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Diffstat (limited to 'c++/src/H5Location.h')
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1 files changed, 225 insertions, 0 deletions
diff --git a/c++/src/H5Location.h b/c++/src/H5Location.h new file mode 100644 index 0000000..f49b3c1 --- /dev/null +++ b/c++/src/H5Location.h @@ -0,0 +1,225 @@ +// 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 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 + +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. +*/ +// Class forwarding +class ArrayType; +class LinkAccPropList; +class VarLenType; + +// Inheritance: IdComponent +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; + + // Determines the number of attributes belong to this object. + int getNumAttrs() 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 |