1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/************************************************************
This example shows how to iterate over group members using
H5Gget_obj_info_all.
This file is intended for use with HDF5 Library verion 1.6
************************************************************/
package examples.groups;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import ncsa.hdf.hdf5lib.H5;
import ncsa.hdf.hdf5lib.structs.H5O_info_t;
import ncsa.hdf.object.FileFormat;
import ncsa.hdf.object.HObject;
import ncsa.hdf.object.h5.H5File;
import ncsa.hdf.object.h5.H5Group;
public class H5ObjectEx_G_Iterate {
private static String FILENAME = "groups/h5ex_g_iterate.h5";
private static String DATASETNAME = "/";
enum H5O_type {
H5O_TYPE_UNKNOWN(-1), // Unknown object type
H5O_TYPE_GROUP(0), // Object is a group
H5O_TYPE_DATASET(1), // Object is a dataset
H5O_TYPE_NAMED_DATATYPE(2), // Object is a named data type
H5O_TYPE_NTYPES(3); // Number of different object types
private static final Map<Integer, H5O_type> lookup = new HashMap<Integer, H5O_type>();
static {
for (H5O_type s : EnumSet.allOf(H5O_type.class))
lookup.put(s.getCode(), s);
}
private int code;
H5O_type(int layout_type) {
this.code = layout_type;
}
public int getCode() {
return this.code;
}
public static H5O_type get(int code) {
return lookup.get(code);
}
}
private static void do_iterate() {
H5File file = null;
int o_id = -1;
// Open a file using default properties.
try {
file = new H5File(FILENAME, FileFormat.READ);
}
catch (Exception e) {
e.printStackTrace();
}
// Begin iteration.
System.out.println("Objects in root group:");
try {
int objType;
H5O_info_t info;
HObject obj = null;
H5Group grp = (H5Group)file.get(DATASETNAME);
List<HObject> memberList = grp.getMemberList();
Iterator<HObject> it = memberList.iterator();
while (it.hasNext()) {
obj = it.next();
o_id = obj.open();
if (o_id >= 0) {
info = H5.H5Oget_info(o_id);
objType = info.type;
// Get type of the object and display its name and type.
switch (H5O_type.get(objType)) {
case H5O_TYPE_GROUP:
System.out.println(" Group: " + obj.getName());
break;
case H5O_TYPE_DATASET:
System.out.println(" Dataset: " + obj.getName());
break;
case H5O_TYPE_NAMED_DATATYPE:
System.out.println(" Datatype: " + obj.getName());
break;
default:
System.out.println(" Unknown: " + obj.getName());
}
obj.close(o_id);
}
}
}
catch (Exception e) {
e.printStackTrace();
}
// Close the file.
try {
file.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
H5ObjectEx_G_Iterate.do_iterate();
}
}
|
