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-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
- * Copyright by The HDF Group. *
- * 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. *
- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-
-/************************************************************
- This example shows how to create intermediate groups with
- a single call to H5Gcreate.
- ************************************************************/
-package examples.groups;
-
-import java.util.ArrayList;
-
-import hdf.hdf5lib.H5;
-import hdf.hdf5lib.HDF5Constants;
-import hdf.hdf5lib.callbacks.H5O_iterate_opdata_t;
-import hdf.hdf5lib.callbacks.H5O_iterate_t;
-import hdf.hdf5lib.structs.H5O_info_t;
-
-public class H5Ex_G_Intermediate {
-
- private static String FILE = "H5Ex_G_Intermediate.h5";
-
- private void CreateGroup() throws Exception
- {
-
- long file_id = HDF5Constants.H5I_INVALID_HID;
- long group_id = HDF5Constants.H5I_INVALID_HID;
- long gcpl_id = HDF5Constants.H5I_INVALID_HID;
-
- try {
- // Create a new file_id using the default properties.
- file_id = H5.H5Fcreate(FILE, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
- HDF5Constants.H5P_DEFAULT);
-
- // Create group_id creation property list and set it to allow creation of intermediate group_ids.
- gcpl_id = H5.H5Pcreate(HDF5Constants.H5P_LINK_CREATE);
- H5.H5Pset_create_intermediate_group(gcpl_id, true);
-
- /*
- * Create the group_id /G1/G2/G3. Note that /G1 and /G1/G2 do not exist yet. This call would cause
- * an error if we did not use the previously created property list.
- */
- group_id = H5.H5Gcreate(file_id, "/G1/G2/G3", gcpl_id, HDF5Constants.H5P_DEFAULT,
- HDF5Constants.H5P_DEFAULT);
- // Print all the objects in the file_ids to show that intermediate group_ids have been created.
- System.out.println("Objects in the file_id:");
-
- // H5O_iterate_opdata_t iter_data = null;
- H5O_iterate_opdata_t iter_data = new H5O_iter_data();
- H5O_iterate_t iter_cb = new H5O_iter_callback();
-
- H5.H5Ovisit(file_id, HDF5Constants.H5_INDEX_NAME, HDF5Constants.H5_ITER_NATIVE, iter_cb,
- iter_data);
- }
- catch (Exception e) {
- e.printStackTrace();
- }
- finally {
- // Close and release resources.
- if (gcpl_id >= 0)
- H5.H5Pclose(gcpl_id);
- if (group_id >= 0)
- H5.H5Gclose(group_id);
- if (file_id >= 0)
- H5.H5Fclose(file_id);
- }
- }
-
- public static void main(String[] args)
- {
- try {
- (new H5Ex_G_Intermediate()).CreateGroup();
- }
- catch (Exception ex) {
- ex.printStackTrace();
- }
- }
-
- private class idata {
- public String link_name = null;
- public int link_type = -1;
-
- idata(String name, int type)
- {
- this.link_name = name;
- this.link_type = type;
- }
- }
-
- private class H5O_iter_data implements H5O_iterate_opdata_t {
- public ArrayList<idata> iterdata = new ArrayList<idata>();
- }
-
- private class H5O_iter_callback implements H5O_iterate_t {
- public int callback(long group, String name, H5O_info_t info, H5O_iterate_opdata_t op_data)
- {
- idata id = new idata(name, info.type);
- ((H5O_iter_data)op_data).iterdata.add(id);
-
- System.out.print("/"); /* Print root group in object path */
-
- // Check if the current object is the root group, and if not print the full path name and type.
-
- if (name.charAt(0) == '.') /* Root group, do not print '.' */
- System.out.println(" (Group)");
- else if (info.type == HDF5Constants.H5O_TYPE_GROUP)
- System.out.println(name + " (Group)");
- else if (info.type == HDF5Constants.H5O_TYPE_DATASET)
- System.out.println(name + " (Dataset)");
- else if (info.type == HDF5Constants.H5O_TYPE_NAMED_DATATYPE)
- System.out.println(name + " (Datatype)");
- else
- System.out.println(name + " (Unknown)");
-
- return 0;
- }
- }
-}