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Support 'q' flag in jsonpath 'like_regex' predicate

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SQL/JSON standard defines that jsonpath 'like_regex' predicate should support
the same set of flags as XQuery/XPath.  It appears that implementation of 'q'
flag was missed.  This commit fixes that.

Discussion: https://postgr.es/m/CAPpHfdtyfPsxLYiTjp5Ov8T5xGsB5t3CwE5%2B3PS%3DLLwA%2BxTJog%40mail.gmail.com
Author: Nikita Glukhov, Alexander Korotkov
This commit is contained in:
Alexander Korotkov
2019-06-19 22:40:58 +03:00
parent d8594d123c
commit 261a5c1928
8 changed files with 85 additions and 0 deletions
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8
src/backend/utils/adt/jsonpath_gram.y
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@ -510,6 +510,14 @@ makeItemLikeRegex(JsonPathParseItem *expr, JsonPathString *pattern,
v->value.like_regex.flags |= JSP_REGEX_WSPACE;
cflags |= REG_EXPANDED;
break;
case 'q':
v->value.like_regex.flags |= JSP_REGEX_QUOTE;
if (!(v->value.like_regex.flags & (JSP_REGEX_MLINE | JSP_REGEX_SLINE | JSP_REGEX_WSPACE)))
{
cflags &= ~REG_ADVANCED;
cflags |= REG_QUOTE;
}
break;
default:
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),