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Applied all changes from Igor and Sanja

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This commit is contained in:
Michael Widenius
2013-06-15 18:32:08 +03:00
parent 3143ad589a
commit 5f1f2fc0e4
162 changed files with 11704 additions and 6298 deletions
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776
sql/sql_error.h
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@ -19,126 +19,13 @@
#include "sql_list.h" /* Sql_alloc, MEM_ROOT */
#include "m_string.h" /* LEX_STRING */
#include "sql_string.h" /* String */
#include "sql_plist.h" /* I_P_List */
#include "mysql_com.h" /* MYSQL_ERRMSG_SIZE */
#include "my_time.h" /* MYSQL_TIME */
#include "decimal.h"
class THD;
/**
Stores status of the currently executed statement.
Cleared at the beginning of the statement, and then
can hold either OK, ERROR, or EOF status.
Can not be assigned twice per statement.
*/
class Diagnostics_area
{
public:
enum enum_diagnostics_status
{
/** The area is cleared at start of a statement. */
DA_EMPTY= 0,
/** Set whenever one calls my_ok(). */
DA_OK,
/** Set whenever one calls my_eof(). */
DA_EOF,
/** Set whenever one calls my_error() or my_message(). */
DA_ERROR,
/** Set in case of a custom response, such as one from COM_STMT_PREPARE. */
DA_DISABLED
};
/** True if status information is sent to the client. */
bool is_sent;
/** Set to make set_error_status after set_{ok,eof}_status possible. */
bool can_overwrite_status;
void set_ok_status(THD *thd, ulonglong affected_rows_arg,
ulonglong last_insert_id_arg,
const char *message);
void set_eof_status(THD *thd);
void set_error_status(THD *thd, uint sql_errno_arg, const char *message_arg,
const char *sqlstate);
void disable_status();
void reset_diagnostics_area();
bool is_set() const { return m_status != DA_EMPTY; }
bool is_error() const { return m_status == DA_ERROR; }
bool is_eof() const { return m_status == DA_EOF; }
bool is_ok() const { return m_status == DA_OK; }
bool is_disabled() const { return m_status == DA_DISABLED; }
enum_diagnostics_status status() const { return m_status; }
const char *message() const
{ DBUG_ASSERT(m_status == DA_ERROR || m_status == DA_OK); return m_message; }
uint sql_errno() const
{ DBUG_ASSERT(m_status == DA_ERROR); return m_sql_errno; }
const char* get_sqlstate() const
{ DBUG_ASSERT(m_status == DA_ERROR); return m_sqlstate; }
ulonglong affected_rows() const
{ DBUG_ASSERT(m_status == DA_OK); return m_affected_rows; }
ulonglong last_insert_id() const
{ DBUG_ASSERT(m_status == DA_OK); return m_last_insert_id; }
uint statement_warn_count() const
{
DBUG_ASSERT(m_status == DA_OK || m_status == DA_EOF);
return m_statement_warn_count;
}
/* Used to count any warnings pushed after calling set_ok_status(). */
void increment_warning()
{
if (m_status != DA_EMPTY)
m_statement_warn_count++;
}
Diagnostics_area() { reset_diagnostics_area(); }
private:
/** Message buffer. Can be used by OK or ERROR status. */
char m_message[MYSQL_ERRMSG_SIZE];
/**
SQL error number. One of ER_ codes from share/errmsg.txt.
Set by set_error_status.
*/
uint m_sql_errno;
char m_sqlstate[SQLSTATE_LENGTH+1];
/**
The number of rows affected by the last statement. This is
semantically close to thd->row_count_func, but has a different
life cycle. thd->row_count_func stores the value returned by
function ROW_COUNT() and is cleared only by statements that
update its value, such as INSERT, UPDATE, DELETE and few others.
This member is cleared at the beginning of the next statement.
We could possibly merge the two, but life cycle of thd->row_count_func
can not be changed.
*/
ulonglong m_affected_rows;
/**
Similarly to the previous member, this is a replacement of
thd->first_successful_insert_id_in_prev_stmt, which is used
to implement LAST_INSERT_ID().
*/
ulonglong m_last_insert_id;
/**
Number of warnings of this last statement. May differ from
the number of warnings returned by SHOW WARNINGS e.g. in case
the statement doesn't clear the warnings, and doesn't generate
them.
*/
uint m_statement_warn_count;
enum_diagnostics_status m_status;
};
class my_decimal;
///////////////////////////////////////////////////////////////////////////
@ -146,10 +33,8 @@ private:
Representation of a SQL condition.
A SQL condition can be a completion condition (note, warning),
or an exception condition (error, not found).
@note This class is named MYSQL_ERROR instead of SQL_condition for
historical reasons, to facilitate merging code with previous releases.
*/
class MYSQL_ERROR : public Sql_alloc
class Sql_condition : public Sql_alloc
{
public:
/*
@ -160,6 +45,7 @@ public:
*/
enum enum_warning_level
{ WARN_LEVEL_NOTE, WARN_LEVEL_WARN, WARN_LEVEL_ERROR, WARN_LEVEL_END};
/**
Get the MESSAGE_TEXT of this condition.
@return the message text.
@ -190,19 +76,15 @@ public:
Get the error level of this condition.
@return the error level condition item.
*/
MYSQL_ERROR::enum_warning_level get_level() const
Sql_condition::enum_warning_level get_level() const
{ return m_level; }
/** Destructor. */
~MYSQL_ERROR()
{}
private:
/*
The interface of MYSQL_ERROR is mostly private, by design,
The interface of Sql_condition is mostly private, by design,
so that only the following code:
- various raise_error() or raise_warning() methods in class THD,
- the implementation of SIGNAL / RESIGNAL
- the implementation of SIGNAL / RESIGNAL / GET DIAGNOSTICS
- catch / re-throw of SQL conditions in stored procedures (sp_rcontext)
is allowed to create / modify a SQL condition.
Enforcing this policy prevents confusion, since the only public
@ -212,20 +94,21 @@ private:
*/
friend class THD;
friend class Warning_info;
friend class Signal_common;
friend class Signal_statement;
friend class Resignal_statement;
friend class Sql_cmd_common_signal;
friend class Sql_cmd_signal;
friend class Sql_cmd_resignal;
friend class sp_rcontext;
friend class Condition_information_item;
/**
Default constructor.
This constructor is usefull when allocating arrays.
Note that the init() method should be called to complete the MYSQL_ERROR.
Note that the init() method should be called to complete the Sql_condition.
*/
MYSQL_ERROR();
Sql_condition();
/**
Complete the MYSQL_ERROR initialisation.
Complete the Sql_condition initialisation.
@param mem_root The memory root to use for the condition items
of this condition
*/
@ -236,15 +119,17 @@ private:
@param mem_root The memory root to use for the condition items
of this condition
*/
MYSQL_ERROR(MEM_ROOT *mem_root);
Sql_condition(MEM_ROOT *mem_root);
/** Destructor. */
~Sql_condition()
{}
/**
Copy optional condition items attributes.
@param cond the condition to copy.
*/
void copy_opt_attributes(const MYSQL_ERROR *cond);
void copy_opt_attributes(const Sql_condition *cond);
/**
Set this condition area with a fixed message text.
@ -255,7 +140,7 @@ private:
@param MyFlags additional flags.
*/
void set(uint sql_errno, const char* sqlstate,
MYSQL_ERROR::enum_warning_level level,
Sql_condition::enum_warning_level level,
const char* msg);
/**
@ -268,6 +153,12 @@ private:
/** Set the SQLSTATE of this condition. */
void set_sqlstate(const char* sqlstate);
/** Set the CLASS_ORIGIN of this condition. */
void set_class_origin();
/** Set the SUBCLASS_ORIGIN of this condition. */
void set_subclass_origin();
/**
Clear this SQL condition.
*/
@ -317,44 +208,48 @@ private:
char m_returned_sqlstate[SQLSTATE_LENGTH+1];
/** Severity (error, warning, note) of this condition. */
MYSQL_ERROR::enum_warning_level m_level;
Sql_condition::enum_warning_level m_level;
/** Pointers for participating in the list of conditions. */
Sql_condition *next_in_wi;
Sql_condition **prev_in_wi;
/** Memory root to use to hold condition item values. */
MEM_ROOT *m_mem_root;
};
class Sql_condition : public MYSQL_ERROR
{
/*
Wrapper class to allow one to use Sql_condition in handlers instead of
MYSQL_ERROR
*/
};
///////////////////////////////////////////////////////////////////////////
/**
Information about warnings of the current connection.
*/
class Warning_info
{
/** The type of the counted and doubly linked list of conditions. */
typedef I_P_List<Sql_condition,
I_P_List_adapter<Sql_condition,
&Sql_condition::next_in_wi,
&Sql_condition::prev_in_wi>,
I_P_List_counter,
I_P_List_fast_push_back<Sql_condition> >
Sql_condition_list;
/** A memory root to allocate warnings and errors */
MEM_ROOT m_warn_root;
/** List of warnings of all severities (levels). */
List <MYSQL_ERROR> m_warn_list;
Sql_condition_list m_warn_list;
/** A break down of the number of warnings per severity (level). */
uint m_warn_count[(uint) MYSQL_ERROR::WARN_LEVEL_END];
uint m_warn_count[(uint) Sql_condition::WARN_LEVEL_END];
/**
The number of warnings of the current statement. Warning_info
life cycle differs from statement life cycle -- it may span
multiple statements. In that case we get
m_statement_warn_count 0, whereas m_warn_list is not empty.
m_current_statement_warn_count 0, whereas m_warn_list is not empty.
*/
uint m_statement_warn_count;
uint m_current_statement_warn_count;
/*
Row counter, to print in errors and warnings. Not increased in
@ -365,29 +260,67 @@ class Warning_info
/** Used to optionally clear warnings only once per statement. */
ulonglong m_warn_id;
/**
A pointer to an element of m_warn_list. It determines SQL-condition
instance which corresponds to the error state in Diagnostics_area.
This is needed for properly processing SQL-conditions in SQL-handlers.
When an SQL-handler is found for the current error state in Diagnostics_area,
this pointer is needed to remove the corresponding SQL-condition from the
Warning_info list.
@note m_error_condition might be NULL in the following cases:
- Diagnostics_area set to fatal error state (like OOM);
- Max number of Warning_info elements has been reached (thus, there is
no corresponding SQL-condition object in Warning_info).
*/
const Sql_condition *m_error_condition;
/** Indicates if push_warning() allows unlimited number of warnings. */
bool m_allow_unlimited_warnings;
bool initialized; /* Set to 1 if init() has been called */
private:
Warning_info(const Warning_info &rhs); /* Not implemented */
Warning_info& operator=(const Warning_info &rhs); /* Not implemented */
/** Read only status. */
bool m_read_only;
/** Pointers for participating in the stack of Warning_info objects. */
Warning_info *m_next_in_da;
Warning_info **m_prev_in_da;
List<Sql_condition> m_marked_sql_conditions;
public:
Warning_info(ulonglong warn_id_arg, bool allow_unlimited_warnings,
bool initialize=true);
bool initialized);
~Warning_info();
/* Allocate memory for structures */
void init();
void free_memory();
private:
Warning_info(const Warning_info &rhs); /* Not implemented */
Warning_info& operator=(const Warning_info &rhs); /* Not implemented */
/**
Checks if Warning_info contains SQL-condition with the given message.
@param message_str Message string.
@param message_length Length of message string.
@return true if the Warning_info contains an SQL-condition with the given
message.
*/
bool has_sql_condition(const char *message_str, ulong message_length) const;
/**
Reset the warning information. Clear all warnings,
the number of warnings, reset current row counter
to point to the first row.
@param new_id new Warning_info id.
*/
void clear_warning_info(ulonglong warn_id_arg);
void clear(ulonglong new_id);
/**
Only clear warning info if haven't yet done that already
for the current query. Allows to be issued at any time
@ -396,46 +329,72 @@ public:
@todo: This is a sign of sloppy coding. Instead we need to
designate one place in a statement life cycle where we call
clear_warning_info().
Warning_info::clear().
@param query_id Current query id.
*/
void opt_clear_warning_info(ulonglong query_id)
void opt_clear(ulonglong query_id)
{
if (query_id != m_warn_id)
clear_warning_info(query_id);
}
void append_warning_info(THD *thd, Warning_info *source)
{
append_warnings(thd, & source->warn_list());
clear(query_id);
}
/**
Concatenate the list of warnings.
It's considered tolerable to lose a warning.
*/
void append_warnings(THD *thd, List<MYSQL_ERROR> *src)
{
MYSQL_ERROR *err;
List_iterator_fast<MYSQL_ERROR> it(*src);
/*
Don't use ::push_warning() to avoid invocation of condition
handlers or escalation of warnings to errors.
*/
while ((err= it++))
Warning_info::push_warning(thd, err);
}
/**
Conditional merge of related warning information areas.
It's considered tolerable to lose an SQL-condition in case of OOM-error,
or if the number of SQL-conditions in the Warning_info reached top limit.
@param thd Thread context.
@param source Warning_info object to copy SQL-conditions from.
*/
void merge_with_routine_info(THD *thd, Warning_info *source);
void append_warning_info(THD *thd, const Warning_info *source);
/**
Reset between two COM_ commands. Warnings are preserved
between commands, but statement_warn_count indicates
the number of warnings of this particular statement only.
*/
void reset_for_next_command() { m_statement_warn_count= 0; }
void reset_for_next_command()
{ m_current_statement_warn_count= 0; }
/**
Mark active SQL-conditions for later removal.
This is done to simulate stacked DAs for HANDLER statements.
*/
void mark_sql_conditions_for_removal();
/**
Unmark SQL-conditions, which were marked for later removal.
This is done to simulate stacked DAs for HANDLER statements.
*/
void unmark_sql_conditions_from_removal()
{ m_marked_sql_conditions.empty(); }
/**
Remove SQL-conditions that are marked for deletion.
This is done to simulate stacked DAs for HANDLER statements.
*/
void remove_marked_sql_conditions();
/**
Check if the given SQL-condition is marked for removal in this Warning_info
instance.
@param cond the SQL-condition.
@retval true if the given SQL-condition is marked for removal in this
Warning_info instance.
@retval false otherwise.
*/
bool is_marked_for_removal(const Sql_condition *cond) const;
/**
Mark a single SQL-condition for removal (add the given SQL-condition to the
removal list of this Warning_info instance).
*/
void mark_condition_for_removal(Sql_condition *cond)
{ m_marked_sql_conditions.push_back(cond, &m_warn_root); }
/**
Used for @@warning_count system variable, which prints
@ -444,52 +403,82 @@ public:
ulong warn_count() const
{
/*
This may be higher than warn_list.elements if we have
This may be higher than warn_list.elements() if we have
had more warnings than thd->variables.max_error_count.
*/
return (m_warn_count[(uint) MYSQL_ERROR::WARN_LEVEL_NOTE] +
m_warn_count[(uint) MYSQL_ERROR::WARN_LEVEL_ERROR] +
m_warn_count[(uint) MYSQL_ERROR::WARN_LEVEL_WARN]);
return (m_warn_count[(uint) Sql_condition::WARN_LEVEL_NOTE] +
m_warn_count[(uint) Sql_condition::WARN_LEVEL_ERROR] +
m_warn_count[(uint) Sql_condition::WARN_LEVEL_WARN]);
}
/**
This is for iteration purposes. We return a non-constant reference
since List doesn't have constant iterators.
*/
List<MYSQL_ERROR> &warn_list() { return m_warn_list; }
/**
The number of errors, or number of rows returned by SHOW ERRORS,
also the value of session variable @@error_count.
*/
ulong error_count() const
{ return m_warn_count[(uint) Sql_condition::WARN_LEVEL_ERROR]; }
/**
The number of conditions (errors, warnings and notes) in the list.
*/
uint cond_count() const
{
return m_warn_count[(uint) MYSQL_ERROR::WARN_LEVEL_ERROR];
return m_warn_list.elements();
}
/** Id of the warning information area. */
ulonglong warn_id() const { return m_warn_id; }
ulonglong id() const { return m_warn_id; }
/** Set id of the warning information area. */
void id(ulonglong id) { m_warn_id= id; }
/** Do we have any errors and warnings that we can *show*? */
bool is_empty() const { return m_warn_list.elements == 0; }
bool is_empty() const { return m_warn_list.is_empty(); }
/** Increment the current row counter to point at the next row. */
void inc_current_row_for_warning() { m_current_row_for_warning++; }
/** Reset the current row counter. Start counting from the first row. */
void reset_current_row_for_warning() { m_current_row_for_warning= 1; }
/** Return the current counter value. */
ulong current_row_for_warning() const { return m_current_row_for_warning; }
ulong statement_warn_count() const { return m_statement_warn_count; }
/** Return the number of warnings thrown by the current statement. */
ulong current_statement_warn_count() const
{ return m_current_statement_warn_count; }
/** Add a new condition to the current list. */
MYSQL_ERROR *push_warning(THD *thd,
uint sql_errno, const char* sqlstate,
MYSQL_ERROR::enum_warning_level level,
const char* msg);
/** Make sure there is room for the given number of conditions. */
void reserve_space(THD *thd, uint count);
/** Add a new condition to the current list. */
MYSQL_ERROR *push_warning(THD *thd, const MYSQL_ERROR *sql_condition);
/**
Add a new SQL-condition to the current list and increment the respective
counters.
@param thd Thread context.
@param sql_errno SQL-condition error number.
@param sqlstate SQL-condition state.
@param level SQL-condition level.
@param msg SQL-condition message.
@return a pointer to the added SQL-condition.
*/
Sql_condition *push_warning(THD *thd,
uint sql_errno,
const char* sqlstate,
Sql_condition::enum_warning_level level,
const char* msg);
/**
Add a new SQL-condition to the current list and increment the respective
counters.
@param thd Thread context.
@param sql_condition SQL-condition to copy values from.
@return a pointer to the added SQL-condition.
*/
Sql_condition *push_warning(THD *thd, const Sql_condition *sql_condition);
/**
Set the read only status for this statement area.
@ -500,25 +489,51 @@ public:
- SHOW WARNINGS
- SHOW ERRORS
- GET DIAGNOSTICS
@param read_only the read only property to set
@param read_only the read only property to set.
*/
void set_read_only(bool read_only)
{ m_read_only= read_only; }
/**
Read only status.
@return the read only property
@return the read only property.
*/
bool is_read_only() const
{ return m_read_only; }
private:
/** Read only status. */
bool m_read_only;
/**
@return SQL-condition, which corresponds to the error state in
Diagnostics_area.
friend class Resignal_statement;
@see m_error_condition.
*/
const Sql_condition *get_error_condition() const
{ return m_error_condition; }
/**
Set SQL-condition, which corresponds to the error state in Diagnostics_area.
@see m_error_condition.
*/
void set_error_condition(const Sql_condition *error_condition)
{ m_error_condition= error_condition; }
/**
Reset SQL-condition, which corresponds to the error state in
Diagnostics_area.
@see m_error_condition.
*/
void clear_error_condition()
{ m_error_condition= NULL; }
// for:
// - m_next_in_da / m_prev_in_da
// - is_marked_for_removal()
friend class Diagnostics_area;
};
extern char *err_conv(char *buff, uint to_length, const char *from,
uint from_length, CHARSET_INFO *from_cs);
@ -592,15 +607,352 @@ public:
}
};
void push_warning(THD *thd, MYSQL_ERROR::enum_warning_level level,
///////////////////////////////////////////////////////////////////////////
/**
Stores status of the currently executed statement.
Cleared at the beginning of the statement, and then
can hold either OK, ERROR, or EOF status.
Can not be assigned twice per statement.
*/
class Diagnostics_area
{
private:
/** The type of the counted and doubly linked list of conditions. */
typedef I_P_List<Warning_info,
I_P_List_adapter<Warning_info,
&Warning_info::m_next_in_da,
&Warning_info::m_prev_in_da>,
I_P_List_counter,
I_P_List_fast_push_back<Warning_info> >
Warning_info_list;
public:
/** Const iterator used to iterate through the warning list. */
typedef Warning_info::Sql_condition_list::Const_Iterator
Sql_condition_iterator;
enum enum_diagnostics_status
{
/** The area is cleared at start of a statement. */
DA_EMPTY= 0,
/** Set whenever one calls my_ok(). */
DA_OK,
/** Set whenever one calls my_eof(). */
DA_EOF,
/** Set whenever one calls my_error() or my_message(). */
DA_ERROR,
/** Set in case of a custom response, such as one from COM_STMT_PREPARE. */
DA_DISABLED
};
void set_overwrite_status(bool can_overwrite_status)
{ m_can_overwrite_status= can_overwrite_status; }
/** True if status information is sent to the client. */
bool is_sent() const { return m_is_sent; }
void set_is_sent(bool is_sent) { m_is_sent= is_sent; }
void set_ok_status(ulonglong affected_rows,
ulonglong last_insert_id,
const char *message);
void set_eof_status(THD *thd);
void set_error_status(uint sql_errno);
void set_error_status(uint sql_errno,
const char *message,
const char *sqlstate,
const Sql_condition *error_condition);
void disable_status();
void reset_diagnostics_area();
bool is_set() const { return m_status != DA_EMPTY; }
bool is_error() const { return m_status == DA_ERROR; }
bool is_eof() const { return m_status == DA_EOF; }
bool is_ok() const { return m_status == DA_OK; }
bool is_disabled() const { return m_status == DA_DISABLED; }
enum_diagnostics_status status() const { return m_status; }
const char *message() const
{ DBUG_ASSERT(m_status == DA_ERROR || m_status == DA_OK); return m_message; }
uint sql_errno() const
{ DBUG_ASSERT(m_status == DA_ERROR); return m_sql_errno; }
const char* get_sqlstate() const
{ DBUG_ASSERT(m_status == DA_ERROR); return m_sqlstate; }
ulonglong affected_rows() const
{ DBUG_ASSERT(m_status == DA_OK); return m_affected_rows; }
ulonglong last_insert_id() const
{ DBUG_ASSERT(m_status == DA_OK); return m_last_insert_id; }
uint statement_warn_count() const
{
DBUG_ASSERT(m_status == DA_OK || m_status == DA_EOF);
return m_statement_warn_count;
}
/* Used to count any warnings pushed after calling set_ok_status(). */
void increment_warning()
{
if (m_status != DA_EMPTY)
m_statement_warn_count++;
}
Diagnostics_area(bool initialize);
Diagnostics_area(ulonglong warning_info_id, bool allow_unlimited_warnings);
void init() { m_main_wi.init() ; }
void free_memory() { m_main_wi.free_memory() ; }
void push_warning_info(Warning_info *wi)
{ m_wi_stack.push_front(wi); }
void pop_warning_info()
{
DBUG_ASSERT(m_wi_stack.elements() > 0);
m_wi_stack.remove(m_wi_stack.front());
}
void set_warning_info_id(ulonglong id)
{ get_warning_info()->id(id); }
ulonglong warning_info_id() const
{ return get_warning_info()->id(); }
/**
Compare given current warning info and current warning info
and see if they are different. They will be different if
warnings have been generated or statements that use tables
have been executed. This is checked by comparing m_warn_id.
@param wi Warning info to compare with current Warning info.
@return false if they are equal, true if they are not.
*/
bool warning_info_changed(const Warning_info *wi) const
{ return get_warning_info()->id() != wi->id(); }
bool is_warning_info_empty() const
{ return get_warning_info()->is_empty(); }
ulong current_statement_warn_count() const
{ return get_warning_info()->current_statement_warn_count(); }
bool has_sql_condition(const char *message_str, ulong message_length) const
{ return get_warning_info()->has_sql_condition(message_str, message_length); }
void reset_for_next_command()
{ get_warning_info()->reset_for_next_command(); }
void clear_warning_info(ulonglong id)
{ get_warning_info()->clear(id); }
void opt_clear_warning_info(ulonglong query_id)
{ get_warning_info()->opt_clear(query_id); }
ulong current_row_for_warning() const
{ return get_warning_info()->current_row_for_warning(); }
void inc_current_row_for_warning()
{ get_warning_info()->inc_current_row_for_warning(); }
void reset_current_row_for_warning()
{ get_warning_info()->reset_current_row_for_warning(); }
bool is_warning_info_read_only() const
{ return get_warning_info()->is_read_only(); }
void set_warning_info_read_only(bool read_only)
{ get_warning_info()->set_read_only(read_only); }
ulong error_count() const
{ return get_warning_info()->error_count(); }
ulong warn_count() const
{ return get_warning_info()->warn_count(); }
uint cond_count() const
{ return get_warning_info()->cond_count(); }
Sql_condition_iterator sql_conditions() const
{ return get_warning_info()->m_warn_list; }
void reserve_space(THD *thd, uint count)
{ get_warning_info()->reserve_space(thd, count); }
Sql_condition *push_warning(THD *thd, const Sql_condition *sql_condition)
{ return get_warning_info()->push_warning(thd, sql_condition); }
Sql_condition *push_warning(THD *thd,
uint sql_errno,
const char* sqlstate,
Sql_condition::enum_warning_level level,
const char* msg)
{
return get_warning_info()->push_warning(thd,
sql_errno, sqlstate, level, msg);
}
void mark_sql_conditions_for_removal()
{ get_warning_info()->mark_sql_conditions_for_removal(); }
void unmark_sql_conditions_from_removal()
{ get_warning_info()->unmark_sql_conditions_from_removal(); }
void remove_marked_sql_conditions()
{ get_warning_info()->remove_marked_sql_conditions(); }
const Sql_condition *get_error_condition() const
{ return get_warning_info()->get_error_condition(); }
void copy_sql_conditions_to_wi(THD *thd, Warning_info *dst_wi) const
{ dst_wi->append_warning_info(thd, get_warning_info()); }
void copy_sql_conditions_from_wi(THD *thd, const Warning_info *src_wi)
{ get_warning_info()->append_warning_info(thd, src_wi); }
void copy_non_errors_from_wi(THD *thd, const Warning_info *src_wi);
private:
Warning_info *get_warning_info() { return m_wi_stack.front(); }
const Warning_info *get_warning_info() const { return m_wi_stack.front(); }
private:
/** True if status information is sent to the client. */
bool m_is_sent;
/** Set to make set_error_status after set_{ok,eof}_status possible. */
bool m_can_overwrite_status;
/** Message buffer. Can be used by OK or ERROR status. */
char m_message[MYSQL_ERRMSG_SIZE];
/**
SQL error number. One of ER_ codes from share/errmsg.txt.
Set by set_error_status.
*/
uint m_sql_errno;
char m_sqlstate[SQLSTATE_LENGTH+1];
/**
The number of rows affected by the last statement. This is
semantically close to thd->row_count_func, but has a different
life cycle. thd->row_count_func stores the value returned by
function ROW_COUNT() and is cleared only by statements that
update its value, such as INSERT, UPDATE, DELETE and few others.
This member is cleared at the beginning of the next statement.
We could possibly merge the two, but life cycle of thd->row_count_func
can not be changed.
*/
ulonglong m_affected_rows;
/**
Similarly to the previous member, this is a replacement of
thd->first_successful_insert_id_in_prev_stmt, which is used
to implement LAST_INSERT_ID().
*/
ulonglong m_last_insert_id;
/**
Number of warnings of this last statement. May differ from
the number of warnings returned by SHOW WARNINGS e.g. in case
the statement doesn't clear the warnings, and doesn't generate
them.
*/
uint m_statement_warn_count;
enum_diagnostics_status m_status;
Warning_info m_main_wi;
Warning_info_list m_wi_stack;
};
///////////////////////////////////////////////////////////////////////////
void push_warning(THD *thd, Sql_condition::enum_warning_level level,
uint code, const char *msg);
void push_warning_printf(THD *thd, MYSQL_ERROR::enum_warning_level level,
uint code, const char *format, ...);
void push_warning_printf(THD *thd, Sql_condition::enum_warning_level level,
uint code, const char *format, ...);
bool mysqld_show_warnings(THD *thd, ulong levels_to_show);
uint32 convert_error_message(char *to, uint32 to_length, CHARSET_INFO *to_cs,
uint32 convert_error_message(char *to, uint32 to_length,
CHARSET_INFO *to_cs,
const char *from, uint32 from_length,
CHARSET_INFO *from_cs, uint *errors);
extern const LEX_STRING warning_level_names[];
bool is_sqlstate_valid(const LEX_STRING *sqlstate);
/**
Checks if the specified SQL-state-string defines COMPLETION condition.
This function assumes that the given string contains a valid SQL-state.
@param s the condition SQLSTATE.
@retval true if the given string defines COMPLETION condition.
@retval false otherwise.
*/
inline bool is_sqlstate_completion(const char *s)
{ return s[0] == '0' && s[1] == '0'; }
/**
Checks if the specified SQL-state-string defines WARNING condition.
This function assumes that the given string contains a valid SQL-state.
@param s the condition SQLSTATE.
@retval true if the given string defines WARNING condition.
@retval false otherwise.
*/
inline bool is_sqlstate_warning(const char *s)
{ return s[0] == '0' && s[1] == '1'; }
/**
Checks if the specified SQL-state-string defines NOT FOUND condition.
This function assumes that the given string contains a valid SQL-state.
@param s the condition SQLSTATE.
@retval true if the given string defines NOT FOUND condition.
@retval false otherwise.
*/
inline bool is_sqlstate_not_found(const char *s)
{ return s[0] == '0' && s[1] == '2'; }
/**
Checks if the specified SQL-state-string defines EXCEPTION condition.
This function assumes that the given string contains a valid SQL-state.
@param s the condition SQLSTATE.
@retval true if the given string defines EXCEPTION condition.
@retval false otherwise.
*/
inline bool is_sqlstate_exception(const char *s)
{ return s[0] != '0' || s[1] > '2'; }
#endif // SQL_ERROR_H