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Diffstat (limited to 'java/examples/datatypes/H5Ex_T_Commit.java')
| -rw-r--r-- | java/examples/datatypes/H5Ex_T_Commit.java | 260 |
1 files changed, 0 insertions, 260 deletions
diff --git a/java/examples/datatypes/H5Ex_T_Commit.java b/java/examples/datatypes/H5Ex_T_Commit.java deleted file mode 100644 index 44586ef..0000000 --- a/java/examples/datatypes/H5Ex_T_Commit.java +++ /dev/null @@ -1,260 +0,0 @@ -/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * - * 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 commit a named datatype to a - file, and read back that datatype. The program first - defines a compound datatype, commits it to a file, then - closes the file. Next, it reopens the file, opens the - datatype, and outputs the names of its fields to the - screen. - ************************************************************/ - -package examples.datatypes; - -import java.util.EnumSet; -import java.util.HashMap; -import java.util.Map; - -import hdf.hdf5lib.H5; -import hdf.hdf5lib.HDF5Constants; - -public class H5Ex_T_Commit { - private static String FILENAME = "H5Ex_T_Commit.h5"; - private static String DATATYPENAME = "Sensor_Type"; - protected static final int INTEGERSIZE = 4; - protected static final int DOUBLESIZE = 8; - protected final static int MAXSTRINGSIZE = 80; - - // Values for the various classes of datatypes - enum H5T_class { - H5T_NO_CLASS(HDF5Constants.H5T_NO_CLASS), // error - H5T_INTEGER(HDF5Constants.H5T_INTEGER), // integer types - H5T_FLOAT(HDF5Constants.H5T_FLOAT), // floating-point types - H5T_TIME(HDF5Constants.H5T_TIME), // date and time types - H5T_STRING(HDF5Constants.H5T_STRING), // character string types - H5T_BITFIELD(HDF5Constants.H5T_BITFIELD), // bit field types - H5T_OPAQUE(HDF5Constants.H5T_OPAQUE), // opaque types - H5T_COMPOUND(HDF5Constants.H5T_COMPOUND), // compound types - H5T_REFERENCE(HDF5Constants.H5T_REFERENCE), // reference types - H5T_ENUM(HDF5Constants.H5T_ENUM), // enumeration types - H5T_VLEN(HDF5Constants.H5T_VLEN), // Variable-Length types - H5T_ARRAY(HDF5Constants.H5T_ARRAY), // Array types - H5T_NCLASSES(11); // this must be last - - private static final Map<Long, H5T_class> lookup = new HashMap<Long, H5T_class>(); - - static - { - for (H5T_class s : EnumSet.allOf(H5T_class.class)) - lookup.put(s.getCode(), s); - } - - private long code; - - H5T_class(long layout_type) { this.code = layout_type; } - - public long getCode() { return this.code; } - - public static H5T_class get(long typeclass_id) { return lookup.get(typeclass_id); } - } - - // The supporting Sensor_Datatype class. - private static class Sensor_Datatype { - static int numberMembers = 4; - static int[] memberDims = {1, 1, 1, 1}; - - String[] memberNames = {"Serial number", "Location", "Temperature (F)", "Pressure (inHg)"}; - long[] memberFileTypes = {HDF5Constants.H5T_STD_I32BE, HDF5Constants.H5T_C_S1, - HDF5Constants.H5T_IEEE_F64BE, HDF5Constants.H5T_IEEE_F64BE}; - static int[] memberStorage = {INTEGERSIZE, MAXSTRINGSIZE, DOUBLESIZE, DOUBLESIZE}; - - // Data size is the storage size for the members not the object. - static long getDataSize() - { - long data_size = 0; - for (int indx = 0; indx < numberMembers; indx++) - data_size += memberStorage[indx] * memberDims[indx]; - return data_size; - } - - static int getOffset(int memberItem) - { - int data_offset = 0; - for (int indx = 0; indx < memberItem; indx++) - data_offset += memberStorage[indx]; - return data_offset; - } - } - - private static void CreateDataType() - { - long file_id = HDF5Constants.H5I_INVALID_HID; - long strtype_id = HDF5Constants.H5I_INVALID_HID; - long filetype_id = HDF5Constants.H5I_INVALID_HID; - Sensor_Datatype datatypes = new Sensor_Datatype(); - // Create a new file using default properties. - try { - file_id = H5.H5Fcreate(FILENAME, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT, - HDF5Constants.H5P_DEFAULT); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Create string datatype. - try { - strtype_id = H5.H5Tcopy(HDF5Constants.H5T_C_S1); - if (strtype_id >= 0) - H5.H5Tset_size(strtype_id, MAXSTRINGSIZE); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Create the compound datatype for the file. Because the standard - // types we are using for the file may have different sizes than - // the corresponding native types, we must manually calculate the - // offset of each member. - try { - filetype_id = H5.H5Tcreate(HDF5Constants.H5T_COMPOUND, Sensor_Datatype.getDataSize()); - if (filetype_id >= 0) { - for (int indx = 0; indx < Sensor_Datatype.numberMembers; indx++) { - long type_id = datatypes.memberFileTypes[indx]; - if (type_id == HDF5Constants.H5T_C_S1) - type_id = strtype_id; - H5.H5Tinsert(filetype_id, datatypes.memberNames[indx], Sensor_Datatype.getOffset(indx), - type_id); - } - } - } - catch (Exception e) { - e.printStackTrace(); - } - - // Commit the compound datatype to the file, creating a named datatype. - try { - if ((file_id >= 0) && (filetype_id >= 0)) - H5.H5Tcommit(file_id, DATATYPENAME, filetype_id, HDF5Constants.H5P_DEFAULT, - HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Terminate access to the file type. - try { - if (filetype_id >= 0) - H5.H5Tclose(filetype_id); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Terminate access to the str type. - try { - if (strtype_id >= 0) - H5.H5Tclose(strtype_id); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Close the file. - try { - if (file_id >= 0) - H5.H5Fclose(file_id); - } - catch (Exception e) { - e.printStackTrace(); - } - } - - private static void ReadDataType() - { - long file_id = HDF5Constants.H5I_INVALID_HID; - long typeclass_id = HDF5Constants.H5I_INVALID_HID; - long filetype_id = HDF5Constants.H5I_INVALID_HID; - - // Open an existing file. - try { - file_id = H5.H5Fopen(FILENAME, HDF5Constants.H5F_ACC_RDONLY, HDF5Constants.H5P_DEFAULT); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Open named datatype. - try { - if (file_id >= 0) - filetype_id = H5.H5Topen(file_id, DATATYPENAME, HDF5Constants.H5P_DEFAULT); - } - catch (Exception e) { - e.printStackTrace(); - } - - // Output the data to the screen. - System.out.println("Named datatype: " + DATATYPENAME + ":"); - - // Get datatype class. If it isn't compound, we won't print anything. - try { - if (filetype_id >= 0) - typeclass_id = H5.H5Tget_class(filetype_id); - } - catch (Exception e) { - e.printStackTrace(); - } - // Read data. - try { - if (H5T_class.get(typeclass_id) == H5T_class.H5T_COMPOUND) { - System.out.println(" Class: H5T_COMPOUND"); - int nmembs = H5.H5Tget_nmembers(filetype_id); - // Iterate over compound datatype members. - for (int indx = 0; indx < nmembs; indx++) { - String member_name = H5.H5Tget_member_name(filetype_id, indx); - System.out.println(" " + member_name); - } - } - } - catch (Exception e) { - e.printStackTrace(); - } - - // Terminate access to the mem type. - try { - if (filetype_id >= 0) - H5.H5Tclose(filetype_id); - } - 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) - { - H5Ex_T_Commit.CreateDataType(); - // Now we begin the read section of this example. Here we assume - // the dataset and array have the same name and rank, but can have - // any size. Therefore we must allocate a new array to read in - // data using malloc(). - H5Ex_T_Commit.ReadDataType(); - } -} |