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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
<html>
<head><title>
HDF5/H5I API Specification
</title>
<!-- #BeginLibraryItem "/ed_libs/styles_RM.lbi" --><link href="ed_styles/RMelect.css" rel="stylesheet" type="text/css"><!-- #EndLibraryItem --></head>
<body bgcolor="#FFFFFF">
<!-- #BeginLibraryItem "/ed_libs/NavBar_RM.lbi" --><hr>
<center>
<table border=0 width=98%>
<tr><td valign=top align=left>
<a href="index.html">HDF5 documents and links</a> <br>
<a href="H5.intro.html">Introduction to HDF5</a> <br>
<a href="H5.user.html">HDF5 User Guide</a> <br>
<!--
<a href="Glossary.html">Glossary</a><br>
-->
</td>
<td valign=top align=right>
And in this document, the
<a href="RM_H5Front.html">HDF5 Reference Manual</a>
<br>
<a href="RM_H5.html">H5</a>
<a href="RM_H5A.html">H5A</a>
<a href="RM_H5D.html">H5D</a>
<a href="RM_H5E.html">H5E</a>
<a href="RM_H5F.html">H5F</a>
<a href="RM_H5G.html">H5G</a>
<a href="RM_H5I.html">H5I</a>
<a href="RM_H5P.html">H5P</a>
<br>
<a href="RM_H5R.html">H5R</a>
<a href="RM_H5S.html">H5S</a>
<a href="RM_H5T.html">H5T</a>
<a href="RM_H5Z.html">H5Z</a>
<a href="Tools.html">Tools</a>
<a href="PredefDTypes.html">Datatypes</a>
</td></tr>
</table>
</center>
<hr>
<!-- #EndLibraryItem --><center>
<h1>H5I: Identifier Interface</h1>
</center>
<h2>Identifier API Functions</h2>
These functions provides tools for working with object identifiers and
object names.
<p>
<strong>The C Interface:</strong>
<table border=0>
<tr><td valign=top>
<ul>
<li><a href="#Identify-GetName">H5Iget_name</a>
</ul>
</td><td> </td><td valign=top>
<ul>
<li><a href="#Identify-GetType">H5Iget_type</a>
</ul>
</td><td> </td><td valign=top>
<ul>
</ul>
</td></tr>
</table>
<p>
<strong>The FORTRAN90 Interface:</strong>
<br>
<font size=-1>
<i>In general, each FORTRAN90 subroutine performs exactly the same task
as the corresponding C function. The links below go to the C function
descriptions, which serve as general descriptions for both. A button,
under <strong>Non-C API(s)</strong> at the end of the C function description,
opens an external browser window displaying the FORTRAN90-specific
information. You will probably want to adjust the size and location of
this external window so that both browser windows are visible and to
facilitate moving easily between them.</i>
</font>
<table border=0>
<tr><td valign=top>
<ul>
<li><a href="#Identify-GetName">h5iget_name_f</a>
</ul>
</td><td> </td><td valign=top>
<ul>
<li><a href="#Identify-GetType">h5iget_type_f</a>
</ul>
</td><td> </td><td valign=top>
<ul>
</ul>
</td></tr>
</table>
<hr>
<dl>
<dt><strong>Name:</strong> <a name="Identify-GetType">H5Iget_type</a>
<dt><strong>Signature:</strong>
<dd><em>H5I_type_t</em> <code>H5Iget_type</code>(<em>hid_t</em> <code>obj_id</code>)
<dt><strong>Purpose:</strong>
<dd>Retrieves the type of an object.
<dt><strong>Description:</strong>
<dd><code>H5Iget_type</code> retrieves the type of the object
identified by <code>obj_id</code>.
<p>
Valid types returned by the function are
<table>
<tr><td width=200><code> H5I_FILE</code>
</td><td>File</td></tr>
<tr><td><code> H5I_GROUP</code>
</td><td>Group</td></tr>
<tr><td><code> H5I_DATATYPE</code>
</td><td>Datatype</td></tr>
<tr><td><code> H5I_DATASPACE</code>
</td><td>Dataspace</td></tr>
<tr><td><code> H5I_DATASET</code>
</td><td>Dataset</td></tr>
<tr><td><code> H5I_ATTR</code>
</td><td>Attribute</td></tr>
</table>
If no valid type can be determined or the identifier
submitted is invalid, the function returns
<table>
<tr><td width=200><code> H5I_BADID</code>
</td><td>Invalid identifier</td></tr>
</table>
<p>
This function is of particular value in determining the
type of object closing function (<code>H5Dclose</code>,
<code>H5Gclose</code>, etc.) to call after a call to
<code>H5Rdereference</code>.
<dt><strong>Parameters:</strong>
<dl>
<dt><em>hid_t</em> <code>obj_id</code>
<dd>IN: Object identifier whose type is to be determined.
</dl>
<dt><strong>Returns:</strong>
<dd>Returns the object type if successful;
otherwise <code>H5I_BADID</code>.
<dt><strong>Non-C API(s):</strong>
<dd><a href="fortran/h5i_FORTRAN.html#h5iget_type_f"
target="FortranWin"><img src="Graphics/FORTRAN.gif" border=0></a>
<!--
<img src="Graphics/Java.gif">
<img src="Graphics/C++.gif">
-->
</dl>
<hr>
<dl>
<dt><strong>Name:</strong> <a name="Identify-GetName">H5Iget_name</a>
<dt><strong>Signature:</strong>
<dd><em>ssize_t</em> <code>H5Iget_name</code>(<em>hid_t</em> <code>obj_id</code>,
<em>char *</em><code>name</code>,
<em>size_t</em> <code>size</code>
)
<dt><strong>Purpose:</strong> </dt>
<dd>Retrieves a name of an object based on the object identifier.
<dt><strong>Description:</strong>
<dd><code>H5Iget_name</code> retrieves a name for the object identified
by <code>obj_id</code>.
<p>
Up to <code>size</code> characters of the name are returned in
<code>name</code>; additional characters, if any, are not returned
to the user application.
<p>
If the length of the name, which determines the required
value of <code>size</code>, is unknown, a preliminary
<code>H5Iget_name</code> call can be made.
The return value of this call will be the size of the
object name.
That value can then be assigned to <code>size</code>
for a second <code>H5Iget_name</code> call,
which will retrieve the actual name.
<p>
If there is no name associated with the object identifier
or if the name is <code>NULL</code>, <code>H5Iget_name</code>
returns <code>0</code> (zero).
<p>
Note that an object in an HDF5 file may have multiple names,
varying according to the path through the HDF5 group
hierarchy used to reach that object.
<dt><strong>Parameters:</strong>
<dl>
<dt><em>hid_t</em> <code>obj_id</code>
<dd>IN: Identifier of the object.
This identifier can refer to a group, dataset, or
named datatype.
<dt><em>char *</em><code>name</code>
<dd>OUT: A name associated with the identifier.
<dt><em>size_t size</em>
<dd>IN: The size of the <code>name</code> buffer.
</dl>
<dt><strong>Returns:</strong>
<dd>Returns the length of the name if successful,
returning <code>0</code> (zero) if no name is associated with the identifier.
Otherwise returns a negative value.
<dt><strong>Non-C API(s):</strong>
<dd><a href="fortran/h5i_FORTRAN.html#h5iget_name_f"
target="FortranWin"><img src="Graphics/FORTRAN.gif" border=0></a>
<!--
<img src="Graphics/Java.gif">
<img src="Graphics/C++.gif">
-->
</dl>
<!-- #BeginLibraryItem "/ed_libs/NavBar_RM.lbi" --><hr>
<center>
<table border=0 width=98%>
<tr><td valign=top align=left>
<a href="index.html">HDF5 documents and links</a> <br>
<a href="H5.intro.html">Introduction to HDF5</a> <br>
<a href="H5.user.html">HDF5 User Guide</a> <br>
<!--
<a href="Glossary.html">Glossary</a><br>
-->
</td>
<td valign=top align=right>
And in this document, the
<a href="RM_H5Front.html">HDF5 Reference Manual</a>
<br>
<a href="RM_H5.html">H5</a>
<a href="RM_H5A.html">H5A</a>
<a href="RM_H5D.html">H5D</a>
<a href="RM_H5E.html">H5E</a>
<a href="RM_H5F.html">H5F</a>
<a href="RM_H5G.html">H5G</a>
<a href="RM_H5I.html">H5I</a>
<a href="RM_H5P.html">H5P</a>
<br>
<a href="RM_H5R.html">H5R</a>
<a href="RM_H5S.html">H5S</a>
<a href="RM_H5T.html">H5T</a>
<a href="RM_H5Z.html">H5Z</a>
<a href="Tools.html">Tools</a>
<a href="PredefDTypes.html">Datatypes</a>
</td></tr>
</table>
</center>
<hr>
<!-- #EndLibraryItem --><!-- #BeginLibraryItem "/ed_libs/Footer.lbi" --><address>
<a href="mailto:hdfhelp@ncsa.uiuc.edu">HDF Help Desk</a>
<br>
Describes HDF5 Release 1.5, Unreleased Development Branch
</address><!-- #EndLibraryItem -->
Last modified: 10 June 2003
</body>
</html>
|
