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path: root/c++/src/H5Location.cpp
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * 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 files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
 * access to either file, you may request a copy from help@hdfgroup.org.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include <string>

#include "H5private.h"        // for HDmemset
#include "H5Include.h"
#include "H5Exception.h"
#include "H5IdComponent.h"
#include "H5DataSpace.h"
#include "H5PropList.h"
#include "H5FaccProp.h"
#include "H5FcreatProp.h"
#include "H5OcreatProp.h"
#include "H5DcreatProp.h"
#include "H5DxferProp.h"
#include "H5LaccProp.h"
#include "H5Location.h"
#include "H5Object.h"
#include "H5DataType.h"
#include "H5AbstractDs.h"
#include "H5DataSet.h"
#include "H5CommonFG.h"
#include "H5Group.h"
#include "H5File.h"

namespace H5 {

#ifndef DOXYGEN_SHOULD_SKIP_THIS
//--------------------------------------------------------------------------
// Function:    H5Location default constructor (protected)
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
H5Location::H5Location() : IdComponent() {}

//--------------------------------------------------------------------------
// Function:    H5Location overloaded constructor (protected)
// Purpose      Creates an H5Location object using the id of an existing HDF5
//              object.
// Parameters   object_id - IN: Id of an existing HDF5 object
// Programmer   Binh-Minh Ribler - 2000

// *** Deprecation warning ***
// This constructor is no longer appropriate because the data member "id" had
// been moved to the sub-classes.  It will be removed in 1.10 release.  If its
// removal does not raise any problems in 1.10, it will be removed from 1.8 in
// subsequent releases.
// Removed in 1.10.1 - Aug 2016
//--------------------------------------------------------------------------
// H5Location::H5Location(const hid_t object_id) : IdComponent() {}

//--------------------------------------------------------------------------
// Function:    H5Location copy constructor
// Purpose      This noop copy constructor is removed as a result of the data
//              member "id" being moved down to sub-classes. (Mar 2015)
///\param       original - IN: H5Location instance to copy
// Programmer   Binh-Minh Ribler - 2000
//
// *** Deprecation warning ***
// This constructor is no longer appropriate because the data member "id" had
// been moved to the sub-classes.  It is removed from 1.8.15 because it is
// a noop and it can be generated by the compiler if needed.
//--------------------------------------------------------------------------
// H5Location::H5Location(const H5Location& original) : IdComponent() {}

#endif // DOXYGEN_SHOULD_SKIP_THIS

//--------------------------------------------------------------------------
// Function:    H5Location::exists
///\brief       Checks if a link of a given name exists in a location
///\param       name - IN: Searched name
///\param       lapl - IN: Link access property list
///\exception   H5::LocationException
// Programmer   Binh-Minh Ribler - Nov, 2016
// Modification
//--------------------------------------------------------------------------
bool H5Location::exists(const char* name, const LinkAccPropList& lapl) const
{
    htri_t ret_value = H5Lexists(getId(), name, lapl.getId());
    if (ret_value > 0)
        return true;
    else if (ret_value == 0)
        return false;
    else // Raise exception when H5Lexists returns a negative value
    {
        throwException("exists", "H5Lexists failed");
    }
}

//--------------------------------------------------------------------------
// Function:    H5Location::exists
///\brief       Checks if a link of a given name exists in a location
///\param       name - IN: Searched name
///\param       lapl - IN: Link access property list
///\exception   H5::LocationException
// Programmer   Binh-Minh Ribler - Dec, 2016
// Modification
//--------------------------------------------------------------------------
bool H5Location::exists(const H5std_string& name, const LinkAccPropList& lapl) const
{
    return(exists(name.c_str(), lapl));
}

//--------------------------------------------------------------------------
// Function:    H5Location::flush
///\brief       Flushes all buffers associated with a location to disk.
///\param       scope - IN: Specifies the scope of the flushing action,
///             which can be either of these values:
///             \li \c H5F_SCOPE_GLOBAL - Flushes the entire virtual file
///             \li \c H5F_SCOPE_LOCAL - Flushes only the specified file
///\exception   H5::Exception
///\par Description
///             This location is used to identify the file to be flushed.
// Programmer   Binh-Minh Ribler - 2012
// Modification
//        Sep 2012 - BMR
//              Moved from H5File/H5Object
//--------------------------------------------------------------------------
void H5Location::flush(H5F_scope_t scope) const
{
    herr_t ret_value = H5Fflush(getId(), scope);
    if (ret_value < 0)
    {
        throw LocationException(inMemFunc("flush"), "H5Fflush failed");
    }
}

//--------------------------------------------------------------------------
// Function:    H5Location::getFileName
///\brief       Gets the name of the file, in which this HDF5 object belongs.
///\return      File name
///\exception   H5::LocationException
// Programmer   Binh-Minh Ribler - Jul, 2004
//--------------------------------------------------------------------------
H5std_string H5Location::getFileName() const
{
    try {
      return(p_get_file_name());
    }
    catch (LocationException& E) {
        throw FileIException(inMemFunc("getFileName"), E.getDetailMsg());
    }
}

//--------------------------------------------------------------------------
// Function:    H5Location::setComment
///\brief       Sets or resets the comment for an object specified by its name.
///\param       name  - IN: Name of the object
///\param       comment - IN: New comment
///\exception   H5::LocationException
///\par Description
///             If \a comment is an empty string or a null pointer, the comment
///             message is removed from the object.
///             Comments should be relatively short, null-terminated, ASCII
///             strings.  They can be attached to any object that has an
///             object header, e.g., data sets, groups, named data types,
///             and data spaces, but not symbolic links.
// Programmer   Binh-Minh Ribler - 2000 (moved from CommonFG, Sep 2013)
// Modification
//      2007: QAK modified to use H5O APIs; however the first parameter is
//              no longer just file or group, this function should be moved
//              to another class to accommodate attribute, dataset, and named
//              datatype. - BMR
//--------------------------------------------------------------------------
void H5Location::setComment(const char* name, const char* comment) const
{
    herr_t ret_value = H5Oset_comment_by_name(getId(), name, comment, H5P_DEFAULT);
    if (ret_value < 0)
        throw LocationException(inMemFunc("setComment"), "H5Oset_comment_by_name failed");
}

//--------------------------------------------------------------------------
// Function:    H5Location::setComment
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name and \a comment.
// Programmer   Binh-Minh Ribler - 2000 (moved from CommonFG, Sep 2013)
//--------------------------------------------------------------------------
void H5Location::setComment(const H5std_string& name, const H5std_string& comment) const
{
    setComment(name.c_str(), comment.c_str());
}

//--------------------------------------------------------------------------
// Function:    H5Location::setComment
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it doesn't take
///             an object name.
// Programmer   Binh-Minh Ribler - Sep 2013
// Modification
//--------------------------------------------------------------------------
void H5Location::setComment(const char* comment) const
{
    herr_t ret_value = H5Oset_comment_by_name(getId(), ".", comment, H5P_DEFAULT);
    if (ret_value < 0)
        throw LocationException(inMemFunc("setComment"), "H5Oset_comment_by_name failed");
}

//--------------------------------------------------------------------------
// Function:    H5Location::setComment
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a comment.
// Programmer   Binh-Minh Ribler - Sep 2013
//--------------------------------------------------------------------------
void H5Location::setComment(const H5std_string& comment) const
{
    setComment(comment.c_str());
}

//--------------------------------------------------------------------------
// Function:    H5Location::removeComment
///\brief       Removes the comment from an object specified by its name.
///\param       name  - IN: Name of the object
///\exception   H5::LocationException
// Programmer   Binh-Minh Ribler - May 2005 (moved from CommonFG, Sep 2013)
//      2007: QAK modified to use H5O APIs; however the first parameter is
//              no longer just file or group, this function should be moved
//              to another class to accommodate attribute, dataset, and named
//              datatype. - BMR
//--------------------------------------------------------------------------
void H5Location::removeComment(const char* name) const
{
    herr_t ret_value = H5Oset_comment_by_name(getId(), name, NULL, H5P_DEFAULT);
    if (ret_value < 0)
        throw LocationException(inMemFunc("removeComment"), "H5Oset_comment_by_name failed");
}

//--------------------------------------------------------------------------
// Function:    H5Location::removeComment
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - May 2005 (moved from CommonFG, Sep 2013)
//--------------------------------------------------------------------------
void H5Location::removeComment(const H5std_string& name) const
{
    removeComment (name.c_str());
}

//--------------------------------------------------------------------------
// Function:    H5Location::getComment
///\brief       Retrieves the comment for this location, returning its length.
///\param       name     - IN: Name of the object
///\param       buf_size - IN: Length of the comment to retrieve
///\param       comment  - OUT: Retrieved comment
///\return      Actual length of the comment
///\exception   H5::LocationException
///\par Description
///             This function retrieves \a buf_size characters of the comment
///             including the null terminator.  Thus, if the actual length
///             of the comment is more than buf_size-1, the retrieved comment
///             will be truncated to accommodate the null terminator.
// Programmer   Binh-Minh Ribler - Mar 2014
//--------------------------------------------------------------------------
ssize_t H5Location::getComment(const char* name, size_t buf_size, char* comment) const
{
    // H5Oget_comment_by_name will get buf_size chars of the comment including
    // the null terminator
    ssize_t comment_len;
    comment_len = H5Oget_comment_by_name(getId(), name, comment, buf_size, H5P_DEFAULT);

    // If H5Oget_comment_by_name returns a negative value, raise an exception
    if (comment_len < 0)
     {
        throw LocationException("H5Location::getComment", "H5Oget_comment_by_name failed");
    }
    // If the comment is longer than the provided buffer size, the C library
    // will not null terminate it
    if (static_cast<size_t>(comment_len) >= buf_size)
        comment[buf_size-1] = '\0';

    // Return the actual comment length, which might be different from buf_size
    return(comment_len);
}

//--------------------------------------------------------------------------
// Function:    H5Location::getComment
///\brief       Returns the comment as \a string for this location,
///             returning its length.
///\param       name     - IN: Name of the object
///\param       buf_size - IN: Length of the comment to retrieve, default to 0
///\return      Comment string
///\exception   H5::LocationException
// Programmer   Binh-Minh Ribler - 2000 (moved from CommonFG, Sep 2013)
//--------------------------------------------------------------------------
H5std_string H5Location::getComment(const char* name, size_t buf_size) const
{
    // Initialize string to "", so that if there is no comment, the returned
    // string will be empty
    H5std_string comment("");

    // Preliminary call to get the comment's length
    ssize_t comment_len = H5Oget_comment_by_name(getId(), name, NULL, (size_t)0, H5P_DEFAULT);

    // If H5Oget_comment_by_name returns a negative value, raise an exception
    if (comment_len < 0)
     {
        throw LocationException("H5Location::getComment", "H5Oget_comment_by_name failed");
    }

    // If comment exists, calls C routine again to get it
    else if (comment_len > 0)
     {
        size_t tmp_len = buf_size;

        // If buffer size is not provided, use comment length
        if (tmp_len == 0)
            tmp_len = comment_len;

        // Temporary buffer for char* comment
        char* comment_C = new char[tmp_len+1];
        HDmemset(comment_C, 0, tmp_len+1); // clear buffer

        // Used overloaded function
        ssize_t temp_len = getComment(name, tmp_len+1, comment_C);
        if (temp_len < 0)
        {
            delete []comment_C;
            throw LocationException("H5Location::getComment", "H5Oget_comment_by_name failed");
        }

        // Convert the C comment to return
        comment = comment_C;

        // Clean up resource
        delete []comment_C;
    }

    // Return the string comment
    return(comment);
}

//--------------------------------------------------------------------------
// Function:    H5Location::getComment
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - 2000 (moved from CommonFG, Sep 2013)
//--------------------------------------------------------------------------
H5std_string H5Location::getComment(const H5std_string& name, size_t buf_size) const
{
    return(getComment(name.c_str(), buf_size));
}
#ifndef DOXYGEN_SHOULD_SKIP_THIS

//--------------------------------------------------------------------------
// Function:    H5Location::p_reference (protected)
// Purpose      Creates a reference to an HDF5 object or a dataset region.
// Parameters
//              name - IN: Name of the object to be referenced
//              dataspace - IN: Dataspace with selection
//              ref_type - IN: Type of reference; default to \c H5R_DATASET_REGION
// Exception    H5::ReferenceException
// Programmer   Binh-Minh Ribler - May, 2004
//--------------------------------------------------------------------------
void H5Location::p_reference(void* ref, const char* name, hid_t space_id, H5R_type_t ref_type) const
{
    herr_t ret_value = H5Rcreate(ref, getId(), name, ref_type, space_id);
    if (ret_value < 0)
    {
        throw ReferenceException(inMemFunc("reference"), "H5Rcreate failed");
    }
}

#endif // DOXYGEN_SHOULD_SKIP_THIS

//--------------------------------------------------------------------------
// Function:    H5Location::reference
///\brief       Creates a reference to an HDF5 object or a dataset region.
///\param       ref - IN: Reference pointer
///\param       name - IN: Name of the object to be referenced
///\param       dataspace - IN: Dataspace with selection
///\param       ref_type - IN: Type of reference to query, valid values are:
///             \li \c H5R_OBJECT         - Reference is an object reference.
///             \li \c H5R_DATASET_REGION - Reference is a dataset region
///                     reference. (default)
///\exception   H5::ReferenceException
///\note        This method is more suitable for a dataset region reference.
// Programmer   Binh-Minh Ribler - May, 2004
//--------------------------------------------------------------------------
void H5Location::reference(void* ref, const char* name, const DataSpace& dataspace, H5R_type_t ref_type) const
{
    try {
        p_reference(ref, name, dataspace.getId(), ref_type);
    }
    catch (ReferenceException& E) {
        throw ReferenceException(inMemFunc("reference"), E.getDetailMsg());
    }
}

//--------------------------------------------------------------------------
// Function:    H5Location::reference
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
///\param       ref - IN: Reference pointer
///\param       name - IN: Name of the object to be referenced
///\param       dataspace - IN: Dataspace with selection
///\param       ref_type - IN: Type of reference to query, valid values are:
///             \li \c H5R_OBJECT         - Reference is an object reference.
///             \li \c H5R_DATASET_REGION - Reference is a dataset region
///                     reference. (default)
///\exception   H5::ReferenceException
///\note        This method is more suitable for a dataset region reference.
// Programmer   Binh-Minh Ribler - May, 2004
//--------------------------------------------------------------------------
void H5Location::reference(void* ref, const H5std_string& name, const DataSpace& dataspace, H5R_type_t ref_type) const
{
    try {
        p_reference(ref, name.c_str(), dataspace.getId(), ref_type);
    }
    catch (ReferenceException& E) {
        throw ReferenceException(inMemFunc("reference"), E.getDetailMsg());
    }
}

//--------------------------------------------------------------------------
// Function:    H5Location::reference
///\brief       This is an overloaded function, provided for your convenience.
///             It differs from the above function in that it does not take
///             a DataSpace object and the reference type must be specified.
///\param       ref - IN: Reference pointer
///\param       name - IN: Name of the object to be referenced
///\param       ref_type - IN: Type of reference to query, valid values are:
///             \li \c H5R_OBJECT         - Reference is an object reference (default)
///             \li \c H5R_DATASET_REGION - Reference is a dataset region
///\exception   H5::ReferenceException
///\note        This method is more suitable for an object reference.
// Programmer   Binh-Minh Ribler - May, 2004
//--------------------------------------------------------------------------
void H5Location::reference(void* ref, const char* name, H5R_type_t ref_type) const
{
    try {
        p_reference(ref, name, -1, ref_type);
    }
    catch (ReferenceException& E) {
        throw ReferenceException(inMemFunc("reference"), E.getDetailMsg());
    }
}

//--------------------------------------------------------------------------
// Function:    H5Location::reference
///\brief       This is an overloaded function, provided for your convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for the object's name.
///\param       ref - IN: Reference pointer
///\param       name - IN: Name of the object to be referenced - \c H5std_string
///\param       ref_type - IN: Type of reference to query, valid values are:
///             \li \c H5R_OBJECT         - Reference is an object reference (default)
///             \li \c H5R_DATASET_REGION - Reference is a dataset region
///\note        This method is more suitable for an object reference.
// Programmer   Binh-Minh Ribler - May, 2004
//--------------------------------------------------------------------------
void H5Location::reference(void* ref, const H5std_string& name, H5R_type_t ref_type) const
{
   reference(ref, name.c_str(), ref_type);
}

#ifndef DOXYGEN_SHOULD_SKIP_THIS
//--------------------------------------------------------------------------
// Function:    H5Location::p_dereference (protected)
// Purpose      Dereference a ref into an hdf5 object.
// Parameters
//              loc_id - IN: An hdf5 identifier specifying the location of the
//                          referenced object
//              ref - IN: Reference pointer
//              ref_type - IN: Reference type
//              plist - IN: Property list - default to PropList::DEFAULT
//              from_func - IN: Name of the calling function
// Exception    H5::ReferenceException
// Programmer   Binh-Minh Ribler - Oct, 2006
// Modification
//        May 2008 - BMR
//              Moved from IdComponent.
//--------------------------------------------------------------------------
hid_t H5Location::p_dereference(hid_t loc_id, const void* ref, H5R_type_t ref_type, const PropList& plist, const char* from_func)
{
    hid_t plist_id;
    if (p_valid_id(plist.getId()))
        plist_id = plist.getId();
    else
        plist_id = H5P_DEFAULT;

    hid_t temp_id = H5Rdereference2(loc_id, plist_id, ref_type, ref);
    if (temp_id < 0)
    {
        throw ReferenceException(inMemFunc(from_func), "H5Rdereference failed");
    }

    return(temp_id);
}
#endif // DOXYGEN_SHOULD_SKIP_THIS

//--------------------------------------------------------------------------
// Function:    H5Location::dereference
///\brief       Dereferences a reference into an HDF5 object, given an HDF5 object.
///\param       loc - IN: Location of the referenced object
///\param       ref - IN: Reference pointer
///\param       ref_type - IN: Reference type
///\param       plist - IN: Property list - default to PropList::DEFAULT
///\exception   H5::ReferenceException
// Programmer   Binh-Minh Ribler - Oct, 2006
// Modification
//      May, 2008
//              Corrected missing parameters. - BMR
//--------------------------------------------------------------------------
void H5Location::dereference(const H5Location& loc, const void* ref, H5R_type_t ref_type, const PropList& plist)
{
    p_setId(p_dereference(loc.getId(), ref, ref_type, plist, "dereference"));
}

//--------------------------------------------------------------------------
// Function:    H5Location::dereference
// brief        Dereferences a reference into an HDF5 object, given an attribute.
// param        attr - IN: Attribute specifying the location of the referenced object
// param        ref - IN: Reference pointer
// param        ref_type - IN: Reference type
// param        plist - IN: Property list - default to PropList::DEFAULT
// exception    H5::ReferenceException
// Programmer   Binh-Minh Ribler - Oct, 2006
// Modification
//      May, 2008
//              Corrected missing parameters. -BMR
//      Mar, 2017
//              Removed in 1.10.1 because H5Location is Attribute's baseclass
//              now. -BMR
//--------------------------------------------------------------------------
 /* void H5Location::dereference(const Attribute& attr, const void* ref, H5R_type_t ref_type, const PropList& plist)
{
   p_setId(p_dereference(attr.getId(), ref, ref_type, plist, "dereference"));
}
 */ 

#ifndef H5_NO_DEPRECATED_SYMBOLS
//--------------------------------------------------------------------------
// Function:    H5Location::getObjType
///\brief       Retrieves the type of object that an object reference points to.
///\param       ref_type - IN: Type of reference to query, valid values are:
///             \li \c H5R_OBJECT - Reference is an object reference.
///             \li \c H5R_DATASET_REGION - Reference is a dataset region reference.
///\param       ref      - IN: Reference to query
///\return      An object type, which can be one of the following:
///             \li \c H5G_UNKNOWN  - A failure occurs. (-1)
///             \li \c H5G_GROUP  - Object is a group.
///             \li \c H5G_DATASET - Object is a dataset.
///             \li \c H5G_TYPE Object - is a named datatype
///             \li \c H5G_LINK  - Object is a symbolic link.
///             \li \c H5G_UDLINK  - Object is a user-defined link.
///\exception   H5::ReferenceException
// Programmer   Binh-Minh Ribler - May, 2004
// Modification
//      Sep 2012: Moved up from H5File, Group, DataSet, and DataType
//--------------------------------------------------------------------------
H5G_obj_t H5Location::getObjType(void *ref, H5R_type_t ref_type) const
{
    try {
        return(p_get_obj_type(ref, ref_type));
    }
    catch (ReferenceException& E) {
        throw ReferenceException(inMemFunc("getObjType"), E.getDetailMsg());
    }
}

#ifndef DOXYGEN_SHOULD_SKIP_THIS
//--------------------------------------------------------------------------
// Function:    H5Location::p_get_obj_type (protected)
// Purpose      Retrieves the type of object that an object reference points to.
// Parameters
//              ref      - IN: Reference to query
//              ref_type - IN: Type of reference to query
// Return       An object type, which can be one of the following:
//                      H5G_UNKNOWN \tFailure occurs (-1)
//                      H5G_GROUP \tObject is a group.
//                      H5G_DATASET \tObject is a dataset.
//                      H5G_TYPE Object \tis a named datatype.
//                      H5G_LINK \tObject is a symbolic link.
//                      H5G_UDLINK \tObject is a user-defined link.
// Exception    H5::ReferenceException
// Programmer   Binh-Minh Ribler - May, 2004
//--------------------------------------------------------------------------
H5G_obj_t H5Location::p_get_obj_type(void *ref, H5R_type_t ref_type) const
{
   H5G_obj_t obj_type = H5Rget_obj_type1(getId(), ref_type, ref);
   if (obj_type == H5G_UNKNOWN)
    {
        throw ReferenceException(inMemFunc("getObjType"), "H5Rget_obj_type1 failed");
    }
   return(obj_type);
}
#endif // DOXYGEN_SHOULD_SKIP_THIS
#endif /* H5_NO_DEPRECATED_SYMBOLS */

//--------------------------------------------------------------------------
// Function:    H5Location::getRefObjType
///\brief       Retrieves the type of object that an object reference points to.
///\param       ref      - IN: Reference to query
///\param       ref_type - IN: Type of reference to query, valid values are:
///             \li \c H5R_OBJECT         - Reference is an object reference.
///             \li \c H5R_DATASET_REGION - Reference is a dataset region reference.
///\return      An object type, which can be one of the following:
///             \li \c H5O_TYPE_UNKNOWN - Unknown object type (-1)
///             \li \c H5O_TYPE_GROUP   - Object is a group
///             \li \c H5O_TYPE_DATASET - Object is a dataset
///             \li \c H5O_TYPE_NAMED_DATATYPE - Object is a named datatype
///             \li \c H5O_TYPE_NTYPES  - Number of different object types
///\exception   H5::ReferenceException
// Programmer   Binh-Minh Ribler - May, 2004
//--------------------------------------------------------------------------
H5O_type_t H5Location::getRefObjType(void *ref, H5R_type_t ref_type) const
{
    try {
      return(p_get_ref_obj_type(ref, ref_type));
    }
    catch (ReferenceException& E) {
        throw ReferenceException(inMemFunc("getRefObjType"), E.getDetailMsg());
    }
}

#ifndef DOXYGEN_SHOULD_SKIP_THIS
//--------------------------------------------------------------------------
// Function:    H5Location::p_get_ref_obj_type (protected)
// Purpose      Retrieves the type of object that an object reference points to.
// Parameters
//              ref      - IN: Reference to query
//              ref_type - IN: Type of reference to query
// Return       An object type, which can be one of the following:
//                      H5O_TYPE_UNKNOWN        - Unknown object type (-1)
//                      H5O_TYPE_GROUP          - Object is a group
//                      H5O_TYPE_DATASET        - Object is a dataset
//                      H5O_TYPE_NAMED_DATATYPE - Object is a named datatype
//                      H5O_TYPE_NTYPES         - Number of object types
// Exception    H5::ReferenceException
// Programmer   Binh-Minh Ribler - May, 2004
//--------------------------------------------------------------------------
H5O_type_t H5Location::p_get_ref_obj_type(void *ref, H5R_type_t ref_type) const
{
    H5O_type_t obj_type = H5O_TYPE_UNKNOWN;
    herr_t ret_value = H5Rget_obj_type2(getId(), ref_type, ref, &obj_type);
    if (ret_value < 0)
    {
        throw ReferenceException(inMemFunc("getRefObjType"), "H5Rget_obj_type2 failed");
    }
    if (obj_type == H5O_TYPE_UNKNOWN || obj_type >= H5O_TYPE_NTYPES)
    {
        throw ReferenceException(inMemFunc("getRefObjType"), "H5Rget_obj_type2 returned invalid type");
    }
    return(obj_type);
}


//--------------------------------------------------------------------------
// Function:    H5Location::getRegion
///\brief       Retrieves a dataspace with the region pointed to selected.
///\param       ref      - IN: Reference to get region of
///\param       ref_type - IN: Type of reference to get region of - default
//                             to H5R_DATASET_REGION
///\return      DataSpace object
///\exception   H5::ReferenceException
// Programmer   Binh-Minh Ribler - May, 2004
// Modification
//      Mar 29, 2015
//              Used friend function to set id for DataSpace instead of the
//              existing id constructor or the setId method to avoid incrementing
//              ref count, as a work-around for a problem described in the JIRA
//              issue HDFFV-7947. -BMR
//--------------------------------------------------------------------------
DataSpace H5Location::getRegion(void *ref, H5R_type_t ref_type) const
{
    hid_t space_id = H5Rget_region(getId(), ref_type, ref);
    if (space_id < 0)
    {
        throw ReferenceException(inMemFunc("getRegion"), "H5Rget_region failed");
    }
    try {
        DataSpace dataspace;
        f_DataSpace_setId(&dataspace, space_id);
        return(dataspace);
    }
    catch (DataSpaceIException& E) {
        throw ReferenceException(inMemFunc("getRegion"), E.getDetailMsg());
    }
}


// From H5CommonFG.cpp
// Notes with "***Updated" are new and for Group.cpp
// Original notes are from December 2000
//
// There are a few comments that are common to most of the functions
// defined in this file so they are listed here.
// - getLocId is called by all functions, that call a C API, to get
//   the location id, which can be either a file id or a group id.
//   This function is pure virtual and it's up to H5File and Group
//   to call the right getId() - although, as the structure of the
//   library at this time, getId() is basically the IdComponent::getId()
//   ***Updated: after the classes are rearranged (HDFFV-9920), functions
//               in CommonFG are moved to Group, and they can call getId()
//               instead of getLocId().  getLocId() is kept for backward
//               compatibility on user applications.  Aug 18, 2016 -BMR
//   ***Updated: Moving to Group was a mistake, now to H5Location
//               Aug 24, 2016 -BMR
// - when a failure returned by the C API, the functions will call
//   throwException, which is a pure virtual function and is implemented
//   by H5File to throw a FileIException and by Group to throw a
//   GroupIException.
//   ***Updated: after HDFFV-9920, methods in classes H5Location and Group
//   use throwException to distinguish the FileIException and GroupIException.
//   CommonFG is no longer used in the library.  Aug 18, 2016 -BMR
//   ***Note: following the changes in HDFFV-9920, some of the methods could
//   throw different exceptions, but for backward-compatibility, throwException
//   is kept in those methods as well. Sep 17, 2016 -BMR

//--------------------------------------------------------------------------
// Function:    H5Location::createGroup
///\brief       Creates a new group at this location which can be a file
///             or another group.
///\param       name  - IN: Name of the group to create
///\param       size_hint - IN: Indicates the number of bytes to reserve for
///             the names that will appear in the group
///\return      Group instance
///\exception   H5::FileIException or H5::GroupIException
///\par Description
///             The optional \a size_hint specifies how much file space to
///             reserve for storing the names that will appear in this new
///             group. If a non-positive value is provided for the \a size_hint
///             then a default size is chosen.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Group H5Location::createGroup(const char* name, size_t size_hint) const
{
    // Group creation property list for size hint
    hid_t gcpl_id = 0;

    // Set the local heap size hint
    if (size_hint > 0)
     {
       // If the creation of the property list failed, throw an exception
       if ((gcpl_id = H5Pcreate(H5P_GROUP_CREATE)) < 0)
          throwException("createGroup", "H5Pcreate failed");

       if (H5Pset_local_heap_size_hint(gcpl_id, size_hint) < 0) {
          H5Pclose(gcpl_id);
          throwException("createGroup", "H5Pset_local_heap_size_hint failed");
       }
    }

    // Call C routine H5Gcreate2 to create the named group, giving the
    // location id which can be a file id or a group id
    hid_t group_id = H5Gcreate2(getId(), name, H5P_DEFAULT, gcpl_id, H5P_DEFAULT);

    // Close the group creation property list, if necessary
    if(gcpl_id > 0)
       H5Pclose(gcpl_id);

    // If the creation of the group failed, throw an exception
    if (group_id < 0)
        throwException("createGroup", "H5Gcreate2 failed");

    // No failure, create and return the Group object
    Group group;
    //group.p_setId(group_id);
    H5Location *ptr = &group;
    ptr->p_setId(group_id);
    return(group);
}

//--------------------------------------------------------------------------
// Function:    H5Location::createGroup
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Group H5Location::createGroup(const H5std_string& name, size_t size_hint) const
{
    return(createGroup( name.c_str(), size_hint));
}

//--------------------------------------------------------------------------
// Function:    H5Location::openGroup
///\brief       Opens an existing group in a location which can be a file
///             or another group.
///\param       name  - IN: Name of the group to open
///\return      Group instance
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Group H5Location::openGroup(const char* name) const
{
    // Call C routine H5Gopen2 to open the named group, giving the
    // location id which can be a file id or a group id
    hid_t group_id = H5Gopen2(getId(), name, H5P_DEFAULT);

    // If the opening of the group failed, throw an exception
    if (group_id < 0)
        throwException("openGroup", "H5Gopen2 failed");

    // No failure, create and return the Group object
    Group group;
    //group.p_setId(group_id);
    H5Location *ptr = &group;
    ptr->p_setId(group_id);
    return(group);
}

//--------------------------------------------------------------------------
// Function:    H5Location::openGroup
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Group H5Location::openGroup(const H5std_string& name) const
{
    return(openGroup( name.c_str()));
}

//--------------------------------------------------------------------------
// Function:    H5Location::createDataSet
///\brief       Creates a new dataset at this location.
///\param       name  - IN: Name of the dataset to create
///\param       data_type - IN: Datatype of the dataset
///\param       data_space - IN: Dataspace for the dataset
///\param       create_plist - IN: Creation properly list for the dataset
///\return      DataSet instance
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
DataSet H5Location::createDataSet(const char* name, const DataType& data_type, const DataSpace& data_space, const DSetCreatPropList& create_plist) const
{
   // Obtain identifiers for C API
    hid_t type_id = data_type.getId();
    hid_t space_id = data_space.getId();
    hid_t create_plist_id = create_plist.getId();

    // Call C routine H5Dcreate2 to create the named dataset
    hid_t dataset_id = H5Dcreate2(getId(), name, type_id, space_id, H5P_DEFAULT, create_plist_id, H5P_DEFAULT);

    // If the creation of the dataset failed, throw an exception
    if (dataset_id < 0)
        throwException("createDataSet", "H5Dcreate2 failed");

    // No failure, create and return the DataSet object
    DataSet dataset;
    f_DataSet_setId(&dataset, dataset_id);
    return(dataset);
}

//--------------------------------------------------------------------------
// Function:    H5Location::createDataSet
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
DataSet H5Location::createDataSet(const H5std_string& name, const DataType& data_type, const DataSpace& data_space, const DSetCreatPropList& create_plist) const
{
    return(createDataSet(name.c_str(), data_type, data_space, create_plist));
}

//--------------------------------------------------------------------------
// Function:    H5Location::openDataSet
///\brief       Opens an existing dataset at this location.
///\param       name  - IN: Name of the dataset to open
///\return      DataSet instance
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
DataSet H5Location::openDataSet(const char* name) const
{
    // Call C function H5Dopen2 to open the specified dataset, giving
    // the location id and the dataset's name
    hid_t dataset_id = H5Dopen2(getId(), name, H5P_DEFAULT);

    // If the dataset's opening failed, throw an exception
    if(dataset_id < 0)
        throwException("openDataSet", "H5Dopen2 failed");

    // No failure, create and return the DataSet object
    DataSet dataset;
    f_DataSet_setId(&dataset, dataset_id);
    return(dataset);
}

//--------------------------------------------------------------------------
// Function:    H5Location::openDataSet
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
DataSet H5Location::openDataSet(const H5std_string& name) const
{
    return(openDataSet( name.c_str()));
}

//--------------------------------------------------------------------------
// Function:    H5Location::link
///\brief       Creates a link of the specified type from \a new_name to
///             \a curr_name.
///\param       link_type  - IN: Link type; possible values are
///             \li \c H5G_LINK_HARD
///             \li \c H5G_LINK_SOFT
///\param       curr_name - IN: Name of the existing object if link is a hard
///             link; can be anything for the soft link
///\param       new_name - IN: New name for the object
///\exception   H5::FileIException or H5::GroupIException
///\par Description
///             Note that both names are interpreted relative to the
///             specified location.
///             For information on creating hard link and soft link, please
///             refer to the C layer Reference Manual at:
/// http://hdfgroup.org/HDF5/doc/RM/RM_H5L.html#Link-CreateHard and
/// http://hdfgroup.org/HDF5/doc/RM/RM_H5L.html#Link-CreateSoft
// Programmer   Binh-Minh Ribler - 2000
// Modification
//        2007: QAK modified to use H5L APIs - BMR
//--------------------------------------------------------------------------
void H5Location::link(H5L_type_t link_type, const char* curr_name, const char* new_name) const
{
    herr_t ret_value = -1;

    switch(link_type) {
        case H5L_TYPE_HARD:
            ret_value = H5Lcreate_hard(getId(), curr_name, H5L_SAME_LOC, new_name, H5P_DEFAULT, H5P_DEFAULT);
            break;

        case H5L_TYPE_SOFT:
            ret_value = H5Lcreate_soft(curr_name,getId(), new_name, H5P_DEFAULT, H5P_DEFAULT);
            break;

        case H5L_TYPE_ERROR:
        case H5L_TYPE_EXTERNAL:
        case H5L_TYPE_MAX:
        default:
            throwException("link", "unknown link type");
            break;
    } /* end switch */

   if (ret_value < 0)
        throwException("link", "creating link failed");
}

//--------------------------------------------------------------------------
// Function:    H5Location::link
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a curr_name and \a new_name.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void H5Location::link(H5L_type_t link_type, const H5std_string& curr_name, const H5std_string& new_name) const
{
    link(link_type, curr_name.c_str(), new_name.c_str());
}

//--------------------------------------------------------------------------
// Function:    H5Location::unlink
///\brief       Removes the specified name at this location.
///\param       name  - IN: Name of the object to be removed
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - 2000
// Modification
//      2007: QAK modified to use H5L APIs - BMR
//--------------------------------------------------------------------------
void H5Location::unlink(const char* name) const
{
    herr_t ret_value = H5Ldelete(getId(), name, H5P_DEFAULT);
    if (ret_value < 0)
        throwException("unlink", "H5Ldelete failed");
}

//--------------------------------------------------------------------------
// Function:    H5Location::unlink
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void H5Location::unlink(const H5std_string& name) const
{
    unlink(name.c_str());
}

//--------------------------------------------------------------------------
// Function:    H5Location::move
///\brief       Renames an object at this location.
///\param       src - IN: Object's original name
///\param       dst - IN: Object's new name
///\exception   H5::FileIException or H5::GroupIException
///\note
///             Exercise care in moving groups as it is possible to render
///             data in a file inaccessible with H5Location::move. Please refer
///             to the Group Interface in the HDF5 User's Guide for details at:
/// https://www.hdfgroup.org/HDF5/doc/UG/HDF5_Users_Guide-Responsive%20HTML5/index.html#t=HDF5_Users_Guide%2FGroups%2FHDF5_Groups.htm
// Programmer   Binh-Minh Ribler - 2000
// Modification
//        2007: QAK modified to use H5L APIs - BMR
//--------------------------------------------------------------------------
void H5Location::move(const char* src, const char* dst) const
{
    herr_t ret_value = H5Lmove(getId(), src, H5L_SAME_LOC, dst, H5P_DEFAULT, H5P_DEFAULT);
    if (ret_value < 0)
        throwException("move", "H5Lmove failed");
}

//--------------------------------------------------------------------------
// Function:    H5Location::move
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a src and \a dst.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void H5Location::move(const H5std_string& src, const H5std_string& dst) const
{
    move(src.c_str(), dst.c_str());
}

#ifndef H5_NO_DEPRECATED_SYMBOLS
//--------------------------------------------------------------------------
// Function:    H5Location::getObjinfo
///\brief       Returns information about an object.
///\param       name  - IN: Name of the object
///\param       follow_link - IN: Link flag
///\param       statbuf - OUT: Buffer to return information about the object
///\exception   H5::FileIException or H5::GroupIException
///\par Description
///             For more information, please refer to the C layer Reference
///             Manual at:
/// http://www.hdfgroup.org/HDF5/doc/RM/RM_H5G.html#Group-GetObjinfo
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void H5Location::getObjinfo(const char* name, hbool_t follow_link, H5G_stat_t& statbuf) const
{
    herr_t ret_value = H5Gget_objinfo(getId(), name, follow_link, &statbuf);
    if (ret_value < 0)
        throwException("getObjinfo", "H5Gget_objinfo failed");
}

//--------------------------------------------------------------------------
// Function:    H5Location::getObjinfo
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void H5Location::getObjinfo(const H5std_string& name, hbool_t follow_link, H5G_stat_t& statbuf) const
{
    getObjinfo(name.c_str(), follow_link, statbuf);
}

//--------------------------------------------------------------------------
// Function:    H5Location::getObjinfo
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above functions in that it doesn't have
///             the paramemter \a follow_link.
// Programmer   Binh-Minh Ribler - Nov, 2005
// Note: need to modify to use H5Oget_info and H5Lget_info - BMR
//--------------------------------------------------------------------------
void H5Location::getObjinfo(const char* name, H5G_stat_t& statbuf) const
{
    herr_t ret_value = H5Gget_objinfo(getId(), name, 0, &statbuf);
    if (ret_value < 0)
        throwException("getObjinfo", "H5Gget_objinfo failed");
}

//--------------------------------------------------------------------------
// Function:    H5Location::getObjinfo
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - Nov, 2005
//--------------------------------------------------------------------------
void H5Location::getObjinfo(const H5std_string& name, H5G_stat_t& statbuf) const
{
    getObjinfo(name.c_str(), statbuf);
}
#endif /* H5_NO_DEPRECATED_SYMBOLS */

//--------------------------------------------------------------------------
// Function:    H5Location::getLinkval
///\brief       Returns the name of the object that the symbolic link points to.
///\param       name  - IN: Symbolic link to the object
///\param       size - IN: Maximum number of characters of value to be returned
///\return      Name of the object
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
H5std_string H5Location::getLinkval(const char* name, size_t size) const
{
    H5L_info_t linkinfo;
    char *value_C;        // value in C string
    size_t val_size = size;
    H5std_string value = "";
    herr_t ret_value;

    // if user doesn't provide buffer size, determine it
    if (size == 0)
    {
        ret_value = H5Lget_info(getId(), name, &linkinfo, H5P_DEFAULT);
        if (ret_value < 0)
            throwException("getLinkval", "H5Lget_info to find buffer size failed");

        val_size = linkinfo.u.val_size;
    }

    // if link has value, retrieve the value, otherwise, return null string
    if (val_size > 0)
    {
        value_C = new char[val_size+1];  // temporary C-string for C API
        HDmemset(value_C, 0, val_size+1); // clear buffer

        ret_value = H5Lget_val(getId(), name, value_C, val_size, H5P_DEFAULT);
        if (ret_value < 0)
        {
            delete []value_C;
            throwException("getLinkval", "H5Lget_val failed");
        }

        value = H5std_string(value_C);
        delete []value_C;
    }
    return(value);
}

//--------------------------------------------------------------------------
// Function:    H5Location::getLinkval
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
H5std_string H5Location::getLinkval(const H5std_string& name, size_t size) const
{
    return(getLinkval( name.c_str(), size));
}

//--------------------------------------------------------------------------
// Function:    H5Location::mount
///\brief       Mounts the file \a child onto this group.
///\param       name  - IN: Name of the group
///\param       child - IN: File to mount
///\param       plist - IN: Property list to use
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - 2014 (original 2000)
//--------------------------------------------------------------------------
void H5Location::mount(const char* name, const H5File& child, const PropList& plist) const
{
    // Obtain identifiers for C API
    hid_t plist_id = plist.getId();
    hid_t child_id = child.getId();

    // Call C routine H5Fmount to do the mouting
    herr_t ret_value = H5Fmount(getId(), name, child_id, plist_id);

    // Raise exception if H5Fmount returns negative value
    if (ret_value < 0)
        throwException("mount", "H5Fmount failed");
}

//--------------------------------------------------------------------------
// Function:    H5Location::mount
// Purpose      This is an overloaded member function, kept for backward
//              compatibility.  It differs from the above function in that it
//              misses const's.  This wrapper will be removed in future release.
// Param        name  - IN: Name of the group
// Param        child - IN: File to mount
// Param        plist - IN: Property list to use
// Exception    H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - 2000
// Modification
//              Modified to call its replacement. -BMR, 2014/04/16
//              Removed from documentation. -BMR, 2016/03/07 1.8.17 and 1.10.0
//              Removed from code. -BMR, 2016/08/11 1.8.18 and 1.10.1
//--------------------------------------------------------------------------
//void H5Location::mount(const char* name, H5File& child, PropList& plist) const
//{
//   mount(name, child, plist);
//}

//--------------------------------------------------------------------------
// Function:    H5Location::mount
///\brief       This is an overloaded member function, provided for convenience.
///             It takes an \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void H5Location::mount(const H5std_string& name, const H5File& child, const PropList& plist) const
{
    mount(name.c_str(), child, plist);
}

//--------------------------------------------------------------------------
// Function:    H5Location::mount
// Purpose      This is an overloaded member function, kept for backward
//              compatibility.  It differs from the above function in that it
//              misses const's.  This wrapper will be removed in future release.
// Programmer   Binh-Minh Ribler - 2014
// Modification
//              Modified to call its replacement. -BMR, 2014/04/16
//              Removed from documentation. -BMR, 2016/03/07 1.8.17 and 1.10.0
//              Removed from code. -BMR, 2016/08/11 1.8.18 and 1.10.1
//--------------------------------------------------------------------------
//void H5Location::mount(const H5std_string& name, H5File& child, PropList& plist) const
//{
//   mount(name.c_str(), child, plist);
//}

//--------------------------------------------------------------------------
// Function:    H5Location::unmount
///\brief       Unmounts the specified file.
///\param       name  - IN: Name of the file to unmount
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void H5Location::unmount(const char* name) const
{
    // Call C routine H5Fmount to do the mouting
    herr_t ret_value = H5Funmount(getId(), name);

    // Raise exception if H5Funmount returns negative value
    if (ret_value < 0)
        throwException("unmount", "H5Funmount failed");
}

//--------------------------------------------------------------------------
// Function:    H5Location::unmount
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void H5Location::unmount(const H5std_string& name) const
{
    unmount(name.c_str());
}

#ifndef H5_NO_DEPRECATED_SYMBOLS
//--------------------------------------------------------------------------
// Function:    H5Location::iterateElems
///\brief       Iterates a user's function over the entries of a group.
///\param       name    - IN    : Name of group to iterate over
///\param       idx     - IN/OUT: Starting (IN) and ending (OUT) entry indices
///\param       op      - IN    : User's function to operate on each entry
///\param       op_data - IN/OUT: Data associated with the operation
///\return      The return value of the first operator that returns non-zero,
///             or zero if all members were processed with no operator
///             returning non-zero.
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
int H5Location::iterateElems(const char* name, int *idx, H5G_iterate_t op , void* op_data)
{
    int ret_value = H5Giterate(getId(), name, idx, op, op_data);
    if (ret_value < 0)
    {
        throwException("iterateElems", "H5Giterate failed");
    }
    return(ret_value);
}

//--------------------------------------------------------------------------
// Function:    H5Location::iterateElems
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
int H5Location::iterateElems(const H5std_string& name, int *idx, H5G_iterate_t op , void* op_data)
{
    return(iterateElems( name.c_str(), idx, op, op_data));
}
#endif /* H5_NO_DEPRECATED_SYMBOLS */

//--------------------------------------------------------------------------
// Function:    H5Location::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 H5Location::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:    H5Location::getObjnameByIdx
///\brief       Returns the name of an object in this group, given the
///             object's index.
///\param       idx  -     IN: Transient index of the object
///\return      Object name
///\exception   H5::FileIException or H5::GroupIException
///\par Description
///             The value of idx can be any nonnegative number less than the
///             total number of objects in the group, which is returned by
///             the function \c H5Location::getNumObjs.  Note that this is a
///             transient index; thus, an object may have a different index
///             each time the group is opened.
// Programmer   Binh-Minh Ribler - Mar, 2005
//--------------------------------------------------------------------------
H5std_string H5Location::getObjnameByIdx(hsize_t idx) const
{
    // call H5Lget_name_by_idx with name as NULL to get its length
    ssize_t name_len = H5Lget_name_by_idx(getId(), ".", H5_INDEX_NAME, H5_ITER_INC, idx, NULL, 0, H5P_DEFAULT);
    if(name_len < 0)
        throwException("getObjnameByIdx", "H5Lget_name_by_idx failed");

    // now, allocate C buffer to get the name
    char* name_C = new char[name_len+1];
    HDmemset(name_C, 0, name_len+1); // clear buffer

    name_len = H5Lget_name_by_idx(getId(), ".", H5_INDEX_NAME, H5_ITER_INC, idx, name_C, name_len+1, H5P_DEFAULT);

    if (name_len < 0)
    {
        delete []name_C;
        throwException("getObjnameByIdx", "H5Lget_name_by_idx failed");
    }

    // clean up and return the string
    H5std_string name = H5std_string(name_C);
    delete []name_C;
    return (name);
}

//--------------------------------------------------------------------------
// Function:    H5Location::getObjnameByIdx
///\brief       Retrieves the name of an object in this group, given the
///             object's index.
///\param       idx  -     IN: Transient index of the object
///\param       name - IN/OUT: Retrieved name of the object
///\param       size -     IN: Length to retrieve
///\return      Actual size of the object name or 0, if object has no name
///\exception   H5::FileIException or H5::GroupIException
///\par Description
///             The value of idx can be any nonnegative number less than the
///             total number of objects in the group, which is returned by
///             the function \c H5Location::getNumObjs.  Note that this is a
///             transient index; thus, an object may have a different index
///             each time the group is opened.
// Programmer   Binh-Minh Ribler - January, 2003
//--------------------------------------------------------------------------
ssize_t H5Location::getObjnameByIdx(hsize_t idx, char* name, size_t size) const
{
    ssize_t name_len = H5Lget_name_by_idx(getId(), ".", H5_INDEX_NAME, H5_ITER_INC, idx, name, size, H5P_DEFAULT);
    if(name_len < 0)
        throwException("getObjnameByIdx", "H5Lget_name_by_idx failed");

    return (name_len);
}

//--------------------------------------------------------------------------
// Function:    H5Location::getObjnameByIdx
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function in that it takes an
///             \c H5std_string for \a name.
// Programmer   Binh-Minh Ribler - January, 2003
//--------------------------------------------------------------------------
ssize_t H5Location::getObjnameByIdx(hsize_t idx, H5std_string& name, size_t size) const
{
    char* name_C = new char[size+1]; // temporary C-string for object name
    HDmemset(name_C, 0, size+1); // clear buffer

    // call overloaded function to get the name
    ssize_t name_len = getObjnameByIdx(idx, name_C, size+1);
    if(name_len < 0)
    {
      delete []name_C;
        throwException("getObjnameByIdx", "H5Lget_name_by_idx failed");
    }

    // clean up and return the string
    name = H5std_string(name_C);
    delete []name_C;
    return (name_len);
}

//--------------------------------------------------------------------------
// Function:    H5Location::childObjType
///\brief       Returns the type of an object in this file/group, given the
///             object's name.
///\param       objname - IN: Name of the object
///\return      Object type, which can have the following values for group,
///             dataset, and named datatype
///             \li \c H5O_TYPE_GROUP
///             \li \c H5O_TYPE_DATASET
///             \li \c H5O_TYPE_NAMED_DATATYPE
///             Refer to the C API documentation for more details:
///             http://www.hdfgroup.org/HDF5/doc/RM/RM_H5O.html#Object-GetInfo
///\exception   H5::FileIException or H5::GroupIException
///             Exception will be thrown when:
///             - an error returned by the C API
///             - object type is not one of the valid values above
// Programmer   Binh-Minh Ribler - April, 2014
//--------------------------------------------------------------------------
H5O_type_t H5Location::childObjType(const char* objname) const
{
    H5O_info_t objinfo;
    H5O_type_t objtype = H5O_TYPE_UNKNOWN;

    // Use C API to get information of the object
    herr_t ret_value = H5Oget_info_by_name(getId(), objname, &objinfo, H5P_DEFAULT);

    // Throw exception if C API returns failure
    if (ret_value < 0)
        throwException("childObjType", "H5Oget_info_by_name failed");
    // Return a valid type or throw an exception for unknown type
    else
        switch (objinfo.type)
        {
          case H5O_TYPE_GROUP:
          case H5O_TYPE_DATASET:
          case H5O_TYPE_NAMED_DATATYPE:
              objtype = objinfo.type;
              break;
          case H5O_TYPE_UNKNOWN:
          case H5O_TYPE_NTYPES:
          default:
              throwException("childObjType", "Unknown type of object");
        }
    return(objtype);
}

//--------------------------------------------------------------------------
// Function:    H5Location::childObjType
///\brief       This is an overloaded member function, provided for convenience.
///             It takes an \a H5std_string for the object's name.
///\brief       Returns the type of an object in this group, given the
///             object's name.
///\param       objname - IN: Name of the object (H5std_string&)
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - April, 2014
//--------------------------------------------------------------------------
H5O_type_t H5Location::childObjType(const H5std_string& objname) const
{
    // Use overloaded function
    H5O_type_t objtype = childObjType(objname.c_str());
    return(objtype);
}

//--------------------------------------------------------------------------
// Function:    H5Location::childObjType
///\brief       Returns the type of an object in this file/group, given the
///             object's index and its type and order.
///\param       index - IN: Position of the object
///\param       index_type - IN: Type of the index, default to H5_INDEX_NAME
///\param       order - IN: Traversing order, default to H5_ITER_INC
///\param       objname - IN: Name of the object, default to "."
///\return      Object type, which can have the following values for group,
///             dataset, and named datatype
///             \li \c H5O_TYPE_GROUP
///             \li \c H5O_TYPE_DATASET
///             \li \c H5O_TYPE_NAMED_DATATYPE
///             Refer to the C API documentation for more details:
///             http://www.hdfgroup.org/HDF5/doc/RM/RM_H5O.html#Object-GetInfo
///\exception   H5::FileIException or H5::GroupIException
///             Exception will be thrown when:
///             - an error returned by the C API
///             - object type is not one of the valid values above
// Developer's Notes:
//      - this overload uses H5Oget_info_by_idx instead of H5Oget_info_by_name
//        like the previous childObjType()
//      - index is the required argument so, first
//      - objname is last because it's more likely the location is already
//        fully specified
//      - Leave property list out for now because C API is not using it, it
//        can be added later when needed.
// Programmer   Binh-Minh Ribler - April, 2014
//--------------------------------------------------------------------------
H5O_type_t H5Location::childObjType(hsize_t index, H5_index_t index_type, H5_iter_order_t order, const char* objname) const
{
    herr_t ret_value;
    H5O_info_t objinfo;
    H5O_type_t objtype = H5O_TYPE_UNKNOWN;

    // Use C API to get information of the object
    ret_value = H5Oget_info_by_idx(getId(), objname, index_type, order, index, &objinfo, H5P_DEFAULT);

    // Throw exception if C API returns failure
    if (ret_value < 0)
        throwException("childObjType", "H5Oget_info_by_idx failed");
    // Return a valid type or throw an exception for unknown type
    else
        switch (objinfo.type)
        {
          case H5O_TYPE_GROUP:
          case H5O_TYPE_DATASET:
          case H5O_TYPE_NAMED_DATATYPE:
              objtype = objinfo.type;
              break;
          case H5O_TYPE_UNKNOWN:
          case H5O_TYPE_NTYPES:
          default:
              throwException("childObjType", "Unknown type of object");
        }
    return(objtype);
}

//--------------------------------------------------------------------------
// Function:    H5Location::childObjVersion
///\brief       Returns the object header version of an object in this file/group,
///             given the object's name.
///\param       objname - IN: Name of the object
///\return      Object version, which can have the following values:
///             \li \c H5O_VERSION_1
///             \li \c H5O_VERSION_2
///\exception   H5::FileIException or H5::GroupIException
///             Exception will be thrown when:
///             - an error returned by the C API
///             - version number is not one of the valid values above
// Programmer   Binh-Minh Ribler - April, 2014
//--------------------------------------------------------------------------
unsigned H5Location::childObjVersion(const char* objname) const
{
    H5O_info_t objinfo;
    unsigned version = 0;

    // Use C API to get information of the object
    herr_t ret_value = H5Oget_info_by_name(getId(), objname, &objinfo, H5P_DEFAULT);

    // Throw exception if C API returns failure
    if (ret_value < 0)
        throwException("childObjVersion", "H5Oget_info_by_name failed");
    // Return a valid version or throw an exception for invalid value
    else
    {
        version = objinfo.hdr.version;
        if (version != H5O_VERSION_1 && version != H5O_VERSION_2)
            throwException("childObjVersion", "Invalid version for object");
    }
    return(version);
}

//--------------------------------------------------------------------------
// Function:    H5Location::childObjVersion
///\brief       This is an overloaded member function, provided for convenience.
///             It takes an \a H5std_string for the object's name.
///\brief       Returns the type of an object in this group, given the
///             object's name.
///\param       objname - IN: Name of the object (H5std_string&)
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - April, 2014
//--------------------------------------------------------------------------
unsigned H5Location::childObjVersion(const H5std_string& objname) const
{
    // Use overloaded function
    unsigned version = childObjVersion(objname.c_str());
    return(version);
}

#ifndef H5_NO_DEPRECATED_SYMBOLS
#ifndef DOXYGEN_SHOULD_SKIP_THIS
//--------------------------------------------------------------------------
// Function:    H5Location::getObjTypeByIdx
///\brief       Returns the type of an object in this group, given the
///             object's index.
///\param       idx - IN: Transient index of the object
///\return      Object type
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - January, 2003
//--------------------------------------------------------------------------
H5G_obj_t H5Location::getObjTypeByIdx(hsize_t idx) const
{
   H5G_obj_t obj_type = H5Gget_objtype_by_idx(getId(), idx);
   if (obj_type == H5G_UNKNOWN)
        throwException("getObjTypeByIdx", "H5Gget_objtype_by_idx failed");

   return (obj_type);
}

//--------------------------------------------------------------------------
// Function:    H5Location::getObjTypeByIdx
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function because it also provides
///             the returned object type in text (char*)
///\param       idx       - IN: Transient index of the object
///\param       type_name - OUT: Object type in text
///\return      Object type
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - May, 2010
// Modification
//              Modified to use the other function. -BMR, 2016/03/07
//--------------------------------------------------------------------------
H5G_obj_t H5Location::getObjTypeByIdx(hsize_t idx, char* type_name) const
{
    H5std_string stype_name(type_name);
    return(getObjTypeByIdx(idx, stype_name));
}
//--------------------------------------------------------------------------
// Function:    H5Location::getObjTypeByIdx
///\brief       This is an overloaded member function, provided for convenience.
///             It differs from the above function because it also provides
///             the returned object type in text (H5std_string&)
///\param       idx       - IN: Transient index of the object
///\param       type_name - OUT: Object type in text
///\return      Object type
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - January, 2003
//--------------------------------------------------------------------------
H5G_obj_t H5Location::getObjTypeByIdx(hsize_t idx, H5std_string& type_name) const
{
    H5G_obj_t obj_type = H5Gget_objtype_by_idx(getId(), idx);
    switch (obj_type)
    {
      case H5G_LINK: type_name = H5std_string("symbolic link"); break;
      case H5G_GROUP: type_name = H5std_string("group"); break;
      case H5G_DATASET: type_name = H5std_string("dataset"); break;
      case H5G_TYPE: type_name = H5std_string("datatype"); break;
      case H5G_UNKNOWN:
      case H5G_UDLINK:
      case H5G_RESERVED_5:
      case H5G_RESERVED_6:
      case H5G_RESERVED_7:
      default:
          throwException("getObjTypeByIdx", "H5Gget_objtype_by_idx failed");
    }
    return (obj_type);
}

#endif // DOXYGEN_SHOULD_SKIP_THIS
#endif /* H5_NO_DEPRECATED_SYMBOLS */

//--------------------------------------------------------------------------
// Function:    H5Location::throwException
///\brief       Invokes subclass' throwException
///\param       func_name - Name of the function where failure occurs
///\param       msg       - Message describing the failure
///\exception   H5::GroupIException
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void H5Location::throwException(const H5std_string& func_name, const H5std_string& msg) const
{
    throwException(func_name, msg);
}

//--------------------------------------------------------------------------
// Function:    f_DataSet_setId - friend
// Modification:
//              Moved to H5CommonFG.cpp after the rearrangement of classes
//              -BMR, Dec 2016
//--------------------------------------------------------------------------

// end of From H5CommonFG.cpp

//--------------------------------------------------------------------------
// Function:    f_Attribute_setId - friend
// Modification:
//              Moved to H5Object.cpp after the rearrangement of classes
//              -BMR, Dec 2016
//--------------------------------------------------------------------------

//--------------------------------------------------------------------------
// Function:    f_DataSpace_setId - friend
// Purpose      This function is friend to class H5::DataSpace so that it can
//              can set DataSpace::id in order to work around a problem
//              described in the JIRA issue HDFFV-7947.
//              Applications shouldn't need to use it.
// param        dspace   - IN/OUT: DataSpace object to be changed
// param        new_id - IN: New id to set
// Programmer   Binh-Minh Ribler - 2015
//--------------------------------------------------------------------------
void f_DataSpace_setId(DataSpace* dspace, hid_t new_id)
{
    dspace->p_setId(new_id);
}

//--------------------------------------------------------------------------
// Function:    H5Location destructor
///\brief       Noop destructor.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
H5Location::~H5Location() {}

#endif // DOXYGEN_SHOULD_SKIP_THIS

} // end namespace