~drizzle-trunk/drizzle/development

574.3.14 by Lee
moving functions from item_timefunc to functions/time directory
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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 *
1999.6.1 by kalebral at gmail
update Copyright strings to a more common format to help with creating the master debian copyright file
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 *  Copyright (C) 2008 Sun Microsystems, Inc.
574.3.14 by Lee
moving functions from item_timefunc to functions/time directory
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation; version 2 of the License.
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 *
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 *  This program is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program; if not, write to the Free Software
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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2173.2.1 by Monty Taylor
Fixes incorrect usage of include
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#include <config.h>
1280.1.10 by Monty Taylor
Put everything in drizzled into drizzled namespace.
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2173.2.1 by Monty Taylor
Fixes incorrect usage of include
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#include <drizzled/temporal.h>
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#include <drizzled/error.h>
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#include <drizzled/function/time/quarter.h>
574.3.14 by Lee
moving functions from item_timefunc to functions/time directory
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1280.1.10 by Monty Taylor
Put everything in drizzled into drizzled namespace.
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namespace drizzled
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{
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574.3.14 by Lee
moving functions from item_timefunc to functions/time directory
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int64_t Item_func_quarter::val_int()
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{
813.1.20 by Jay Pipes
Fixes for the QUARTER() function to use new Temporal system and throw
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  assert(fixed);
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  if (args[0]->is_null())
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  {
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    /* For NULL argument, we return a NULL result */
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    null_value= true;
574.3.14 by Lee
moving functions from item_timefunc to functions/time directory
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    return 0;
813.1.20 by Jay Pipes
Fixes for the QUARTER() function to use new Temporal system and throw
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  }
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  /* Grab the first argument as a DateTime object */
1280.1.10 by Monty Taylor
Put everything in drizzled into drizzled namespace.
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  DateTime temporal;
813.1.20 by Jay Pipes
Fixes for the QUARTER() function to use new Temporal system and throw
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  Item_result arg0_result_type= args[0]->result_type();
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  switch (arg0_result_type)
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  {
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    case DECIMAL_RESULT: 
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      /* 
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       * For doubles supplied, interpret the arg as a string, 
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       * so intentionally fall-through here...
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       * This allows us to accept double parameters like 
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       * 19971231235959.01 and interpret it the way MySQL does:
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       * as a TIMESTAMP-like thing with a microsecond component.
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       * Ugh, but need to keep backwards-compat.
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       */
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    case STRING_RESULT:
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      {
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        char buff[DRIZZLE_MAX_LENGTH_DATETIME_AS_STRING];
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        String tmp(buff,sizeof(buff), &my_charset_utf8_bin);
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        String *res= args[0]->val_str(&tmp);
1750.3.1 by David Shrewsbury
Use of String::c_ptr() in temporal functions can corrupt PBXT row cache, so make sure temporaries are used.
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        if (res && (res != &tmp))
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        {
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          tmp.copy(*res);
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        }
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        if (! temporal.from_string(tmp.c_ptr(), tmp.length()))
813.1.20 by Jay Pipes
Fixes for the QUARTER() function to use new Temporal system and throw
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        {
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          /* 
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          * Could not interpret the function argument as a temporal value, 
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          * so throw an error and return 0
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          */
1750.3.1 by David Shrewsbury
Use of String::c_ptr() in temporal functions can corrupt PBXT row cache, so make sure temporaries are used.
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          my_error(ER_INVALID_DATETIME_VALUE, MYF(0), tmp.c_ptr());
813.1.20 by Jay Pipes
Fixes for the QUARTER() function to use new Temporal system and throw
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          return 0;
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        }
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      }
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      break;
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    case INT_RESULT:
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      if (temporal.from_int64_t(args[0]->val_int()))
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        break;
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      /* Intentionally fall-through on invalid conversion from integer */
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    default:
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      {
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        /* 
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        * Could not interpret the function argument as a temporal value, 
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        * so throw an error and return 0
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        */
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        null_value= true;
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        char buff[DRIZZLE_MAX_LENGTH_DATETIME_AS_STRING];
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        String tmp(buff,sizeof(buff), &my_charset_utf8_bin);
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        String *res;
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        res= args[0]->val_str(&tmp);
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1750.3.1 by David Shrewsbury
Use of String::c_ptr() in temporal functions can corrupt PBXT row cache, so make sure temporaries are used.
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        if (res && (res != &tmp))
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        {
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          tmp.copy(*res);
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        }
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        my_error(ER_INVALID_DATETIME_VALUE, MYF(0), tmp.c_ptr());
813.1.20 by Jay Pipes
Fixes for the QUARTER() function to use new Temporal system and throw
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        return 0;
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      }
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  }
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  return (int64_t) ((temporal.months() + 2) / 3);
574.3.14 by Lee
moving functions from item_timefunc to functions/time directory
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}
1280.1.10 by Monty Taylor
Put everything in drizzled into drizzled namespace.
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} /* namespace drizzled */