Drizzled Public API Documentation

unix_timestamp.cc
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19 
20 #include <config.h>
21 
22 #include <drizzled/function/time/unix_timestamp.h>
23 #include <drizzled/field/epoch.h>
24 #include <drizzled/session.h>
25 #include <drizzled/session/times.h>
26 #include <drizzled/temporal.h>
27 #include <drizzled/item/field.h>
28 
29 namespace drizzled {
30 
32 {
33  type::Time ltime;
34 
35  assert(fixed == 1);
36  if (arg_count == 0)
37  return (int64_t) getSession().times.getCurrentTimestampEpoch();
38 
39  if (args[0]->type() == FIELD_ITEM)
40  { // Optimize timestamp field
41  Field *field=((Item_field*) args[0])->field;
42  if (field->is_timestamp())
43  return ((field::Epoch::pointer) field)->get_timestamp(&null_value);
44  }
45 
46  if (get_arg0_date(ltime, 0))
47  {
48  /*
49  We have to set null_value again because get_arg0_date will also set it
50  to true if we have wrong datetime parameter (and we should return 0 in
51  this case).
52  */
53  null_value= args[0]->null_value;
54  return 0;
55  }
56 
57  Timestamp temporal;
58 
59  temporal.set_years(ltime.year);
60  temporal.set_months(ltime.month);
61  temporal.set_days(ltime.day);
62  temporal.set_hours(ltime.hour);
63  temporal.set_minutes(ltime.minute);
64  temporal.set_seconds(ltime.second);
65  temporal.set_epoch_seconds();
66 
67  if (! temporal.is_valid())
68  {
69  null_value= true;
70  char buff[DateTime::MAX_STRING_LENGTH];
71  int buff_len;
72  buff_len= temporal.to_string(buff, DateTime::MAX_STRING_LENGTH);
73  assert((buff_len+1) < DateTime::MAX_STRING_LENGTH);
74  my_error(ER_INVALID_UNIX_TIMESTAMP_VALUE, MYF(0), buff);
75  return 0;
76  }
77 
78  time_t tmp;
79  temporal.to_time_t(tmp);
80 
81  return (int64_t) tmp;
82 }
83 
84 } /* namespace drizzled */
virtual int to_string(char *to, size_t to_len) const
Definition: temporal.cc:999
void set_hours(const uint32_t hour)
Definition: temporal.h:136
bool fixed
Definition: item.h:120
void set_years(const uint32_t year)
Definition: temporal.h:148
bool null_value
Definition: item.h:122
void set_minutes(const uint32_t minute)
Definition: temporal.h:132
void set_days(const uint32_t day)
Definition: temporal.h:140
static const int MAX_STRING_LENGTH
Definition: temporal.h:608
void set_seconds(const uint32_t second)
Definition: temporal.h:128
void to_time_t(time_t &to) const
Definition: temporal.cc:1336
void set_months(const uint32_t month)
Definition: temporal.h:144
virtual bool is_valid() const
Definition: temporal.cc:1393
void set_epoch_seconds()
Definition: temporal.cc:123