[svn-r3621] This commit was manufactured by cvs2svn to create branch 'hdf5_1_4'.

doc/html/Tutor/examples/mountexample.f90

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+!
+!In the following example we create one file with a group in it, 
+!and another file with a dataset. Mounting is used to
+!access the dataset from the second file as a member of a group 
+!in the first file. 
+!
+
+     PROGRAM MOUNTEXAMPLE
+
+     USE HDF5 ! This module contains all necessary modules 
+        
+     IMPLICIT NONE
+
+     !
+     ! Filenames are "mount1.h5" and "mount2.h5"
+     !
+     CHARACTER(LEN=9), PARAMETER :: filename1 = "mount1.h5"
+     CHARACTER(LEN=9), PARAMETER :: filename2 = "mount2.h5"
+
+     !
+     !data space rank and dimensions
+     !
+     INTEGER, PARAMETER :: RANK = 2
+     INTEGER, PARAMETER :: NX = 4
+     INTEGER, PARAMETER :: NY = 5
+
+     !
+     ! File identifiers
+     !
+     INTEGER(HID_T) :: file1_id, file2_id  
+     
+     !
+     ! Group identifier
+     !
+     INTEGER(HID_T) :: gid 
+
+     !
+     ! Dataset identifier
+     !
+     INTEGER(HID_T) :: dset_id
+ 
+     !
+     ! Data space identifier
+     !
+     INTEGER(HID_T) :: dataspace
+ 
+     !
+     ! Data type identifier
+     !
+     INTEGER(HID_T) :: dtype_id
+
+     ! 
+     ! The dimensions for the dataset.
+     !
+     INTEGER(HSIZE_T), DIMENSION(2) :: dims = (/NX,NY/)
+
+     !
+     ! Flag to check operation success 
+     !         
+     INTEGER     ::   error
+
+     !
+     ! General purpose integer 
+     !         
+     INTEGER     ::   i, j
+
+     !
+     ! Data buffers 
+     !         
+     INTEGER, DIMENSION(NX,NY) :: data_in, data_out
+
+     !
+     ! Initialize FORTRAN interface. 
+     !
+     CALL h5open_f(error) 
+
+     !
+     ! Initialize data_in buffer
+     !
+     do i = 1, NX
+          do j = 1, NY
+               data_in(i,j) =  (i-1) + (j-1)
+          end do
+     end do
+
+     !
+     ! Create first file "mount1.h5" using default properties.
+     ! 
+     CALL h5fcreate_f(filename1, H5F_ACC_TRUNC_F, file1_id, error)
+
+     !
+     ! Create group "/G" inside file "mount1.h5".
+     ! 
+     CALL h5gcreate_f(file1_id, "/G", gid, error)
+
+     !
+     ! Close file and group identifiers.
+     ! 
+     CALL h5gclose_f(gid, error)
+     CALL h5fclose_f(file1_id, error)
+
+     !
+     ! Create second file "mount2.h5" using default properties.
+     ! 
+     CALL h5fcreate_f(filename2, H5F_ACC_TRUNC_F, file2_id, error)
+
+     !
+     ! Create data space for the dataset. 
+     !
+     CALL h5screate_simple_f(RANK, dims, dataspace, error)
+
+     !
+     ! Create dataset "/D" inside file "mount2.h5".
+     ! 
+     CALL h5dcreate_f(file2_id, "/D", H5T_NATIVE_INTEGER, dataspace, &
+                      dset_id, error)
+ 
+     !
+     ! Write data_in to the dataset
+     !
+     CALL h5dwrite_f(dset_id, H5T_NATIVE_INTEGER, data_in, error)
+
+     !
+     ! Close file, dataset and dataspace identifiers.
+     ! 
+     CALL h5sclose_f(dataspace, error)
+     CALL h5dclose_f(dset_id, error)
+     CALL h5fclose_f(file2_id, error)
+
+     !
+     ! Reopen both files.
+     ! 
+     CALL h5fopen_f (filename1, H5F_ACC_RDWR_F, file1_id, error)
+     CALL h5fopen_f (filename2, H5F_ACC_RDWR_F, file2_id, error)
+
+     !
+     ! Mount the second file under the first file's "/G" group.
+     ! 
+     CALL h5fmount_f (file1_id, "/G", file2_id, error)
+
+
+     !
+     ! Access dataset D in the first file under /G/D name.
+     ! 
+     CALL h5dopen_f(file1_id, "/G/D", dset_id, error)
+
+     !
+     ! Get dataset's data type.
+     ! 
+     CALL h5dget_type_f(dset_id, dtype_id, error)
+
+     !
+     ! Read the dataset.
+     ! 
+     CALL h5dread_f(dset_id, dtype_id, data_out, error)
+
+     !
+     ! Print out the data.
+     ! 
+     do i = 1, NX
+          print *, (data_out(i,j), j = 1, NY)
+     end do
+
+
+     !
+     !Close dset_id and dtype_id.
+     ! 
+     CALL h5dclose_f(dset_id, error)
+     CALL h5tclose_f(dtype_id, error)
+
+     !
+     ! Unmount the second file.
+     ! 
+     CALL h5funmount_f(file1_id, "/G", error);
+
+     !
+     ! Close both files.
+     ! 
+     CALL h5fclose_f(file1_id, error)
+     CALL h5fclose_f(file2_id, error)
+     !
+     ! Close FORTRAN interface. 
+     !
+     CALL h5close_f(error) 
+
+     END PROGRAM MOUNTEXAMPLE
+