- Usage
JSON.STRLEN key [path]- Complexity
- O(N) where N is the number of string values matched by the path.
- Module
- valkey-json
- Since module version
- 1.0.0
- ACL Categories
- @read, @fast, @json
Get lengths of the JSON string values at the path.
Examples
Enhanced path syntax:
127.0.0.1:6379> JSON.SET k1 $ '{"a":{"a":"a"}, "b":{"a":"a", "b":1}, "c":{"a":"a", "b":"bb"}, "d":{"a":1, "b":"b", "c":3}}'
OK
127.0.0.1:6379> JSON.STRLEN k1 $.a.a
1) (integer) 1
127.0.0.1:6379> JSON.STRLEN k1 $.a.*
1) (integer) 1
127.0.0.1:6379> JSON.STRLEN k1 $.c.*
1) (integer) 1
2) (integer) 2
127.0.0.1:6379> JSON.STRLEN k1 $.c.b
1) (integer) 2
127.0.0.1:6379> JSON.STRLEN k1 $.d.*
1) (nil)
2) (integer) 1
3) (nil)
Restricted path syntax:
127.0.0.1:6379> JSON.SET k1 $ '{"a":{"a":"a"}, "b":{"a":"a", "b":1}, "c":{"a":"a", "b":"bb"}, "d":{"a":1, "b":"b", "c":3}}'
OK
127.0.0.1:6379> JSON.STRLEN k1 .a.a
(integer) 1
127.0.0.1:6379> JSON.STRLEN k1 .a.*
(integer) 1
127.0.0.1:6379> JSON.STRLEN k1 .c.*
(integer) 1
127.0.0.1:6379> JSON.STRLEN k1 .c.b
(integer) 2
127.0.0.1:6379> JSON.STRLEN k1 .d.*
(integer) 1
Replies
RESP2
- If the path is enhanced syntax:
- Array reply: Array of integers representing the length of string value at each path.
- Nil reply: For each path where the value is not a string.
- Nil reply: If the document key does not exist.
- If the path is restricted syntax:
- Simple error reply:
- if the value at the path is not a string (only for restricted syntax).
- if the path does not exist (only for restricted syntax).
RESP3
- If the path is enhanced syntax:
- Array reply: Array of integers representing the length of string value at each path.
- Null reply: For each path where the value is not a string.
- Null reply: If the document key does not exist.
- If the path is restricted syntax:
- Simple error reply:
- if the value at the path is not a string (only for restricted syntax).
- if the path does not exist (only for restricted syntax).
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