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* commit '54957d37f5aa73912763dbb6e308555e863c43f4': Commit copyright header change for src/H5PLpkg.c which was added after running script to make changes. Add new files in release_docs to MANIFEST. Cimmit changes to Makefile.in(s) and H5PL.c that resulted from running autogen.sh. Merge pull request #407 in HDFFV/hdf5 from ~LRKNOX/hdf5_lrk:hdf5_1_10_1 to hdf5_1_10_1 Change copyright headers to replace url referring to file to be removed and replace it with new url for COPYING file.
158 lines
6.3 KiB
Fortran
158 lines
6.3 KiB
Fortran
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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! Copyright by The HDF Group. *
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! Copyright by the Board of Trustees of the University of Illinois. *
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! All rights reserved. *
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! *
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! This file is part of HDF5. The full HDF5 copyright notice, including *
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! terms governing use, modification, and redistribution, is contained in *
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! the COPYING file, which can be found at the root of the source code *
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! distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
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! If you do not have access to either file, you may request a copy from *
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! help@hdfgroup.org. *
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! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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!
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!
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! This program shows how to create and store references to the objects.
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! Program creates a file, two groups, a dataset to store integer data and
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! a dataset to store references to the objects.
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! Stored references are used to open the objects they are point to.
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! Data is written to the dereferenced dataset, and class type is displayed for
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! the shared datatype.
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!
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PROGRAM OBJ_REFERENCES
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USE HDF5 ! This module contains all necessary modules
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IMPLICIT NONE
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CHARACTER(LEN=10), PARAMETER :: filename = "FORTRAN.h5" ! File
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CHARACTER(LEN=8), PARAMETER :: dsetnamei = "INTEGERS" ! Dataset with the integer data
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CHARACTER(LEN=17), PARAMETER :: dsetnamer = "OBJECT_REFERENCES" ! Dataset wtih object
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! references
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CHARACTER(LEN=6), PARAMETER :: groupname1 = "GROUP1" ! Groups in the file
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CHARACTER(LEN=6), PARAMETER :: groupname2 = "GROUP2" !
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INTEGER(HID_T) :: file_id ! File identifier
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INTEGER(HID_T) :: grp1_id ! Group identifiers
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INTEGER(HID_T) :: grp2_id !
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INTEGER(HID_T) :: dset_id ! Dataset identifiers
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INTEGER(HID_T) :: dsetr_id !
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INTEGER(HID_T) :: type_id ! Type identifier
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INTEGER(HID_T) :: space_id ! Dataspace identifiers
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INTEGER(HID_T) :: spacer_id !
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INTEGER :: error
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INTEGER(HSIZE_T), DIMENSION(1) :: dims = (/5/)
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INTEGER(HSIZE_T), DIMENSION(1) :: dimsr= (/4/)
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INTEGER(HSIZE_T), DIMENSION(1) :: my_maxdims = (/5/)
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INTEGER :: rank = 1
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INTEGER :: rankr = 1
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TYPE(hobj_ref_t_f), DIMENSION(4) :: ref
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TYPE(hobj_ref_t_f), DIMENSION(4) :: ref_out
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INTEGER, DIMENSION(5) :: data = (/1, 2, 3, 4, 5/)
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INTEGER :: class
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INTEGER(HSIZE_T), DIMENSION(2) :: data_dims, ref_size
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!
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! Initialize FORTRAN interface.
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!
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CALL h5open_f(error)
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!
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! Create a file
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!
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CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file_id, error)
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! Default file access and file creation
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! properties are used.
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!
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! Create a group in the file
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!
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CALL h5gcreate_f(file_id, groupname1, grp1_id, error)
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!
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! Create a group inside the created gorup
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!
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CALL h5gcreate_f(grp1_id, groupname2, grp2_id, error)
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!
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! Create dataspaces for datasets
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!
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CALL h5screate_simple_f(rank, dims, space_id, error, maxdims=my_maxdims)
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CALL h5screate_simple_f(rankr, dimsr, spacer_id, error)
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!
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! Create integer dataset
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!
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CALL h5dcreate_f(file_id, dsetnamei, H5T_NATIVE_INTEGER, space_id, &
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dset_id, error)
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!
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! Create dataset to store references to the objects
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!
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CALL h5dcreate_f(file_id, dsetnamer, H5T_STD_REF_OBJ, spacer_id, &
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dsetr_id, error)
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!
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! Create a datatype and store in the file
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!
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CALL h5tcopy_f(H5T_NATIVE_REAL, type_id, error)
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CALL h5tcommit_f(file_id, "MyType", type_id, error)
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!
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! Close dataspaces, groups and integer dataset
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!
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CALL h5sclose_f(space_id, error)
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CALL h5sclose_f(spacer_id, error)
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CALL h5tclose_f(type_id, error)
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CALL h5dclose_f(dset_id, error)
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CALL h5gclose_f(grp1_id, error)
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CALL h5gclose_f(grp2_id, error)
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!
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! Create references to two groups, integer dataset and shared datatype
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! and write it to the dataset in the file
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!
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CALL h5rcreate_f(file_id, groupname1, ref(1), error)
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CALL h5rcreate_f(file_id, "/GROUP1/GROUP2", ref(2), error)
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CALL h5rcreate_f(file_id, dsetnamei, ref(3), error)
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CALL h5rcreate_f(file_id, "MyType", ref(4), error)
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ref_size(1) = size(ref)
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CALL h5dwrite_f(dsetr_id, H5T_STD_REF_OBJ, ref, ref_size, error)
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!
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! Close the dataset
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!
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CALL h5dclose_f(dsetr_id, error)
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!
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! Reopen the dataset with object references and read references to the buffer
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!
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CALL h5dopen_f(file_id, dsetnamer,dsetr_id,error)
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ref_size(1) = size(ref_out)
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CALL h5dread_f(dsetr_id, H5T_STD_REF_OBJ, ref_out, ref_size, error)
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!
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! Dereference the third reference. We know that it is a dataset. On practice
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! one should use h5rget_object_type_f function to find out
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! the type of an object the reference points to.
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!
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CALL h5rdereference_f(dsetr_id, ref(3), dset_id, error)
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!
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! Write data to the dataset.
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!
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data_dims(1) = size(data)
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CALL h5dwrite_f(dset_id, H5T_NATIVE_INTEGER, data, data_dims, error)
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if (error .eq. 0) write(*,*) "Data has been successfully written to the dataset "
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!
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! Dereference the fourth reference. We know that it is a datatype. On practice
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! one should use h5rget_object_type_f function to find out
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! the type of an object the reference points to.
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!
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CALL h5rdereference_f(dsetr_id, ref(4), type_id, error)
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!
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! Get datatype class and display it if it is of a FLOAT class.
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!
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CALL h5tget_class_f(type_id, class, error)
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if(class .eq. H5T_FLOAT_F) write(*,*) "Stored datatype is of a FLOAT class"
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!
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! Close all objects.
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!
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CALL h5dclose_f(dset_id, error)
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CALL h5tclose_f(type_id, error)
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CALL h5dclose_f(dsetr_id, error)
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CALL h5fclose_f(file_id, error)
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!
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! Close FORTRAN interface.
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!
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CALL h5close_f(error)
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END PROGRAM OBJ_REFERENCES
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