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Made boolean expression more usable

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rbock
2014-08-12 18:48:50 +02:00
parent c0902f8683
commit ad1c5f94bb
3 changed files with 29 additions and 22 deletions
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include/sqlpp11/boolean_expression.h
+16 -15
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@@ -33,17 +33,17 @@
namespace sqlpp
{
template<typename Database>
struct boolean_expression_t
struct boolean_expression_t: public boolean::template expression_operators<boolean_expression_t<Database>>
{
using _traits = make_traits<boolean, tag::is_expression>;
using _recursive_traits = make_recursive_traits<>;
template<typename Expression>
boolean_expression_t(Expression expression):
_expression(expression)
template<typename Expr>
boolean_expression_t(Expr expr):
_expr(expr)
{
static_assert(is_expression_t<Expression>::value, "boolean_expression requires a boolean expression argument");
static_assert(is_boolean_t<Expression>::value, "boolean_expression requires a boolean expression argument");
static_assert(is_expression_t<Expr>::value, "boolean_expression requires a boolean expression argument");
static_assert(is_boolean_t<Expr>::value, "boolean_expression requires a boolean expression argument");
}
boolean_expression_t(const boolean_expression_t&) = default;
@@ -52,19 +52,20 @@ namespace sqlpp
boolean_expression_t& operator=(boolean_expression_t&&) = default;
~boolean_expression_t() = default;
interpretable_t<Database> _expression;
interpretable_t<Database> _expr;
};
template<typename Database, typename T>
boolean_expression_t<Database> boolean_expression(const Database&, T t)
{
return {t};
}
template<typename Database, typename T>
boolean_expression_t<Database> boolean_expression(T t)
{
return {t};
using Expr = wrap_operand_t<T>;
return {Expr{t}};
}
template<typename Database, typename T>
boolean_expression_t<Database> boolean_expression(const Database&, T t)
{
return boolean_expression<Database>(t);
}
template<typename Context, typename Database>
@@ -74,7 +75,7 @@ namespace sqlpp
static Context& _(const T& t, Context& context)
{
return serialize(t._expression);
return serialize(t._expr, context);
}
};