Removing duplicate code: Adding a protected method

Field_temporal_with_date::validate_for_get_date()
and reusing it in a few places.

sql/field.cc

@@ -5985,11 +5985,7 @@ bool Field_newdate::get_date(MYSQL_TIME *ltime,ulonglong fuzzydate)
   ltime->year=  (tmp >> 9);
   ltime->time_type= MYSQL_TIMESTAMP_DATE;
   ltime->hour= ltime->minute= ltime->second= ltime->second_part= ltime->neg= 0;
-  if (!tmp)
-    return fuzzydate & TIME_NO_ZERO_DATE;
-  if (!ltime->month || !ltime->day)
-    return fuzzydate & TIME_NO_ZERO_IN_DATE;
-  return 0;
+  return validate_for_get_date(tmp, ltime, fuzzydate);
 }
 
 
@@ -6113,11 +6109,7 @@ bool Field_datetime::get_date(MYSQL_TIME *ltime, ulonglong fuzzydate)
   ltime->day=		(int) (part1%100);
   ltime->month= 	(int) (part1/100%100);
   ltime->year= 		(int) (part1/10000);
-  if (!tmp)
-    return fuzzydate & TIME_NO_ZERO_DATE;
-  if (!ltime->month || !ltime->day)
-    return fuzzydate & TIME_NO_ZERO_IN_DATE;
-  return 0;
+  return validate_for_get_date(tmp, ltime, fuzzydate);
 }
 
 int Field_datetime::cmp(const uchar *a_ptr, const uchar *b_ptr)
@@ -6235,11 +6227,7 @@ bool Field_datetime_hires::get_date(MYSQL_TIME *ltime, ulonglong fuzzydate)
 {
   ulonglong packed= read_bigendian(ptr, Field_datetime_hires::pack_length());
   unpack_time(sec_part_unshift(packed, dec), ltime);
-  if (!packed)
-    return fuzzydate & TIME_NO_ZERO_DATE;
-  if (!ltime->month || !ltime->day)
-    return fuzzydate & TIME_NO_ZERO_IN_DATE;
-  return 0;
+  return validate_for_get_date(packed, ltime, fuzzydate);
 }
 
 uint32 Field_datetime_hires::pack_length() const
@@ -6282,11 +6270,7 @@ bool Field_datetimef::get_date(MYSQL_TIME *ltime, ulonglong fuzzydate)
 {
   longlong tmp= my_datetime_packed_from_binary(ptr, dec);
   TIME_from_longlong_datetime_packed(ltime, tmp);
-  if (!tmp)
-    return fuzzydate & TIME_NO_ZERO_DATE;
-  if (!ltime->month || !ltime->day)
-    return fuzzydate & TIME_NO_ZERO_IN_DATE;
-  return false;
+  return validate_for_get_date(tmp, ltime, fuzzydate);
 }
 
 

sql/field.h

@@ -1681,6 +1681,15 @@ class Field_temporal_with_date: public Field_temporal {
   int store_TIME_with_warning(MYSQL_TIME *ltime, const ErrConv *str,
                               int was_cut, int have_smth_to_conv);
   virtual void store_TIME(MYSQL_TIME *ltime) = 0;
+  bool validate_for_get_date(bool not_zero_date, const MYSQL_TIME *ltime,
+                             ulonglong fuzzydate)
+  {
+    if (!not_zero_date)
+      return fuzzydate & TIME_NO_ZERO_DATE;
+    if (!ltime->month || !ltime->day)
+      return fuzzydate & TIME_NO_ZERO_IN_DATE;
+    return false;
+  }
 public:
   Field_temporal_with_date(uchar *ptr_arg, uint32 len_arg,
                            uchar *null_ptr_arg, uchar null_bit_arg,