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// C++ informative line for the emacs editor: -*- C++ -*-
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#ifndef __H5Location_H
#define __H5Location_H
#include "H5Classes.h" // constains forward class declarations
namespace H5 {
/*! \class H5Location
\brief H5Location is an abstract base class, added in version 1.8.12.
It provides a collection of wrappers for the C functions that take a
location identifier to specify the HDF5 object. The location identifier
can be either file, group, dataset, attribute, or named datatype.
Wrappers for H5A functions stay in H5Object.
Inheritance: IdComponent
*/
// Class forwarding
class H5_DLLCPP ArrayType;
class H5_DLLCPP LinkAccPropList;
class H5_DLLCPP VarLenType;
class H5_DLLCPP H5Location : public IdComponent {
public:
// Checks if a link of a given name exists in a location
bool exists(const char* name, const LinkAccPropList& lapl = LinkAccPropList::DEFAULT) const;
bool exists(const H5std_string& name, const LinkAccPropList& lapl = LinkAccPropList::DEFAULT) const;
// Flushes all buffers associated with this location to disk.
void flush(H5F_scope_t scope) const;
// Gets the name of the file, specified by this location.
H5std_string getFileName() const;
#ifndef H5_NO_DEPRECATED_SYMBOLS
// Retrieves the type of object that an object reference points to.
H5G_obj_t getObjType(void *ref, H5R_type_t ref_type = H5R_OBJECT) const;
#endif /* H5_NO_DEPRECATED_SYMBOLS */
// Retrieves the type of object that an object reference points to.
H5O_type_t getRefObjType(void *ref, H5R_type_t ref_type = H5R_OBJECT) const;
// Note: getRefObjType deprecates getObjType, but getObjType's name is
// misleading, so getRefObjType is used in the new function instead.
// Sets the comment for an HDF5 object specified by its name.
void setComment(const char* name, const char* comment) const;
void setComment(const H5std_string& name, const H5std_string& comment) const;
void setComment(const char* comment) const;
void setComment(const H5std_string& comment) const;
// Retrieves comment for the HDF5 object specified by its name.
ssize_t getComment(const char* name, size_t buf_size, char* comment) const;
H5std_string getComment(const char* name, size_t buf_size=0) const;
H5std_string getComment(const H5std_string& name, size_t buf_size=0) const;
// Removes the comment for the HDF5 object specified by its name.
void removeComment(const char* name) const;
void removeComment(const H5std_string& name) const;
// Creates a reference to a named object or to a dataset region
// in this object.
void reference(void* ref, const char* name,
H5R_type_t ref_type = H5R_OBJECT) const;
void reference(void* ref, const H5std_string& name,
H5R_type_t ref_type = H5R_OBJECT) const;
void reference(void* ref, const char* name, const DataSpace& dataspace,
H5R_type_t ref_type = H5R_DATASET_REGION) const;
void reference(void* ref, const H5std_string& name, const DataSpace& dataspace,
H5R_type_t ref_type = H5R_DATASET_REGION) const;
// Open a referenced object whose location is specified by either
// a file, an HDF5 object, or an attribute.
void dereference(const H5Location& loc, const void* ref, H5R_type_t ref_type = H5R_OBJECT, const PropList& plist = PropList::DEFAULT);
// Removed in 1.10.1, because H5Location is baseclass
//void dereference(const Attribute& attr, const void* ref, H5R_type_t ref_type = H5R_OBJECT, const PropList& plist = PropList::DEFAULT);
// Retrieves a dataspace with the region pointed to selected.
DataSpace getRegion(void *ref, H5R_type_t ref_type = H5R_DATASET_REGION) const;
// From CommonFG
// Creates a new group at this location which can be a file
// or another group.
Group createGroup(const char* name, size_t size_hint = 0) const;
Group createGroup(const H5std_string& name, size_t size_hint = 0) const;
// Opens an existing group in a location which can be a file
// or another group.
Group openGroup(const char* name) const;
Group openGroup(const H5std_string& name) const;
// Creates a new dataset in this group.
DataSet createDataSet(const char* name, const DataType& data_type, const DataSpace& data_space, const DSetCreatPropList& create_plist = DSetCreatPropList::DEFAULT) const;
DataSet createDataSet(const H5std_string& name, const DataType& data_type, const DataSpace& data_space, const DSetCreatPropList& create_plist = DSetCreatPropList::DEFAULT) const;
// Opens an existing dataset at this location.
DataSet openDataSet(const char* name) const;
DataSet openDataSet(const H5std_string& name) const;
// Returns the value of a symbolic link.
H5std_string getLinkval(const char* link_name, size_t size=0) const;
H5std_string getLinkval(const H5std_string& link_name, size_t size=0) const;
// Returns the number of objects in this group.
hsize_t getNumObjs() const;
// Retrieves the name of an object in this group, given the
// object's index.
H5std_string getObjnameByIdx(hsize_t idx) const;
ssize_t getObjnameByIdx(hsize_t idx, char* name, size_t size) const;
ssize_t getObjnameByIdx(hsize_t idx, H5std_string& name, size_t size) const;
// Retrieves the type of an object in this file or group, given the
// object's name
H5O_type_t childObjType(const H5std_string& objname) const;
H5O_type_t childObjType(const char* objname) const;
H5O_type_t childObjType(hsize_t index, H5_index_t index_type=H5_INDEX_NAME, H5_iter_order_t order=H5_ITER_INC, const char* objname=".") const;
// Returns the object header version of an object in this file or group,
// given the object's name.
unsigned childObjVersion(const char* objname) const;
unsigned childObjVersion(const H5std_string& objname) const;
#ifndef H5_NO_DEPRECATED_SYMBOLS
// Returns the type of an object in this group, given the
// object's index.
H5G_obj_t getObjTypeByIdx(hsize_t idx) const;
H5G_obj_t getObjTypeByIdx(hsize_t idx, char* type_name) const;
H5G_obj_t getObjTypeByIdx(hsize_t idx, H5std_string& type_name) const;
// Returns information about an HDF5 object, given by its name,
// at this location.
void getObjinfo(const char* name, hbool_t follow_link, H5G_stat_t& statbuf) const;
void getObjinfo(const H5std_string& name, hbool_t follow_link, H5G_stat_t& statbuf) const;
void getObjinfo(const char* name, H5G_stat_t& statbuf) const;
void getObjinfo(const H5std_string& name, H5G_stat_t& statbuf) const;
// Iterates over the elements of this group - not implemented in
// C++ style yet.
int iterateElems(const char* name, int *idx, H5G_iterate_t op, void *op_data);
int iterateElems(const H5std_string& name, int *idx, H5G_iterate_t op, void *op_data);
#endif /* H5_NO_DEPRECATED_SYMBOLS */
// Creates a link of the specified type from new_name to current_name;
// both names are interpreted relative to the specified location id.
void link(H5L_type_t link_type, const char* curr_name, const char* new_name) const;
void link(H5L_type_t link_type, const H5std_string& curr_name, const H5std_string& new_name) const;
// Removes the specified name at this location.
void unlink(const char* name) const;
void unlink(const H5std_string& name) const;
// Mounts the file 'child' onto this location.
void mount(const char* name, const H5File& child, const PropList& plist) const;
//void mount(const char* name, H5File& child, PropList& plist) const; // removed from 1.8.18 and 1.10.1
void mount(const H5std_string& name, const H5File& child, const PropList& plist) const;
//void mount(const H5std_string& name, H5File& child, PropList& plist) const; // removed from 1.8.18 and 1.10.1
// Unmounts the file named 'name' from this parent location.
void unmount(const char* name) const;
void unmount(const H5std_string& name) const;
// Renames an object at this location.
void move(const char* src, const char* dst) const;
void move(const H5std_string& src, const H5std_string& dst) const;
// end From CommonFG
/// For subclasses, H5File and Group, to throw appropriate exception.
virtual void throwException(const H5std_string& func_name, const H5std_string& msg) const;
// Default constructor
H5Location();
protected:
#ifndef DOXYGEN_SHOULD_SKIP_THIS
// *** Deprecation warning ***
// The following two constructors are no longer appropriate after the
// data member "id" had been moved to the sub-classes.
// The copy constructor is a noop and is removed in 1.8.15 and the
// other will be removed from 1.10 release, and then from 1.8 if its
// removal does not raise any problems in two 1.10 releases.
// Creates a copy of an existing object giving the location id.
H5Location(const hid_t loc_id);
// Creates a reference to an HDF5 object or a dataset region.
void p_reference(void* ref, const char* name, hid_t space_id, H5R_type_t ref_type) const;
// Dereferences a ref into an HDF5 id.
hid_t p_dereference(hid_t loc_id, const void* ref, H5R_type_t ref_type, const PropList& plist, const char* from_func);
#ifndef H5_NO_DEPRECATED_SYMBOLS
// Retrieves the type of object that an object reference points to.
H5G_obj_t p_get_obj_type(void *ref, H5R_type_t ref_type) const;
#endif /* H5_NO_DEPRECATED_SYMBOLS */
// Retrieves the type of object that an object reference points to.
H5O_type_t p_get_ref_obj_type(void *ref, H5R_type_t ref_type) const;
// Sets the identifier of this object to a new value. - this one
// doesn't increment reference count
//virtual void p_setId(const hid_t new_id);
#endif // DOXYGEN_SHOULD_SKIP_THIS
// Noop destructor.
virtual ~H5Location();
}; // end of H5Location
} // namespace H5
#endif // __H5Location_H
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