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Viewing changes to drizzled/plugin/table_function.cc

  • Committer: Brian Aker
  • Date: 2009-07-16 22:37:01 UTC
  • mto: This revision was merged to the branch mainline in revision 1100.
  • Revision ID: brian@gaz-20090716223701-vbbbo8dmgd2ljqqo
Refactor TableShare has to be behind class.

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drizzled/plugin/table_function.cc
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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) 2010 Monty Taylor
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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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20
 
#include "config.h"
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22
 
#include <drizzled/plugin/table_function.h>
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#include <drizzled/table_function_container.h>
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#include <drizzled/gettext.h>
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#include "drizzled/plugin/registry.h"
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#include "drizzled/global_charset_info.h"
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#include "drizzled/session.h"
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#include "drizzled/current_session.h"
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30
 
#include <vector>
31
 
 
32
 
using namespace std;
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34
 
namespace drizzled
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{
36
 
 
37
 
static TableFunctionContainer table_functions;
38
 
 
39
 
void plugin::TableFunction::init()
40
 
{
41
 
  drizzled::message::Table::StorageEngine *engine;
42
 
  drizzled::message::Table::TableOptions *table_options;
43
 
 
44
 
  proto.set_name(getTableLabel());
45
 
  proto.set_schema(identifier.getSchemaName());
46
 
  proto.set_type(drizzled::message::Table::FUNCTION);
47
 
  proto.set_creation_timestamp(0);
48
 
  proto.set_update_timestamp(0);
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50
 
  table_options= proto.mutable_options();
51
 
  table_options->set_collation_id(default_charset_info->number);
52
 
  table_options->set_collation(default_charset_info->name);
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54
 
  engine= proto.mutable_engine();
55
 
  engine->set_name("FunctionEngine");
56
 
}
57
 
 
58
 
bool plugin::TableFunction::addPlugin(plugin::TableFunction *tool)
59
 
{
60
 
  assert(tool != NULL);
61
 
  table_functions.addFunction(tool); 
62
 
  return false;
63
 
}
64
 
 
65
 
plugin::TableFunction *plugin::TableFunction::getFunction(const string &arg)
66
 
{
67
 
  return table_functions.getFunction(arg);
68
 
}
69
 
 
70
 
void plugin::TableFunction::getNames(const string &arg,
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                                     set<std::string> &set_of_names)
72
 
{
73
 
  table_functions.getNames(arg, set_of_names);
74
 
}
75
 
 
76
 
plugin::TableFunction::Generator *plugin::TableFunction::generator(Field **arg)
77
 
{
78
 
  return new Generator(arg);
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}
80
 
 
81
 
void plugin::TableFunction::add_field(const char *label,
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                                      uint32_t field_length)
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{
84
 
  add_field(label, TableFunction::STRING, field_length);
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}
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87
 
void plugin::TableFunction::add_field(const char *label,
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                              TableFunction::ColumnType type,
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                              bool is_default_null)
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{
91
 
  add_field(label, type, 5, is_default_null);
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}
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94
 
void plugin::TableFunction::add_field(const char *label,
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                              TableFunction::ColumnType type,
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                              uint32_t field_length,
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                              bool is_default_null)
98
 
{
99
 
  drizzled::message::Table::Field *field;
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  drizzled::message::Table::Field::FieldOptions *field_options;
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  drizzled::message::Table::Field::FieldConstraints *field_constraints;
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103
 
  field= proto.add_field();
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  field->set_name(label);
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  field_options= field->mutable_options();
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  field_constraints= field->mutable_constraints();
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  field_options->set_default_null(is_default_null);
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  field_constraints->set_is_nullable(is_default_null);
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  switch (type) 
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  {
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  default:
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  case TableFunction::BOOLEAN: // Currently BOOLEAN always has a value
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    field_length= 5;
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    field_options->set_default_null(false);
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    field_constraints->set_is_nullable(false);
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  case TableFunction::STRING:
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  {
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    drizzled::message::Table::Field::StringFieldOptions *string_field_options;
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    field->set_type(drizzled::message::Table::Field::VARCHAR);
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123
 
    string_field_options= field->mutable_string_options();
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    string_field_options->set_length(field_length);
125
 
  }
126
 
    break;
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  case TableFunction::VARBINARY:
128
 
  {
129
 
    drizzled::message::Table::Field::StringFieldOptions *string_field_options;
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    field->set_type(drizzled::message::Table::Field::VARCHAR);
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132
 
    string_field_options= field->mutable_string_options();
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    string_field_options->set_length(field_length);
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    string_field_options->set_collation(my_charset_bin.csname);
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    string_field_options->set_collation_id(my_charset_bin.number);
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  }
137
 
    break;
138
 
  case TableFunction::NUMBER: // Currently NUMBER always has a value
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    field->set_type(drizzled::message::Table::Field::BIGINT);
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    field_options->set_default_null(false);
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    field_constraints->set_is_nullable(false);
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    break;
143
 
  }
144
 
}
145
 
 
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plugin::TableFunction::Generator::Generator(Field **arg) :
147
 
  columns(arg),
148
 
  session(current_session)
149
 
{
150
 
  scs= system_charset_info;
151
 
}
152
 
 
153
 
bool plugin::TableFunction::Generator::sub_populate(uint32_t field_size)
154
 
{
155
 
  bool ret;
156
 
  uint64_t difference;
157
 
 
158
 
  columns_iterator= columns;
159
 
  ret= populate();
160
 
  difference= columns_iterator - columns;
161
 
 
162
 
  if (ret == true)
163
 
  {
164
 
    assert(difference == field_size);
165
 
  }
166
 
 
167
 
  return ret;
168
 
}
169
 
 
170
 
void plugin::TableFunction::Generator::push(uint64_t arg)
171
 
{
172
 
  (*columns_iterator)->store(static_cast<int64_t>(arg), true);
173
 
  (*columns_iterator)->set_notnull();
174
 
  columns_iterator++;
175
 
}
176
 
 
177
 
void plugin::TableFunction::Generator::push(int64_t arg)
178
 
{
179
 
  (*columns_iterator)->store(arg, false);
180
 
  (*columns_iterator)->set_notnull();
181
 
  columns_iterator++;
182
 
}
183
 
 
184
 
void plugin::TableFunction::Generator::push(const char *arg, uint32_t length)
185
 
{
186
 
  assert(columns_iterator);
187
 
  assert(*columns_iterator);
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  assert(arg);
189
 
  length= length ? length : strlen(arg);
190
 
 
191
 
  (*columns_iterator)->store(arg, length, scs);
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  (*columns_iterator)->set_notnull();
193
 
  columns_iterator++;
194
 
}
195
 
 
196
 
void plugin::TableFunction::Generator::push()
197
 
{
198
 
  assert((*columns_iterator)->type()  == DRIZZLE_TYPE_VARCHAR);
199
 
  (*columns_iterator)->set_null();
200
 
  columns_iterator++;
201
 
}
202
 
 
203
 
void plugin::TableFunction::Generator::push(const std::string& arg)
204
 
{
205
 
  push(arg.c_str(), arg.length());
206
 
}
207
 
 
208
 
void plugin::TableFunction::Generator::push(bool arg)
209
 
{
210
 
  if (arg)
211
 
  {
212
 
    (*columns_iterator)->store("TRUE", 4, scs);
213
 
  }
214
 
  else
215
 
  {
216
 
    (*columns_iterator)->store("FALSE", 5, scs);
217
 
  }
218
 
 
219
 
  columns_iterator++;
220
 
}
221
 
 
222
 
bool plugin::TableFunction::Generator::isWild(const std::string &predicate)
223
 
{
224
 
  if (not getSession().lex->wild)
225
 
    return false;
226
 
 
227
 
  bool match= wild_case_compare(system_charset_info,
228
 
                                predicate.c_str(),
229
 
                                getSession().lex->wild->ptr());
230
 
 
231
 
  return match;
232
 
}
233
 
 
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} /* namespace drizzled */