Drizzled Public API Documentation

microtime.h

00001 /* - mode: c++ c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2008 MySQL
00005  *
00006  *  This program is free software; you can redistribute it and/or modify
00007  *  it under the terms of the GNU General Public License as published by
00008  *  the Free Software Foundation; either version 2 of the License, or
00009  *  (at your option) any later version.
00010  *
00011  *  This program is distributed in the hope that it will be useful,
00012  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  *  GNU General Public License for more details.
00015  *
00016  *  You should have received a copy of the GNU General Public License
00017  *  along with this program; if not, write to the Free Software
00018  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00019  */
00020 
00021 #pragma once
00022 
00023 #include <drizzled/field/epoch.h>
00024 
00025 namespace drizzled
00026 {
00027 
00028 namespace field
00029 {
00030 
00031 class TableShare;
00032 typedef struct charset_info_st CHARSET_INFO;
00033 
00034 class Microtime :public Epoch {
00035 public:
00036 
00037   typedef Microtime* pointer;
00038 
00039   Microtime(unsigned char *ptr_arg,
00040             unsigned char *null_ptr_arg,
00041             unsigned char null_bit_arg,
00042             enum utype unireg_check_arg,
00043             const char *field_name_arg,
00044             drizzled::TableShare *share);
00045 
00046   Microtime(bool maybe_null_arg,
00047             const char *field_name_arg);
00048 
00049   enum_field_types type() const { return DRIZZLE_TYPE_MICROTIME;}
00050   enum ha_base_keytype key_type() const { return HA_KEYTYPE_BINARY; }
00051   enum Item_result cmp_type () const { return STRING_RESULT; }
00052   int store(const char *to,uint32_t length,
00053             const CHARSET_INFO * const charset);
00054   int store(double nr);
00055   int store(int64_t nr, bool unsigned_val);
00056   int store_time(type::Time &ltime, type::timestamp_t t_type);
00057 
00058   String *val_str(String*,String *) const;
00059   double val_real(void) const;
00060   int64_t val_int(void) const;
00061   type::Decimal *val_decimal(type::Decimal *decimal_value) const;
00062 
00063   int cmp(const unsigned char *,const unsigned char *);
00064   void sort_string(unsigned char *buff,uint32_t length);
00065   uint32_t pack_length() const { return 12; }
00066   void sql_type(String &str) const;
00067   bool can_be_compared_as_int64_t() const { return false; }
00068   bool zero_pack() const { return 0; }
00069   void set_time();
00070 
00071   /* Get TIMESTAMP field value as seconds since begging of Unix Microtime */
00072   long get_timestamp(bool *null_value) const;
00073 
00074 private:
00075   bool get_date(type::Time &ltime,uint32_t fuzzydate) const;
00076   bool get_time(type::Time &ltime) const;
00077 
00078 public:
00079   static size_t max_string_length()
00080   {
00081     return 12;
00082   }
00083 };
00084 
00085 } /* namespace field */
00086 } /* namespace drizzled */
00087 
00088