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MDEV-11569 JSON_ARRAY_INSERT produces an invalid result.

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String insertion fixed.
This commit is contained in:
Alexey Botchkov
2016-12-16 13:51:35 +04:00
parent beded4350f
commit 30c231b03a
3 changed files with 34 additions and 27 deletions
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5
mysql-test/r/func_json.result
View File

@ -75,10 +75,13 @@ json_array_insert('["a", {"b": [1, 2]}, [3, 4]]', '$[4]', 'x')
["a", {"b": [1, 2]}, [3, 4], "x"]
select json_array_insert('["a", {"b": [1, 2]}, [3, 4]]', '$[1].b[0]', 'x');
json_array_insert('["a", {"b": [1, 2]}, [3, 4]]', '$[1].b[0]', 'x')
["a", {"b": [ "x",1, 2]}, [3, 4]]
["a", {"b": ["x", 1, 2]}, [3, 4]]
select json_array_insert('true', '$', 1);
json_array_insert('true', '$', 1)
NULL
select json_array_insert('["a", {"b": [1, 2]}, [3, 4]]', '$[2][1]', 'y');
json_array_insert('["a", {"b": [1, 2]}, [3, 4]]', '$[2][1]', 'y')
["a", {"b": [1, 2]}, [3, "y", 4]]
select json_contains('{"k1":123, "k2":345}', '123', '$.k1');
json_contains('{"k1":123, "k2":345}', '123', '$.k1')
1

1
mysql-test/t/func_json.test
View File

@ -30,6 +30,7 @@ select json_array_insert('["a", {"b": [1, 2]}, [3, 4]]', '$[3]', 'x');
select json_array_insert('["a", {"b": [1, 2]}, [3, 4]]', '$[4]', 'x');
select json_array_insert('["a", {"b": [1, 2]}, [3, 4]]', '$[1].b[0]', 'x');
select json_array_insert('true', '$', 1);
select json_array_insert('["a", {"b": [1, 2]}, [3, 4]]', '$[2][1]', 'y');
select json_contains('{"k1":123, "k2":345}', '123', '$.k1');
select json_contains('"you"', '"you"');

55
sql/item_jsonfunc.cc
View File

@ -1396,27 +1396,19 @@ String *Item_func_json_array_insert::val_str(String *str)
item_pos= 0;
n_item= 0;
while (json_scan_next(&je) == 0 &&
je.state != JST_ARRAY_END && item_pos == 0)
while (json_scan_next(&je) == 0 && je.state != JST_ARRAY_END)
{
switch (je.state)
DBUG_ASSERT(je.state == JST_VALUE);
if (n_item == c_path->p.last_step[1].n_item)
{
case JST_VALUE:
if (n_item == c_path->p.last_step[1].n_item)
{
item_pos= (const char *) je.s.c_str;
break;
}
n_item++;
break;
case JST_OBJ_START:
case JST_ARRAY_START:
if (json_skip_level(&je))
break;
break;
default:
item_pos= (const char *) je.s.c_str;
break;
}
n_item++;
if (json_read_value(&je) ||
(!json_value_scalar(&je) && json_skip_level(&je)))
goto js_error;
}
if (je.s.error)
@ -1424,16 +1416,27 @@ String *Item_func_json_array_insert::val_str(String *str)
str->length(0);
str->set_charset(js->charset());
if (!item_pos)
if (item_pos)
{
if (append_simple(str, js->ptr(), item_pos - js->ptr()) ||
(n_item > 0 && str->append(" ", 1)) ||
append_json_value(str, args[n_arg+1], &tmp_val) ||
str->append(",", 1) ||
(n_item == 0 && str->append(" ", 1)) ||
append_simple(str, item_pos, js->end() - item_pos))
goto return_null; /* Out of memory. */
}
else
{
/* Insert position wasn't found - append to the array. */
DBUG_ASSERT(je.state == JST_ARRAY_END);
item_pos= (const char *) (je.s.c_str - je.sav_c_len);
if (append_simple(str, js->ptr(), item_pos - js->ptr()) ||
((je.state == JST_ARRAY_END) ?
(n_item > 0 && str->append(", ", 2)) : str->append(" ", 1)) ||
append_json_value(str, args[n_arg+1], &tmp_val) ||
(je.state != JST_ARRAY_END && str->append(",", 1)) ||
append_simple(str, item_pos, js->end() - item_pos))
goto return_null; /* Out of memory. */
if (append_simple(str, js->ptr(), item_pos - js->ptr()) ||
(n_item > 0 && str->append(", ", 2)) ||
append_json_value(str, args[n_arg+1], &tmp_val) ||
append_simple(str, item_pos, js->end() - item_pos))
goto return_null; /* Out of memory. */
}
{
/* Swap str and js. */