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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* All rights reserved. *
* *
* This file is part of HDF5. The full HDF5 copyright notice, including *
* terms governing use, modification, and redistribution, is contained in *
* the COPYING file, which can be found at the root of the source code *
* distribution tree, or in https://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <iostream>
#include <string>
#include "H5Include.h"
#include "H5Exception.h"
#include "H5IdComponent.h"
#include "H5PropList.h"
#include "H5FaccProp.h"
#include "H5FcreatProp.h"
#include "H5OcreatProp.h"
#include "H5DcreatProp.h"
#include "H5DxferProp.h"
#include "H5LcreatProp.h"
#include "H5LaccProp.h"
#include "H5DaccProp.h"
#include "H5Location.h"
#include "H5Object.h"
#include "H5AbstractDs.h"
#include "H5DataSpace.h"
#include "H5DataSet.h"
#include "H5CommonFG.h"
#include "H5Attribute.h"
#include "H5Group.h"
#include "H5File.h"
#include "H5Alltypes.h"
namespace H5 {
using std::cerr;
using std::endl;
//--------------------------------------------------------------------------
// Function: Group default constructor
///\brief Default constructor: creates a stub Group.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Group::Group() : H5Object(), CommonFG(), id(H5I_INVALID_HID)
{
}
//--------------------------------------------------------------------------
// Function: Group copy constructor
///\brief Copy constructor: same HDF5 object as \a original
///\param original - IN: Original group to copy
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Group::Group(const Group &original) : H5Object(), CommonFG(), id(original.id)
{
incRefCount(); // increment number of references to this id
}
//--------------------------------------------------------------------------
// Function: Group::closeObjId
///\brief Closes an object, which was opened with Group::getObjId
///
///\exception H5::FileIException or H5::GroupIException
// Programmer Binh-Minh Ribler - March, 2017
//--------------------------------------------------------------------------
void
Group::closeObjId(hid_t obj_id) const
{
herr_t ret_value = H5Oclose(obj_id);
if (ret_value < 0) {
throwException("Group::closeObjId", "H5Oclose failed");
}
}
//--------------------------------------------------------------------------
// Function: Group::getLocId
// Purpose: Get the id of this group
// Programmer Binh-Minh Ribler - 2000
// Description
// This function is a redefinition of CommonFG::getLocId. It
// is used by CommonFG member functions to get the file id.
// Deprecated:
// Aug 18, 2016 -BMR
// After HDFFV-9920, the Group's methods can use getId() and
// getLocId() is kept for backward compatibility.
//--------------------------------------------------------------------------
hid_t
Group::getLocId() const
{
return (getId());
}
//--------------------------------------------------------------------------
// Function: Group overloaded constructor
///\brief Creates a Group object using the id of an existing group.
///\param existing_id - IN: Id of an existing group
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Group::Group(const hid_t existing_id) : H5Object(), CommonFG(), id(existing_id)
{
incRefCount(); // increment number of references to this id
}
//--------------------------------------------------------------------------
// Function: Group overload constructor - dereference
///\brief Given a reference, ref, to an hdf5 group, creates a Group object
///\param loc - IN: Specifying location referenced object is in
///\param ref - IN: Reference pointer
///\param ref_type - IN: Reference type - default to H5R_OBJECT
///\param plist - IN: Property list - default to PropList::DEFAULT
///\exception H5::ReferenceException
///\par Description
/// \c obj can be DataSet, Group, or named DataType, that
/// is a datatype that has been named by DataType::commit.
// Programmer Binh-Minh Ribler - Oct, 2006
//--------------------------------------------------------------------------
Group::Group(const H5Location &loc, const void *ref, H5R_type_t ref_type, const PropList &plist)
: H5Object(), CommonFG(), id(H5I_INVALID_HID)
{
id = H5Location::p_dereference(loc.getId(), ref, ref_type, plist, "constructor - by dereference");
}
//--------------------------------------------------------------------------
// Function: Group::getNumObjs
///\brief Returns the number of objects in this group.
///\return Number of objects
///\exception H5::FileIException or H5::GroupIException
// Programmer Binh-Minh Ribler - January, 2003
//--------------------------------------------------------------------------
hsize_t
Group::getNumObjs() const
{
H5G_info_t ginfo; // Group information
herr_t ret_value = H5Gget_info(getId(), &ginfo);
if (ret_value < 0)
throwException("getNumObjs", "H5Gget_info failed");
return (ginfo.nlinks);
}
//--------------------------------------------------------------------------
// Function: Group::getObjId
///\brief Opens an object via object header.
///\param obj_name - IN: Path to the object
///\param plist - IN: Access property list for the link pointing to
/// the object
///\exception H5::FileIException or H5::GroupIException
///\par Description
/// This function opens an object in a group or file, using
/// H5Oopen. Thus, an object can be opened without knowing
/// the object's type.
// Programmer Binh-Minh Ribler - March, 2017
//--------------------------------------------------------------------------
hid_t
Group::getObjId(const char *obj_name, const PropList &plist) const
{
hid_t ret_value = H5Oopen(getId(), obj_name, plist.getId());
if (ret_value < 0) {
throwException("Group::getObjId", "H5Oopen failed");
}
return (ret_value);
}
//--------------------------------------------------------------------------
// Function: Group::getObjId
///\brief This is an overloaded member function, provided for convenience.
/// It takes a reference to a \c H5std_string for the object's name.
///\param obj_name - IN: Path to the object
///\param plist - IN: Access property list for the link pointing to
/// the object
///\exception H5::FileIException or H5::GroupIException
// Programmer Binh-Minh Ribler - March, 2017
//--------------------------------------------------------------------------
hid_t
Group::getObjId(const H5std_string &obj_name, const PropList &plist) const
{
return (getObjId(obj_name.c_str(), plist));
}
//--------------------------------------------------------------------------
// Function: Group::getId
///\brief Get the id of this group
///\return Group identifier
// Modification:
// May 2008 - BMR
// Class hierarchy is revised to address bugzilla 1068. Class
// AbstractDS and Attribute are moved out of H5Object. In
// addition, member IdComponent::id is moved into subclasses, and
// IdComponent::getId now becomes pure virtual function.
// Programmer Binh-Minh Ribler - May, 2008
//--------------------------------------------------------------------------
hid_t
Group::getId() const
{
return (id);
}
#ifndef DOXYGEN_SHOULD_SKIP_THIS
//--------------------------------------------------------------------------
// Function: Group::p_setId
///\brief Sets the identifier of this object to a new value.
///
///\exception H5::IdComponentException when the attempt to close the HDF5
/// object fails
// Description:
// The underlying reference counting in the C library ensures
// that the current valid id of this object is properly closed.
// Then the object's id is reset to the new id.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void
Group::p_setId(const hid_t new_id)
{
// handling references to this old id
try {
close();
}
catch (Exception &close_error) {
throwException("Group::p_setId", close_error.getDetailMsg());
}
// reset object's id to the given id
id = new_id;
}
#endif // DOXYGEN_SHOULD_SKIP_THIS
//--------------------------------------------------------------------------
// Function: Group::close
///\brief Closes this group.
///
///\exception H5::GroupIException
// Programmer Binh-Minh Ribler - Mar 9, 2005
//--------------------------------------------------------------------------
void
Group::close()
{
if (p_valid_id(id)) {
herr_t ret_value = H5Gclose(id);
if (ret_value < 0) {
throwException("Group::close", "H5Gclose failed");
}
// reset the id
id = H5I_INVALID_HID;
}
}
//--------------------------------------------------------------------------
// Function: Group::throwException
///\brief Throws H5::GroupIException.
///\param func_name - Name of the function where failure occurs
///\param msg - Message describing the failure
///\exception H5::GroupIException
// Description
// This function is also used in H5Location's methods so that
// proper exception can be thrown for file or group. The
// "Group::" will be inserted to indicate the function called is
// an implementation of Group.
// Programmer Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void
Group::throwException(const H5std_string &func_name, const H5std_string &msg) const
{
H5std_string full_name = func_name;
full_name.insert(0, "Group::");
throw GroupIException(full_name, msg);
}
//--------------------------------------------------------------------------
// Function: Group destructor
///\brief Properly terminates access to this group.
// Programmer Binh-Minh Ribler - 2000
// Modification
// - Replaced resetIdComponent() with decRefCount() to use C
// library ID reference counting mechanism - BMR, Feb 20, 2005
// - Replaced decRefCount with close() to let the C library
// handle the reference counting - BMR, Jun 1, 2006
//--------------------------------------------------------------------------
Group::~Group()
{
try {
close();
}
catch (Exception &close_error) {
cerr << "Group::~Group - " << close_error.getDetailMsg() << endl;
}
}
} // namespace H5
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