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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
import hdf.hdf5lib.H5;
import hdf.hdf5lib.HDF5Constants;
/**
* <p>
* Title: HDF Native Package (Java) Example
* </p>
* <p>
* Description: this example shows how to create HDF5 groups using the
* "HDF Native Package (Java)". The example created the group structure:
*
* <pre>
* "/" (root)
* g1
* g11
* g12
* g2
* g21
* g22
* </pre>
*
* </p>
*/
public class HDF5GroupCreate {
private static String fname = "HDF5GroupCreate.h5";
private static void CreateGroup()
{
long file_id = HDF5Constants.H5I_INVALID_HID;
long subgroup_id = HDF5Constants.H5I_INVALID_HID;
long group_id1 = HDF5Constants.H5I_INVALID_HID;
long group_id2 = HDF5Constants.H5I_INVALID_HID;
// Create a new file using default properties.
try {
file_id = H5.H5Fcreate(fname, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
HDF5Constants.H5P_DEFAULT);
}
catch (Exception e) {
e.printStackTrace();
System.err.println("Failed to create file:" + fname);
return;
}
// Create a group in the file.
try {
if (file_id >= 0) {
group_id1 = H5.H5Gcreate(file_id, "g1", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT,
HDF5Constants.H5P_DEFAULT);
if (group_id1 >= 0) {
subgroup_id = H5.H5Gcreate(group_id1, "g11", HDF5Constants.H5P_DEFAULT,
HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
try {
if (subgroup_id >= 0)
H5.H5Gclose(subgroup_id);
}
catch (Exception e) {
e.printStackTrace();
}
subgroup_id = H5.H5Gcreate(group_id1, "g12", HDF5Constants.H5P_DEFAULT,
HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
try {
if (subgroup_id >= 0)
H5.H5Gclose(subgroup_id);
}
catch (Exception e) {
e.printStackTrace();
}
}
group_id2 = H5.H5Gcreate(file_id, "g2", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT,
HDF5Constants.H5P_DEFAULT);
if (group_id2 >= 0) {
subgroup_id = H5.H5Gcreate(group_id2, "g21", HDF5Constants.H5P_DEFAULT,
HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
try {
if (subgroup_id >= 0)
H5.H5Gclose(subgroup_id);
}
catch (Exception e) {
e.printStackTrace();
}
subgroup_id = H5.H5Gcreate(group_id2, "g22", HDF5Constants.H5P_DEFAULT,
HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
try {
if (subgroup_id >= 0)
H5.H5Gclose(subgroup_id);
}
catch (Exception e) {
e.printStackTrace();
}
}
}
}
catch (Exception e) {
e.printStackTrace();
}
// Close the groups.
try {
if (group_id2 >= 0)
H5.H5Gclose(group_id2);
}
catch (Exception e) {
e.printStackTrace();
}
try {
if (group_id1 >= 0)
H5.H5Gclose(group_id1);
}
catch (Exception e) {
e.printStackTrace();
}
// Close the file.
try {
if (file_id >= 0)
H5.H5Fclose(file_id);
}
catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) { HDF5GroupCreate.CreateGroup(); }
}
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