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
2025-07-29 08:21:15 +03:00 · 2022-06-23 10:49:29 +08:00
parent b5d8e0324b
commit cdd41f05f3
82 changed files with 8645 additions and 2 deletions
--- a/utils/funcexp/func_json_length.cpp
+++ b/utils/funcexp/func_json_length.cpp
@ -0,0 +1,81 @@
+#include "functor_json.h"
+#include "functioncolumn.h"
+#include "constantcolumn.h"
+using namespace execplan;
+
+#include "rowgroup.h"
+using namespace rowgroup;
+
+#include "dataconvert.h"
+using namespace dataconvert;
+
+#include "jsonhelpers.h"
+using namespace funcexp::helpers;
+
+namespace funcexp
+{
+CalpontSystemCatalog::ColType Func_json_length::operationType(FunctionParm& fp,
+                                                              CalpontSystemCatalog::ColType& resultType)
+{
+  return fp[0]->data()->resultType();
+}
+
+int64_t Func_json_length::getIntVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull,
+                                    execplan::CalpontSystemCatalog::ColType& op_ct)
+{
+  const string_view js = fp[0]->data()->getStrVal(row, isNull);
+  if (isNull)
+    return 0;
+
+  json_engine_t jsEg;
+  int length = 0;
+  int err;
+
+  initJSEngine(jsEg, getCharset(fp[0]), js);
+
+  if (fp.size() > 1)
+  {
+    if (!path.parsed && parseJSPath(path, row, fp[1], false))
+      goto error;
+
+    if (locateJSPath(jsEg, path))
+      goto error;
+  }
+
+  if (json_read_value(&jsEg))
+    goto error;
+
+  if (json_value_scalar(&jsEg))
+    return 1;
+
+  while (!(err = json_scan_next(&jsEg)) && jsEg.state != JST_OBJ_END && jsEg.state != JST_ARRAY_END)
+  {
+    switch (jsEg.state)
+    {
+      case JST_VALUE:
+      case JST_KEY: length++; break;
+      case JST_OBJ_START:
+      case JST_ARRAY_START:
+        if (json_skip_level(&jsEg))
+          goto error;
+        break;
+      default: break;
+    };
+  }
+
+  if (!err)
+  {
+    // Parse to the end of the JSON just to check it's valid.
+    while (json_scan_next(&jsEg) == 0)
+    {
+    }
+  }
+
+  if (likely(!jsEg.s.error))
+    return length;
+
+error:
+  isNull = true;
+  return 0;
+}
+}  // namespace funcexp