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MDEV-27911: Implement range notation for json path

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Range can be thought about in similar manner as wildcard (*) where
more than one elements are processed. To implement range notation, extended
json parser to parse the 'to' keyword and added JSON_PATH_ARRAY_RANGE for
path type. If there is 'to' keyword then use JSON_PATH_ARRAY range for
path type along with existing type.
This new integer to store the end index of range is n_item_end.
When there is 'to' keyword, store the integer in n_item_end else store in
n_item.
This commit is contained in:
Rucha Deodhar
2022-03-05 01:03:49 +05:30
parent abe9712194
commit c781cefd8a
8 changed files with 480 additions and 88 deletions
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189
mysql-test/main/func_json.result
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@@ -2029,5 +2029,194 @@ SELECT JSON_VALUE(@json,'$.x[0]');
JSON_VALUE(@json,'$.x[0]')
0
#
# MDEV-27911: Implement range notation for json path
#
SET @json= '[
[1, {"key1": "value1"}, 3],
[false, 5, 6],
[7, 8, [9, {"key2": 2}, 11]],
[15, 1.34, [14], ["string1", [16, {"key1":[1,2,3,[4,5,6]]}, 18]]],
[19, 20],
21, 22
]';
SELECT JSON_EXISTS(@json, '$[3][3][-2 to last]');
JSON_EXISTS(@json, '$[3][3][-2 to last]')
1
SET @json= '[
[1, {"key1": "value1"}, 3],
[false, 5, 6],
[7, 8, [9, {"key2": 2}, 11]],
[15, 1.34, [14], ["string1", [16, {"key1":[1,2,3,[4,5,6]]}, 18]]],
[19, 20],
21, 22
]';
SELECT JSON_SEARCH(@json, 'one', '12', NULL, '$[3][0 to 3]');
JSON_SEARCH(@json, 'one', '12', NULL, '$[3][0 to 3]')
NULL
SET @json= '[
[1, {"key1": "value1"}, 3],
[false, 5, 6],
[7, 8, [9, {"key2": 2}, 11]],
[12, 1.34, [14], ["string1", [16, {"key1":[1,2,3,[4,5,6]]}, 18]]],
[19, 20]
]';
SELECT JSON_VALUE(@json, '$[0][1 to 2].key1');
JSON_VALUE(@json, '$[0][1 to 2].key1')
value1
SET @json='{
"A": [0,
[1, 2, 3],
[4, 5, 6],
"seven",
0.8,
true,
false,
"eleven",
[12, [13, 14], {"key1":"value1"},[15]],
true],
"B": {"C": 1},
"D": 2
}';
SELECT JSON_QUERY(@json, '$.A[-2][-3 to -1]');
JSON_QUERY(@json, '$.A[-2][-3 to -1]')
[13, 14]
SET @json= '[
[1, {"key1": "value1"}, 3],
[false, 5, 6],
[7, 8, [9, {"key2": 2}, 11]],
[15, 1.34, [14], ["string1", [16, {"key1":[1,2,3,[4,5,6]]}, 18]]],
[19, 20],
21, 22
]';
SELECT JSON_EXTRACT(@json, '$[0 to 3][2]');
JSON_EXTRACT(@json, '$[0 to 3][2]')
[3, 6, [9, {"key2": 2}, 11], [14]]
SELECT JSON_EXTRACT(@json, '$[3][3][last-1 to last]');
JSON_EXTRACT(@json, '$[3][3][last-1 to last]')
["string1", [16, {"key1": [1, 2, 3, [4, 5, 6]]}, 18]]
SELECT JSON_EXTRACT(@json, '$[3][3][-2 to -1]');
JSON_EXTRACT(@json, '$[3][3][-2 to -1]')
["string1", [16, {"key1": [1, 2, 3, [4, 5, 6]]}, 18]]
# Checking errors
SET @json= '[
[1, {"key1": "value1"}, 3],
[false, 5, 6],
[7, 8, [9, {"key2": 2}, 11]],
[15, 1.34, [14], ["string1", [16, {"key1":[1,2,3,[4,5,6]]}, 18]]],
[19, 20],
21, 22
]';
SELECT JSON_CONTAINS_PATH(@json,'one', '$[3][0 to 3]');
JSON_CONTAINS_PATH(@json,'one', '$[3][0 to 3]')
1
SET @json= '[
[1, {"key1": "value1"}, 3],
[false, 5, 6],
[7, 8, [9, {"key2": 2}, 11]],
[15, 1.34, [14], ["string1", [16, {"key1":[1,2,3,[4,5,6]]}, 18]]],
[19, 20],
21, 22
]';
SELECT JSON_CONTAINS(@json, '$[3][0 to 3]');
JSON_CONTAINS(@json, '$[3][0 to 3]')
NULL
Warnings:
Warning 4038 Syntax error in JSON text in argument 2 to function 'json_contains' at position 1
SET @json='{
"A": [0,
[1, 2, 3],
[4, 5, 6],
"seven",
0.8,
true,
false,
"eleven",
[12, 13, {"key1":"value1"},[15]],
true],
"B": {"C": 1},
"D": 2
}';
SELECT JSON_ARRAY_INSERT(@json, '$.A[0 to last-1]', 5);
JSON_ARRAY_INSERT(@json, '$.A[0 to last-1]', 5)
NULL
Warnings:
Warning 4044 Wildcards or range in JSON path not allowed in argument 2 to function 'json_array_insert'
SET @json='{
"A": [0,
[1, 2, 3],
[4, 5, 6],
"seven",
0.8,
true,
false,
"eleven",
[12, 13, {"key1":"value1"},[15]],
true],
"B": {"C": 1},
"D": 2
}';
SELECT JSON_ARRAY_APPEND(@json, '$.A[*]', 7);
JSON_ARRAY_APPEND(@json, '$.A[*]', 7)
NULL
Warnings:
Warning 4044 Wildcards or range in JSON path not allowed in argument 2 to function 'json_array_append'
SET @json= '[
[1, {"key1": "value1"}, 3],
[false, 5, 6],
[7, 8, [9, {"key2": 2}, 11]],
[12, 1.34, [14], ["string1", [16, {"key1":[1,2,3,[4,5,6]]}, 18]]],
[19, 20]
]';
SELECT JSON_SET(@json, '$[0][1 to 2].key1', 1);
JSON_SET(@json, '$[0][1 to 2].key1', 1)
NULL
Warnings:
Warning 4044 Wildcards or range in JSON path not allowed in argument 2 to function 'json_set'
SET @json= '[
[1, {"key1": "value1"}, 3],
[false, 5, 6],
[7, 8, [9, {"key2": 2}, 11]],
[15, 1.34, [14], ["string1", [16, {"key1":[1,2,3,[4,5,6]]}, 18]]],
[19, 20],
21, 22
]';
SELECT JSON_REPLACE(@json, '$[1][last-2 to last]', 4);
JSON_REPLACE(@json, '$[1][last-2 to last]', 4)
NULL
Warnings:
Warning 4044 Wildcards or range in JSON path not allowed in argument 2 to function 'json_replace'
SET @json= '[
[1, {"key1": "value1"}, 3],
[false, 5, 6],
[7, 8, [9, {"key2": 2}, 11]],
[15, 1.34, [14], ["string1", [16, {"key1":[1,2,3,[4,5,6]]}, 18]]],
[19, 20],
21, 22
]';
SELECT JSON_REMOVE(@json, '$[1][-6 to last-2]');
JSON_REMOVE(@json, '$[1][-6 to last-2]')
NULL
Warnings:
Warning 4044 Wildcards or range in JSON path not allowed in argument 2 to function 'json_remove'
SET @json='{
"A": [0,
[1, 2, 3],
[4, 5, 6],
"seven",
0.8,
true,
false,
"eleven",
[12, [13, 14], {"key1":"value1"},[15]],
true],
"B": {"C": 1},
"D": 2
}';
SELECT JSON_KEYS(@json, '$.A[8][1 to 3]');
JSON_KEYS(@json, '$.A[8][1 to 3]')
NULL
Warnings:
Warning 4044 Wildcards or range in JSON path not allowed in argument 2 to function 'json_keys'
#
# End of 10.9 Test
#