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Throw error in jsonb_path_match() when result is not single boolean

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jsonb_path_match() checks if jsonb document matches jsonpath query.  Therefore,
jsonpath query should return single boolean.  Currently, if result of jsonpath
is not a single boolean, NULL is returned independently whether silent mode
is on or off.  But that appears to be wrong when silent mode is off.  This
commit makes jsonb_path_match() throw an error in this case.

Author: Nikita Glukhov
This commit is contained in:
Alexander Korotkov
2019-04-01 18:09:20 +03:00
parent 2e643501e5
commit b4cc19ab01
3 changed files with 80 additions and 9 deletions
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51
src/test/regress/expected/jsonb_jsonpath.out
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@@ -1769,6 +1769,57 @@ SELECT jsonb_path_exists('[{"a": 1}, {"a": 2}, {"a": 3}, {"a": 5}]', '$[*] ? (@.
f
(1 row)
SELECT jsonb_path_match('true', '$', silent => false);
jsonb_path_match
------------------
t
(1 row)
SELECT jsonb_path_match('false', '$', silent => false);
jsonb_path_match
------------------
f
(1 row)
SELECT jsonb_path_match('null', '$', silent => false);
jsonb_path_match
------------------
(1 row)
SELECT jsonb_path_match('1', '$', silent => true);
jsonb_path_match
------------------
(1 row)
SELECT jsonb_path_match('1', '$', silent => false);
ERROR: singleton SQL/JSON item required
DETAIL: expression should return a singleton boolean
SELECT jsonb_path_match('"a"', '$', silent => false);
ERROR: singleton SQL/JSON item required
DETAIL: expression should return a singleton boolean
SELECT jsonb_path_match('{}', '$', silent => false);
ERROR: singleton SQL/JSON item required
DETAIL: expression should return a singleton boolean
SELECT jsonb_path_match('[true]', '$', silent => false);
ERROR: singleton SQL/JSON item required
DETAIL: expression should return a singleton boolean
SELECT jsonb_path_match('{}', 'lax $.a', silent => false);
ERROR: singleton SQL/JSON item required
DETAIL: expression should return a singleton boolean
SELECT jsonb_path_match('{}', 'strict $.a', silent => false);
ERROR: SQL/JSON member not found
DETAIL: JSON object does not contain key "a"
SELECT jsonb_path_match('{}', 'strict $.a', silent => true);
jsonb_path_match
------------------
(1 row)
SELECT jsonb_path_match('[true, true]', '$[*]', silent => false);
ERROR: singleton SQL/JSON item required
DETAIL: expression should return a singleton boolean
SELECT jsonb '[{"a": 1}, {"a": 2}]' @@ '$[*].a > 1';
?column?
----------