projjal commented on a change in pull request #9890:
URL: https://github.com/apache/arrow/pull/9890#discussion_r609323671
##########
File path: cpp/src/gandiva/function_registry_datetime.cc
##########
@@ -83,7 +83,9 @@ std::vector<NativeFunction> GetDateTimeFunctionRegistry() {
NativeFunction("extractDay", {}, DataTypeVector{day_time_interval()},
int64(),
kResultNullIfNull, "extractDay_daytimeinterval"),
- DATE_TYPES(LAST_DAY_SAFE_NULL_IF_NULL, last_day, {})};
+ DATE_TYPES(LAST_DAY_SAFE_NULL_IF_NULL, last_day, {}),
+
+ DATE_TYPES(TO_TIMESTAMP_SAFE_NULL_IF_NULL, to_timestamp, {})};
Review comment:
If the function converts number of seconds to timestamp, than the
argument should be int32/int64/float/double. Date/timestamp as arguments would
be incorrect as they are already in millis.
##########
File path: cpp/src/gandiva/function_registry_common.h
##########
@@ -174,6 +174,15 @@ typedef std::unordered_map<const FunctionSignature*, const
NativeFunction*, KeyH
NativeFunction(#NAME, std::vector<std::string> ALIASES,
DataTypeVector{TYPE()}, \
date64(), kResultNullIfNull,
ARROW_STRINGIFY(NAME##_from_##TYPE))
+// To timestamp functions (used with data/time types) that :
+// - NULL handling is of type NULL_IF_NULL
+//
+// The pre-compiled fn name includes the base name & input type name. eg:
+// - to_timestamp_date64
+#define TO_TIMESTAMP_SAFE_NULL_IF_NULL(NAME, ALIASES, TYPE)
\
Review comment:
better to keep these macros in function_registry_datetime.cc. This file
is for generic macros.
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