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/*
* Copyright (c) 2007, 2015, 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 <glib.h>
#include <boost/signals2.hpp>
#include <cctype>
#include "mysql_sql_inserts_loader.h"
#include "mysql_sql_parser_utils.h"
#include <boost/foreach.hpp>
using namespace grt;
#define NULL_STATE_KEEPER Null_state_keeper _nsk(this);
Mysql_sql_inserts_loader::Mysql_sql_inserts_loader(grt::GRT *grt)
:
Sql_parser_base(grt),
Mysql_sql_parser_base(grt)
{
NULL_STATE_KEEPER
}
void Mysql_sql_inserts_loader::load(const std::string &sql, const std::string &schema_name)
{
NULL_STATE_KEEPER
_schema_name= schema_name;
_process_sql_statement= boost::bind(&Mysql_sql_inserts_loader::process_sql_statement, this, _1);
Mysql_sql_parser_fe sql_parser_fe(_grtm->get_app_option_string("SqlMode"));
sql_parser_fe.ignore_dml= false;
Mysql_sql_parser_base::parse_sql_script(sql_parser_fe, sql.c_str());
}
int Mysql_sql_inserts_loader::process_sql_statement(const SqlAstNode *tree)
{
if (tree)
{
if (const SqlAstNode *item= tree->subitem(sql::_statement, sql::_insert))
process_insert_statement(item);
}
return 0; // error count
}
Mysql_sql_inserts_loader::Parse_result
Mysql_sql_inserts_loader::process_insert_statement(const SqlAstNode *tree)
{
std::string schema_name= _schema_name;
std::string table_name;
Strings fields_names;
Strings fields_values;
std::vector<bool> null_fields;
const SqlAstNode *insert_field_spec= tree->subitem(sql::_insert_field_spec);
if (insert_field_spec)
{
// schema & table name
{
const SqlAstNode *table_ident= tree->subitem(sql::_insert2, sql::_insert_table, sql::_table_ident);
process_obj_full_name_item(table_ident, schema_name, table_name);
}
// fields names
{
const SqlAstNode *fields= insert_field_spec->subitem(sql::_fields);
if (fields)
{
BOOST_FOREACH (const SqlAstNode *item, *fields->subitems())
if (item->name_equals(sql::_insert_ident))
fields_names.push_back(item->restore_sql_text(_sql_statement));
}
}
// fields values
{
fields_values.reserve(fields_names.size());
null_fields.reserve(fields_names.size());
const SqlAstNode *insert_values= insert_field_spec->subitem(sql::_insert_values, sql::_values_list);
BOOST_FOREACH (const SqlAstNode *item, *insert_values->subitems())
{
if (item->name_equals(sql::_no_braces))
{
fields_values.clear();
null_fields.clear();
const SqlAstNode *values= item->subitem(sql::_opt_values, sql::_values);
BOOST_FOREACH (const SqlAstNode *item, *values->subitems())
{
if (item->name_equals(sql::_expr_or_default))
{
std::string value;
bool is_field_null= false;
if (const SqlAstNode *item1= item->subitem(sql::_expr))
if (1 == item1->subitems()->size())
if (const SqlAstNode *item2= item1->subitem(sql::_bool_pri))
if (1 == item2->subitems()->size())
if (const SqlAstNode *item3= item2->subitem(sql::_predicate))
if (1 == item3->subitems()->size())
if (const SqlAstNode *item4= item3->subitem(sql::_bit_expr))
if (1 == item4->subitems()->size())
if (const SqlAstNode *item5= item4->subitem(sql::_simple_expr))
if (1 == item5->subitems()->size())
if (const SqlAstNode *item6= item5->subitem(sql::_literal))
if (1 == item6->subitems()->size())
if (/*const SqlAstNode *item7=*/ item6->subitem(sql::_NULL_SYM))
is_field_null= true;
if (!is_field_null)
{
value= item->restore_sql_text(_sql_statement);
if (1 < value.size())
{
switch (value[0])
{
case '\'':
case '"':
value= value.substr(1, value.size()-2);
break;
default:
static const std::string func_call_seq= "\\func ";
if (value[0] == '\\')
{
if ((value.size() > func_call_seq.size()) && (value.compare(0, func_call_seq.size(), func_call_seq) == 0))
{
value= '\\' + value;
}
}
else
{
bool is_expression= false;
for (std::string::iterator i= value.begin(), i_end= value.end(); i != i_end; ++i)
{
if (!std::isdigit(*i) && (*i != '.') && (*i != ','))
{
is_expression= true;
break;
}
}
if (is_expression)
{
value= func_call_seq + value;
}
}
break;
}
}
}
fields_values.push_back(value);
null_fields.push_back(is_field_null);
}
}
const std::pair<std::string, std::string> schema_table= make_pair(schema_name, table_name);
_process_insert(sql_statement(), schema_table, fields_names, fields_values, null_fields);
}
}
}
}
return pr_processed;
}
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