MCOL-785 Implement DISTRIBUTED JSON functions

The following functions are created:
Create function JSON_VALID and test cases
Create function JSON_DEPTH and test cases
Create function JSON_LENGTH and test cases
Create function JSON_EQUALS and test cases
Create function JSON_NORMALIZE and test cases
Create function JSON_TYPE and test cases
Create function JSON_OBJECT and test cases
Create function JSON_ARRAY and test cases
Create function JSON_KEYS and test cases
Create function JSON_EXISTS and test cases
Create function JSON_QUOTE/JSON_UNQUOTE and test cases
Create function JSON_COMPACT/DETAILED/LOOSE and test cases
Create function JSON_MERGE and test cases
Create function JSON_MERGE_PATCH and test cases
Create function JSON_VALUE and test cases
Create function JSON_QUERY and test cases
Create function JSON_CONTAINS and test cases
Create function JSON_ARRAY_APPEND and test cases
Create function JSON_ARRAY_INSERT and test cases
Create function JSON_INSERT/REPLACE/SET and test cases
Create function JSON_REMOVE and test cases
Create function JSON_CONTAINS_PATH and test cases
Create function JSON_OVERLAPS and test cases
Create function JSON_EXTRACT and test cases
Create function JSON_SEARCH and test cases

Note:
Some functions output differs from MDB because session variables that affects functions output,e.g JSON_QUOTE/JSON_UNQUOTE
This depends on MCOL-5212

utils/funcexp/func_json_normalize.cpp

@@ -0,0 +1,47 @@
+#include <string_view>
+using namespace std;
+
+#include "functor_json.h"
+#include "functioncolumn.h"
+using namespace execplan;
+
+#include "rowgroup.h"
+using namespace rowgroup;
+
+#include "joblisttypes.h"
+using namespace joblist;
+
+#include "jsonhelpers.h"
+using namespace funcexp::helpers;
+
+namespace funcexp
+{
+CalpontSystemCatalog::ColType Func_json_normalize::operationType(FunctionParm& fp,
+                                                                 CalpontSystemCatalog::ColType& resultType)
+{
+  return fp[0]->data()->resultType();
+}
+
+string Func_json_normalize::getStrVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull,
+                                      execplan::CalpontSystemCatalog::ColType& type)
+{
+  const string_view js = fp[0]->data()->getStrVal(row, isNull);
+  if (isNull)
+    return "";
+
+  using DynamicString = unique_ptr<DYNAMIC_STRING, decltype(&dynstr_free)>;
+
+  DynamicString str{new DYNAMIC_STRING(), dynstr_free};
+  if (init_dynamic_string(str.get(), NULL, 0, 0))
+    goto error;
+
+  if (json_normalize(str.get(), js.data(), js.size(), getCharset(fp[0])))
+    goto error;
+
+  return str->str;
+
+error:
+  isNull = true;
+  return "";
+}
+}  // namespace funcexp