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Diffstat (limited to 'doc/html/Tutor/examples/java/CreateDataset.java')
| -rw-r--r-- | doc/html/Tutor/examples/java/CreateDataset.java | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/doc/html/Tutor/examples/java/CreateDataset.java b/doc/html/Tutor/examples/java/CreateDataset.java new file mode 100644 index 0000000..05f3f6b --- /dev/null +++ b/doc/html/Tutor/examples/java/CreateDataset.java @@ -0,0 +1,210 @@ +/****************************************************************** + * CreateDataset.java (for HDF5 tutorial lesson 5) + * + * -- Creating a HDF5 Dataset + * (a java conversion from h5_crtdat.c) + * + ******************************************************************/ + +import ncsa.hdf.hdf5lib.*; +import ncsa.hdf.hdf5lib.exceptions.*; + +public class CreateDataset +{ + public static void main(String []argv) + { + final String FILE = "dset.h5"; + int file_id = -1; // file identifier + int dataset_id = -1; // dataset identifier + int dataspace_id = -1; // dataspace identifier + long[] dims = new long[2]; + int status = -1; + + // Create a new file using default properties. + file_id = H5Fcreate_wrap (FILE, HDF5Constants.H5F_ACC_TRUNC, + HDF5Constants.H5P_DEFAULT, + HDF5Constants.H5P_DEFAULT); + + // Create the data space for the dataset. + dims[0] = 4; + dims[1] = 6; + dataspace_id = H5Screate_simple_wrap (2, dims, null); + + // Create the dataset. + dataset_id = + H5Dcreate_wrap (file_id, "/dset", + H5.J2C (HDF5CDataTypes.JH5T_STD_I32BE), + dataspace_id, HDF5Constants.H5P_DEFAULT); + + // End access to the dataset and release resources used by it. + status = H5Dclose_wrap (dataset_id); + + // Terminate access to the data space. + status = H5Sclose_wrap (dataspace_id); + + // Close the file. + status = H5Fclose_wrap (file_id); + } + + + // Help function for creating a new file + public static int H5Fcreate_wrap (String name, int flags, + int create_id, int access_id) + { + int file_id = -1; // file identifier + try + { + // Create a new file using default file properties. + file_id = H5.H5Fcreate (name, flags, create_id, access_id); + } + catch (HDF5Exception hdf5e) + { + System.out.println + ("CreateDataset.H5Fcreate_wrap() with HDF5Exception: " + + hdf5e.getMessage()); + } + catch (Exception e) + { + System.out.println + ("CreateDataset.H5Fcreate_wrap() with other Exception: " + + e.getMessage()); + } + return file_id; + } + + + // Help function for creating a new simple dataspace and opening it + // for access + public static int H5Screate_simple_wrap (int rank, long dims[], + long maxdims[]) + { + int dataspace_id = -1; // dataspace identifier + + try + { + // Create the data space for the dataset. + dataspace_id = H5.H5Screate_simple (rank, dims, maxdims); + } + catch (HDF5Exception hdf5e) + { + System.out.println + ("CreateDataset.H5Screate_simple_wrap() with HDF5Exception: " + + hdf5e.getMessage()); + } + catch (Exception e) + { + System.out.println + ("CreateDataset.H5Screate_simple_wrap() with other Exception: " + + e.getMessage()); + } + return dataspace_id; + } + + + // Help function for creating a dataset + public static int H5Dcreate_wrap (int loc_id, String name, int type_id, + int space_id, int create_plist_id) + { + int dataset_id = -1; // dataset identifier + + try + { + // Create the dataset + dataset_id = H5.H5Dcreate (loc_id, name, type_id, space_id, + create_plist_id); + } + catch (HDF5Exception hdf5e) + { + System.out.println + ("CreateDataset.H5Dcreate_wrap() with HDF5Exception: " + + hdf5e.getMessage()); + } + catch (Exception e) + { + System.out.println + ("CreateDataset.H5Dcreate_wrap() with other Exception: " + + e.getMessage()); + } + return dataset_id; + } + + + // Help function for ending access to the dataset and releasing + // resources used by it. + public static int H5Dclose_wrap (int dataset_id) + { + int status = -1; + + try + { + // End access to the dataset and release resources used by it. + status = H5.H5Dclose (dataset_id); + } + catch (HDF5Exception hdf5e) + { + System.out.println + ("CreateDataset.H5Dclose_wrap() with HDF5Exception: " + + hdf5e.getMessage()); + } + catch (Exception e) + { + System.out.println + ("CreateDataset.H5Dclose_wrap() with other exception: " + + e.getMessage()); + } + return status; + } + + + // Help function for terminating access to the data space. + public static int H5Sclose_wrap (int dataspace_id) + { + int status = -1; + + try + { + // Terminate access to the data space. + status = H5.H5Sclose (dataspace_id); + } + catch (HDF5Exception hdf5e) + { + System.out.println + ("CreateDataset.H5Sclose_wrap() with HDF5Exception: " + + hdf5e.getMessage()); + } + catch (Exception e) + { + System.out.println + ("CreateDataset.H5Sclose_wrap() with other exception: " + + e.getMessage()); + } + return status; + } + + + // Help function for terminating access to the file. + public static int H5Fclose_wrap (int file_id) + { + int status = -1; + + try + { + // Terminate access to the file. + status = H5.H5Fclose (file_id); + } + catch (HDF5Exception hdf5e) + { + System.out.println + ("CreateDataset.H5Fclose_wrap() with HDF5Exception: " + + hdf5e.getMessage()); + } + catch (Exception e) + { + System.out.println + ("CreateDataset.H5Fclose_wrap() with other exception: " + + e.getMessage()); + } + return status; + } +} + |