Merge pull request #193 from LASTRADA-Software/feature/DataMapper-ctor

src/Lightweight/DataMapper/DataMapper.hpp

@@ -63,6 +63,9 @@ auto ToSharedPtrList(Container<Object, Allocator<Object>> container)
 
 /// @brief Main API for mapping records to and from the database using high level C++ syntax.
 ///
+/// A DataMapper instances operates on a single SQL connection and provides methods to
+/// create, read, update and delete records in the database.
+///
 /// @see Field, BelongsTo, HasMany, HasManyThrough, HasOneThrough
 /// @ingroup DataMapper
 class DataMapper
@@ -82,6 +85,13 @@ class DataMapper
     {
     }
 
+    /// Constructs a new data mapper, using the given connection string.
+    explicit DataMapper(SqlConnectionString connectionString):
+        _connection { std::move(connectionString) },
+        _stmt { _connection }
+    {
+    }
+
     DataMapper(DataMapper const&) = delete;
     DataMapper(DataMapper&&) noexcept = default;
     DataMapper& operator=(DataMapper const&) = delete;

src/tests/DataMapperTests.cpp

@@ -111,6 +111,12 @@ struct PersonName
     static constexpr std::string_view TableName = RecordTableName<Person>;
 };
 
+TEST_CASE_METHOD(SqlTestFixture, "Constructor with connection string", "[DataMapper]")
+{
+    auto dm = DataMapper(SqlConnection::DefaultConnectionString());
+    dm.CreateTable<Person>();
+}
+
 TEST_CASE_METHOD(SqlTestFixture, "CRUD", "[DataMapper]")
 {
     auto dm = DataMapper();