diff --git a/src/opt/hdf5/include/cnorxz_hdf5.cc.h b/src/opt/hdf5/include/cnorxz_hdf5.cc.h
new file mode 100644
index 0000000..b4d78b9
--- /dev/null
+++ b/src/opt/hdf5/include/cnorxz_hdf5.cc.h
@@ -0,0 +1,4 @@
+
+#include "h5_types.cc.h"
+#include "h5_group.cc.h"
+#include "h5_table.cc.h"
diff --git a/src/opt/hdf5/include/cnorxz_hdf5.h b/src/opt/hdf5/include/cnorxz_hdf5.h
index b4de2fc..113ee7c 100644
--- a/src/opt/hdf5/include/cnorxz_hdf5.h
+++ b/src/opt/hdf5/include/cnorxz_hdf5.h
@@ -2,3 +2,7 @@
 #include "h5_content_base.h"
 #include "h5_file.h"
 #include "h5_group.h"
+#include "h5_table.h"
+#include "h5_types.h"
+
+#include "cnorxz_hdf5.cc.h"
diff --git a/src/opt/hdf5/include/h5_table.cc.h b/src/opt/hdf5/include/h5_table.cc.h
index 7f82327..c148ad1 100644
--- a/src/opt/hdf5/include/h5_table.cc.h
+++ b/src/opt/hdf5/include/h5_table.cc.h
@@ -9,14 +9,16 @@ namespace CNORXZ
 {
     namespace hdf5
     {
+	template <typename... Ts>
 	template <class F>
-	decltype(auto) iterRecords(F&& f) const
+	decltype(auto) STable<Ts...>::iterRecords(F&& f) const
 	{
-
+	    CXZ_ERROR("not implemented");
+	    return f(0);
 	}
 
 	template <typename... Ts>
-	STabel<Ts...>::STabel(const String& name, const ContentBase* _parent, const RangePtr& fields) :
+	STable<Ts...>::STable(const String& name, const ContentBase* _parent, const RangePtr& fields) :
 	    Table(name, _parent)
 	{
 	    constexpr SizeT N = sizeof...(Ts);
@@ -27,35 +29,36 @@ namespace CNORXZ
 	    CXZ_ASSERT(mFields->size() == sizeof...(Ts), "expected tuple of size = " << mFields->size()
 		       << ", got: " << sizeof...(Ts));
 
+	    Tuple<Ts...> x;
 	    if(mRecords == nullptr) {
 		auto mOffsets = MArray<SizeT>( mFields, iter<0,N>
-		    ( [&](auto i) { return &std::get<i>(t) - &t; },
+		    ( [&](auto i) { return &std::get<i>(x) - &x; },
 		      [](const auto&... e) { return Vector<SizeT>({e...}); }) );
 		auto mSizes = MArray<SizeT>( mFields, iter<0,N>
-		    ( [&](auto i) { return sizeof(std::get<i>(t)); },
+		    ( [&](auto i) { return sizeof(std::get<i>(x)); },
 		      [](const auto&... e) { return Vector<SizeT>({e...}); }) );
 		auto mTypes = MArray<hid_t>( mFields, iter<0,N>
-		    ( [&](auto i) { return getTypeId(std::get<i>(t)); },
+		    ( [&](auto i) { return getTypeId(std::get<i>(x)); },
 		      [](const auto&... e) { return Vector<hid_t>({e...}); }) );
 	    }
 	    else {
 		iter<0,N>( [&](auto i) { CXZ_ASSERT
-			    ( &std::get<i>(t) - &t == mOffsets.data()[i],
-			      "wrong offset for field " << i << ": " << &std::get<i>(t) - &t
+			    ( &std::get<i>(x) - &x == mOffsets.data()[i],
+			      "wrong offset for field " << i << ": " << &std::get<i>(x) - &x
 			      << " vs " << mOffsets.data()[i] ); }, NoF{} );
 		iter<0,N>( [&](auto i) { CXZ_ASSERT
-			    ( sizeof(std::get<i>(t)) == mSizes.data()[i],
-			      "wrong size for field " << i << ": " << sizeof(std::get<i>(t))
+			    ( sizeof(std::get<i>(x)) == mSizes.data()[i],
+			      "wrong size for field " << i << ": " << sizeof(std::get<i>(x))
 			      << " vs " << mSizes.data()[i] ); }, NoF{} );
 		iter<0,N>( [&](auto i) { CXZ_ASSERT
-			    ( getTypeId(std::get<i>(t)) == mTypes.data()[i],
-			      "wrong type for field " << i << ": " << getTypeId(std::get<i>(t))
+			    ( getTypeId(std::get<i>(x)) == mTypes.data()[i],
+			      "wrong type for field " << i << ": " << getTypeId(std::get<i>(x))
 			      << " vs " << mTypes.data()[i] ); }, NoF{} );
 	    }
 	}
 
 	template <typename... Ts>
-	STabel& STabel<Ts...>::appendRecord(const Tuple<Ts...>& t)
+	STable<Ts...>& STable<Ts...>::appendRecord(const Tuple<Ts...>& t)
 	{
 	    RangePtr appr = CRangeFactory(1).create();
 	    if(mRecords == nullptr){
diff --git a/src/opt/hdf5/include/h5_table.h b/src/opt/hdf5/include/h5_table.h
index e105974..cb113dc 100644
--- a/src/opt/hdf5/include/h5_table.h
+++ b/src/opt/hdf5/include/h5_table.h
@@ -37,14 +37,14 @@ namespace CNORXZ
 	};
 
 	template <typename... Ts>
-	class STabel : public Table
+	class STable : public Table
 	{
 	public:
-	    DEFAULT_MEMBERS(STabel);
-	    STabel(const String& name, const ContentBase* _parent, const RangePtr& fields);
+	    DEFAULT_MEMBERS(STable);
+	    STable(const String& name, const ContentBase* _parent, const RangePtr& fields);
 
-	    Table& appendRecord(const Tuple<Ts...>& t);
-	    Table& appendRecord(const MArray<Tuple<Ts...>>& t);
+	    STable& appendRecord(const Tuple<Ts...>& t);
+	    STable& appendRecord(const MArray<Tuple<Ts...>>& t);
 	    
 	    template <class F>
 	    decltype(auto) iterRecords(F&& f) const;
diff --git a/src/opt/hdf5/include/h5_types.cc.h b/src/opt/hdf5/include/h5_types.cc.h
index ca02f4b..81784f1 100644
--- a/src/opt/hdf5/include/h5_types.cc.h
+++ b/src/opt/hdf5/include/h5_types.cc.h
@@ -6,22 +6,38 @@ namespace CNORXZ
 {
     namespace hdf5
     {
-	template <typename T, SizeT N>
-	inline hid_t TypeId<Arr<T,N>>::get(Arr<T,N> x)
+	template <typename T>
+	inline hid_t TypeId<T>::get()
 	{
-	    static hid_t arrtype = H5Tarray_create2(getTypeId(x[0]), 1, N);
+	    return 0;
+	}
+	
+	inline hid_t TypeId<SizeT>::get()
+	{
+	    return H5T_NATIVE_ULONG;
+	}
+
+	inline hid_t TypeId<Int>::get()
+	{
+	    return H5T_NATIVE_INT;
+	}
+
+	inline hid_t TypeId<Double>::get()
+	{
+	    return H5T_NATIVE_DOUBLE;
+	}
+
+	template <typename T, SizeT N>
+	inline hid_t TypeId<Arr<T,N>>::get()
+	{
+	    static hid_t arrtype = H5Tarray_create2(TypeId<T>::get(), 1, N);
 	    return arrtype;
 	}
 
 	template <typename T>
 	hid_t getTypeId(T x)
 	{
-	    if constexpr (TypeIsNative<T>::value){
-		return NativeTypeId<T>::value;
-	    }
-	    else {
-		return TypeId<T>::get(x);
-	    }
+	    return TypeId<T>::get();
 	}
 
     }
diff --git a/src/opt/hdf5/include/h5_types.h b/src/opt/hdf5/include/h5_types.h
index 14b69cf..7ecc4bf 100644
--- a/src/opt/hdf5/include/h5_types.h
+++ b/src/opt/hdf5/include/h5_types.h
@@ -6,44 +6,22 @@ namespace CNORXZ
 {
     namespace hdf5
     {
-	/********************
-	 *   TypeIsNative   *
-	 ********************/
-	
-	template <typename T>
-	struct TypeIsNative { static constexpr bool value = false; };
-
-	template <>
-	struct TypeIsNative<SizeT> { static constexpr bool value = true; };
-
-	template <typename T>
-	struct TypeIsNative<Int> { static constexpr bool value = true; };
-
-	template <typename T>
-	struct TypeIsNative<Double> { static constexpr bool value = true; };
-
-	/********************
-	 *   NativeTypeId   *
-	 ********************/
-
-	template <typename T>
-	struct NativeTypeId { static constexpr hid_t value = 0; };
-
-	template <>
-	struct NativeTypeId<SizeT> { static constexpr hid_t value = H5T_NATIVE_ULONG; };
-	
-	template <>
-	struct NativeTypeId<Int> { static constexpr hid_t value = H5T_NATIVE_INT; };
-
-	template <>
-	struct NativeTypeId<Double> { static constexpr hid_t value = H5T_NATIVE_DOUBLE; };
 
 	/**************
 	 *   TypeId   *
 	 **************/
  
 	template <typename T>
-	struct TypeId<T> { static inline hid_t get() { return 0; } };
+	struct TypeId { static inline hid_t get(); };
+
+	template <>
+	struct TypeId<SizeT> { static inline hid_t get(); };
+	
+	template <>
+	struct TypeId<Int> { static inline hid_t get(); };
+
+	template <>
+	struct TypeId<Double> { static inline hid_t get(); };
 
 	template <typename T, SizeT N>
 	struct TypeId<Arr<T,N>> { static inline hid_t get(); };
diff --git a/src/opt/hdf5/lib/h5_table.cc b/src/opt/hdf5/lib/h5_table.cc
index c60262c..8ecd4dd 100644
--- a/src/opt/hdf5/lib/h5_table.cc
+++ b/src/opt/hdf5/lib/h5_table.cc
@@ -9,7 +9,7 @@ namespace CNORXZ
 	Table::Table(const String& name, const ContentBase* _parent) :
 	    ContentBase(name, _parent)
 	{
-	    if(H5Lexists_by_name(mParent->id(), mName.c_str(), H5P_DEFAULT)){
+	    if(H5Lexists(mParent->id(), mName.c_str(), H5P_DEFAULT)){
 		hsize_t nfields = 0;
 		hsize_t nrecords = 0;
 		H5TBget_table_info(mParent->id(), mName.c_str(), &nfields, &nrecords);