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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Sun Microsystems, Inc.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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 <plugin/schema_dictionary/dictionary.h>
using namespace std;
using namespace drizzled;
ColumnsTool::ColumnsTool() :
DataDictionary("COLUMNS")
{
add_field("TABLE_SCHEMA", plugin::TableFunction::STRING, MAXIMUM_IDENTIFIER_LENGTH, false);
add_field("TABLE_NAME", plugin::TableFunction::STRING, MAXIMUM_IDENTIFIER_LENGTH, false);
add_field("COLUMN_NAME", plugin::TableFunction::STRING, MAXIMUM_IDENTIFIER_LENGTH, false);
add_field("COLUMN_TYPE");
add_field("ORDINAL_POSITION", plugin::TableFunction::NUMBER, 0, false);
add_field("COLUMN_DEFAULT", plugin::TableFunction::VARBINARY, 65535, true);
add_field("COLUMN_DEFAULT_IS_NULL", plugin::TableFunction::BOOLEAN, 0, false);
add_field("COLUMN_DEFAULT_UPDATE");
add_field("IS_SIGNED", plugin::TableFunction::BOOLEAN, 0, true);
add_field("IS_AUTO_INCREMENT", plugin::TableFunction::BOOLEAN, 0, false);
add_field("IS_NULLABLE", plugin::TableFunction::BOOLEAN, 0, false);
add_field("IS_INDEXED", plugin::TableFunction::BOOLEAN, 0, false);
add_field("IS_USED_IN_PRIMARY", plugin::TableFunction::BOOLEAN, 0, false);
add_field("IS_UNIQUE", plugin::TableFunction::BOOLEAN, 0, false);
add_field("IS_MULTI", plugin::TableFunction::BOOLEAN, 0, false);
add_field("IS_FIRST_IN_MULTI", plugin::TableFunction::BOOLEAN, 0, false);
add_field("INDEXES_FOUND_IN", plugin::TableFunction::NUMBER, 0, false);
add_field("DATA_TYPE");
add_field("DATA_ARCHETYPE");
add_field("CHARACTER_MAXIMUM_LENGTH", plugin::TableFunction::NUMBER);
add_field("CHARACTER_OCTET_LENGTH", plugin::TableFunction::NUMBER);
add_field("NUMERIC_PRECISION", plugin::TableFunction::NUMBER);
add_field("NUMERIC_SCALE", plugin::TableFunction::NUMBER);
add_field("ENUM_VALUES", plugin::TableFunction::STRING, 1024, true);
add_field("COLLATION_NAME");
add_field("COLUMN_COMMENT", plugin::TableFunction::STRING, 1024, true);
}
ColumnsTool::Generator::Generator(Field **arg) :
DataDictionary::Generator(arg),
field_generator(getSession())
{
}
bool ColumnsTool::Generator::populate()
{
drizzled::generator::FieldPair field_pair;
while (!!(field_pair= field_generator))
{
const drizzled::message::Table *table_message= field_pair.first;
int32_t field_iterator= field_pair.second;
const message::Table::Field &column(table_message->field(field_pair.second));
/* TABLE_SCHEMA */
push(table_message->schema());
/* TABLE_NAME */
push(table_message->name());
/* COLUMN_NAME */
push(column.name());
/* COLUMN_TYPE */
push(drizzled::message::type(column.type()));
/* ORDINAL_POSITION */
push(static_cast<int64_t>(field_iterator));
/* COLUMN_DEFAULT */
if (column.options().has_default_value())
{
push(column.options().default_value());
}
else if (column.options().has_default_bin_value())
{
push(column.options().default_bin_value().c_str(), column.options().default_bin_value().length());
}
else if (column.options().has_default_expression())
{
push(column.options().default_expression());
}
else
{
push();
}
/* COLUMN_DEFAULT_IS_NULL */
push(column.options().default_null());
/* COLUMN_DEFAULT_UPDATE */
push(column.options().update_expression());
/* IS_SIGNED */
if (drizzled::message::is_numeric(column))
{
push(true);
}
else
{
push();
}
/* IS_AUTO_INCREMENT */
push(column.numeric_options().is_autoincrement());
/* IS_NULLABLE */
push(not column.constraints().is_notnull());
/* IS_INDEXED, IS_USED_IN_PRIMARY, IS_UNIQUE, IS_MULTI, IS_FIRST_IN_MULTI, INDEXES_FOUND_IN */
bool is_indexed= false;
bool is_primary= false;
bool is_unique= false;
bool is_multi= false;
bool is_multi_first= false;
int64_t indexes_found_in= 0;
for (int32_t x= 0; x < table_message->indexes_size() ; x++)
{
const drizzled::message::Table::Index &index(table_message->indexes(x));
for (int32_t y= 0; y < index.index_part_size() ; y++)
{
const drizzled::message::Table::Index::IndexPart &index_part(index.index_part(y));
if (static_cast<int32_t>(index_part.fieldnr()) == field_iterator)
{
indexes_found_in++;
is_indexed= true;
if (index.is_primary())
is_primary= true;
if (index.is_unique())
is_unique= true;
if (index.index_part_size() > 1)
{
is_multi= true;
if (y == 0)
is_multi_first= true;
}
}
}
}
/* ...IS_INDEXED, IS_USED_IN_PRIMARY, IS_UNIQUE, IS_MULTI, IS_FIRST_IN_MULTI, INDEXES_FOUND_IN */
push(is_indexed);
push(is_primary);
push(is_unique);
push(is_multi);
push(is_multi_first);
push(indexes_found_in);
/* DATA_TYPE <-- display the type that the user is going to expect, which is not the same as the type we store internally */
push(drizzled::message::type(column));
/* DATA_ARCHETYPE */
push(drizzled::message::type(column.type()));
/* "CHARACTER_MAXIMUM_LENGTH" */
push(static_cast<int64_t>(column.string_options().length()));
/* "CHARACTER_OCTET_LENGTH" */
push(static_cast<int64_t>(column.string_options().length()) * 4);
/* "NUMERIC_PRECISION" */
push(static_cast<int64_t>(column.numeric_options().precision()));
/* "NUMERIC_SCALE" */
push(static_cast<int64_t>(column.numeric_options().scale()));
/* "ENUM_VALUES" */
if (column.type() == drizzled::message::Table::Field::ENUM)
{
string destination;
size_t num_field_values= column.enumeration_values().field_value_size();
for (size_t x= 0; x < num_field_values; ++x)
{
const string &type= column.enumeration_values().field_value(x);
if (x != 0)
destination.push_back(',');
destination.push_back('\'');
destination.append(type);
destination.push_back('\'');
}
push(destination);
}
else
{
push();
}
/* "COLLATION_NAME" */
push(column.string_options().collation());
/* "COLUMN_COMMENT" */
if (column.has_comment())
{
push(column.comment());
}
else
{
push();
}
return true;
}
return false;
}
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