swap optimization

Data/include/Poco/Data/BLOB.h

@@ -206,9 +206,27 @@ inline void BLOB::compact()
 }
 
 
+inline void swap(BLOB& b1, BLOB& b2)
+{
+	b1.swap(b2);
+}
+
+
 } } // namespace Poco::Data
 
 
+namespace std
+{
+	template<>
+	inline void swap<Poco::Data::BLOB>(Poco::Data::BLOB& b1, 
+		Poco::Data::BLOB& b2)
+		/// Full template specalization of std:::swap for BLOB
+	{
+		b1.swap(b2);
+	}
+}
+
+
 //
 // DynamicAnyHolderImpl<BLOB>
 //

Data/include/Poco/Data/Column.h

@@ -93,8 +93,9 @@ public:
 	void swap(Column& other)
 		/// Swaps the column with another one.
 	{
-		std::swap(_metaColumn, other._metaColumn);
-		std::swap(_pData, other._pData);
+		using std::swap;
+		swap(_metaColumn, other._metaColumn);
+		swap(_pData, other._pData);
 	}
 
 	Container& data()
@@ -238,9 +239,10 @@ public:
 	void swap(Column& other)
 		/// Swaps the column with another one.
 	{
-		std::swap(_metaColumn, other._metaColumn);
-		std::swap(_pData, other._pData);
-		std::swap(_deque, other._deque);
+		using std::swap;
+		swap(_metaColumn, other._metaColumn);
+		swap(_pData, other._pData);
+		swap(_deque, other._deque);
 	}
 
 	Container& data()
@@ -373,8 +375,9 @@ public:
 	void swap(Column& other)
 		/// Swaps the column with another one.
 	{
-		std::swap(_metaColumn, other._metaColumn);
-		std::swap(_pData, other._pData);
+		using std::swap;
+		swap(_metaColumn, other._metaColumn);
+		swap(_pData, other._pData);
 	}
 
 	List& data()
@@ -482,6 +485,13 @@ private:
 };
 
 
+template <typename T, typename C>
+inline void swap(Column<T,C>& c1, Column<T,C>& c2)
+{
+	c1.swap(c2);
+}
+
+
 } } // namespace Poco::Data
 
 

Data/include/Poco/Data/Session.h

@@ -330,7 +330,25 @@ inline SessionImpl* Session::impl()
 }
 
 
+inline void swap(Session& s1, Session& s2)
+{
+	s1.swap(s2);
+}
+
+
 } } // namespace Poco::Data
 
 
+namespace std
+{
+	template<>
+	inline void swap<Poco::Data::Session>(Poco::Data::Session& s1, 
+		Poco::Data::Session& s2)
+		/// Full template specalization of std:::swap for Session
+	{
+		s1.swap(s2);
+	}
+}
+
+
 #endif // Data_Session_INCLUDED

Data/include/Poco/Data/Statement.h

@@ -438,7 +438,25 @@ inline bool Statement::isAsync() const
 }
 
 
+inline void swap(Statement& s1, Statement& s2)
+{
+	s1.swap(s2);
+}
+
+
 } } // namespace Poco::Data
 
 
+namespace std
+{
+	template<>
+	inline void swap<Poco::Data::Statement>(Poco::Data::Statement& s1, 
+		Poco::Data::Statement& s2)
+		/// Full template specalization of std:::swap for Statement
+	{
+		s1.swap(s2);
+	}
+}
+
+
 #endif // Data_Statement_INCLUDED

Data/src/Statement.cpp

@@ -87,10 +87,12 @@ Statement& Statement::operator = (const Statement& stmt)
 
 void Statement::swap(Statement& other)
 {
-	std::swap(_ptr, other._ptr);
-	std::swap(_async, other._async);
-	std::swap(_pAsyncExec, other._pAsyncExec);
-	std::swap(_pResult, other._pResult);
+	using std::swap;
+	
+	swap(_ptr, other._ptr);
+	swap(_async, other._async);
+	swap(_pAsyncExec, other._pAsyncExec);
+	swap(_pResult, other._pResult);
 }
 
 

Data/testsuite/src/DataTest.cpp

@@ -196,6 +196,11 @@ void DataTest::testBLOB()
 	assert (blobNumStr.content() != blobChrStr.content());
 	assert (&blobNumStr.content() != &blobChrStr.content());
 	assert (blobNumStr == blobChrVec);
+
+	Poco::Data::swap(blobNumStr, blobChrVec);
+	assert (blobNumStr == blobChrVec);
+	std::swap(blobNumStr, blobChrVec);
+	assert (blobNumStr == blobChrVec);
 }
 
 
@@ -420,6 +425,47 @@ void DataTest::testColumnVector()
 	assert (c.rowCount() == 0);
 	assert (c1.rowCount() == 0);
 	assert (c2.rowCount() == 0);
+
+	std::vector<int>* pV1 = new std::vector<int>;
+	pV1->push_back(1);
+	pV1->push_back(2);
+	pV1->push_back(3);
+	pV1->push_back(4);
+	pV1->push_back(5);
+	std::vector<int>* pV2 = new std::vector<int>;
+	pV2->push_back(5);
+	pV2->push_back(4);
+	pV2->push_back(3);
+	pV2->push_back(2);
+	pV2->push_back(1);
+	Column<int, std::vector<int> > c3(mc, pV1);
+	Column<int, std::vector<int> > c4(mc, pV2);
+	
+	Poco::Data::swap(c3, c4);
+	assert (c3[0] == 5);
+	assert (c3[1] == 4);
+	assert (c3[2] == 3);
+	assert (c3[3] == 2);
+	assert (c3[4] == 1);
+
+	assert (c4[0] == 1);
+	assert (c4[1] == 2);
+	assert (c4[2] == 3);
+	assert (c4[3] == 4);
+	assert (c4[4] == 5);
+
+	std::swap(c3, c4);
+	assert (c3[0] == 1);
+	assert (c3[1] == 2);
+	assert (c3[2] == 3);
+	assert (c3[3] == 4);
+	assert (c3[4] == 5);
+
+	assert (c4[0] == 5);
+	assert (c4[1] == 4);
+	assert (c4[2] == 3);
+	assert (c4[3] == 2);
+	assert (c4[4] == 1);
 }
 
 
@@ -558,6 +604,47 @@ void DataTest::testColumnDeque()
 	assert (c.rowCount() == 0);
 	assert (c1.rowCount() == 0);
 	assert (c2.rowCount() == 0);
+
+	ContainerType* pV1 = new ContainerType;
+	pV1->push_back(1);
+	pV1->push_back(2);
+	pV1->push_back(3);
+	pV1->push_back(4);
+	pV1->push_back(5);
+	ContainerType* pV2 = new ContainerType;
+	pV2->push_back(5);
+	pV2->push_back(4);
+	pV2->push_back(3);
+	pV2->push_back(2);
+	pV2->push_back(1);
+	Column<int> c3(mc, pV1);
+	Column<int> c4(mc, pV2);
+	
+	Poco::Data::swap(c3, c4);
+	assert (c3[0] == 5);
+	assert (c3[1] == 4);
+	assert (c3[2] == 3);
+	assert (c3[3] == 2);
+	assert (c3[4] == 1);
+
+	assert (c4[0] == 1);
+	assert (c4[1] == 2);
+	assert (c4[2] == 3);
+	assert (c4[3] == 4);
+	assert (c4[4] == 5);
+
+	std::swap(c3, c4);
+	assert (c3[0] == 1);
+	assert (c3[1] == 2);
+	assert (c3[2] == 3);
+	assert (c3[3] == 4);
+	assert (c3[4] == 5);
+
+	assert (c4[0] == 5);
+	assert (c4[1] == 4);
+	assert (c4[2] == 3);
+	assert (c4[3] == 2);
+	assert (c4[4] == 1);
 }
 
 
@@ -632,6 +719,47 @@ void DataTest::testColumnList()
 	assert (c.rowCount() == 0);
 	assert (c1.rowCount() == 0);
 	assert (c2.rowCount() == 0);
+
+	ContainerType* pV1 = new ContainerType;
+	pV1->push_back(1);
+	pV1->push_back(2);
+	pV1->push_back(3);
+	pV1->push_back(4);
+	pV1->push_back(5);
+	ContainerType* pV2 = new ContainerType;
+	pV2->push_back(5);
+	pV2->push_back(4);
+	pV2->push_back(3);
+	pV2->push_back(2);
+	pV2->push_back(1);
+	Column<int, ContainerType> c3(mc, pV1);
+	Column<int, ContainerType> c4(mc, pV2);
+	
+	Poco::Data::swap(c3, c4);
+	assert (c3[0] == 5);
+	assert (c3[1] == 4);
+	assert (c3[2] == 3);
+	assert (c3[3] == 2);
+	assert (c3[4] == 1);
+
+	assert (c4[0] == 1);
+	assert (c4[1] == 2);
+	assert (c4[2] == 3);
+	assert (c4[3] == 4);
+	assert (c4[4] == 5);
+
+	std::swap(c3, c4);
+	assert (c3[0] == 1);
+	assert (c3[1] == 2);
+	assert (c3[2] == 3);
+	assert (c3[3] == 4);
+	assert (c3[4] == 5);
+
+	assert (c4[0] == 5);
+	assert (c4[1] == 4);
+	assert (c4[2] == 3);
+	assert (c4[3] == 2);
+	assert (c4[4] == 1);
 }