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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
*
* 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() :
TablesTool("COLUMNS")
{
add_field("TABLE_SCHEMA");
add_field("TABLE_NAME");
add_field("COLUMN_NAME");
add_field("COLUMN_TYPE");
add_field("ORDINAL_POSITION", plugin::TableFunction::NUMBER);
add_field("COLUMN_DEFAULT", plugin::TableFunction::VARBINARY, 65535, true);
add_field("COLUMN_DEFAULT_IS_NULL", plugin::TableFunction::BOOLEAN);
add_field("COLUMN_DEFAULT_UPDATE");
add_field("IS_NULLABLE", plugin::TableFunction::BOOLEAN);
add_field("IS_INDEXED", plugin::TableFunction::BOOLEAN);
add_field("IS_USED_IN_PRIMARY", plugin::TableFunction::BOOLEAN);
add_field("IS_UNIQUE", plugin::TableFunction::BOOLEAN);
add_field("IS_MULTI", plugin::TableFunction::BOOLEAN);
add_field("IS_FIRST_IN_MULTI", plugin::TableFunction::BOOLEAN);
add_field("INDEXES_FOUND_IN", plugin::TableFunction::NUMBER);
add_field("DATA_TYPE");
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("COLLATION_NAME");
add_field("COLUMN_COMMENT", 1024);
}
ColumnsTool::Generator::Generator(Field **arg) :
TablesTool::Generator(arg),
column_iterator(0),
is_columns_primed(false)
{
}
bool ColumnsTool::Generator::nextColumnCore()
{
if (is_columns_primed)
{
column_iterator++;
}
else
{
if (not isTablesPrimed())
return false;
column_iterator= 0;
is_columns_primed= true;
}
if (column_iterator >= getTableProto().field_size())
return false;
column= getTableProto().field(column_iterator);
return true;
}
bool ColumnsTool::Generator::nextColumn()
{
while (not nextColumnCore())
{
if (not nextTable())
return false;
is_columns_primed= false;
}
return true;
}
bool ColumnsTool::Generator::populate()
{
if (not nextColumn())
return false;
fill();
return true;
}
void ColumnsTool::Generator::fill()
{
/* TABLE_SCHEMA */
push(getTableProto().schema());
/* TABLE_NAME */
push(getTableProto().name());
/* COLUMN_NAME */
push(column.name());
/* COLUMN_TYPE */
pushType(column.type());
/* ORDINAL_POSITION */
push(static_cast<int64_t>(column_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
push();
/* COLUMN_DEFAULT_IS_NULL */
push(column.options().default_null());
/* COLUMN_DEFAULT_UPDATE */
push(column.options().update_value());
/* IS_NULLABLE */
push(column.constraints().is_nullable());
/* 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 < getTableProto().indexes_size() ; x++)
{
drizzled::message::Table::Index index=
getTableProto().indexes(x);
for (int32_t y= 0; y < index.index_part_size() ; y++)
{
drizzled::message::Table::Index::IndexPart index_part=
index.index_part(y);
if (static_cast<int32_t>(index_part.fieldnr()) == column_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);
/* DATATYPE */
pushType(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()));
/* "COLLATION_NAME" */
push(column.string_options().collation());
/* "COLUMN_COMMENT" */
push(column.comment());
}
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