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1300.4.5
by Stewart Smith
convert UUID() to plugin. We move the libuuid requirement to the UUID() function plugin as it's not neeeded anywhere else |
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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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*
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* Copyright (C) 2008 Sun Microsystems
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* Copyright (C) 2010 Stewart Smith
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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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#include "config.h" |
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#include <drizzled/plugin/function.h> |
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#include <drizzled/item/func.h> |
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#include <drizzled/function/str/strfunc.h> |
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#include <uuid/uuid.h> |
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#define UUID_LENGTH (8+1+4+1+4+1+4+1+12)
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using namespace drizzled; |
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class UuidFunction: public Item_str_func |
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{
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public: |
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UuidFunction(): Item_str_func() {} |
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void fix_length_and_dec() { |
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collation.set(system_charset_info); |
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/*
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NOTE! uuid() should be changed to use 'ascii'
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charset when hex(), format(), md5(), etc, and implicit
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number-to-string conversion will use 'ascii'
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*/
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max_length= UUID_LENGTH * system_charset_info->mbmaxlen; |
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}
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const char *func_name() const{ return "uuid"; } |
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String *val_str(String *); |
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};
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String *UuidFunction::val_str(String *str) |
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{
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uuid_t uu; |
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char *uuid_string; |
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/* 36 characters for uuid string +1 for NULL */
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str->realloc(UUID_LENGTH+1); |
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str->length(UUID_LENGTH); |
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str->set_charset(system_charset_info); |
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uuid_string= (char *) str->ptr(); |
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1518.2.1
by Eric Day
Changed uuid algorithm to be random and not time based, was getting duplicates with time when used concurrently. |
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uuid_generate_random(uu); |
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1300.4.5
by Stewart Smith
convert UUID() to plugin. We move the libuuid requirement to the UUID() function plugin as it's not neeeded anywhere else |
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uuid_unparse(uu, uuid_string); |
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return str; |
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}
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plugin::Create_function<UuidFunction> *uuid_function= NULL; |
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1530.2.6
by Monty Taylor
Moved plugin::Context to module::Context. |
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static int initialize(drizzled::module::Context &context) |
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1300.4.5
by Stewart Smith
convert UUID() to plugin. We move the libuuid requirement to the UUID() function plugin as it's not neeeded anywhere else |
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{
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uuid_function= new plugin::Create_function<UuidFunction>("uuid"); |
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1324.2.2
by Monty Taylor
Use the plugin::Context everywhere. |
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context.add(uuid_function); |
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1300.4.5
by Stewart Smith
convert UUID() to plugin. We move the libuuid requirement to the UUID() function plugin as it's not neeeded anywhere else |
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return 0; |
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}
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DRIZZLE_DECLARE_PLUGIN
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{
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DRIZZLE_VERSION_ID, |
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"uuid", |
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"1.0", |
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"Stewart Smith", |
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"UUID() function using libuuid", |
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PLUGIN_LICENSE_GPL, |
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initialize, /* Plugin Init */ |
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NULL, /* system variables */ |
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NULL /* config options */ |
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}
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DRIZZLE_DECLARE_PLUGIN_END; |