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Viewing changes to drizzled/function/time/from_unixtime.cc

  • Committer: Lee Bieber
  • Date: 2011-03-29 22:31:41 UTC
  • mfrom: (2257.1.3 build)
  • Revision ID: kalebral@gmail.com-20110329223141-yxc22h3l2he58sk0
Merge Andrew - 743842: Build failure using GCC 4.6
Merge Stewart - 738022: CachedDirectory silently fails to add entries if stat() fails
Merge Olaf - Common fwd: add copyright, add more declaration

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drizzled/function/time/from_unixtime.cc
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#include "config.h"
 
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#include <config.h>
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#include <boost/lexical_cast.hpp>
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#include "drizzled/function/time/from_unixtime.h"
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#include "drizzled/session.h"
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#include "drizzled/temporal.h"
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#include "drizzled/time_functions.h"
 
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#include <drizzled/function/time/from_unixtime.h>
 
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#include <drizzled/current_session.h>
 
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#include <drizzled/session.h>
 
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#include <drizzled/temporal.h>
 
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#include <drizzled/time_functions.h>
 
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#include <drizzled/field.h>
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#include <sstream>
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#include <string>
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  session= current_session;
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  collation.set(&my_charset_bin);
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  decimals= DATETIME_DEC;
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  max_length=DateTime::MAX_STRING_LENGTH*MY_CHARSET_BIN_MB_MAXLEN;
 
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  max_length=type::Time::MAX_STRING_LENGTH*MY_CHARSET_BIN_MB_MAXLEN;
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  maybe_null= 1;
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}
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String *Item_func_from_unixtime::val_str(String *str)
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{
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  DRIZZLE_TIME time_tmp;
 
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  type::Time time_tmp;
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  assert(fixed == 1);
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  if (get_date(&time_tmp, 0))
 
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  if (get_date(time_tmp, 0))
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    return 0;
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  if (str->alloc(MAX_DATE_STRING_REP_LENGTH))
 
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  if (str->alloc(type::Time::MAX_STRING_LENGTH))
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  {
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    null_value= 1;
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    return 0;
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  }
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  make_datetime(&time_tmp, str);
 
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  time_tmp.convert(*str);
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  return str;
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}
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int64_t Item_func_from_unixtime::val_int()
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{
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  DRIZZLE_TIME time_tmp;
 
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  type::Time time_tmp;
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  assert(fixed == 1);
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  if (get_date(&time_tmp, 0))
 
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  if (get_date(time_tmp, 0))
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    return 0;
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  return (int64_t) TIME_to_uint64_t_datetime(&time_tmp);
 
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  int64_t ret;
 
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  time_tmp.convert(ret);
 
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  return (int64_t) ret;
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}
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bool Item_func_from_unixtime::get_date(DRIZZLE_TIME *ltime, uint32_t)
 
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bool Item_func_from_unixtime::get_date(type::Time &ltime, uint32_t)
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{
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  uint64_t tmp= (uint64_t)(args[0]->val_int());
 
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  uint64_t tmp= 0;
 
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  type::Time::usec_t fractional_tmp= 0;
 
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  switch (args[0]->result_type()) {
 
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  case REAL_RESULT:
 
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  case ROW_RESULT:
 
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  case DECIMAL_RESULT:
 
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  case STRING_RESULT:
 
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    {
 
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      double double_tmp= args[0]->val_real();
 
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      tmp= (uint64_t)(double_tmp);
 
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      fractional_tmp=  (type::Time::usec_t)((uint64_t)((double_tmp - tmp) * type::Time::FRACTIONAL_DIGITS) % type::Time::FRACTIONAL_DIGITS);
 
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      break;
 
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    }
 
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  case INT_RESULT:
 
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    tmp= (uint64_t)(args[0]->val_int());
 
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    break;
 
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  }
 
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  /*
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    "tmp > TIMESTAMP_MAX_VALUE" check also covers case of negative
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    from_unixtime() argument since tmp is unsigned.
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  if ((null_value= (args[0]->null_value || tmp > TIMESTAMP_MAX_VALUE)))
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    return 1;
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  Timestamp temporal;
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  if (! temporal.from_time_t((time_t) tmp))
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  {
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    null_value= true;
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    std::string tmp_string(boost::lexical_cast<std::string>(tmp));
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    my_error(ER_INVALID_UNIX_TIMESTAMP_VALUE, MYF(0), tmp_string.c_str());
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    return 0;
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  }
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  memset(ltime, 0, sizeof(*ltime));
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  ltime->year= temporal.years();
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  ltime->month= temporal.months();
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  ltime->day= temporal.days();
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  ltime->hour= temporal.hours();
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  ltime->minute= temporal.minutes();
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  ltime->second= temporal.seconds();
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  ltime->time_type= DRIZZLE_TIMESTAMP_DATETIME;
 
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  ltime.reset();
 
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  ltime.store(tmp, fractional_tmp);
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  return 0;
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}