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Updated/added copyright headers

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This commit is contained in:
Kent Boortz
2011-07-03 17:47:37 +02:00
parent 68f00a5686 dd49579654
commit 027b5f1ed4
475 changed files with 9872 additions and 6501 deletions
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150
sql/sql_trigger.cc
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@ -1,5 +1,5 @@
/*
Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
Copyright (c) 2004, 2011, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -21,6 +21,7 @@
#include "sp_head.h"
#include "sql_trigger.h"
#include "parse_file.h"
#include <mysys_err.h>
/*************************************************************************/
@ -294,6 +295,52 @@ private:
};
/**
An error handler that catches all non-OOM errors which can occur during
parsing of trigger body. Such errors are ignored and corresponding error
message is used to construct a more verbose error message which contains
name of problematic trigger. This error message is later emitted when
one tries to perform DML or some of DDL on this table.
Also, if possible, grabs name of the trigger being parsed so it can be
used to correctly drop problematic trigger.
*/
class Deprecated_trigger_syntax_handler : public Internal_error_handler
{
private:
char m_message[MYSQL_ERRMSG_SIZE];
LEX_STRING *m_trigger_name;
public:
Deprecated_trigger_syntax_handler() : m_trigger_name(NULL) {}
virtual bool handle_error(uint sql_errno, const char *message,
MYSQL_ERROR::enum_warning_level level, THD *thd)
{
if (sql_errno != EE_OUTOFMEMORY &&
sql_errno != ER_OUT_OF_RESOURCES)
{
if(thd->lex->spname)
m_trigger_name= &thd->lex->spname->m_name;
if (m_trigger_name)
my_snprintf(m_message, sizeof(m_message),
"Trigger '%s' has an error in its body: '%s'",
m_trigger_name->str, message);
else
my_snprintf(m_message, sizeof(m_message),
"Unknown trigger has an error in its body: '%s'",
message);
return true;
}
return false;
}
LEX_STRING *get_trigger_name() { return m_trigger_name; }
char *get_error_message() { return m_message; }
};
/**
Create or drop trigger for table.
@ -577,6 +624,8 @@ bool Table_triggers_list::create_trigger(THD *thd, TABLE_LIST *tables,
LEX_STRING *trg_connection_cl_name;
LEX_STRING *trg_db_cl_name;
if (check_for_broken_triggers())
return true;
/* Trigger must be in the same schema as target table. */
if (my_strcasecmp(table_alias_charset, table->s->db.str,
@ -850,7 +899,7 @@ static bool rm_trigger_file(char *path, const char *db,
@param path char buffer of size FN_REFLEN to be used
for constructing path to .TRN file.
@param db trigger's database name
@param table_name trigger's name
@param trigger_name trigger's name
@retval
False success
@ -1314,12 +1363,11 @@ bool Table_triggers_list::check_n_load(THD *thd, const char *db,
lex_start(thd);
thd->spcont= NULL;
if (parse_sql(thd, & parser_state, creation_ctx))
{
/* Currently sphead is always deleted in case of a parse error */
DBUG_ASSERT(lex.sphead == 0);
goto err_with_lex_cleanup;
}
Deprecated_trigger_syntax_handler error_handler;
thd->push_internal_handler(&error_handler);
bool parse_error= parse_sql(thd, & parser_state, creation_ctx);
thd->pop_internal_handler();
/*
Not strictly necessary to invoke this method here, since we know
that we've parsed CREATE TRIGGER and not an
@ -1330,6 +1378,52 @@ bool Table_triggers_list::check_n_load(THD *thd, const char *db,
*/
lex.set_trg_event_type_for_tables();
if (parse_error)
{
if (!triggers->m_has_unparseable_trigger)
triggers->set_parse_error_message(error_handler.get_error_message());
/* Currently sphead is always set to NULL in case of a parse error */
DBUG_ASSERT(lex.sphead == 0);
if (error_handler.get_trigger_name())
{
LEX_STRING *trigger_name;
const LEX_STRING *orig_trigger_name= error_handler.get_trigger_name();
if (!(trigger_name= alloc_lex_string(&table->mem_root)) ||
!(trigger_name->str= strmake_root(&table->mem_root,
orig_trigger_name->str,
orig_trigger_name->length)))
goto err_with_lex_cleanup;
trigger_name->length= orig_trigger_name->length;
if (triggers->names_list.push_back(trigger_name,
&table->mem_root))
goto err_with_lex_cleanup;
}
else
{
/*
The Table_triggers_list is not constructed as a list of
trigger objects as one would expect, but rather of lists of
properties of equal length. Thus, even if we don't get the
trigger name, we still fill all in all the lists with
placeholders as we might otherwise create a skew in the
lists. Obviously, this has to be refactored.
*/
LEX_STRING *empty= alloc_lex_string(&table->mem_root);
if (!empty)
goto err_with_lex_cleanup;
empty->str= const_cast<char*>("");
empty->length= 0;
if (triggers->names_list.push_back(empty, &table->mem_root))
goto err_with_lex_cleanup;
}
lex_end(&lex);
continue;
}
lex.sphead->set_info(0, 0, &lex.sp_chistics, (ulong) *trg_sql_mode);
int event= lex.trg_chistics.event;
@ -1370,8 +1464,8 @@ bool Table_triggers_list::check_n_load(THD *thd, const char *db,
if (triggers->names_list.push_back(&lex.sphead->m_name,
&table->mem_root))
goto err_with_lex_cleanup;
goto err_with_lex_cleanup;
if (!(on_table_name= alloc_lex_string(&table->mem_root)))
goto err_with_lex_cleanup;
@ -1396,9 +1490,8 @@ bool Table_triggers_list::check_n_load(THD *thd, const char *db,
char fname[NAME_LEN + 1];
DBUG_ASSERT((!my_strcasecmp(table_alias_charset, lex.query_tables->db, db) ||
(check_n_cut_mysql50_prefix(db, fname, sizeof(fname)) &&
!my_strcasecmp(table_alias_charset, lex.query_tables->db, fname))) &&
(!my_strcasecmp(table_alias_charset, lex.query_tables->table_name,
table_name) ||
!my_strcasecmp(table_alias_charset, lex.query_tables->db, fname))));
DBUG_ASSERT((!my_strcasecmp(table_alias_charset, lex.query_tables->table_name, table_name) ||
(check_n_cut_mysql50_prefix(table_name, fname, sizeof(fname)) &&
!my_strcasecmp(table_alias_charset, lex.query_tables->table_name, fname))));
#endif
@ -1682,6 +1775,13 @@ bool Table_triggers_list::drop_all_triggers(THD *thd, char *db, char *name)
while ((trigger= it_name++))
{
/*
Trigger, which body we failed to parse during call
Table_triggers_list::check_n_load(), might be missing name.
Such triggers have zero-length name and are skipped here.
*/
if (trigger->length == 0)
continue;
if (rm_trigname_file(path, db, trigger->str))
{
/*
@ -1905,6 +2005,11 @@ bool Table_triggers_list::change_table_name(THD *thd, const char *db,
}
if (table.triggers)
{
if (table.triggers->check_for_broken_triggers())
{
result= 1;
goto end;
}
LEX_STRING old_table_name= { (char *) old_table, strlen(old_table) };
LEX_STRING new_table_name= { (char *) new_table, strlen(new_table) };
/*
@ -1993,6 +2098,9 @@ bool Table_triggers_list::process_triggers(THD *thd,
sp_head *sp_trigger= bodies[event][time_type];
SELECT_LEX *save_current_select;
if (check_for_broken_triggers())
return true;
if (sp_trigger == NULL)
return FALSE;
@ -2071,6 +2179,22 @@ void Table_triggers_list::mark_fields_used(trg_event_type event)
}
/**
Signals to the Table_triggers_list that a parse error has occured when
reading a trigger from file. This makes the Table_triggers_list enter an
error state flagged by m_has_unparseable_trigger == true. The error message
will be used whenever a statement invoking or manipulating triggers is
issued against the Table_triggers_list's table.
@param error_message The error message thrown by the parser.
*/
void Table_triggers_list::set_parse_error_message(char *error_message)
{
m_has_unparseable_trigger= true;
strcpy(m_parse_error_message, error_message);
}
/**
Trigger BUG#14090 compatibility hook.