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/****************************************************************************
* NCSA HDF *
* National Comptational Science Alliance *
* University of Illinois at Urbana-Champaign *
* 605 E. Springfield, Champaign IL 61820 *
* *
* For conditions of distribution and use, see the accompanying *
* hdf-java/COPYING file. *
* *
****************************************************************************/
package test.object.misc;
import java.lang.reflect.Array;
import java.util.Enumeration;
import java.util.List;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreeNode;
import ncsa.hdf.hdf5lib.HDF5Constants;
import ncsa.hdf.object.Attribute;
import ncsa.hdf.object.h5.H5CompoundDS;
import ncsa.hdf.object.h5.H5File;
import ncsa.hdf.object.h5.H5Group;
import ncsa.hdf.object.h5.H5ScalarDS;
/**
* Test object at the ncsa.hdf.object package.
* <p>
*
* @version 1.3.0 10/26/2001
* @author Peter X. Cao
*
*/
public class TestH5File
{
/**
* Test tree structure of the HDF5 file.
* <p>
* Tested with a large file (over 700MB, over 800 datasets) at
* \\Eirene\sdt\mcgrath\EOS-Data\MODIS\L3\MOD08_E3.A2000337.002.2001037044240.h5
* it takes about 5 seconds to retrieve the tree structure through the network.
* Accessing local file can be a lot of faster.
*/
private static void testTree(String fileName)
{
H5File h5file = new H5File(fileName, HDF5Constants.H5F_ACC_RDONLY);
long t0 = System.currentTimeMillis();
try {
h5file.open();
} catch (Exception ex)
{
System.out.println(ex);
}
long t = System.currentTimeMillis()-t0;
System.out.println("Time of retrieving the tree is "+t);
TreeNode root = h5file.getRootNode();
if (root != null)
{
printNode(root, " ");
}
try {
h5file.close();
} catch (Exception ex)
{
System.out.println(ex);
}
}
private static void printNode(TreeNode node, String indent)
{
System.out.println(indent+node);
int n = node.getChildCount();
for (int i=0; i<n; i++)
{
printNode(node.getChildAt(i), indent+" ");
}
}
/**
* Test H5CompoundDS.
*/
private static void testH5CompoundDS(String fileName)
{
H5File h5file = new H5File(fileName, HDF5Constants.H5F_ACC_RDONLY);
try {
h5file.open();
} catch (Exception ex)
{
System.out.println(ex);
}
DefaultMutableTreeNode root = (DefaultMutableTreeNode)h5file.getRootNode();
H5CompoundDS h5DS = null;
DefaultMutableTreeNode node = null;
if (root != null)
{
Enumeration nodes = root.depthFirstEnumeration();
while (nodes.hasMoreElements())
{
node = (DefaultMutableTreeNode)nodes.nextElement();
Object obj = node.getUserObject();
if (obj instanceof H5CompoundDS)
{
h5DS = (H5CompoundDS)obj;
System.out.println(h5DS);
// test H5CompoundDS attributes
Attribute attr = null;
List info = null;
try { info = h5DS.getMetadata(); }
catch (Exception ex) { System.out.println(ex); }
int n = 0;
if (info != null)
{
n = info.size();
for (int i=0; i<n; i++)
{
attr = (Attribute)info.get(i);
System.out.println(attr);
}
}
// compound members
int rank = h5DS.getRank();
if (rank <=0 ) {
h5DS.init();
}
n = h5DS.getMemberCount();
String[] names = h5DS.getMemberNames();
for (int i=0; i<n; i++)
{
System.out.println(names[i]);
}
// compound data
List list = null;
try {
list = (List)h5DS.read();
} catch (Exception ex) { System.out.println(ex);}
if (list != null)
{
n = list.size();
Object mdata = null;
for (int i=0; i<n; i++)
{
mdata = list.get(i);
if (mdata.getClass().isArray())
{
StringBuffer sb = new StringBuffer();
// print out the first 1000 data points
int mn = Math.min(Array.getLength(mdata), 1000);
for (int j=0; j<mn; j++)
{
sb.append(Array.get(mdata, j));
sb.append(" ");
}
System.out.println(sb.toString());
}
} // for (int i=0; i<n; i++)
} // if (list != null)
} //if (obj instanceof H5CompoundDS
} //while (nodes.hasMoreElements())
} //if (root != null)
try {
h5file.close();
} catch (Exception ex)
{
System.out.println(ex);
}
}
/**
* Test H5ScalarDS.
*/
private static void testH5ScalarDS(String fileName)
{
H5File h5file = new H5File(fileName, HDF5Constants.H5F_ACC_RDONLY);
try {
h5file.open();
} catch (Exception ex)
{
System.out.println(ex);
}
DefaultMutableTreeNode root = (DefaultMutableTreeNode)h5file.getRootNode();
H5ScalarDS h5DS = null;
DefaultMutableTreeNode node = null;
if (root != null)
{
Enumeration nodes = root.depthFirstEnumeration();
while (nodes.hasMoreElements())
{
node = (DefaultMutableTreeNode)nodes.nextElement();
Object obj = node.getUserObject();
if (obj instanceof H5ScalarDS)
{
h5DS = (H5ScalarDS)obj;
System.out.println(h5DS);
// test H5CompoundDS attributes
Attribute attr = null;
List info = null;
try { info = h5DS.getMetadata(); }
catch (Exception ex) {System.out.println(ex);}
int n = 0;
if (info != null)
{
n = info.size();
for (int i=0; i<n; i++)
{
attr = (Attribute)info.get(i);
System.out.println(attr);
}
}
// data
Object data = null;
try
{
data = h5DS.read();
} catch (Exception ex) {}
if ((data != null) && data.getClass().isArray())
{
// print out the first 1000 data points
n = Math.min(Array.getLength(data), 1000);
StringBuffer sb = new StringBuffer();
for (int j=0; j<n; j++)
{
sb.append(Array.get(data, j));
sb.append(" ");
}
System.out.println(sb.toString());
}
} //if (obj instanceof H5CompoundDS
} //while (nodes.hasMoreElements())
} //if (root != null)
try {
h5file.close();
} catch (Exception ex)
{
System.out.println(ex);
}
}
/**
* Test H5Group.
*/
private static void testH5Group(String fileName)
{
H5File h5file = new H5File(fileName, HDF5Constants.H5F_ACC_RDONLY);
try {
h5file.open();
} catch (Exception ex)
{
System.out.println(ex);
}
DefaultMutableTreeNode root = (DefaultMutableTreeNode)h5file.getRootNode();
H5Group g = null;
DefaultMutableTreeNode node = null;
if (root != null)
{
Enumeration nodes = root.depthFirstEnumeration();
while (nodes.hasMoreElements())
{
node = (DefaultMutableTreeNode)nodes.nextElement();
Object obj = node.getUserObject();
if (obj instanceof H5Group)
{
g = (H5Group)obj;
System.out.println(g);
// test H5CompoundDS attributes
Attribute attr = null;
List info = null;
try { g.getMetadata(); }
catch (Exception ex) { System.out.println(ex); }
if (info == null) {
continue;
}
int n = info.size();
for (int i=0; i<n; i++)
{
attr = (Attribute)info.get(i);
System.out.println(attr);
}
} //if (obj instanceof H5Group
} //while (nodes.hasMoreElements())
} //if (root != null)
try {
h5file.close();
} catch (Exception ex)
{
System.out.println(ex);
}
}
public static void main(String[] argv)
{
int argc = argv.length;
if (argc <=0)
{
System.exit(1);
}
System.out.println("Tree: for: "+argv[0]);
TestH5File.testTree(argv[0]);
}
}
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