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Applied Roger's async validation patch, with a minimal test case

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This commit is contained in:
Lourens Naude 2008-10-19 23:17:42 +01:00
parent 9d66a3b71e
commit 1af85383eb
2 changed files with 48 additions and 5 deletions
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38
ext/mysql.c
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@ -893,6 +893,29 @@ static VALUE simulate_disconnect( VALUE obj )
return Qnil;
}
static int begins_with_insensitive(char *candidate, char *check_for_in_upper_case)
{
/* skip opening whitespace --tab is 11, newline is 12, cr is 15, space 32 */
char *where_at = candidate;
while( ((*where_at >= 11 && *where_at <= 15) || (*where_at == 32)) && (where_at != 0))
where_at++;
char *where_at_in_test = check_for_in_upper_case;
while(*where_at_in_test)
{
int candidate_char = *where_at;
if(candidate_char == 0)
return 0; /* end of line */
if(candidate_char >= 97 && candidate_char < 122) /* then it's upper case --lower case ify it */
candidate_char -= 32;
if(candidate_char != *where_at_in_test)
return 0;
where_at_in_test++;
where_at++;
}
return 1;
}
/* send_query(sql) */
static VALUE send_query(VALUE obj, VALUE sql)
{
@ -910,7 +933,22 @@ static VALUE send_query(VALUE obj, VALUE sql)
mysql_raise(m);
}
/* what about http://dev.mysql.com/doc/refman/5.0/en/implicit-commit.html and more? */
if(
begins_with_insensitive(RSTRING_PTR(sql), "SET ") ||
begins_with_insensitive(RSTRING_PTR(sql), "BEGIN") ||
begins_with_insensitive(RSTRING_PTR(sql), "START TRANSACTION") ||
begins_with_insensitive(RSTRING_PTR(sql), "ROLLBACK") ||
begins_with_insensitive(RSTRING_PTR(sql), "LOCK ") ||
begins_with_insensitive(RSTRING_PTR(sql), "UNLOCK ") ||
begins_with_insensitive(RSTRING_PTR(sql), "USE ") ||
begins_with_insensitive(RSTRING_PTR(sql), "COMMIT") )
{
/* do not mark an async in progress --they used send_query for something that doesn't necessarily have a result--is this allowable? */
async_in_progress_set( obj, Qfalse );
} else {
async_in_progress_set( obj, Qtrue );
}
return Qnil;
}

5
test/out_of_sync_test.rb
View File

@ -24,3 +24,8 @@ m.close
m.connect('localhost','root')
m.safe_query( 'select sleep(1)' )
m.safe_query( 'select sleep(1)' )#raises
m.simulate_disconnect
m.safe_query( 'BEGIN' )
m.safe_query( 'select sleep(1)' )
m.get_result()
m.safe_query( 'COMMIT' )