1
/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
4
* Copyright (C) 2011, Brian Aker
7
* Redistribution and use in source and binary forms, with or without
8
* modification, are permitted provided that the following conditions are met:
10
* * Redistributions of source code must retain the above copyright notice,
11
* this list of conditions and the following disclaimer.
12
* * Redistributions in binary form must reproduce the above copyright notice,
13
* this list of conditions and the following disclaimer in the documentation
14
* and/or other materials provided with the distribution.
15
* * Neither the name of Patrick Galbraith nor the names of its contributors
16
* may be used to endorse or promote products derived from this software
17
* without specific prior written permission.
19
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
23
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
29
* THE POSSIBILITY OF SUCH DAMAGE.
34
#include <drizzled/sql/exception.h>
35
#include <drizzled/sql/result_set.h>
42
static Exception exception_unknown_column("Unknown Column", "S0022", ER_BAD_FIELD_ERROR);
43
static Exception exception_no_more_results("No additional rows founds", "S0022", ER_BAD_FIELD_ERROR);
45
ResultSet::~ResultSet()
49
const std::string ResultSet::getString(size_t column_number) const
51
if (not isMore(column_number))
54
return (*_current_row)[column_number].value();
57
bool ResultSet::isNull(size_t column_number) const
59
return (*_current_row)[column_number].isNull();
62
void ResultSet::pushException(const Exception &arg) const
64
if (_exceptions.empty())
66
_exceptions.push(arg);
70
_exceptions.front().setNextException(arg);
73
bool ResultSet::isMore() const
75
if (_current_row == _results.end())
77
pushException(exception_no_more_results);
84
bool ResultSet::isMore(size_t column_number) const
86
if (column_number >= _meta_data.getColumnCount())
88
pushException(exception_unknown_column);
96
bool ResultSet::error() const
98
return not _exceptions.empty();
101
sql::Exception ResultSet::getException() const
103
return _exceptions.empty() ? sql::Exception() : _exceptions.front();
106
const ResultSetMetaData &ResultSet::getMetaData() const
111
void ResultSet::createRow()
113
assert(_meta_data.getColumnCount());
114
_results.resize(_results.size() +1);
115
_results.back().resize(_meta_data.getColumnCount());
118
void ResultSet::setColumn(size_t column_number, const std::string &arg)
120
assert(column_number < _meta_data.getColumnCount());
121
assert(_results.back().at(column_number).isNull() == false); // ie the default value
122
assert(_results.back().at(column_number).value().empty() == true); // ie no value has been set yet
123
_results.back().at(column_number).set_value(arg);
126
void ResultSet::setColumnNull(size_t column_number)
128
assert(column_number < _meta_data.getColumnCount());
129
assert(_results.back().at(column_number).isNull() == false); // ie the default value
130
assert(_results.back().at(column_number).value().empty() == true); // ie no value has been set yet
131
_results.back().at(column_number).set_null();
134
bool ResultSet::next() const
136
if (not _has_next_been_called)
138
_current_row= _results.begin();
139
_has_next_been_called= true;
146
if (_current_row == _results.end())
152
std::ostream& operator<<(std::ostream& output, const ResultSet &result_set)
154
while (result_set.next())
156
for (size_t x= 0; x < result_set.getMetaData().getColumnCount(); x++)
158
if (result_set.isNull(x))
160
output << "<null>" << '\t';
164
output << result_set.getString(x) << '\t';
174
} // namespace drizzled