hdf5/java/test/TestH5PData.java

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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.                                                        *
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package test;

import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.io.File;
import java.text.DecimalFormat;
import java.text.NumberFormat;

import hdf.hdf5lib.H5;
import hdf.hdf5lib.HDF5Constants;
import hdf.hdf5lib.exceptions.HDF5Exception;
import hdf.hdf5lib.exceptions.HDF5LibraryException;

import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestName;

public class TestH5PData {
    @Rule
    public TestName testname = new TestName();

    private static final String H5_FILE = "testPD.h5";
    private static final int DIM_X      = 12;
    private static final int DIM_Y      = 18;
    long H5fid                          = HDF5Constants.H5I_INVALID_HID;
    long H5dsid                         = HDF5Constants.H5I_INVALID_HID;
    long H5did                          = HDF5Constants.H5I_INVALID_HID;
    long plist_id                       = HDF5Constants.H5I_INVALID_HID;
    long[] H5dims                       = {DIM_X, DIM_Y};
    double windchillF[][] = {{36.0, 31.0, 25.0, 19.0, 13.0, 7.0, 1.0, -5.0, -11.0, -16.0, -22.0, -28.0, -34.0,
                              -40.0, -46.0, -52.0, -57.0, -63.0},
                             {34.0, 27.0, 21.0, 15.0, 9.0, 3.0, -4.0, -10.0, -16.0, -22.0, -28.0, -35.0,
                              -41.0, -47.0, -53.0, -59.0, -66.0, -72.0},
                             {32.0, 25.0, 19.0, 13.0, 6.0, 0.0, -7.0, -13.0, -19.0, -26.0, -32.0, -39.0,
                              -45.0, -51.0, -58.0, -64.0, -71.0, -77.0},
                             {30.0, 24.0, 17.0, 11.0, 4.0, -2.0, -9.0, -15.0, -22.0, -29.0, -35.0, -42.0,
                              -48.0, -55.0, -61.0, -68.0, -74.0, -81.0},
                             {29.0, 23.0, 16.0, 9.0, 3.0, -4.0, -11.0, -17.0, -24.0, -31.0, -37.0, -44.0,
                              -51.0, -58.0, -64.0, -71.0, -78.0, -84.0},
                             {28.0, 22.0, 15.0, 8.0, 1.0, -5.0, -12.0, -19.0, -26.0, -33.0, -39.0, -46.0,
                              -53.0, -60.0, -67.0, -73.0, -80.0, -87.0},
                             {28.0, 21.0, 14.0, 7.0, 0.0, -7.0, -14.0, -21.0, -27.0, -34.0, -41.0, -48.0,
                              -55.0, -62.0, -69.0, -76.0, -82.0, -89.0},
                             {27.0, 20.0, 13.0, 6.0, -1.0, -8.0, -15.0, -22.0, -29.0, -36.0, -43.0, -50.0,
                              -57.0, -64.0, -71.0, -78.0, -84.0, -91.0},
                             {26.0, 19.0, 12.0, 5.0, -2.0, -9.0, -16.0, -23.0, -30.0, -37.0, -44.0, -51.0,
                              -58.0, -65.0, -72.0, -79.0, -86.0, -93.0},
                             {26.0, 19.0, 12.0, 4.0, -3.0, -10.0, -17.0, -24.0, -31.0, -38.0, -45.0, -52.0,
                              -60.0, -67.0, -74.0, -81.0, -88.0, -95.0},
                             {25.0, 18.0, 11.0, 4.0, -3.0, -11.0, -18.0, -25.0, -32.0, -39.0, -46.0, -54.0,
                              -61.0, -68.0, -75.0, -82.0, -89.0, -97.0},
                             {25.0, 17.0, 10.0, 3.0, -4.0, -11.0, -19.0, -26.0, -33.0, -40.0, -48.0, -55.0,
                              -62.0, -69.0, -76.0, -84.0, -91.0, -98.0}};

    private final void _deleteFile(String filename)
    {
        File file = new File(filename);

        if (file.exists()) {
            try {
                file.delete();
            }
            catch (SecurityException e) {
            }
        }
    }

    private final long _createFloatDataset(long fid, long dsid, String name, long dapl)
    {
        long did = HDF5Constants.H5I_INVALID_HID;
        try {
            did = H5.H5Dcreate(fid, name, HDF5Constants.H5T_NATIVE_FLOAT, dsid, HDF5Constants.H5P_DEFAULT,
                               HDF5Constants.H5P_DEFAULT, dapl);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5.H5Dcreate: " + err);
        }
        assertTrue("TestH5PData._createFloatDataset: ", did > 0);

        return did;
    }

    @Before
    public void createH5file() throws NullPointerException, HDF5Exception
    {
        assertTrue("H5 open ids is 0", H5.getOpenIDCount() == 0);
        System.out.print(testname.getMethodName());

        try {
            H5fid    = H5.H5Fcreate(H5_FILE, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
                                    HDF5Constants.H5P_DEFAULT);
            H5dsid   = H5.H5Screate_simple(2, H5dims, null);
            H5did    = _createFloatDataset(H5fid, H5dsid, "dset", HDF5Constants.H5P_DEFAULT);
            plist_id = H5.H5Pcreate(HDF5Constants.H5P_DATASET_XFER);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5PData.createH5file: " + err);
        }
        assertTrue("TestH5PData.createH5file: H5.H5Fcreate: ", H5fid > 0);
        assertTrue("TestH5PData.createH5file: H5.H5Screate_simple: ", H5dsid > 0);
        assertTrue("TestH5PData.createH5file: _createFloatDataset: ", H5did > 0);
        assertTrue(plist_id > 0);

        H5.H5Fflush(H5fid, HDF5Constants.H5F_SCOPE_LOCAL);
    }

    @After
    public void deleteH5file() throws HDF5LibraryException
    {
        if (H5dsid > 0)
            try {
                H5.H5Sclose(H5dsid);
            }
            catch (Exception ex) {
            }
        if (H5did > 0)
            try {
                H5.H5Dclose(H5did);
            }
            catch (Exception ex) {
            }
        if (H5fid > 0)
            try {
                H5.H5Fclose(H5fid);
            }
            catch (Exception ex) {
            }

        _deleteFile(H5_FILE);

        if (plist_id > 0)
            try {
                H5.H5Pclose(plist_id);
            }
            catch (Exception ex) {
            }
        System.out.println();
    }

    @Test
    public void testH5Pdata_transform()
    {
        String f_to_c             = "(5/9.0)*(x-32)";
        double windchillFread[][] = new double[DIM_X][DIM_Y];
        double windchillC;
        NumberFormat formatter = new DecimalFormat("#0.000");

        try {
            H5.H5Pset_data_transform(plist_id, f_to_c);
            H5.H5Dwrite(H5did, HDF5Constants.H5T_NATIVE_DOUBLE, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
                        plist_id, windchillF);
            H5.H5Dread(H5did, HDF5Constants.H5T_NATIVE_DOUBLE, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
                       HDF5Constants.H5P_DEFAULT, windchillFread);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5Pdata_transform: " + err);
        }
        for (int row = 0; row < DIM_X; row++)
            for (int col = 0; col < DIM_Y; col++) {
                windchillC   = (5 / 9.0) * (windchillF[row][col] - 32);
                String Cstr  = formatter.format(windchillC);
                String Fread = formatter.format(windchillFread[row][col]);
                assertTrue("H5Pdata_transform: <" + row + "," + col + ">" + Fread + "=" + Cstr,
                           Fread.compareTo(Cstr) == 0);
            }
    }

    @Test
    public void testH5P_buffer()
    {
        long default_size = 0;
        long size         = 0;

        try {
            default_size = H5.H5Pget_buffer_size(plist_id);
            H5.H5Pset_buffer_size(plist_id, DIM_X * DIM_Y);
            size = H5.H5Pget_buffer_size(plist_id);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5P_buffer fail: " + err);
        }
        assertTrue("H5P_buffer default: " + default_size, default_size == 1024 * 1024);
        assertTrue("H5P_buffer size: " + size, size == DIM_X * DIM_Y);
    }
}