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/******************************************************************
* CreateDataset.java (for HDF5 tutorial lesson 5)
*
* -- Creating a HDF5 Dataset
* (a java conversion from h5_crtdat.c)
*
******************************************************************/
import ncsa.hdf.hdf5lib.*;
import ncsa.hdf.hdf5lib.exceptions.*;
public class CreateDataset
{
public static void main(String []argv)
{
final String FILE = "dset.h5";
int file_id = -1; // file identifier
int dataset_id = -1; // dataset identifier
int dataspace_id = -1; // dataspace identifier
long[] dims = new long[2];
int status = -1;
// Create a new file using default properties.
file_id = H5Fcreate_wrap (FILE, HDF5Constants.H5F_ACC_TRUNC,
HDF5Constants.H5P_DEFAULT,
HDF5Constants.H5P_DEFAULT);
// Create the data space for the dataset.
dims[0] = 4;
dims[1] = 6;
dataspace_id = H5Screate_simple_wrap (2, dims, null);
// Create the dataset.
dataset_id =
H5Dcreate_wrap (file_id, "/dset",
H5.J2C (HDF5CDataTypes.JH5T_STD_I32BE),
dataspace_id, HDF5Constants.H5P_DEFAULT);
// End access to the dataset and release resources used by it.
status = H5Dclose_wrap (dataset_id);
// Terminate access to the data space.
status = H5Sclose_wrap (dataspace_id);
// Close the file.
status = H5Fclose_wrap (file_id);
}
// Help function for creating a new file
public static int H5Fcreate_wrap (String name, int flags,
int create_id, int access_id)
{
int file_id = -1; // file identifier
try
{
// Create a new file using default file properties.
file_id = H5.H5Fcreate (name, flags, create_id, access_id);
}
catch (HDF5Exception hdf5e)
{
System.out.println
("CreateDataset.H5Fcreate_wrap() with HDF5Exception: "
+ hdf5e.getMessage());
}
catch (Exception e)
{
System.out.println
("CreateDataset.H5Fcreate_wrap() with other Exception: "
+ e.getMessage());
}
return file_id;
}
// Help function for creating a new simple dataspace and opening it
// for access
public static int H5Screate_simple_wrap (int rank, long dims[],
long maxdims[])
{
int dataspace_id = -1; // dataspace identifier
try
{
// Create the data space for the dataset.
dataspace_id = H5.H5Screate_simple (rank, dims, maxdims);
}
catch (HDF5Exception hdf5e)
{
System.out.println
("CreateDataset.H5Screate_simple_wrap() with HDF5Exception: "
+ hdf5e.getMessage());
}
catch (Exception e)
{
System.out.println
("CreateDataset.H5Screate_simple_wrap() with other Exception: "
+ e.getMessage());
}
return dataspace_id;
}
// Help function for creating a dataset
public static int H5Dcreate_wrap (int loc_id, String name, int type_id,
int space_id, int create_plist_id)
{
int dataset_id = -1; // dataset identifier
try
{
// Create the dataset
dataset_id = H5.H5Dcreate (loc_id, name, type_id, space_id,
create_plist_id);
}
catch (HDF5Exception hdf5e)
{
System.out.println
("CreateDataset.H5Dcreate_wrap() with HDF5Exception: "
+ hdf5e.getMessage());
}
catch (Exception e)
{
System.out.println
("CreateDataset.H5Dcreate_wrap() with other Exception: "
+ e.getMessage());
}
return dataset_id;
}
// Help function for ending access to the dataset and releasing
// resources used by it.
public static int H5Dclose_wrap (int dataset_id)
{
int status = -1;
try
{
// End access to the dataset and release resources used by it.
status = H5.H5Dclose (dataset_id);
}
catch (HDF5Exception hdf5e)
{
System.out.println
("CreateDataset.H5Dclose_wrap() with HDF5Exception: "
+ hdf5e.getMessage());
}
catch (Exception e)
{
System.out.println
("CreateDataset.H5Dclose_wrap() with other exception: "
+ e.getMessage());
}
return status;
}
// Help function for terminating access to the data space.
public static int H5Sclose_wrap (int dataspace_id)
{
int status = -1;
try
{
// Terminate access to the data space.
status = H5.H5Sclose (dataspace_id);
}
catch (HDF5Exception hdf5e)
{
System.out.println
("CreateDataset.H5Sclose_wrap() with HDF5Exception: "
+ hdf5e.getMessage());
}
catch (Exception e)
{
System.out.println
("CreateDataset.H5Sclose_wrap() with other exception: "
+ e.getMessage());
}
return status;
}
// Help function for terminating access to the file.
public static int H5Fclose_wrap (int file_id)
{
int status = -1;
try
{
// Terminate access to the file.
status = H5.H5Fclose (file_id);
}
catch (HDF5Exception hdf5e)
{
System.out.println
("CreateDataset.H5Fclose_wrap() with HDF5Exception: "
+ hdf5e.getMessage());
}
catch (Exception e)
{
System.out.println
("CreateDataset.H5Fclose_wrap() with other exception: "
+ e.getMessage());
}
return status;
}
}
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