[svn-r29226] HDFFV-9552: merge in java code.
This commit is contained in:
Allen Byrne
266
java/examples/groups/H5Ex_G_Compact.java
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266
java/examples/groups/H5Ex_G_Compact.java
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/************************************************************
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Creating a file and print the storage layout.
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************************************************************/
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package examples.groups;
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import hdf.hdf5lib.H5;
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import hdf.hdf5lib.HDF5Constants;
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import hdf.hdf5lib.structs.H5G_info_t;
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import java.util.EnumSet;
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import java.util.HashMap;
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import java.util.Map;
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public class H5Ex_G_Compact {
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private static final String FILE1 = "H5Ex_G_Compact1.h5";
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private static final String FILE2 = "H5Ex_G_Compact2.h5";
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private static final String GROUP = "G1";
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enum H5G_storage {
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H5G_STORAGE_TYPE_UNKNOWN(-1),
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H5G_STORAGE_TYPE_SYMBOL_TABLE(0),
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H5G_STORAGE_TYPE_COMPACT(1),
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H5G_STORAGE_TYPE_DENSE(2);
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private static final Map<Integer, H5G_storage> lookup = new HashMap<Integer, H5G_storage>();
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static {
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for (H5G_storage s : EnumSet.allOf(H5G_storage.class))
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lookup.put(s.getCode(), s);
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}
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private int code;
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H5G_storage(int layout_type) {
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this.code = layout_type;
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}
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public int getCode() {
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return this.code;
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}
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public static H5G_storage get(int code) {
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return lookup.get(code);
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}
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}
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public static void CreateGroup() {
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long file_id = -1;
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long group_id = -1;
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long fapl_id = -1;
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H5G_info_t ginfo;
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long size;
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// Create file 1. This file will use original format groups.
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try {
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file_id = H5.H5Fcreate (FILE1, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Create a group in the file1.
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try {
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if(file_id >= 0)
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group_id = H5.H5Gcreate(file_id, GROUP, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Obtain the group info and print the group storage type.
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try {
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if(group_id >= 0) {
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ginfo = H5.H5Gget_info(group_id);
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System.out.print("Group storage type for " + FILE1 + " is: ");
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switch (H5G_storage.get(ginfo.storage_type)) {
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case H5G_STORAGE_TYPE_COMPACT:
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System.out.println("H5G_STORAGE_TYPE_COMPACT"); // New compact format
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break;
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case H5G_STORAGE_TYPE_DENSE:
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System.out.println("H5G_STORAGE_TYPE_DENSE"); // New dense (indexed) format
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break;
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case H5G_STORAGE_TYPE_SYMBOL_TABLE:
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System.out.println("H5G_STORAGE_TYPE_SYMBOL_TABLE"); // Original format
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break;
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case H5G_STORAGE_TYPE_UNKNOWN:
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System.out.println("H5G_STORAGE_TYPE_UNKNOWN");
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break;
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default:
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System.out.println("Storage Type Invalid");
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break;
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}
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}
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Close the group.
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try {
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if (group_id >= 0)
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H5.H5Gclose(group_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// close the file 1.
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try {
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if (file_id >= 0)
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H5.H5Fclose(file_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Re-open file 1. Need to get the correct file size.
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try {
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file_id = H5.H5Fopen(FILE1, HDF5Constants.H5F_ACC_RDONLY, HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Obtain and print the file size.
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try {
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if (file_id >= 0) {
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size = H5.H5Fget_filesize(file_id);
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System.out.println("File size for " + FILE1 + " is: " + size + " bytes");
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}
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Close FILE1.
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try {
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if (file_id >= 0)
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H5.H5Fclose(file_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Set file access property list to allow the latest file format.
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// This will allow the library to create new compact format groups.
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try {
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fapl_id = H5.H5Pcreate(HDF5Constants.H5P_FILE_ACCESS);
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if (fapl_id >= 0)
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H5.H5Pset_libver_bounds(fapl_id, HDF5Constants.H5F_LIBVER_LATEST, HDF5Constants.H5F_LIBVER_LATEST);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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System.out.println();
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// Create file 2 using the new file access property list.
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try {
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file_id = H5.H5Fcreate(FILE2, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT, fapl_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Create group in file2.
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try {
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if(file_id >= 0)
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group_id = H5.H5Gcreate(file_id, GROUP, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Obtain the group info and print the group storage type.
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try {
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if (group_id >= 0) {
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ginfo = H5.H5Gget_info(group_id);
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System.out.print("Group storage type for " + FILE2 + " is: ");
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switch (H5G_storage.get(ginfo.storage_type)) {
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case H5G_STORAGE_TYPE_COMPACT:
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System.out.println("H5G_STORAGE_TYPE_COMPACT"); // New compact format
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break;
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case H5G_STORAGE_TYPE_DENSE:
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System.out.println("H5G_STORAGE_TYPE_DENSE"); // New dense (indexed) format
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break;
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case H5G_STORAGE_TYPE_SYMBOL_TABLE:
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System.out.println("H5G_STORAGE_TYPE_SYMBOL_TABLE"); // Original format
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break;
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case H5G_STORAGE_TYPE_UNKNOWN:
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System.out.println("H5G_STORAGE_TYPE_UNKNOWN");
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break;
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default:
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System.out.println("Storage Type Invalid");
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break;
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}
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}
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Close the group.
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try {
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if (group_id >= 0)
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H5.H5Gclose(group_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// close the file 2.
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try {
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if (file_id >= 0)
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H5.H5Fclose(file_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Re-open file 2. Needed to get the correct file size.
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try {
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file_id = H5.H5Fopen(FILE2, HDF5Constants.H5F_ACC_RDONLY, fapl_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Obtain and print the file size.
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try {
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if (file_id >= 0) {
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size = H5.H5Fget_filesize(file_id);
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System.out.println("File size for " + FILE2 + " is: " + size + " bytes");
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}
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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// Close FILE2.
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try {
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if (file_id >= 0)
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H5.H5Fclose(file_id);
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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}
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public static void main(String[] args) {
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H5Ex_G_Compact.CreateGroup();
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}
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}
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