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

1 files changed, 266 insertions, 0 deletions

diff --git a/java/examples/groups/H5Ex_G_Compact.java b/java/examples/groups/H5Ex_G_Compact.java
new file mode 100644
index 0000000..ca9b6c8
--- /dev/null
+++ b/java/examples/groups/H5Ex_G_Compact.java
@@ -0,0 +1,266 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * 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 and print the storage layout.
+ ************************************************************/
+
+package examples.groups;
+
+import hdf.hdf5lib.H5;
+import hdf.hdf5lib.HDF5Constants;
+import hdf.hdf5lib.structs.H5G_info_t;
+
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.Map;
+
+public class H5Ex_G_Compact {
+
+    private static final String FILE1 = "H5Ex_G_Compact1.h5";
+    private static final String FILE2 = "H5Ex_G_Compact2.h5";
+    private static final String GROUP = "G1";
+
+    enum H5G_storage {
+        H5G_STORAGE_TYPE_UNKNOWN(-1),
+        H5G_STORAGE_TYPE_SYMBOL_TABLE(0),
+        H5G_STORAGE_TYPE_COMPACT(1),
+        H5G_STORAGE_TYPE_DENSE(2);
+
+        private static final Map<Integer, H5G_storage> lookup = new HashMap<Integer, H5G_storage>();
+
+        static {
+            for (H5G_storage s : EnumSet.allOf(H5G_storage.class))
+                lookup.put(s.getCode(), s);
+        }
+
+        private int code;
+
+        H5G_storage(int layout_type) {
+            this.code = layout_type;
+        }
+
+        public int getCode() {
+            return this.code;
+        }
+
+        public static H5G_storage get(int code) {
+            return lookup.get(code);
+        }
+    }
+
+    public static void CreateGroup() {
+        long file_id = -1;
+        long group_id = -1;
+        long fapl_id = -1;
+        H5G_info_t ginfo;
+        long size;
+
+        // Create file 1. This file will use original format groups.
+        try {
+            file_id = H5.H5Fcreate (FILE1, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+        // Create a group in the file1.
+        try {
+            if(file_id >= 0)
+                group_id = H5.H5Gcreate(file_id, GROUP, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Obtain the group info and print the group storage type.
+        try {
+            if(group_id >= 0) {
+                ginfo = H5.H5Gget_info(group_id);
+                System.out.print("Group storage type for " + FILE1 + " is: ");
+                switch (H5G_storage.get(ginfo.storage_type)) {
+                case H5G_STORAGE_TYPE_COMPACT:
+                    System.out.println("H5G_STORAGE_TYPE_COMPACT"); // New compact format
+                    break;
+                case H5G_STORAGE_TYPE_DENSE:
+                    System.out.println("H5G_STORAGE_TYPE_DENSE"); // New dense (indexed) format
+                    break;
+                case H5G_STORAGE_TYPE_SYMBOL_TABLE:
+                    System.out.println("H5G_STORAGE_TYPE_SYMBOL_TABLE"); // Original format
+                    break;
+                case H5G_STORAGE_TYPE_UNKNOWN:
+                    System.out.println("H5G_STORAGE_TYPE_UNKNOWN");
+                    break;
+                default:
+                    System.out.println("Storage Type Invalid");
+                    break;
+                }
+            }
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Close the group.
+        try {
+            if (group_id >= 0)
+                H5.H5Gclose(group_id);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // close the file 1.
+        try {
+            if (file_id >= 0)
+                H5.H5Fclose(file_id);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Re-open file 1. Need to get the correct file size.
+        try {
+            file_id = H5.H5Fopen(FILE1, HDF5Constants.H5F_ACC_RDONLY, HDF5Constants.H5P_DEFAULT);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Obtain and print the file size.
+        try {
+            if (file_id >= 0) {
+                size = H5.H5Fget_filesize(file_id);
+                System.out.println("File size for " + FILE1 + " is: " + size + " bytes");
+            }
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Close FILE1.
+        try {
+            if (file_id >= 0)
+                H5.H5Fclose(file_id);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Set file access property list to allow the latest file format.
+        // This will allow the library to create new compact format groups.
+        try {
+            fapl_id = H5.H5Pcreate(HDF5Constants.H5P_FILE_ACCESS);
+            if (fapl_id >= 0)
+                H5.H5Pset_libver_bounds(fapl_id, HDF5Constants.H5F_LIBVER_LATEST, HDF5Constants.H5F_LIBVER_LATEST);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+        System.out.println();
+        // Create file 2 using the new file access property list.
+        try {
+            file_id = H5.H5Fcreate(FILE2, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT, fapl_id);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+        // Create group in file2.
+        try {
+            if(file_id >= 0)
+                group_id = H5.H5Gcreate(file_id, GROUP, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Obtain the group info and print the group storage type.
+        try {
+            if (group_id >= 0) {
+                ginfo = H5.H5Gget_info(group_id);
+                System.out.print("Group storage type for " + FILE2 + " is: ");
+                switch (H5G_storage.get(ginfo.storage_type)) {
+                case H5G_STORAGE_TYPE_COMPACT:
+                    System.out.println("H5G_STORAGE_TYPE_COMPACT"); // New compact format
+                    break;
+                case H5G_STORAGE_TYPE_DENSE:
+                    System.out.println("H5G_STORAGE_TYPE_DENSE"); // New dense (indexed) format
+                    break;
+                case H5G_STORAGE_TYPE_SYMBOL_TABLE:
+                    System.out.println("H5G_STORAGE_TYPE_SYMBOL_TABLE"); // Original format
+                    break;
+                case H5G_STORAGE_TYPE_UNKNOWN:
+                    System.out.println("H5G_STORAGE_TYPE_UNKNOWN");
+                    break;
+                default:
+                    System.out.println("Storage Type Invalid");
+                    break;
+                }
+            }
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Close the group.
+        try {
+            if (group_id >= 0)
+                H5.H5Gclose(group_id);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // close the file 2.
+        try {
+            if (file_id >= 0)
+                H5.H5Fclose(file_id);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Re-open file 2. Needed to get the correct file size.
+        try {
+            file_id = H5.H5Fopen(FILE2, HDF5Constants.H5F_ACC_RDONLY, fapl_id);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Obtain and print the file size.
+        try {
+            if (file_id >= 0) {
+                size = H5.H5Fget_filesize(file_id);
+                System.out.println("File size for " + FILE2 + " is: " + size + " bytes");
+            }
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        // Close FILE2.
+        try {
+            if (file_id >= 0)
+                H5.H5Fclose(file_id);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void main(String[] args) {
+        H5Ex_G_Compact.CreateGroup();
+    }
+}