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Merge spetrunia@bk-internal.mysql.com:/home/bk/mysql-4.1

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into mysql.com:/dbdata/psergey/mysql-4.1-ps-merge
This commit is contained in:
sergefp@mysql.com
2004-06-01 17:29:13 +04:00
parent 2b2e7e4580 e3b03d7a08
commit dc38512390
38 changed files with 1142 additions and 156 deletions
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38
sql/sql_class.h
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@@ -461,6 +461,7 @@ public:
*/
bool allow_sum_func;
LEX_STRING name; /* name for named prepared statements */
LEX *lex; // parse tree descriptor
/*
Points to the query associated with this statement. It's const, but
@@ -527,8 +528,14 @@ public:
/*
Used to seek all existing statements in the connection
Deletes all statements in destructor.
Container for all statements created/used in a connection.
Statements in Statement_map have unique Statement::id (guaranteed by id
assignment in Statement::Statement)
Non-empty statement names are unique too: attempt to insert a new statement
with duplicate name causes older statement to be deleted
Statements are auto-deleted when they are removed from the map and when the
map is deleted.
*/
class Statement_map
@@ -536,34 +543,47 @@ class Statement_map
public:
Statement_map();
int insert(Statement *statement)
int insert(Statement *statement);
Statement *find_by_name(LEX_STRING *name)
{
int rc= my_hash_insert(&st_hash, (byte *) statement);
if (rc == 0)
last_found_statement= statement;
return rc;
Statement *stmt;
stmt= (Statement*)hash_search(&names_hash, (byte*)name->str,
name->length);
return stmt;
}
Statement *find(ulong id)
{
if (last_found_statement == 0 || id != last_found_statement->id)
last_found_statement= (Statement *) hash_search(&st_hash, (byte *) &id,
sizeof(id));
{
Statement *stmt;
stmt= (Statement *) hash_search(&st_hash, (byte *) &id, sizeof(id));
if (stmt->name.str)
return NULL;
last_found_statement= stmt;
}
return last_found_statement;
}
void erase(Statement *statement)
{
if (statement == last_found_statement)
last_found_statement= 0;
if (statement->name.str)
{
hash_delete(&names_hash, (byte *) statement);
}
hash_delete(&st_hash, (byte *) statement);
}
~Statement_map()
{
hash_free(&st_hash);
hash_free(&names_hash);
}
private:
HASH st_hash;
HASH names_hash;
Statement *last_found_statement;
};