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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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* Copyright (C) 2008 MySQL
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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; either version 2 of the License, or
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* (at your option) any later version.
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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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* 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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#ifndef DRIZZLE_SERVER_FIELD_STRING
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#define DRIZZLE_SERVER_FIELD_STRING
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#include "mysql_priv.h"
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class Field_string :public Field_longstr {
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bool can_alter_field_type;
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Field_string(uchar *ptr_arg, uint32 len_arg,uchar *null_ptr_arg,
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enum utype unireg_check_arg, const char *field_name_arg,
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:Field_longstr(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
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unireg_check_arg, field_name_arg, cs),
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can_alter_field_type(1) {};
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Field_string(uint32 len_arg,bool maybe_null_arg, const char *field_name_arg,
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:Field_longstr((uchar*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0, 0,
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NONE, field_name_arg, cs),
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can_alter_field_type(1) {};
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enum_field_types type() const
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return MYSQL_TYPE_STRING;
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enum ha_base_keytype key_type() const
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{ return binary() ? HA_KEYTYPE_BINARY : HA_KEYTYPE_TEXT; }
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bool zero_pack() const { return 0; }
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charset()->cset->fill(charset(),(char*) ptr, field_length,
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(has_charset() ? ' ' : 0));
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int store(const char *to,uint length,CHARSET_INFO *charset);
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int store(int64_t nr, bool unsigned_val);
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int store(double nr) { return Field_str::store(nr); } /* QQ: To be deleted */
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double val_real(void);
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int64_t val_int(void);
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String *val_str(String*,String *);
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my_decimal *val_decimal(my_decimal *);
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int cmp(const uchar *,const uchar *);
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void sort_string(uchar *buff,uint length);
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void sql_type(String &str) const;
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virtual uchar *pack(uchar *to, const uchar *from,
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uint max_length, bool low_byte_first);
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virtual const uchar *unpack(uchar* to, const uchar *from,
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uint param_data, bool low_byte_first);
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uint pack_length_from_metadata(uint field_metadata)
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{ return (field_metadata & 0x00ff); }
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uint row_pack_length() { return (field_length + 1); }
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int pack_cmp(const uchar *a,const uchar *b,uint key_length,
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my_bool insert_or_update);
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int pack_cmp(const uchar *b,uint key_length,my_bool insert_or_update);
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uint packed_col_length(const uchar *to, uint length);
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uint max_packed_col_length(uint max_length);
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uint size_of() const { return sizeof(*this); }
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enum_field_types real_type() const { return MYSQL_TYPE_STRING; }
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bool has_charset(void) const
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{ return charset() == &my_charset_bin ? false : true; }
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Field *new_field(MEM_ROOT *root, struct st_table *new_table, bool keep_type);
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virtual uint get_key_image(uchar *buff,uint length, imagetype type);
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int do_save_field_metadata(uchar *first_byte);
added
removed
server/field/string.h
