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== `sqlite/extension.hpp`
=== `BOOST_SQLITE_EXTENSION`
This macro can be used to create an sqlite extension.
.Definition
[source,cpp]
----
#define BOOST_SQLITE_EXTENSION(Name, Conn)
----
Name:: The name of the module.
Conn:: The parameter name of the connection.
NOTE: When defining BOOST_SQLITE_COMPILE_EXTENSION (was is done in extension.hpp)
sqlite will use an inline namespace to avoid symbol clashes.
You must link against `Boost::sqlite_ext` and not `Boost::sqlite` and should not mix both in the same binary.
.Example
[source,cpp]
----
BOOST_SQLITE_EXTENSION(extension, conn)
{
create_scalar_function(
conn, "assert",
[](boost::sqlite::context<>, boost::span<boost::sqlite::value, 1u> sp)
{
if (sp.front().get_int() == 0)
throw std::logic_error("assertion failed");
});
}
----
|
