///////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2010 Artyom Beilis (Tonkikh) <artyomtnk@yahoo.com>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef CPPDB_ERRORS_H
#define CPPDB_ERRORS_H
#include <stdexcept>
namespace cppdb {
///
/// \brief This is the base error of all errors thrown by cppdb.
///
class cppdb_error : public std::runtime_error {
public:
///
/// Create a cppdb_error with error message \a v
///
cppdb_error(std::string const &v) : std::runtime_error(v) {}
};
///
/// \brief invalid data conversions
///
/// It may be thrown if the data can't be converted to required format, for example trying to fetch
/// a negative value with unsigned type or parsing invalid string as datatime.
///
class bad_value_cast : public cppdb_error {
public:
bad_value_cast() : cppdb_error("cppdb::bad_value_cast can't convert data")
{
}
};
///
/// \brief attempt to fetch a null value.
///
/// Thrown by cppdb::result::get functions.
///
class null_value_fetch : public cppdb_error {
public:
null_value_fetch() : cppdb_error("cppdb::null_value_fetch attempt fetch null column")
{
}
};
///
/// \brief attempt to fetch a value from the row without calling next() first time or when next() returned false.
///
class empty_row_access : public cppdb_error {
public:
empty_row_access() : cppdb_error("cppdb::empty_row_access attempt to fetch from empty column")
{
}
};
///
/// \brief trying to fetch a value using invalid column index
///
class invalid_column : public cppdb_error {
public:
invalid_column() : cppdb_error("cppdb::invalid_column attempt access to invalid column")
{
}
};
///
/// \brief trying to fetch a value using invalid placeholder
///
class invalid_placeholder : public cppdb_error {
public:
invalid_placeholder() : cppdb_error("cppdb::invalid_placeholder attempt bind to invalid placeholder")
{
}
};
///
/// \brief trying to fetch a single row for a query that returned multiple ones.
///
class multiple_rows_query : public cppdb_error {
public:
multiple_rows_query() : cppdb_error( "cppdb::multiple_rows_query "
"multiple rows result for a single row request")
{
}
};
///
/// \brief This operation is not supported by the backend
///
class not_supported_by_backend : public cppdb_error {
public:
///
/// Create a not_supported_by_backend with error message \a e
///
not_supported_by_backend(std::string const &e) :
cppdb_error(e)
{
}
};
}
#endif
