hdf5: virtual function exists() in ContentBase + hdf5 header documentation
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This commit is contained in:
Christian Zimmermann 2024-02-02 14:51:51 +01:00
parent 1f7ebae61b
commit c46d9b1772
17 changed files with 241 additions and 99 deletions

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@ -6,7 +6,7 @@
This file contains the declaration of all library types This file contains the declaration of all library types
Copyright (c) 2022 Christian Zimmermann. All rights reserved. Copyright (c) 2024 Christian Zimmermann. All rights reserved.
Mail: chizeta@f3l.de Mail: chizeta@f3l.de
**/ **/
@ -28,9 +28,9 @@
namespace CNORXZ namespace CNORXZ
{ {
/********************** /*====================+
* standard types * | standard types |
**********************/ =====================*/
typedef std::intptr_t PtrId; typedef std::intptr_t PtrId;
typedef int32_t Int; typedef int32_t Int;
@ -80,9 +80,9 @@ namespace CNORXZ
template <SizeT N> template <SizeT N>
using CSizeT = std::integral_constant<SizeT,N>; using CSizeT = std::integral_constant<SizeT,N>;
/********************* /*===================+
* library types * | library types |
*********************/ +===================*/
/*** /***
Naming Prefixes: Naming Prefixes:
@ -302,9 +302,9 @@ namespace CNORXZ
template <class CXpr> template <class CXpr>
class Contraction; class Contraction;
/********************* /*===================+
* derived types * | derived types |
*********************/ +===================*/
template <typename T> template <typename T>
using Vector = std::vector<T,Allocator<T>>; using Vector = std::vector<T,Allocator<T>>;

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@ -1,3 +1,13 @@
// -*- C++ -*-
/**
@file opt/hdf5/include/h5_content_base.cc.h
@brief Implementation of template member functions of ContentBase
Copyright (c) 2024 Christian Zimmermann. All rights reserved.
Mail: chizeta@f3l.de
**/
#ifndef __cxz_h5_content_base_cc_h__ #ifndef __cxz_h5_content_base_cc_h__
#define __cxz_h5_content_base_cc_h__ #define __cxz_h5_content_base_cc_h__

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@ -81,6 +81,11 @@ namespace CNORXZ
*/ */
virtual String filename() const = 0; virtual String filename() const = 0;
/** Check if group exists in the parent object.
@return True if object exists, else false.
*/
virtual bool exists() const = 0;
/** Get object name. /** Get object name.
@return The name of this object. @return The name of this object.
*/ */

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@ -1,3 +1,13 @@
// -*- C++ -*-
/**
@file opt/hdf5/include/h5_dataset.cc.h
@brief Implementation of template member functions of Dataset and SDataset.
Copyright (c) 2024 Christian Zimmermann. All rights reserved.
Mail: chizeta@f3l.de
**/
#ifndef __cxz_h5_dataset_cc_h__ #ifndef __cxz_h5_dataset_cc_h__
#define __cxz_h5_dataset_cc_h__ #define __cxz_h5_dataset_cc_h__

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@ -1,3 +1,13 @@
// -*- C++ -*-
/**
@file opt/hdf5/include/h5_dataset.h
@brief Dataset declaration.
Copyright (c) 2024 Christian Zimmermann. All rights reserved.
Mail: chizeta@f3l.de
**/
#ifndef __cxz_h5_dataset_h__ #ifndef __cxz_h5_dataset_h__
#define __cxz_h5_dataset_h__ #define __cxz_h5_dataset_h__
@ -9,11 +19,21 @@ namespace CNORXZ
{ {
namespace hdf5 namespace hdf5
{ {
/** ****
Class to handle hdf5 datasets.
*/
class Dataset : public ContentBase class Dataset : public ContentBase
{ {
public: public:
DEFAULT_MEMBERS(Dataset); DEFAULT_MEMBERS(Dataset); /**< Default constructors and assignments. */
/** Construct the class.
@param _name Dataset name.
@param _parent Parent content object.
*/
Dataset(const String& name, const ContentBase* _parent); Dataset(const String& name, const ContentBase* _parent);
/** Destructor. Release all involved hdf5 ids. */
~Dataset(); ~Dataset();
virtual ContentType type() const override final; virtual ContentType type() const override final;
@ -22,32 +42,59 @@ namespace CNORXZ
virtual Dataset& close() override final; virtual Dataset& close() override final;
virtual String path() const override final; virtual String path() const override final;
virtual String filename() const override final; virtual String filename() const override final;
virtual bool exists() const override final;
bool exists() const; /** Initalize the dataset.
@param dataRange A potentially multi-dimensional range characterizing the dataset.
@param type Data type id.
*/
Dataset& init(const RangePtr& dataRange, hid_t type); Dataset& init(const RangePtr& dataRange, hid_t type);
/** Initalize the dataset.
@param data Array containing the dataset.
*/
template <typename T> template <typename T>
Dataset& init(const ArrayBase<T>& data); Dataset& init(const ArrayBase<T>& data);
/** Get the data range.
@return Pointer to the range.
*/
const RangePtr& dataRange() const; const RangePtr& dataRange() const;
protected: protected:
RangePtr mDataRange; RangePtr mDataRange; /**< The data range. */
hid_t mType; hid_t mType; /**< The data type identifier. */
hid_t mFilespace; hid_t mFilespace; /**< The hdf5 file space identifier. */
}; };
/** ****
Class to handle hdf5 datasets, the value type is known at compile time.
@tparam T Dataset value type.
*/
template <typename T> template <typename T>
class SDataset : public Dataset class SDataset : public Dataset
{ {
public: public:
DEFAULT_MEMBERS(SDataset); DEFAULT_MEMBERS(SDataset); /**< Default constructors and assignments. */
/** Construct the class.
@param _name Dataset name.
@param _parent Parent content object.
*/
SDataset(const String& name, const ContentBase* _parent); SDataset(const String& name, const ContentBase* _parent);
/** Read the dataset.
@return Array containing the dataset values.
*/
MArray<T> read() const; MArray<T> read() const;
/** Read a given subset of the dataset.
The subset needs to be hypercubic.
@param beg Index indicating the begin edge of the hypercube.
@param end Index indicating the end edge of the hypercube (inclusive).
@return Array containing the dataset values.
*/
template <class I, typename M> template <class I, typename M>
MArray<T> read(const IndexInterface<I,M>& beg, const IndexInterface<I,M>& end) const; MArray<T> read(const IndexInterface<I,M>& beg, const IndexInterface<I,M>& end) const;

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@ -47,9 +47,13 @@ namespace CNORXZ
virtual File& close() override final; virtual File& close() override final;
virtual String path() const override final; virtual String path() const override final;
virtual String filename() const override final; virtual String filename() const override final;
virtual bool exists() const override final;
/** Check if handled file is in hdf5 format.
@return True if file is in hdf5 format, else false.
*/
bool ishdf5() const;
virtual Int exists() const override final;
private: private:
bool mRo = true; bool mRo = true;
}; };

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@ -1,3 +1,13 @@
// -*- C++ -*-
/**
@file opt/hdf5/include/h5_group.cc.h
@brief Implementation of template member functions of Group.
Copyright (c) 2024 Christian Zimmermann. All rights reserved.
Mail: chizeta@f3l.de
**/
#ifndef __cxz_h5_group_cc_h__ #ifndef __cxz_h5_group_cc_h__
#define __cxz_h5_group_cc_h__ #define __cxz_h5_group_cc_h__
@ -9,6 +19,26 @@ namespace CNORXZ
{ {
namespace hdf5 namespace hdf5
{ {
template <SizeT I, typename... Ts>
constexpr const auto& tget(const Tuple<Ts...>& t)
{
return std::get<sizeof...(Ts)-I-1>(t);
}
template <SizeT I, typename... Ts>
constexpr auto& tget(Tuple<Ts...>& t)
{
return std::get<sizeof...(Ts)-I-1>(t);
}
template <SizeT N, typename... Ts>
SizeT getTupleOffset(const Tuple<Ts...>& t, CSizeT<N> i)
{
const PtrId beg = reinterpret_cast<PtrId>(&t);
const PtrId pos = reinterpret_cast<PtrId>(&tget<i>(t));
return pos - beg;
}
template <typename... Ts> template <typename... Ts>
Sptr<STable<Ts...>> Group::getTable(const String& name, Tuple<Ts...> proto) Sptr<STable<Ts...>> Group::getTable(const String& name, Tuple<Ts...> proto)
{ {

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@ -42,11 +42,7 @@ namespace CNORXZ
virtual Group& close() override; virtual Group& close() override;
virtual String path() const override; virtual String path() const override;
virtual String filename() const override; virtual String filename() const override;
virtual bool exists() const override;
/** Check if group exists in the parent object.
@return 1 if group exists, 0 if not, -1 if an error occured.
*/
virtual Int exists() const; // TODO: virtual function of base class
/** Get object contained by this group. /** Get object contained by this group.
@param name Object name. @param name Object name.

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@ -1,3 +1,13 @@
// -*- C++ -*-
/**
@file opt/hdf5/include/h5_table.cc.h
@brief Implementation of template member functions of Table and STable.
Copyright (c) 2024 Christian Zimmermann. All rights reserved.
Mail: chizeta@f3l.de
**/
#ifndef __cxz_h5_table_cc_h__ #ifndef __cxz_h5_table_cc_h__
#define __cxz_h5_table_cc_h__ #define __cxz_h5_table_cc_h__

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@ -44,6 +44,7 @@ namespace CNORXZ
virtual Table& close() override final; virtual Table& close() override final;
virtual String path() const override final; virtual String path() const override final;
virtual String filename() const override final; virtual String filename() const override final;
virtual bool exists() const override final;
/** Ininitialize table field names. /** Ininitialize table field names.
@param fnames Table field names. @param fnames Table field names.

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@ -1,3 +1,13 @@
// -*- C++ -*-
/**
@file opt/hdf5/include/h5_type_id.h
@brief TypeId template implementation.
Copyright (c) 2024 Christian Zimmermann. All rights reserved.
Mail: chizeta@f3l.de
**/
#ifndef __cxz_h5_type_id_cc_h__ #ifndef __cxz_h5_type_id_cc_h__
#define __cxz_h5_type_id_cc_h__ #define __cxz_h5_type_id_cc_h__
@ -8,37 +18,9 @@ namespace CNORXZ
{ {
namespace hdf5 namespace hdf5
{ {
template <typename... Ts> /*============+
decltype(auto) reverseTuple(const Tuple<Ts...>& t) | TypeId |
{ +============*/
return iter<0,sizeof...(Ts)>
( [&](auto i) { return tget<i>(t); },
[](const auto&... e) { return std::make_tuple(e...); } );
}
template <SizeT I, typename... Ts>
constexpr const auto& tget(const Tuple<Ts...>& t)
{
return std::get<sizeof...(Ts)-I-1>(t);
}
template <SizeT I, typename... Ts>
constexpr auto& tget(Tuple<Ts...>& t)
{
return std::get<sizeof...(Ts)-I-1>(t);
}
template <SizeT N, typename... Ts>
SizeT getTupleOffset(const Tuple<Ts...>& t, CSizeT<N> i)
{
const PtrId beg = reinterpret_cast<PtrId>(&t);
const PtrId pos = reinterpret_cast<PtrId>(&tget<i>(t));
return pos - beg;
}
/**************
* TypeId *
**************/
template <typename T> template <typename T>
inline hid_t TypeId<T>::get() inline hid_t TypeId<T>::get()
@ -68,9 +50,9 @@ namespace CNORXZ
return arrtype; return arrtype;
} }
/***************** /*===============+
* getTypeId * | getTypeId |
*****************/ +===============*/
template <typename T> template <typename T>
hid_t getTypeId(T x) hid_t getTypeId(T x)

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@ -1,3 +1,13 @@
// -*- C++ -*-
/**
@file opt/hdf5/include/h5_type_id.h
@brief TypeId template declaration.
Copyright (c) 2024 Christian Zimmermann. All rights reserved.
Mail: chizeta@f3l.de
**/
#ifndef __cxz_h5_type_id_h__ #ifndef __cxz_h5_type_id_h__
#define __cxz_h5_type_id_h__ #define __cxz_h5_type_id_h__
@ -8,43 +18,57 @@ namespace CNORXZ
{ {
namespace hdf5 namespace hdf5
{ {
template <typename... Ts> /** ****
decltype(auto) reverseTuple(const Tuple<Ts...>& t); Get a valid hdf5 id for a given type.
Return 0 if not implemented.
template <typename... Ts> @tparam T The type.
using RTuple = typename std::remove_reference<decltype(reverseTuple(Tuple<Ts...>()))>::type; */
template <SizeT I, typename... Ts>
constexpr const auto& tget(const Tuple<Ts...>& t);
template <SizeT I, typename... Ts>
constexpr auto& tget(Tuple<Ts...>& t);
template <SizeT N, typename... Ts>
SizeT getTupleOffset(const Tuple<Ts...>& t, CSizeT<N> i);
/**************
* TypeId *
**************/
template <typename T> template <typename T>
struct TypeId { static inline hid_t get(); }; struct TypeId
{
/** Get the type id. */
static inline hid_t get();
};
/** Specialization of TypeId for SizeT. */
template <> template <>
struct TypeId<SizeT> { static inline hid_t get(); }; struct TypeId<SizeT>
{
/** Get the type id for SizeT. */
static inline hid_t get();
};
/** Specialization of TypeId for Int. */
template <> template <>
struct TypeId<Int> { static inline hid_t get(); }; struct TypeId<Int>
{
/** Get the type id for Int. */
static inline hid_t get();
};
/** Specialization of TypeId for Double. */
template <> template <>
struct TypeId<Double> { static inline hid_t get(); }; struct TypeId<Double>
{
/** Get the type id for Double. */
static inline hid_t get();
};
/** Specialization of TypeId for an array
@tparam T Element type.
@tparam N Array size.
*/
template <typename T, SizeT N> template <typename T, SizeT N>
struct TypeId<Arr<T,N>> { static inline hid_t get(); }; struct TypeId<Arr<T,N>>
{
/***************** /** Get the type id for the given array. */
* getTypeId * static inline hid_t get();
*****************/ };
/** Wrapper function for TypeId::get()
@param Variable of given type.
@return A type id of the input variable's type.
*/
template <typename T> template <typename T>
hid_t getTypeId(T x); hid_t getTypeId(T x);
} }

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@ -1,3 +1,15 @@
// -*- C++ -*-
/**
@file opt/hdf5/include/types.h
@brief Declaration of hdf5 related library types
This file contains the declaration of all hdf5 related library types
Copyright (c) 2024 Christian Zimmermann. All rights reserved.
Mail: chizeta@f3l.de
**/
#ifndef __h5_types_h__ #ifndef __h5_types_h__
#define __h5_types_h__ #define __h5_types_h__

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@ -33,7 +33,7 @@ namespace CNORXZ
} }
Int ex = this->exists(); Int ex = this->exists();
const String fn = this->filename(); const String fn = this->filename();
CXZ_ASSERT( ex != 2, "tried to open non-h5 file '" << fn << "'" ); CXZ_ASSERT( ishdf5(), "tried to open non-h5 file '" << fn << "'" );
if(mRo){ if(mRo){
CXZ_ASSERT( ex == 1, "could not open file as read-only: '" CXZ_ASSERT( ex == 1, "could not open file as read-only: '"
<< fn << "' does not exist'"); << fn << "' does not exist'");
@ -79,21 +79,25 @@ namespace CNORXZ
return name(); return name();
} }
Int File::exists() const bool File::exists() const
{ {
Int ex = 0; bool ex = false;
std::ifstream fs(this->filename().c_str(), std::ios_base::binary); std::ifstream fs(this->filename().c_str(), std::ios_base::binary);
if(fs.good()){ if(fs.good()){
ex = 1; // file exists ex = true; // file exists
} }
fs.close(); fs.close();
if(ex != 0){
if(H5Fis_hdf5(this->filename().c_str()) <= 0){
ex = 2; // file not in h5 format
}
}
return ex; return ex;
} }
bool File::ishdf5() const
{
if(exists()){
if(H5Fis_hdf5(this->filename().c_str()) <= 0){
return false;
}
}
return true; // a non-existing file can be created in hdf5 format
}
} }
} }

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@ -69,9 +69,9 @@ namespace CNORXZ
return String(); return String();
} }
Int Group::exists() const bool Group::exists() const
{ {
return H5Lexists(mParent->id(), mName.c_str(), H5P_DEFAULT) != 0 ? 1 : 0; return H5Lexists(mParent->id(), mName.c_str(), H5P_DEFAULT) != 0;
} }
const ContentPtr& Group::get(const String& name) const const ContentPtr& Group::get(const String& name) const

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@ -9,7 +9,7 @@ namespace CNORXZ
Table::Table(const String& name, const ContentBase* _parent) : Table::Table(const String& name, const ContentBase* _parent) :
ContentBase(name, _parent) ContentBase(name, _parent)
{ {
if(H5Lexists(mParent->id(), mName.c_str(), H5P_DEFAULT)){ if(exists()){
hsize_t nfields = 0; hsize_t nfields = 0;
hsize_t nrecords = 0; hsize_t nrecords = 0;
H5TBget_table_info(mParent->id(), mName.c_str(), &nfields, &nrecords); H5TBget_table_info(mParent->id(), mName.c_str(), &nfields, &nrecords);
@ -90,6 +90,13 @@ namespace CNORXZ
return mParent->filename(); return mParent->filename();
} }
bool Table::exists() const
{
htri_t x = H5Lexists(mParent->id(), mName.c_str(), H5P_DEFAULT);
VCHECK(x);
return x;
}
Table& Table::initFieldNames(const Vector<String>& fnames) Table& Table::initFieldNames(const Vector<String>& fnames)
{ {
CXZ_ASSERT(mFields == nullptr, "fields already initialized"); CXZ_ASSERT(mFields == nullptr, "fields already initialized");

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@ -58,7 +58,7 @@ namespace
CIndex j(fs); CIndex j(fs);
for(i = 0; i.lex() != rs->size(); ++i){ for(i = 0; i.lex() != rs->size(); ++i){
iter<0,3>( [&](auto jj) iter<0,3>( [&](auto jj)
{ j = jj; mTabD[i*j] = DType(tget<jj>(v[i.lex()])); }, NoF{} ); { j = jj; mTabD[i*j] = DType(std::get<3-jj-1>(v[i.lex()])); }, NoF{} );
} }
const SizeT ddim = 5; const SizeT ddim = 5;