snuyanzin commented on code in PR #28688:
URL: https://github.com/apache/flink/pull/28688#discussion_r3580780049
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flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/SqlJsonUtils.java:
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@@ -374,6 +375,77 @@ private static Object errorResultForJsonQuery(
}
}
+ /** Accepts a pre-parsed context from {@link #jsonParse}. */
+ public static Integer jsonLength(final JsonValueContext parsedInput) {
+ if (parsedInput.hasException()) {
+ return null;
+ }
+ // Whole document: a top-level JSON null literal counts as a scalar
(length 1).
+ return jsonLengthValue(parsedInput.obj);
+ }
+
+ /** Accepts a pre-parsed context from {@link #jsonParse}. */
+ public static Integer jsonLength(final JsonValueContext parsedInput,final
String pathSpec) {
+ if (parsedInput.hasException()) {
+ // invalid input JSON
+ return null;
+ }
+ final JsonPathContext context = jsonApiCommonSyntax(parsedInput,
pathSpec);
+ final Object value = context.hasException() ? null : context.obj;
+
+ if (value instanceof LinkedList) {
Review Comment:
the comment marked as resolved however no answer yet
can you elaborate here?
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