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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Monty Taylor
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <drizzled/current_session.h>
#include <drizzled/gettext.h>
#include <drizzled/global_charset_info.h>
#include <drizzled/plugin/table_function.h>
#include <drizzled/session.h>
#include <drizzled/show.h>
#include <drizzled/table_function_container.h>
#include <drizzled/sql_lex.h>
#include <vector>
namespace drizzled {
static TableFunctionContainer table_functions;
void plugin::TableFunction::init()
{
drizzled::message::table::init(proto, getTableLabel(), identifier.getSchemaName(), "FunctionEngine");
proto.set_type(drizzled::message::Table::FUNCTION);
proto.set_creation_timestamp(0);
proto.set_update_timestamp(0);
message::set_is_replicated(proto, false);
}
bool plugin::TableFunction::addPlugin(plugin::TableFunction *tool)
{
assert(tool != NULL);
table_functions.addFunction(tool);
return false;
}
plugin::TableFunction *plugin::TableFunction::getFunction(const std::string &arg)
{
return table_functions.getFunction(arg);
}
void plugin::TableFunction::getNames(const std::string &arg,
std::set<std::string> &set_of_names)
{
table_functions.getNames(arg, set_of_names);
}
LEX& plugin::TableFunction::Generator::lex()
{
return getSession().lex();
}
statement::Statement& plugin::TableFunction::Generator::statement()
{
return *lex().statement;
}
plugin::TableFunction::Generator *plugin::TableFunction::generator(Field **arg)
{
return new Generator(arg);
}
void plugin::TableFunction::add_field(const char *label,
uint32_t field_length)
{
add_field(label, TableFunction::STRING, field_length);
}
void plugin::TableFunction::add_field(const char *label,
TableFunction::ColumnType type,
bool is_default_null)
{
add_field(label, type, 5, is_default_null);
}
void plugin::TableFunction::add_field(const char *label,
TableFunction::ColumnType type,
uint32_t field_length,
bool is_default_null)
{
drizzled::message::Table::Field *field;
drizzled::message::Table::Field::FieldOptions *field_options;
drizzled::message::Table::Field::FieldConstraints *field_constraints;
field= proto.add_field();
field->set_name(label);
field_options= field->mutable_options();
field_constraints= field->mutable_constraints();
field_options->set_default_null(is_default_null);
field_constraints->set_is_notnull(not is_default_null);
switch (type)
{
case TableFunction::STRING:
{
drizzled::message::Table::Field::StringFieldOptions *string_field_options;
if (field_length >= TABLE_FUNCTION_BLOB_SIZE)
{
field->set_type(drizzled::message::Table::Field::BLOB);
string_field_options= field->mutable_string_options();
string_field_options->set_collation_id(default_charset_info->number);
string_field_options->set_collation(default_charset_info->name);
}
else
{
field->set_type(drizzled::message::Table::Field::VARCHAR);
string_field_options= field->mutable_string_options();
string_field_options->set_length(field_length);
}
}
break;
case TableFunction::VARBINARY:
{
drizzled::message::Table::Field::StringFieldOptions *string_field_options;
field->set_type(drizzled::message::Table::Field::VARCHAR);
string_field_options= field->mutable_string_options();
string_field_options->set_length(field_length);
string_field_options->set_collation(my_charset_bin.csname);
string_field_options->set_collation_id(my_charset_bin.number);
}
break;
case TableFunction::NUMBER:
field->set_type(drizzled::message::Table::Field::BIGINT);
break;
case TableFunction::SIZE:
field->set_type(drizzled::message::Table::Field::BIGINT);
field_constraints->set_is_unsigned(true);
break;
case TableFunction::BOOLEAN: // Currently BOOLEAN always has a value
field->set_type(drizzled::message::Table::Field::BOOLEAN);
field_constraints->set_is_unsigned(true);
break;
}
}
plugin::TableFunction::Generator::Generator(Field **arg) :
columns(arg),
session(current_session)
{
scs= system_charset_info;
}
bool plugin::TableFunction::Generator::sub_populate(uint32_t field_size)
{
bool ret;
uint64_t difference;
columns_iterator= columns;
ret= populate();
difference= columns_iterator - columns;
if (ret == true)
{
assert(difference == field_size);
}
return ret;
}
void plugin::TableFunction::Generator::push(uint64_t arg)
{
(*columns_iterator)->store(static_cast<int64_t>(arg), true);
(*columns_iterator)->set_notnull();
columns_iterator++;
}
void plugin::TableFunction::Generator::push(int64_t arg)
{
(*columns_iterator)->store(arg, false);
(*columns_iterator)->set_notnull();
columns_iterator++;
}
void plugin::TableFunction::Generator::push(const char *arg, uint32_t length)
{
assert(columns_iterator);
assert(*columns_iterator);
assert(arg);
length= length ? length : strlen(arg);
if ((*columns_iterator)->char_length() < length)
length= (*columns_iterator)->char_length();
(*columns_iterator)->store(arg, length, scs);
(*columns_iterator)->set_notnull();
columns_iterator++;
}
void plugin::TableFunction::Generator::push()
{
/* Only accept NULLs */
assert((*columns_iterator)->maybe_null());
(*columns_iterator)->set_null();
columns_iterator++;
}
void plugin::TableFunction::Generator::push(const std::string& arg)
{
push(arg.c_str(), arg.length());
}
void plugin::TableFunction::Generator::push(bool arg)
{
if (arg)
{
(*columns_iterator)->store("YES", 3, scs);
}
else
{
(*columns_iterator)->store("NO", 2, scs);
}
columns_iterator++;
}
bool plugin::TableFunction::Generator::isWild(const std::string &predicate)
{
if (not lex().wild)
return false;
bool match= wild_case_compare(system_charset_info,
predicate.c_str(),
lex().wild->ptr());
return match;
}
} /* namespace drizzled */
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