[svn-r29226] HDFFV-9552: merge in java code.

1 files changed, 121 insertions, 0 deletions

diff --git a/java/examples/groups/H5Ex_G_Corder.java b/java/examples/groups/H5Ex_G_Corder.java
new file mode 100644
index 0000000..95790bf
--- /dev/null
+++ b/java/examples/groups/H5Ex_G_Corder.java
@@ -0,0 +1,121 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * 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 files COPYING and Copyright.html.  COPYING can be found at the root   *
+ * of the source code distribution tree; Copyright.html can be found at the  *
+ * root level of an installed copy of the electronic HDF5 document set and   *
+ * is linked from the top-level documents page.  It can also be found at     *
+ * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
+ * access to either file, you may request a copy from help@hdfgroup.org.     *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/************************************************************
+    Creating a file with creation properties and traverse the
+    groups in alpabetical and creation order.
+ ************************************************************/
+
+package examples.groups;
+
+import hdf.hdf5lib.H5;
+import hdf.hdf5lib.HDF5Constants;
+import hdf.hdf5lib.structs.H5G_info_t;
+
+public class H5Ex_G_Corder {
+    private static String FILE = "H5Ex_G_Corder.h5";
+
+    private static void CreateGroup() throws Exception {
+        long file_id = -1;
+        long group_id = -1;
+        long subgroup_id = -1;
+        long gcpl_id = -1;
+        int status;
+        H5G_info_t ginfo;
+        int i;
+        String name;
+
+        try {
+            // Create a new file using default properties.
+            file_id = H5.H5Fcreate(FILE, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
+                    HDF5Constants.H5P_DEFAULT);
+
+            // Create group creation property list and enable link creation order tracking.
+            gcpl_id = H5.H5Pcreate(HDF5Constants.H5P_GROUP_CREATE);
+            status = H5.H5Pset_link_creation_order(gcpl_id, HDF5Constants.H5P_CRT_ORDER_TRACKED
+                    + HDF5Constants.H5P_CRT_ORDER_INDEXED);
+
+            // Create primary group using the property list.
+            if (status >= 0)
+                group_id = H5.H5Gcreate(file_id, "index_group", HDF5Constants.H5P_DEFAULT, gcpl_id,
+                        HDF5Constants.H5P_DEFAULT);
+
+            try {
+                /*
+                 * Create subgroups in the primary group. These will be tracked by creation order. Note that these
+                 * groups do not have to have the creation order tracking property set.
+                 */
+                subgroup_id = H5.H5Gcreate(group_id, "H", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT,
+                        HDF5Constants.H5P_DEFAULT);
+                status = H5.H5Gclose(subgroup_id);
+                subgroup_id = H5.H5Gcreate(group_id, "D", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT,
+                        HDF5Constants.H5P_DEFAULT);
+                status = H5.H5Gclose(subgroup_id);
+                subgroup_id = H5.H5Gcreate(group_id, "F", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT,
+                        HDF5Constants.H5P_DEFAULT);
+                status = H5.H5Gclose(subgroup_id);
+                subgroup_id = H5.H5Gcreate(group_id, "5", HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT,
+                        HDF5Constants.H5P_DEFAULT);
+                status = H5.H5Gclose(subgroup_id);
+
+                // Get group info.
+                ginfo = H5.H5Gget_info(group_id);
+
+                // Traverse links in the primary group using alphabetical indices (H5_INDEX_NAME).
+                System.out.println("Traversing group using alphabetical indices:");
+                for (i = 0; i < ginfo.nlinks; i++) {
+                    // Retrieve the name of the ith link in a group
+                    name = H5.H5Lget_name_by_idx(group_id, ".", HDF5Constants.H5_INDEX_NAME, HDF5Constants.H5_ITER_INC,
+                            i, HDF5Constants.H5P_DEFAULT);
+                    System.out.println("Index " + i + ": " + name);
+                }
+
+                // Traverse links in the primary group by creation order (H5_INDEX_CRT_ORDER).
+                System.out.println("Traversing group using creation order indices:");
+                for (i = 0; i < ginfo.nlinks; i++) {
+                    // Retrieve the name of the ith link in a group
+                    name = H5.H5Lget_name_by_idx(group_id, ".", HDF5Constants.H5_INDEX_CRT_ORDER,
+                            HDF5Constants.H5_ITER_INC, i, HDF5Constants.H5P_DEFAULT);
+                    System.out.println("Index " + i + ": " + name);
+                }
+
+            }
+            catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+        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 {
+            H5Ex_G_Corder.CreateGroup();
+        }
+        catch (Exception ex) {
+            ex.printStackTrace();
+        }
+    }
+
+}