: util.hxx:234
\n+
Ensure proper opening/closing of GUEST objects related to a "host" object.
Definition: util.hxx:275
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