projjal commented on a change in pull request #9873:
URL: https://github.com/apache/arrow/pull/9873#discussion_r609459002
##########
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 time (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_time_date64
+#define TO_TIME_SAFE_NULL_IF_NULL(NAME, ALIASES, TYPE)
\
Review comment:
better to move this macro to registry_datetime.cc
##########
File path: cpp/src/gandiva/precompiled/time.cc
##########
@@ -817,4 +817,19 @@ gdv_int64 castBIGINT_daytimeinterval(gdv_day_time_interval
in) {
extractDay_daytimeinterval(in) * MILLIS_IN_DAY;
}
+// Convert milliseconds to date, considering as input the quantity of
milliseconds
+// after midnight
Review comment:
quantity of millis since midnight is defined to be time. I think you are
supposed to convert millis since epoch to time.
You can also add another function to_date which would return the
corresponding date
##########
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 time (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_time_date64
+#define TO_TIME_SAFE_NULL_IF_NULL(NAME, ALIASES, TYPE)
\
+ NativeFunction(#NAME, std::vector<std::string> ALIASES,
DataTypeVector{TYPE()}, \
+ date64(), kResultNullIfNull, ARROW_STRINGIFY(NAME##_##TYPE))
Review comment:
output should be time instead of date
##########
File path: cpp/src/gandiva/precompiled/time.cc
##########
@@ -817,4 +817,19 @@ gdv_int64 castBIGINT_daytimeinterval(gdv_day_time_interval
in) {
extractDay_daytimeinterval(in) * MILLIS_IN_DAY;
}
+// Convert milliseconds to date, considering as input the quantity of
milliseconds
+// after midnight
+#define TO_TIME(TYPE)
\
+ FORCE_INLINE
\
+ gdv_date64 to_time##_##TYPE(gdv_##TYPE millis) {
\
+ EpochTimePoint actual_tp(EpochTimePoint::NowMillisEpoch());
\
Review comment:
why is current time need to be used? The argument is already provided
##########
File path: cpp/src/gandiva/precompiled/time.cc
##########
@@ -817,4 +817,19 @@ gdv_int64 castBIGINT_daytimeinterval(gdv_day_time_interval
in) {
extractDay_daytimeinterval(in) * MILLIS_IN_DAY;
}
+// Convert milliseconds to date, considering as input the quantity of
milliseconds
+// after midnight
+#define TO_TIME(TYPE)
\
+ FORCE_INLINE
\
+ gdv_date64 to_time##_##TYPE(gdv_##TYPE millis) {
\
Review comment:
output is not date but time
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