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Diffstat (limited to 'c++/src/H5Location.h')
| -rw-r--r-- | c++/src/H5Location.h | 251 |
1 files changed, 135 insertions, 116 deletions
diff --git a/c++/src/H5Location.h b/c++/src/H5Location.h index a57f7f1..bbeb30f 100644 --- a/c++/src/H5Location.h +++ b/c++/src/H5Location.h @@ -6,159 +6,168 @@ * * * 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. * + * the COPYING file, which can be found at the root of the source code * + * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. * + * 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 +#include "H5Classes.h" // constains forward class declarations namespace H5 { -class H5_DLLCPP H5Location; // forward declaration for UserData4Aiterate +class H5Location; // forward declaration for UserData4Aiterate // Define the operator function pointer for H5Aiterate(). -typedef void (*attr_operator_t)( H5Location& loc/*in*/, +typedef void (*attr_operator_t)(H5Location& loc/*in*/, const H5std_string attr_name/*in*/, void *operator_data/*in,out*/); class UserData4Aiterate { // user data for attribute iteration public: - attr_operator_t op; - void* opData; - H5Location* location; + attr_operator_t op; + void* opData; + H5Location* location; }; /*! \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, or named datatype. + \brief H5Location is an abstract base class, providing a collection of + wrappers of the C functions that take a location identifier, which can be + either file, group, dataset, attribute, or named datatype. */ -// Most of these methods were in H5Object but are now moved here because -// a location can be a file, group, dataset, or named datatype. -BMR, 2013-10-1 +// Inheritance: IdComponent class H5_DLLCPP H5Location : public IdComponent { public: - // Creates an attribute for the specified object at this location - // PropList is currently not used, so always be default. - Attribute createAttribute( const char* name, const DataType& type, const DataSpace& space, const PropList& create_plist = PropList::DEFAULT ) const; - Attribute createAttribute( const H5std_string& name, const DataType& type, const DataSpace& space, const PropList& create_plist = PropList::DEFAULT ) const; + // Creates an attribute for the specified object at this location + // PropList is currently not used, so always be default. + virtual Attribute createAttribute(const char* name, const DataType& type, const DataSpace& space, const PropList& create_plist = PropList::DEFAULT) const; + virtual Attribute createAttribute(const H5std_string& name, const DataType& type, const DataSpace& space, const PropList& create_plist = PropList::DEFAULT) const; + + // Given its name, opens the attribute that belongs to an object at + // this location. + virtual Attribute openAttribute(const char* name) const; + virtual Attribute openAttribute(const H5std_string& name) const; - // Given its name, opens the attribute that belongs to an object at - // this location. - Attribute openAttribute( const char* name ) const; - Attribute openAttribute( const H5std_string& name ) const; + // Given its index, opens the attribute that belongs to an object at + // this location. + virtual Attribute openAttribute(const unsigned int idx) const; - // Given its index, opens the attribute that belongs to an object at - // this location. - Attribute openAttribute( const unsigned int idx ) const; + // Checks if a link of a given name exists in this location + bool nameExists(const char* name, const LinkAccPropList& lapl = LinkAccPropList::DEFAULT) const; + bool nameExists(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; + // 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; + // Gets the name of the file, specified by this location. + H5std_string getFileName() const; - // Determines the number of attributes at this location. - int getNumAttrs() const; + // Determines the number of attributes at this location. + int getNumAttrs() 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; + // 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. - - // Iterate user's function over the attributes at this location. - int iterateAttrs(attr_operator_t user_op, unsigned* idx = NULL, void* op_data = NULL); - - // Checks whether the named attribute exists at this location. - bool attrExists(const char* name) const; - bool attrExists(const H5std_string& name) const; - - // Renames the named attribute to a new name. - void renameAttr(const char* oldname, const char* newname) const; - void renameAttr(const H5std_string& oldname, const H5std_string& newname) const; - - // Removes the named attribute from this location. - void removeAttr(const char* name) const; - void removeAttr(const H5std_string& name) const; - - // 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); - void dereference(const Attribute& attr, const void* ref, H5R_type_t ref_type = H5R_OBJECT); - - // Retrieves a dataspace with the region pointed to selected. - DataSpace getRegion(void *ref, H5R_type_t ref_type = H5R_DATASET_REGION) const; - - ///\brief Returns an identifier. (pure virtual) - virtual hid_t getId() const = 0; + // 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. + + // Iterate user's function over the attributes at this location. + virtual int iterateAttrs(attr_operator_t user_op, unsigned* idx = NULL, void* op_data = NULL); + + // Checks whether the named attribute exists at this location. + virtual bool attrExists(const char* name) const; + virtual bool attrExists(const H5std_string& name) const; + + // Renames the named attribute to a new name. + virtual void renameAttr(const char* oldname, const char* newname) const; + virtual void renameAttr(const H5std_string& oldname, const H5std_string& newname) const; + + // Removes the named attribute from this location. + virtual void removeAttr(const char* name) const; + virtual void removeAttr(const H5std_string& name) const; + + // Returns the object header version of an object + unsigned objVersion() const; + + // 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); + void dereference(const Attribute& attr, const void* ref, H5R_type_t ref_type = H5R_OBJECT); + + // Retrieves a dataspace with the region pointed to selected. + DataSpace getRegion(void *ref, H5R_type_t ref_type = H5R_DATASET_REGION) const; + + // Opens an object at this location, without knowing the object type. + hid_t openObjId(const char* name, const LinkAccPropList& lapl = LinkAccPropList::DEFAULT) const; + hid_t openObjId(const H5std_string& name, const LinkAccPropList& lapl = LinkAccPropList::DEFAULT) const; + + // Closes an object opened by openObjId(). + void closeObjId(hid_t obj_id) const; + + ///\brief Returns an identifier. (pure virtual) + virtual hid_t getId() const = 0; protected: #ifndef DOXYGEN_SHOULD_SKIP_THIS - // Default constructor, - H5Location(); + // Default constructor, + H5Location(); - // *** 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. + // *** 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 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; + // 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 char* from_func); + // Dereferences a ref into an HDF5 id. + hid_t p_dereference(hid_t loc_id, const void* ref, H5R_type_t ref_type, 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; + // 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; + // 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 @@ -166,10 +175,20 @@ class H5_DLLCPP H5Location : public IdComponent { #endif // DOXYGEN_SHOULD_SKIP_THIS - // Noop destructor. - virtual ~H5Location(); + // Noop destructor. + virtual ~H5Location(); -}; /* end class H5Location */ +}; // end of H5Location +} // namespace H5 -} #endif // __H5Location_H + +// Modification +// Oct 1, 2013 -BMR +// H5Location is added in version 1.8.12. +// Most of these methods were in H5Object but are now moved here +// because a location can be a file, group, dataset, or named datatype. +// May 04, 2017 -BMR +// Wrappers for H5A functions are copied to H5Object because H5A +// functions do not take an attribute id as loc_id. The original +// wrappers will be deprecated in future releases. |