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Rename JsonIsPredicate.value_type, fix JSON backend/nodes/ infrastructure.

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I started out with the intention to rename value_type to item_type to
avoid a collision with a typedef name that appears on some platforms.

Along the way, I noticed that the adjacent field "format" was not being
correctly handled by the backend/nodes/ infrastructure functions:
copyfuncs.c erroneously treated it as a scalar, while equalfuncs,
outfuncs, and readfuncs omitted handling it at all.  This looks like
it might be cosmetic at the moment because the field is always NULL
after parse analysis; but that's likely a bug in itself, and the code's
certainly not very future-proof.  Let's fix it while we can still do so
without forcing an initdb on beta testers.

Further study found a few other inconsistencies in the backend/nodes/
infrastructure for the recently-added JSON node types, so fix those too.

catversion bumped because of potential change in stored rules.

Discussion: https://postgr.es/m/526703.1652385613@sss.pgh.pa.us
This commit is contained in:
Tom Lane
2022-05-13 11:40:01 -04:00
parent 2454cb07ee
commit 3ab9a63cb6
12 changed files with 52 additions and 42 deletions
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16
src/backend/nodes/outfuncs.c
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@@ -1801,13 +1801,13 @@ _outJsonConstructorExpr(StringInfo str, const JsonConstructorExpr *node)
{
WRITE_NODE_TYPE("JSONCONSTRUCTOREXPR");
WRITE_ENUM_FIELD(type, JsonConstructorType);
WRITE_NODE_FIELD(args);
WRITE_NODE_FIELD(func);
WRITE_NODE_FIELD(coercion);
WRITE_ENUM_FIELD(type, JsonConstructorType);
WRITE_NODE_FIELD(returning);
WRITE_BOOL_FIELD(unique);
WRITE_BOOL_FIELD(absent_on_null);
WRITE_BOOL_FIELD(unique);
WRITE_LOCATION_FIELD(location);
}
@@ -1817,7 +1817,8 @@ _outJsonIsPredicate(StringInfo str, const JsonIsPredicate *node)
WRITE_NODE_TYPE("JSONISPREDICATE");
WRITE_NODE_FIELD(expr);
WRITE_ENUM_FIELD(value_type, JsonValueType);
WRITE_NODE_FIELD(format);
WRITE_ENUM_FIELD(item_type, JsonValueType);
WRITE_BOOL_FIELD(unique_keys);
WRITE_LOCATION_FIELD(location);
}
@@ -1841,11 +1842,11 @@ _outJsonExpr(StringInfo str, const JsonExpr *node)
WRITE_NODE_FIELD(result_coercion);
WRITE_NODE_FIELD(format);
WRITE_NODE_FIELD(path_spec);
WRITE_NODE_FIELD(passing_values);
WRITE_NODE_FIELD(passing_names);
WRITE_NODE_FIELD(passing_values);
WRITE_NODE_FIELD(returning);
WRITE_NODE_FIELD(on_error);
WRITE_NODE_FIELD(on_empty);
WRITE_NODE_FIELD(on_error);
WRITE_NODE_FIELD(coercions);
WRITE_ENUM_FIELD(wrapper, JsonWrapper);
WRITE_BOOL_FIELD(omit_quotes);
@@ -1883,7 +1884,7 @@ _outJsonItemCoercions(StringInfo str, const JsonItemCoercions *node)
static void
_outJsonTableParent(StringInfo str, const JsonTableParent *node)
{
WRITE_NODE_TYPE("JSONTABPNODE");
WRITE_NODE_TYPE("JSONTABLEPARENT");
WRITE_NODE_FIELD(path);
WRITE_STRING_FIELD(name);
@@ -1891,12 +1892,13 @@ _outJsonTableParent(StringInfo str, const JsonTableParent *node)
WRITE_BOOL_FIELD(outerJoin);
WRITE_INT_FIELD(colMin);
WRITE_INT_FIELD(colMax);
WRITE_BOOL_FIELD(errorOnError);
}
static void
_outJsonTableSibling(StringInfo str, const JsonTableSibling *node)
{
WRITE_NODE_TYPE("JSONTABSNODE");
WRITE_NODE_TYPE("JSONTABLESIBLING");
WRITE_NODE_FIELD(larg);
WRITE_NODE_FIELD(rarg);