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Improve documentation of json parser functions

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Signed-off-by: Michael Okoko <okokomichaels@outlook.com>
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Michael Okoko 2021-07-22 12:40:15 +01:00 committed by Vicențiu-Marian Ciorbaru
parent aafb888657
commit 6cd3588f0e
1 changed files with 11 additions and 9 deletions
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20
include/mysql/service_json.h
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@ -20,23 +20,25 @@
@file @file
json service json service
Esports JSON parsing methods for plugins to use. Exports JSON parsing methods for plugins to use.
Fuctions of the service: Functions of the service:
js_type - returns the type of the JSON argument, json_type - returns the type of the JSON argument,
and the parsed value if it's scalar (not object or array) and the parsed value if it's scalar (not object or array)
js_get_array_item - expecs JSON array as an argument, json_get_array_item - expects JSON array as an argument,
and returns the n_item's item's type and value and returns the type of the element at index `n_item`.
Returns JSV_NOTHING type if the array is shorter Returns JSV_NOTHING type if the array is shorter
than n_item and the actual length of the array in v_len. than n_item and the actual length of the array in value_len.
If successful, then `value` up till `value[value_len]` contains the array
element at the desired index (n_item).
js_get_object_key - expects JSON object as an argument, json_get_object_key - expects JSON object as an argument,
searches for a key in the object, return it's type and value. searches for a key in the object, return it's type and stores its value in `value`.
JSV_NOTHING if no such key found, the number of keys JSV_NOTHING if no such key found, the number of keys
in v_len. in v_len.
js_get_object_nkey - expects JSON object as an argument. json_get_object_nkey - expects JSON object as an argument.
finds n_key's key in the object, returns it's name, type and value. finds n_key's key in the object, returns it's name, type and value.
JSV_NOTHING if object has less keys than n_key. JSV_NOTHING if object has less keys than n_key.
*/ */