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Split text.h, some fixes and moved like and concat to text

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rbock 2015-10-30 19:48:53 +01:00
parent 4ae843b502
commit 45c3f4b4cc
20 changed files with 598 additions and 320 deletions
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1
include/sqlpp11/data_types/floating_point/column_operators.h
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@ -28,6 +28,7 @@
#define SQLPP_FLOATING_POINT_COLUMN_OPERATORS_H
#include <sqlpp11/type_traits.h>
#include <sqlpp11/assignment.h>
#include <sqlpp11/data_types/floating_point/data_type.h>
#include <sqlpp11/data_types/column_operators.h>

2
include/sqlpp11/data_types/integral/column_operators.h
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@ -28,6 +28,8 @@
#define SQLPP_INTEGRAL_COLUMN_OPERATORS_H
#include <sqlpp11/type_traits.h>
#include <sqlpp11/assignment.h>
#include <sqlpp11/value_type.h>
#include <sqlpp11/data_types/integral/data_type.h>
#include <sqlpp11/data_types/column_operators.h>

6
include/sqlpp11/data_types/integral/data_type.h
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@ -27,13 +27,7 @@
#ifndef SQLPP_INTEGRAL_DATA_TYPE_H
#define SQLPP_INTEGRAL_DATA_TYPE_H
#include <cstdlib>
#include <sqlpp11/basic_expression_operators.h>
#include <sqlpp11/type_traits.h>
#include <sqlpp11/exception.h>
#include <sqlpp11/value_type.h>
#include <sqlpp11/assignment.h>
#include <sqlpp11/result_field.h>
namespace sqlpp
{

1
include/sqlpp11/data_types/integral/expression_operators.h
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@ -28,6 +28,7 @@
#define SQLPP_INTEGRAL_EXPRESSION_OPERATORS_H
#include <sqlpp11/basic_expression_operators.h>
#include <sqlpp11/value_type.h>
#include <sqlpp11/type_traits.h>
#include <sqlpp11/data_types/integral/data_type.h>
#include <sqlpp11/assignment.h>

261
include/sqlpp11/data_types/text.h
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@ -27,256 +27,17 @@
#ifndef SQLPP_TEXT_H
#define SQLPP_TEXT_H
#include <sqlpp11/assignment.h>
#include <sqlpp11/basic_expression_operators.h>
#include <sqlpp11/type_traits.h>
#include <sqlpp11/exception.h>
#include <sqlpp11/like.h>
#include <sqlpp11/result_field.h>
#include <sqlpp11/data_types/text/data_type.h>
#include <sqlpp11/data_types/text/expression_operators.h>
#include <sqlpp11/data_types/text/column_operators.h>
#include <sqlpp11/data_types/text/parameter_type.h>
#include <sqlpp11/data_types/text/result_field.h>
#include <sqlpp11/data_types/text/operand.h>
#include <sqlpp11/data_types/text/wrap_operand.h>
#include <sqlpp11/data_types/text/serialize.h>
namespace sqlpp
{
template <typename... Args>
struct concat_t;
// text specific functions
#include <sqlpp11/data_types/text/like.h>
#include <sqlpp11/data_types/text/concat.h>
// text value type
struct text
{
using _traits = make_traits<text, tag::is_value_type>;
using _tag = tag::is_text;
using _cpp_value_type = std::string;
template <typename T>
using _is_valid_operand = is_text_t<T>;
};
// text parameter type
template <>
struct parameter_value_t<text>
{
using _value_type = text;
using _cpp_value_type = typename _value_type::_cpp_value_type;
parameter_value_t() : _value(""), _is_null(true)
{
}
parameter_value_t(const _cpp_value_type& val) : _value(val), _is_null(false)
{
}
parameter_value_t& operator=(const _cpp_value_type& val)
{
_value = val;
_is_null = false;
return *this;
}
parameter_value_t& operator=(const tvin_t<wrap_operand_t<_cpp_value_type>>& t)
{
if (t._is_trivial())
{
_value = "";
_is_null = true;
}
else
{
_value = t._value._t;
_is_null = false;
}
return *this;
}
parameter_value_t& operator=(const std::nullptr_t&)
{
_value = "";
_is_null = true;
return *this;
}
bool is_null() const
{
return _is_null;
}
_cpp_value_type value() const
{
return _value;
}
operator _cpp_value_type() const
{
return value();
}
template <typename Target>
void _bind(Target& target, size_t index) const
{
target._bind_text_parameter(index, &_value, _is_null);
}
private:
_cpp_value_type _value;
bool _is_null;
};
// text expression operators
template <typename Base>
struct expression_operators<Base, text> : public basic_expression_operators<Base, text>
{
template <typename T>
using _is_valid_operand = is_valid_operand<text, T>;
template <typename T>
concat_t<Base, wrap_operand_t<T>> operator+(T t) const
{
using rhs = wrap_operand_t<T>;
static_assert(_is_valid_operand<rhs>::value, "invalid rhs operand");
return {*static_cast<const Base*>(this), {t}};
}
template <typename T>
like_t<Base, wrap_operand_t<T>> like(T t) const
{
using rhs = wrap_operand_t<T>;
static_assert(_is_valid_operand<rhs>::value, "invalid argument for like()");
return {*static_cast<const Base*>(this), {t}};
}
};
// text column operators
template <typename Base>
struct column_operators<Base, text>
{
template <typename T>
using _is_valid_operand = is_valid_operand<text, T>;
template <typename T>
auto operator+=(T t) const -> assignment_t<Base, concat_t<Base, wrap_operand_t<T>>>
{
using rhs = wrap_operand_t<T>;
static_assert(_is_valid_operand<rhs>::value, "invalid rhs assignment operand");
return {*static_cast<const Base*>(this),
concat_t<Base, wrap_operand_t<T>>{*static_cast<const Base*>(this), rhs{t}}};
}
};
// text result field
template <typename Db, typename FieldSpec>
struct result_field_t<text, Db, FieldSpec> : public result_field_methods_t<result_field_t<text, Db, FieldSpec>>
{
static_assert(std::is_same<value_type_of<FieldSpec>, text>::value, "field type mismatch");
using _cpp_value_type = typename text::_cpp_value_type;
result_field_t() : _is_valid(false), _value_ptr(nullptr), _len(0)
{
}
void _validate()
{
_is_valid = true;
}
void _invalidate()
{
_is_valid = false;
_value_ptr = nullptr;
_len = 0;
}
bool operator==(const _cpp_value_type& rhs) const
{
return value() == rhs;
}
bool operator!=(const _cpp_value_type& rhs) const
{
return not operator==(rhs);
}
bool is_null() const
{
if (not _is_valid)
throw exception("accessing is_null in non-existing row");
return _value_ptr == nullptr;
}
bool _is_trivial() const
{
if (not _is_valid)
throw exception("accessing is_null in non-existing row");
return value() == "";
}
_cpp_value_type value() const
{
if (not _is_valid)
throw exception("accessing value in non-existing row");
if (not _value_ptr)
{
if (enforce_null_result_treatment_t<Db>::value and not null_is_trivial_value_t<FieldSpec>::value)
{
throw exception("accessing value of NULL field");
}
else
{
return "";
}
}
return std::string(_value_ptr, _value_ptr + _len);
}
template <typename Target>
void _bind(Target& target, size_t i)
{
target._bind_text_result(i, &_value_ptr, &_len);
}
private:
bool _is_valid;
const char* _value_ptr;
size_t _len;
};
template <typename Context, typename Db, typename FieldSpec>
struct serializer_t<Context, result_field_t<text, Db, FieldSpec>>
{
using _serialize_check = consistent_t;
using T = result_field_t<text, Db, FieldSpec>;
static Context& _(const T& t, Context& context)
{
if (t.is_null() and not null_is_trivial_value_t<T>::value)
{
context << "NULL";
}
else
{
context << '\'' << context.escape(t.value()) << '\'';
}
return context;
}
};
template <typename Db, typename FieldSpec>
inline std::ostream& operator<<(std::ostream& os, const result_field_t<text, Db, FieldSpec>& e)
{
if (e.is_null() and not null_is_trivial_value_t<FieldSpec>::value)
{
return os << "NULL";
}
else
{
return os << e.value();
}
}
using blob = text;
using varchar = text;
using char_ = text;
}
#endif

57
include/sqlpp11/data_types/text/column_operators.h Normal file
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@ -0,0 +1,57 @@
/*
* Copyright (c) 2013-2015, Roland Bock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQLPP_TEXT_COLUMN_OPERATORS_H
#define SQLPP_TEXT_COLUMN_OPERATORS_H
#include <sqlpp11/type_traits.h>
#include <sqlpp11/assignment.h>
#include <sqlpp11/data_types/text/data_type.h>
#include <sqlpp11/data_types/column_operators.h>
namespace sqlpp
{
template <typename... Args>
struct concat_t;
template <typename Base>
struct column_operators<Base, text>
{
template <typename T>
using _is_valid_operand = is_valid_operand<text, T>;
template <typename T>
auto operator+=(T t) const -> assignment_t<Base, concat_t<Base, wrap_operand_t<T>>>
{
using rhs = wrap_operand_t<T>;
static_assert(_is_valid_operand<rhs>::value, "invalid rhs assignment operand");
return {*static_cast<const Base*>(this),
concat_t<Base, wrap_operand_t<T>>{*static_cast<const Base*>(this), rhs{t}}};
}
};
}
#endif

0
include/sqlpp11/concat.h → include/sqlpp11/data_types/text/concat.h
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48
include/sqlpp11/data_types/text/data_type.h Normal file
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@ -0,0 +1,48 @@
/*
* Copyright (c) 2013-2015, Roland Bock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQLPP_TEXT_DATA_TYPE_H
#define SQLPP_TEXT_DATA_TYPE_H
#include <sqlpp11/type_traits.h>
namespace sqlpp
{
struct text
{
using _traits = make_traits<text, tag::is_value_type>;
using _tag = tag::is_text;
using _cpp_value_type = std::string;
template <typename T>
using _is_valid_operand = is_text_t<T>;
};
using blob = text;
using varchar = text;
using char_ = text;
}
#endif

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include/sqlpp11/data_types/text/expression_operators.h Normal file
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@ -0,0 +1,68 @@
/*
* Copyright (c) 2013-2015, Roland Bock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQLPP_TEXT_EXPRESSION_OPERATORS_H
#define SQLPP_TEXT_EXPRESSION_OPERATORS_H
#include <sqlpp11/basic_expression_operators.h>
#include <sqlpp11/type_traits.h>
#include <sqlpp11/data_types/text/data_type.h>
#include <sqlpp11/assignment.h>
namespace sqlpp
{
template <typename... Args>
struct concat_t;
template <typename Operand, typename Pattern>
struct like_t;
template <typename Base>
struct expression_operators<Base, text> : public basic_expression_operators<Base, text>
{
template <typename T>
using _is_valid_operand = is_valid_operand<text, T>;
template <typename T>
concat_t<Base, wrap_operand_t<T>> operator+(T t) const
{
using rhs = wrap_operand_t<T>;
static_assert(_is_valid_operand<rhs>::value, "invalid rhs operand");
return {*static_cast<const Base*>(this), {t}};
}
template <typename T>
like_t<Base, wrap_operand_t<T>> like(T t) const
{
using rhs = wrap_operand_t<T>;
static_assert(_is_valid_operand<rhs>::value, "invalid argument for like()");
return {*static_cast<const Base*>(this), {t}};
}
};
}
#endif

0
include/sqlpp11/like.h → include/sqlpp11/data_types/text/like.h
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include/sqlpp11/data_types/text/operand.h Normal file
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@ -0,0 +1,67 @@
/*
* Copyright (c) 2013-2015, Roland Bock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQLPP_TEXT_OPERAND_H
#define SQLPP_TEXT_OPERAND_H
#include <sqlpp11/type_traits.h>
#include <sqlpp11/alias_operators.h>
namespace sqlpp
{
struct text;
struct text_operand : public alias_operators<text_operand>
{
using _traits = make_traits<text, tag::is_expression, tag::is_wrapped_value>;
using _nodes = detail::type_vector<>;
using _is_aggregate_expression = std::true_type;
using _value_t = std::string;
text_operand() : _t{}
{
}
text_operand(_value_t t) : _t(t)
{
}
text_operand(const text_operand&) = default;
text_operand(text_operand&&) = default;
text_operand& operator=(const text_operand&) = default;
text_operand& operator=(text_operand&&) = default;
~text_operand() = default;
bool _is_trivial() const
{
return _t.empty();
}
_value_t _t;
};
}
#endif

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include/sqlpp11/data_types/text/parameter_type.h Normal file
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/*
* Copyright (c) 2013-2015, Roland Bock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQLPP_TEXT_PARAMETER_TYPE_H
#define SQLPP_TEXT_PARAMETER_TYPE_H
#include <sqlpp11/data_types/parameter_value.h>
#include <sqlpp11/data_types/text/data_type.h>
#include <sqlpp11/data_types/text/wrap_operand.h>
#include <sqlpp11/data_types/text/operand.h>
#include <sqlpp11/tvin.h>
namespace sqlpp
{
template <>
struct parameter_value_t<text>
{
using _value_type = text;
using _cpp_value_type = typename _value_type::_cpp_value_type;
parameter_value_t() : _value(""), _is_null(true)
{
}
parameter_value_t(const _cpp_value_type& val) : _value(val), _is_null(false)
{
}
parameter_value_t& operator=(const _cpp_value_type& val)
{
_value = val;
_is_null = false;
return *this;
}
parameter_value_t& operator=(const tvin_t<wrap_operand_t<_cpp_value_type>>& t)
{
if (t._is_trivial())
{
_value = "";
_is_null = true;
}
else
{
_value = t._value._t;
_is_null = false;
}
return *this;
}
parameter_value_t& operator=(const std::nullptr_t&)
{
_value = "";
_is_null = true;
return *this;
}
bool is_null() const
{
return _is_null;
}
_cpp_value_type value() const
{
return _value;
}
operator _cpp_value_type() const
{
return value();
}
template <typename Target>
void _bind(Target& target, size_t index) const
{
target._bind_text_parameter(index, &_value, _is_null);
}
private:
_cpp_value_type _value;
bool _is_null;
};
}
#endif

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include/sqlpp11/data_types/text/result_field.h Normal file
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/*
* Copyright (c) 2013-2015, Roland Bock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQLPP_TEXT_RESULT_FIELD_H
#define SQLPP_TEXT_RESULT_FIELD_H
#include <sqlpp11/basic_expression_operators.h>
#include <sqlpp11/exception.h>
#include <sqlpp11/result_field.h>
#include <sqlpp11/result_field_methods.h>
#include <sqlpp11/type_traits.h>
#include <sqlpp11/data_types/text/data_type.h>
namespace sqlpp
{
template <typename Db, typename FieldSpec>
struct result_field_t<text, Db, FieldSpec> : public result_field_methods_t<result_field_t<text, Db, FieldSpec>>
{
static_assert(std::is_same<value_type_of<FieldSpec>, text>::value, "field type mismatch");
using _cpp_value_type = typename text::_cpp_value_type;
result_field_t() : _is_valid(false), _value_ptr(nullptr), _len(0)
{
}
void _validate()
{
_is_valid = true;
}
void _invalidate()
{
_is_valid = false;
_value_ptr = nullptr;
_len = 0;
}
bool operator==(const _cpp_value_type& rhs) const
{
return value() == rhs;
}
bool operator!=(const _cpp_value_type& rhs) const
{
return not operator==(rhs);
}
bool is_null() const
{
if (not _is_valid)
throw exception("accessing is_null in non-existing row");
return _value_ptr == nullptr;
}
bool _is_trivial() const
{
if (not _is_valid)
throw exception("accessing is_null in non-existing row");
return value() == "";
}
_cpp_value_type value() const
{
if (not _is_valid)
throw exception("accessing value in non-existing row");
if (not _value_ptr)
{
if (enforce_null_result_treatment_t<Db>::value and not null_is_trivial_value_t<FieldSpec>::value)
{
throw exception("accessing value of NULL field");
}
else
{
return "";
}
}
return std::string(_value_ptr, _value_ptr + _len);
}
template <typename Target>
void _bind(Target& target, size_t i)
{
target._bind_text_result(i, &_value_ptr, &_len);
}
private:
bool _is_valid;
const char* _value_ptr;
size_t _len;
};
}
#endif

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include/sqlpp11/data_types/text/serialize.h Normal file
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/*
* Copyright (c) 2013-2015, Roland Bock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQLPP_TEXT_SERIALIZE_H
#define SQLPP_TEXT_SERIALIZE_H
#include <sqlpp11/result_field.h>
#include <sqlpp11/data_types/text/operand.h>
#include <ostream>
namespace sqlpp
{
template <typename Context>
struct serializer_t<Context, text_operand>
{
using _serialize_check = consistent_t;
using Operand = text_operand;
static Context& _(const Operand& t, Context& context)
{
context << '\'' << context.escape(t._t) << '\'';
return context;
}
};
template <typename Db, typename FieldSpec>
inline std::ostream& operator<<(std::ostream& os, const result_field_t<text, Db, FieldSpec>& e)
{
if (e.is_null() and not null_is_trivial_value_t<FieldSpec>::value)
{
return os << "NULL";
}
else
{
return os << e.value();
}
}
}
#endif

46
include/sqlpp11/data_types/text/wrap_operand.h Normal file
View File

@ -0,0 +1,46 @@
/*
* Copyright (c) 2013-2015, Roland Bock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQLPP_TEXT_WRAP_OPERAND_H
#define SQLPP_TEXT_WRAP_OPERAND_H
#include <utility>
#include <sqlpp11/type_traits.h>
#include <sqlpp11/wrap_operand.h>
namespace sqlpp
{
struct text_operand;
template <typename T>
struct wrap_operand<
T,
typename std::enable_if<std::is_convertible<T, std::string>::value and not is_result_field_t<T>::value>::type>
{
using type = text_operand;
};
}
#endif

1
include/sqlpp11/functions.h
View File

@ -36,7 +36,6 @@
#include <sqlpp11/is_not_null.h>
#include <sqlpp11/exists.h>
#include <sqlpp11/any.h>
#include <sqlpp11/concat.h>
#include <sqlpp11/some.h>
#include <sqlpp11/count.h>
#include <sqlpp11/min.h>

5
include/sqlpp11/result_field.h
View File

@ -28,7 +28,8 @@
#define SQLPP_RESULT_FIELD_H
#include <sqlpp11/wrong.h>
#include <sqlpp11/result_field_methods.h>
#include <sqlpp11/wrap_operand.h>
#include <sqlpp11/type_traits.h>
namespace sqlpp
{
@ -52,7 +53,7 @@ namespace sqlpp
}
else
{
context << t.value();
serialize(wrap_operand_t<T>{t}, context);
}
return context;
}

9
include/sqlpp11/type_traits.h
View File

@ -229,6 +229,15 @@ namespace sqlpp
SQLPP_RECURSIVE_TRAIT_GENERATOR(can_be_null)
SQLPP_RECURSIVE_TRAIT_GENERATOR(contains_aggregate_function)
template <typename ValueType, typename T>
struct is_valid_operand
{
static constexpr bool value =
is_expression_t<T>::value // expressions are OK
and ValueType::template _is_valid_operand<T>::value // the correct value type is required, of course
;
};
namespace detail
{
template <typename KnownAggregates, typename T, typename Leaf = void>

9
include/sqlpp11/value_type_fwd.h
View File

@ -38,15 +38,6 @@ namespace sqlpp
static_assert(wrong_t<expression_operators>::value, "Missing expression operators for ValueType");
};
template <typename ValueType, typename T>
struct is_valid_operand
{
static constexpr bool value =
is_expression_t<T>::value // expressions are OK
and ValueType::template _is_valid_operand<T>::value // the correct value type is required, of course
;
};
template <typename ValueType, typename T, typename Enable = void>
struct is_valid_assignment_operand
{

52
include/sqlpp11/wrap_operand.h
View File

@ -50,7 +50,6 @@ namespace sqlpp
namespace sqlpp
{
struct integral;
struct text;
struct day_point_operand : public alias_operators<day_point_operand>
{
@ -143,49 +142,6 @@ namespace sqlpp
}
};
struct text_operand : public alias_operators<text_operand>
{
using _traits = make_traits<text, tag::is_expression, tag::is_wrapped_value>;
using _nodes = detail::type_vector<>;
using _is_aggregate_expression = std::true_type;
using _value_t = std::string;
text_operand() : _t{}
{
}
text_operand(_value_t t) : _t(t)
{
}
text_operand(const text_operand&) = default;
text_operand(text_operand&&) = default;
text_operand& operator=(const text_operand&) = default;
text_operand& operator=(text_operand&&) = default;
~text_operand() = default;
bool _is_trivial() const
{
return _t.empty();
}
_value_t _t;
};
template <typename Context>
struct serializer_t<Context, text_operand>
{
using _serialize_check = consistent_t;
using Operand = text_operand;
static Context& _(const Operand& t, Context& context)
{
context << '\'' << context.escape(t._t) << '\'';
return context;
}
};
template <typename Period>
struct wrap_operand<std::chrono::time_point<std::chrono::system_clock, Period>, void>
{
@ -197,14 +153,6 @@ namespace sqlpp
{
using type = day_point_operand;
};
template <typename T>
struct wrap_operand<
T,
typename std::enable_if<std::is_convertible<T, std::string>::value and not is_result_field_t<T>::value>::type>
{
using type = text_operand;
};
}
#endif