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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>
#include <drizzled/statement/select.h>
using namespace std;
using namespace drizzled;
IndexPartsTool::IndexPartsTool() :
IndexesTool("INDEX_PARTS")
{
add_field("TABLE_SCHEMA");
add_field("TABLE_NAME");
add_field("INDEX_NAME");
add_field("COLUMN_NAME");
add_field("COLUMN_NUMBER", plugin::TableFunction::NUMBER, 0, false);
add_field("SEQUENCE_IN_INDEX", plugin::TableFunction::NUMBER, 0, false);
add_field("COMPARE_LENGTH", plugin::TableFunction::NUMBER, 0, true);
add_field("IS_ORDER_REVERSE", 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_NULLABLE", plugin::TableFunction::BOOLEAN, 0, false);
}
IndexPartsTool::Generator::Generator(Field **arg) :
IndexesTool::Generator(arg),
index_part_iterator(0),
is_index_part_primed(false)
{
}
bool IndexPartsTool::Generator::nextIndexPartsCore()
{
if (is_index_part_primed)
{
index_part_iterator++;
}
else
{
if (not isIndexesPrimed())
return false;
index_part_iterator= 0;
is_index_part_primed= true;
}
if (index_part_iterator >= getIndex().index_part_size())
return false;
index_part= getIndex().index_part(index_part_iterator);
return true;
}
bool IndexPartsTool::Generator::nextIndexParts()
{
while (not nextIndexPartsCore())
{
if (not nextIndex())
return false;
is_index_part_primed= false;
}
return true;
}
bool IndexPartsTool::Generator::populate()
{
if (not nextIndexParts())
return false;
fill();
return true;
}
void IndexPartsTool::Generator::fill()
{
const message::Table::Field &field= getTableProto().field(index_part.fieldnr());
/* TABLE_SCHEMA */
push(getTableProto().schema());
/* TABLE_NAME */
push(getTableProto().name());
/* INDEX_NAME */
push(getIndex().name());
/* COLUMN_NAME */
push(field.name());
/* COLUMN_NUMBER */
push(static_cast<int64_t>(index_part.fieldnr()));
/* SEQUENCE_IN_INDEX */
push(static_cast<int64_t>(index_part_iterator));
/* COMPARE_LENGTH */
if ((field.type() == message::Table::Field::VARCHAR or
field.type() == message::Table::Field::BLOB) and
(index_part.has_compare_length()) and
(index_part.compare_length() != field.string_options().length()))
{
push(static_cast<int64_t>(index_part.compare_length()));
}
else
push();
/* IS_ORDER_REVERSE */
push(index_part.in_reverse_order());
/* IS_USED_IN_PRIMARY */
push(getIndex().is_primary());
/* IS_UNIQUE */
push(getIndex().is_unique());
/* IS_NULLABLE */
push(getIndex().options().null_part_key());
}
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