[svn-r3562] Add to tutorial
Purpose:
[is this a bug fix? feature? ...]
Description:
[describe the bug, or describe the new feature, etc]
Solution:
[details about the changes, algorithm, etc...]
[Please as detail as you can since your own explanation is
better than others guessing it from the code.]
Platforms tested:
[machines you have tested the changed version. This is absolute
important. Test it out on at least two or three different platforms
such as Big-endian-32bit (SUN/IRIX), little-endian-32(LINUX) and
64-bit (IRIX64/UNICOS/DEC-ALPHA) would be good.]
This commit is contained in:
Barbara Jones
540
doc/html/Tutor/examples/java/Compound.java
Normal file
540
doc/html/Tutor/examples/java/Compound.java
Normal file
@@ -0,0 +1,540 @@
|
||||
/******************************************************************
|
||||
* Compound.java (for HDF5 tutorial lesson 11)
|
||||
*
|
||||
* -- Creating a compound data type
|
||||
* (a java conversion from compound.c)
|
||||
*
|
||||
******************************************************************/
|
||||
|
||||
import ncsa.hdf.hdf5lib.*;
|
||||
import ncsa.hdf.hdf5lib.exceptions.*;
|
||||
|
||||
public class Compound
|
||||
{
|
||||
public static void main (String []argv)
|
||||
{
|
||||
final String FILE = "SDScompound.h5";
|
||||
final String DATASETNAME = "ArrayOfStructures";
|
||||
final int LENGTH = 10;
|
||||
final int RANK = 1;
|
||||
|
||||
/* First structure and dataset */
|
||||
/* an array of LENGTH 'complex' numbers */
|
||||
byte[] data1 = new byte[LENGTH * 16];
|
||||
|
||||
int[] AR = new int[1];
|
||||
float[] BR = new float[1];
|
||||
double[] CR = new double[1];
|
||||
|
||||
byte [] ARec = new byte[4];
|
||||
byte [] BRec = new byte[4];
|
||||
byte [] CRec = new byte[8];
|
||||
|
||||
int s1_tid; /* File datatype identifier */
|
||||
|
||||
/* Second structure (subset of s1_t) and dataset*/
|
||||
byte[] data2 = new byte[LENGTH * 12];
|
||||
int s2_tid; /* Memory datatype handle */
|
||||
|
||||
/* Third "structure" ( will be used to read float field of s1) */
|
||||
int s3_tid; /* Memory datatype handle */
|
||||
float[] s3 = new float[LENGTH];
|
||||
|
||||
int i;
|
||||
int file, dataset, space; /* Handles */
|
||||
int status;
|
||||
long[] dim = new long[1]; /* Dataspace dimensions */
|
||||
dim[0] = LENGTH;
|
||||
|
||||
/*
|
||||
* Initialize the data
|
||||
*/
|
||||
for (i = 0; i < LENGTH; i++)
|
||||
{
|
||||
AR[0] = (int) i;
|
||||
BR[0] = (float) i * i;
|
||||
CR[0] = (double) 1. / (i + 1);
|
||||
|
||||
ARec = HDFNativeData.intToByte (0, 1, AR);
|
||||
BRec = HDFNativeData.floatToByte (0, 1, BR);
|
||||
CRec = HDFNativeData.doubleToByte (0, 1, CR);
|
||||
|
||||
System.arraycopy (ARec, 0, data1, (i * 16), 4);
|
||||
System.arraycopy (BRec, 0, data1, (i * 16) + 4, 4);
|
||||
System.arraycopy (CRec, 0, data1, (i * 16) + 8, 8);
|
||||
}
|
||||
|
||||
/*
|
||||
* Create the data space.
|
||||
*/
|
||||
space = H5Screate_simple_wrap (RANK, dim, null);
|
||||
|
||||
/*
|
||||
* Create the file.
|
||||
*/
|
||||
file = H5Fcreate_wrap (FILE, HDF5Constants.H5F_ACC_TRUNC,
|
||||
HDF5Constants.H5P_DEFAULT,
|
||||
HDF5Constants.H5P_DEFAULT);
|
||||
|
||||
/*
|
||||
* Create the memory data type.
|
||||
*/
|
||||
s1_tid = H5Tcreate_wrap (HDF5Constants.H5T_COMPOUND, 16);
|
||||
H5Tinsert_wrap (s1_tid, "a_name", 0,
|
||||
H5.J2C (HDF5CDataTypes.JH5T_NATIVE_INT));
|
||||
H5Tinsert_wrap (s1_tid, "b_name", 4,
|
||||
H5.J2C (HDF5CDataTypes.JH5T_NATIVE_FLOAT));
|
||||
H5Tinsert_wrap (s1_tid, "c_name", 8,
|
||||
H5.J2C (HDF5CDataTypes.JH5T_NATIVE_DOUBLE));
|
||||
|
||||
/*
|
||||
* Create the dataset.
|
||||
*/
|
||||
dataset = H5Dcreate_wrap (file, DATASETNAME, s1_tid,
|
||||
space, HDF5Constants.H5P_DEFAULT);
|
||||
|
||||
/*
|
||||
* Wtite data to the dataset;
|
||||
*/
|
||||
status = H5Dwrite_wrap (dataset, s1_tid,
|
||||
HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
|
||||
HDF5Constants.H5P_DEFAULT, data1);
|
||||
|
||||
/*
|
||||
* Release resources
|
||||
*/
|
||||
H5Tclose_wrap (s1_tid);
|
||||
H5Sclose_wrap (space);
|
||||
H5Dclose_wrap (dataset);
|
||||
H5Fclose_wrap (file);
|
||||
|
||||
/*
|
||||
* Open the file and the dataset.
|
||||
*/
|
||||
file = H5Fopen_wrap (FILE, HDF5Constants.H5F_ACC_RDONLY,
|
||||
HDF5Constants.H5P_DEFAULT);
|
||||
|
||||
dataset = H5Dopen_wrap (file, DATASETNAME);
|
||||
|
||||
/*
|
||||
* Create a data type for s2
|
||||
*/
|
||||
s2_tid = H5Tcreate_wrap (HDF5Constants.H5T_COMPOUND, 12);
|
||||
H5Tinsert_wrap (s2_tid, "c_name", 0,
|
||||
H5.J2C (HDF5CDataTypes.JH5T_NATIVE_DOUBLE));
|
||||
H5Tinsert_wrap (s2_tid, "a_name", 8,
|
||||
H5.J2C (HDF5CDataTypes.JH5T_NATIVE_INT));
|
||||
|
||||
/*
|
||||
* Read two fields c and a from s1 dataset. Fields in the file
|
||||
* are found by their names "c_name" and "a_name".
|
||||
*/
|
||||
status = H5Dread_wrap (dataset, s2_tid, HDF5Constants.H5S_ALL,
|
||||
HDF5Constants.H5S_ALL,
|
||||
HDF5Constants.H5P_DEFAULT, data2);
|
||||
|
||||
/*
|
||||
* Display the fields. Convert from bytes into numbers.
|
||||
*/
|
||||
System.out.println ("\nField c : ");
|
||||
for( i = 0; i < LENGTH; i++) {
|
||||
System.arraycopy (data2, (i*12), CRec, 0, 8);
|
||||
CR = HDFNativeData.byteToDouble(0, 1, CRec);
|
||||
System.out.print (CR[0]+" ");
|
||||
}
|
||||
System.out.println ();
|
||||
|
||||
System.out.println("\nField a :");
|
||||
for( i = 0; i < LENGTH; i++) {
|
||||
System.arraycopy (data2, (i*12)+8, ARec, 0, 4);
|
||||
AR = HDFNativeData.byteToInt(0, 1, ARec);
|
||||
System.out.print (AR[0]+" ");
|
||||
}
|
||||
System.out.println ();
|
||||
|
||||
/*
|
||||
* Create a data type for s3.
|
||||
*/
|
||||
s3_tid = H5Tcreate_wrap (HDF5Constants.H5T_COMPOUND, 4);
|
||||
|
||||
status =
|
||||
H5Tinsert_wrap (s3_tid, "b_name", 0,
|
||||
H5.J2C (HDF5CDataTypes.JH5T_NATIVE_FLOAT));
|
||||
|
||||
/*
|
||||
* Read field b from s1 dataset. Field in the file is found by its name.
|
||||
*/
|
||||
status = H5Dread_wrap (dataset, s3_tid, HDF5Constants.H5S_ALL,
|
||||
HDF5Constants.H5S_ALL,
|
||||
HDF5Constants.H5P_DEFAULT, s3);
|
||||
|
||||
/*
|
||||
* Display the field. Data is read directly into array of 'float'.
|
||||
*/
|
||||
System.out.println ();
|
||||
System.out.println ("Field b :");
|
||||
for( i = 0; i < LENGTH; i++) {
|
||||
System.out.print (s3[i]+" ");
|
||||
}
|
||||
System.out.println ();
|
||||
|
||||
/*
|
||||
* Release resources
|
||||
*/
|
||||
H5Tclose_wrap (s2_tid);
|
||||
H5Tclose_wrap (s3_tid);
|
||||
H5Dclose_wrap (dataset);
|
||||
H5Fclose_wrap (file);
|
||||
}
|
||||
|
||||
|
||||
// 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
|
||||
("Compound.H5Fcreate_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Fcreate_wrap() with other Exception: "
|
||||
+ e.getMessage());
|
||||
}
|
||||
return file_id;
|
||||
}
|
||||
|
||||
|
||||
// Help function for adding another member to the compound
|
||||
// datatype datatype_id.
|
||||
public static int H5Tinsert_wrap (int type_id, String name,
|
||||
long offset, int field_id)
|
||||
{
|
||||
int status = -1;
|
||||
try
|
||||
{
|
||||
// Adding another member to the compound datatype datatype_id.
|
||||
status = H5.H5Tinsert (type_id, name, offset, field_id);
|
||||
|
||||
}
|
||||
catch (HDF5Exception hdf5e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Tinsert_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Tinsert_wrap() with HDF5Exception: "
|
||||
+ e.getMessage());
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
// Help function for creating the memory data type.
|
||||
public static int H5Tcreate_wrap (int dclass, int size)
|
||||
{
|
||||
int datatype_id = -1; // memory data type identifier
|
||||
try
|
||||
{
|
||||
// Create the memory data type.
|
||||
datatype_id = H5.H5Tcreate (dclass, size);
|
||||
|
||||
}
|
||||
catch (HDF5Exception hdf5e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Tcreate_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Tcreate_wrap() with other Exception: "
|
||||
+ e.getMessage());
|
||||
}
|
||||
return datatype_id;
|
||||
}
|
||||
|
||||
|
||||
// Help function for opening an existing file
|
||||
public static int H5Fopen_wrap (String name, int flags, int access_id)
|
||||
{
|
||||
int file_id = -1; // file identifier
|
||||
try
|
||||
{
|
||||
// Create a new file using default file properties.
|
||||
file_id = H5.H5Fopen (name, flags, access_id);
|
||||
}
|
||||
catch (HDF5Exception hdf5e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Fopen_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Fopen_wrap() with other Exception: "
|
||||
+ e.getMessage());
|
||||
}
|
||||
return file_id;
|
||||
}
|
||||
|
||||
|
||||
// Help function for opening an existing dataset
|
||||
public static int H5Dopen_wrap (int loc_id, String name)
|
||||
{
|
||||
int dataset_id = -1; // dataset identifier
|
||||
|
||||
try
|
||||
{
|
||||
// Opening an existing dataset
|
||||
dataset_id = H5.H5Dopen (loc_id, name);
|
||||
}
|
||||
catch (HDF5Exception hdf5e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Dopen_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Dopen_wrap() with other Exception: "
|
||||
+ e.getMessage());
|
||||
}
|
||||
return dataset_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
|
||||
("Compound.H5Screate_simple_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.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
|
||||
("Compound.H5Dcreate_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Dcreate_wrap() with other Exception: "
|
||||
+ e.getMessage());
|
||||
}
|
||||
return dataset_id;
|
||||
}
|
||||
|
||||
|
||||
// Help function for writing the dataset
|
||||
public static int H5Dwrite_wrap (int dataset_id, int mem_type_id,
|
||||
int mem_space_id, int file_space_id,
|
||||
int xfer_plist_id, Object buf)
|
||||
{
|
||||
int status = -1;
|
||||
|
||||
try
|
||||
{
|
||||
// Write the dataset.
|
||||
status = H5.H5Dwrite (dataset_id, mem_type_id, mem_space_id,
|
||||
file_space_id, xfer_plist_id, buf);
|
||||
}
|
||||
catch (HDF5Exception hdf5e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Dwrite_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Dwrite_wrap() with other exception: "
|
||||
+ e.getMessage());
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
// Help function for reading the dataset
|
||||
public static int H5Dread_wrap (int dataset_id, int mem_type_id,
|
||||
int mem_space_id, int file_space_id,
|
||||
int xfer_plist_id, Object obj)
|
||||
{
|
||||
int status = -1;
|
||||
|
||||
try
|
||||
{
|
||||
// Read the dataset.
|
||||
status = H5.H5Dread (dataset_id, mem_type_id, mem_space_id,
|
||||
file_space_id, xfer_plist_id, obj);
|
||||
}
|
||||
catch (HDF5Exception hdf5e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Dread_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Dread_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
|
||||
("Compound.H5Sclose_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Sclose_wrap() with other exception: "
|
||||
+ e.getMessage());
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
// Help function for releasing a datatype.
|
||||
public static int H5Tclose_wrap (int type_id)
|
||||
{
|
||||
int status = -1;
|
||||
|
||||
try
|
||||
{
|
||||
// Releasing a datatype.
|
||||
status = H5.H5Tclose (type_id);
|
||||
}
|
||||
catch (HDF5Exception hdf5e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Tclose_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Tclose_wrap() with other exception: "
|
||||
+ e.getMessage());
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
// 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
|
||||
("Compound.H5Dclose_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Dclose_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
|
||||
("Compound.H5Fclose_wrap() with HDF5Exception: "
|
||||
+ hdf5e.getMessage());
|
||||
}
|
||||
catch (Exception e)
|
||||
{
|
||||
System.out.println
|
||||
("Compound.H5Fclose_wrap() with other exception: "
|
||||
+ e.getMessage());
|
||||
}
|
||||
return status;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user