HDF5 C++ API Reference Manual

 

 

 

H5CommonFG.h

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// C++ informative line for the emacs editor: -*- C++ -*-
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// CommonFG is a protocol class.  Its existence is simply to provide the
// common services that are provided by H5File and Group.  The file or
// group in the context of this class is referred to as 'location'.

#ifndef _CommonFG_H
#define _CommonFG_H

#ifndef H5_NO_NAMESPACE
namespace H5 {
#endif

class Group;
class H5File;
class H5_DLLCPP CommonFG {
   public:
        // 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 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 string& name) const;

        // Creates a new dataset at this location.
        DataSet createDataSet(const char* name, const DataType& data_type, const DataSpace& data_space, const DSetCreatPropList& create_plist = DSetCreatPropList::DEFAULT) const;
        DataSet createDataSet(const 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 string& name) const;

        // Retrieves comment for the HDF5 object specified by its name.
        string getComment(const char* name, size_t bufsize) const;
        string getComment(const string& name, size_t bufsize) const;

        // Sets the comment for an HDF5 object specified by its name.
        void setComment(const char* name, const char* comment) const;
        void setComment(const string& name, const string& comment) const;

        // Returns the name of the HDF5 object that the symbolic link points to.
        string getLinkval(const char* name, size_t size) const;
        string getLinkval(const string& name, size_t size) const;

        // Returns the number of objects in this group.
        hsize_t getNumObjs() 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 string& name, hbool_t follow_link, H5G_stat_t& statbuf) const;

        // Retrieves the name of an object in this group, given the
        // object's index.
        ssize_t getObjnameByIdx(hsize_t idx, string& name, size_t size) const;
        string getObjnameByIdx(hsize_t idx) const;

        // 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, string& type_name) 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 string& name, int *idx, H5G_iterate_t op, void *op_data);

        // 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(H5G_link_t link_type, const char* curr_name, const char* new_name) const;
        void link(H5G_link_t link_type, const string& curr_name, const string& new_name) const;

        // Removes the specified name at this location.
        void unlink(const char* name) const;
        void unlink(const string& name) const;

        // Mounts the file 'child' onto this location.
        void mount(const char* name, H5File& child, PropList& plist) const;
        void mount(const string& name, H5File& child, PropList& plist) const;

        // Unmounts the file named 'name' from this parent location.
        void unmount(const char* name) const;
        void unmount(const string& name) const;

        // Renames an object at this location.
        void move(const char* src, const char* dst) const;
        void move(const string& src, const string& dst) const;

        // Opens a generic named datatype in this location.
        DataType openDataType(const char* name) const;
        DataType openDataType(const string& name) const;

        // Opens a named enumeration datatype in this location.
        EnumType openEnumType(const char* name) const;
        EnumType openEnumType(const string& name) const;

        // Opens a named compound datatype in this location.
        CompType openCompType(const char* name) const;
        CompType openCompType(const string& name) const;

        // Opens a named integer datatype in this location.
        IntType openIntType(const char* name) const;
        IntType openIntType(const string& name) const;

        // Opens a named floating-point datatype in this location.
        FloatType openFloatType(const char* name) const;
        FloatType openFloatType(const string& name) const;

        // Opens a named string datatype in this location.
        StrType openStrType(const char* name) const;
        StrType openStrType(const string& name) const;

        virtual hid_t getLocId() const = 0; 

        virtual void throwException(const string func_name, const string msg) const = 0;

        // Default constructor.
        CommonFG();

        // Noop destructor.
        virtual ~CommonFG();

   private:
        // Common code for member functions openXxxType 
        hid_t p_open_data_type(const char* name) const;

}; // end of CommonFG declaration

#ifndef H5_NO_NAMESPACE
}
#endif
#endif

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