lvyanquan commented on code in PR #4227:
URL: https://github.com/apache/flink-cdc/pull/4227#discussion_r2703024015
##########
flink-cdc-runtime/src/main/java/org/apache/flink/cdc/runtime/functions/SystemFunctionUtils.java:
##########
@@ -1096,4 +1098,37 @@ public static boolean lessThanOrEqual(Object lhs, Object
rhs) {
}
return universalCompares(lhs, rhs) <= 0;
}
+
+ public static Variant tryParseJson(String jsonStr) {
+ return tryParseJson(jsonStr, false);
+ }
+
+ public static Variant tryParseJson(String jsonStr, boolean
allowDuplicateKeys) {
+ if (jsonStr == null || jsonStr.isEmpty()) {
+ return null;
+ }
+
+ try {
+ return BinaryVariantInternalBuilder.parseJson(jsonStr,
allowDuplicateKeys);
+ } catch (Throwable e) {
+ return null;
+ }
+ }
+
+ public static Variant parseJson(String jsonStr) {
+ return parseJson(jsonStr, false);
+ }
+
+ public static Variant parseJson(String jsonStr, boolean
allowDuplicateKeys) {
+ if (jsonStr == null || jsonStr.isEmpty()) {
+ return null;
Review Comment:
Return null to be consistent with FlinkSQL, refer to:
https://github.com/apache/flink/blob/61f9ffece974134c8d7da8f87e3092b54af9a700/flink-table/flink-table-runtime/src/main/java/org/apache/flink/table/runtime/functions/scalar/ParseJsonFunction.java#L42
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