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/*
* Copyright (c) 2007, 2014, Oracle and/or its affiliates. All rights reserved.
*
* 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 "sql_statement_decomposer.h"
#include "base/string_utilities.h"
#include <boost/foreach.hpp>
#include <iomanip>
std::string SelectItem::effective_alias() const
{
if (wildcard)
return "*";
if (!alias.empty())
return alias;
if (!expr.empty())
return expr;
return field;
}
std::string SelectItem::state_as_string() const
{
return base::strfmt("{%s}.{%s}.{%s}.{%s}.{%s}.{%i}", schema.c_str(), table.c_str(), field.c_str(), expr.c_str(), alias.c_str(), wildcard);
}
std::ostream& operator << (std::ostream &os, SelectStatement &s)
{
int indent= 0;
for (SelectStatement::Ref parent= s.parent; parent; parent= parent->parent)
++indent;
os << std::setw(indent*2) << "" << "{SELECT\n";
BOOST_FOREACH (const SelectItem &select_item, s.select_items)
os << std::setw((indent+1)*2) << "" << select_item.state_as_string() << "\n";
os << std::setw(indent*2) << "" << "FROM\n";
BOOST_FOREACH (const FromItem &from_item, s.from_items)
{
if (from_item.statement)
os << *from_item.statement;
else
os << std::setw((indent+1)*2) << "";
if (!from_item.schema.empty())
os << from_item.schema << ".";
os << from_item.table;
if (!from_item.alias.empty())
os << " " << from_item.alias;
os << "\n";
}
os << std::setw(indent*2) << "" << "}";
return os;
}
Sql_statement_decomposer::Sql_statement_decomposer(grt::GRT *grt)
:
Sql_parser_base(grt)
{
}
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