summaryrefslogtreecommitdiffstats
path: root/c++/src/H5Group.cpp
blob: 66e2339754e12df04ab34869554d2611be3e13fe (plain)
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
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
 * access to either file, you may request a copy from help@hdfgroup.org.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#ifdef OLD_HEADER_FILENAME
#include <iostream.h>
#else
#include <iostream>
#endif
#include <string>

#include "H5Include.h"
#include "H5Exception.h"
#include "H5IdComponent.h"
#include "H5PropList.h"
#include "H5FaccProp.h"
#include "H5FcreatProp.h"
#include "H5OcreatProp.h"
#include "H5DcreatProp.h"
#include "H5DxferProp.h"
#include "H5LaccProp.h"
#include "H5Location.h"
#include "H5Object.h"
#include "H5AbstractDs.h"
#include "H5DataSpace.h"
#include "H5DataSet.h"
#include "H5CommonFG.h"
#include "H5Attribute.h"
#include "H5Group.h"
#include "H5File.h"
#include "H5Alltypes.h"

namespace H5 {
    using std::cerr;
    using std::endl;

//--------------------------------------------------------------------------
// Function:    Group default constructor
///\brief       Default constructor: creates a stub Group.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Group::Group() : H5Object(), CommonFG(), id(H5I_INVALID_HID) {}

//--------------------------------------------------------------------------
// Function:    Group copy constructor
///\brief       Copy constructor: makes a copy of the original Group object.
///\param       original - IN: Original group to copy
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Group::Group(const Group& original) : H5Object(), CommonFG(), id(original.id)
{
    incRefCount(); // increment number of references to this id
}

//--------------------------------------------------------------------------
// Function:    Group::getObjId
///\brief       Opens an object via object header.
///\param       obj_name - IN: Path to the object
///\param       plist    - IN: Access property list for the link pointing to
///                            the object
///\exception   H5::FileIException or H5::GroupIException
///\par Description
///             This function opens an object in a group or file, using
///             H5Oopen.  Thus, an object can be opened without knowing
///             the object's type.
// Programmer   Binh-Minh Ribler - March, 2017
//--------------------------------------------------------------------------
hid_t Group::getObjId(const char* obj_name, const PropList& plist) const
{
    hid_t ret_value = H5Oopen(getId(), obj_name, plist.getId());
    if (ret_value < 0)
    {
        throwException("Group::getObjId", "H5Oopen failed");
    }
    return(ret_value);
}

//--------------------------------------------------------------------------
// Function:    Group::getObjId
///\brief       This is an overloaded member function, provided for convenience.
///             It takes a reference to a \c H5std_string for the object's name.
///\param       obj_name - IN: Path to the object
///\param       plist    - IN: Access property list for the link pointing to
///                            the object
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - March, 2017
//--------------------------------------------------------------------------
hid_t Group::getObjId(const H5std_string& obj_name, const PropList& plist) const
{
    return(getObjId(obj_name.c_str(), plist));
}

//--------------------------------------------------------------------------
// Function:    Group::closeObjId
///\brief       Closes an object, which was opened with Group::getObjId
///\exception   H5::FileIException or H5::GroupIException
// Programmer   Binh-Minh Ribler - March, 2017
//--------------------------------------------------------------------------
void Group::closeObjId(hid_t obj_id) const
{
    herr_t ret_value = H5Oclose(obj_id);
    if (ret_value < 0)
    {
        throwException("Group::closeObjId", "H5Oclose failed");
    }
}

//--------------------------------------------------------------------------
// Function:    Group::getLocId
// Purpose:     Get the id of this group
// Programmer   Binh-Minh Ribler - 2000
// Description
//              This function is a redefinition of CommonFG::getLocId.  It
//              is used by CommonFG member functions to get the file id.
// Deprecated:
//      Aug 18, 2016 -BMR
//              After HDFFV-9920, the Group's methods can use getId() and
//              getLocId() is kept for backward compatibility.
//--------------------------------------------------------------------------
hid_t Group::getLocId() const
{
    return(getId());
}

//--------------------------------------------------------------------------
// Function:    Group overloaded constructor
///\brief       Creates a Group object using the id of an existing group.
///\param       existing_id - IN: Id of an existing group
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
Group::Group(const hid_t existing_id) : H5Object(), CommonFG(), id(existing_id)
{
    incRefCount(); // increment number of references to this id
}

//--------------------------------------------------------------------------
// Function:    Group overload constructor - dereference
///\brief       Given a reference, ref, to an hdf5 group, creates a Group object
///\param       loc - IN: Specifying location referenced object is in
///\param       ref - IN: Reference pointer
///\param       ref_type - IN: Reference type - default to H5R_OBJECT
///\param       plist - IN: Property list - default to PropList::DEFAULT
///\exception   H5::ReferenceException
///\par Description
///             \c obj can be DataSet, Group, or named DataType, that
///             is a datatype that has been named by DataType::commit.
// Programmer   Binh-Minh Ribler - Oct, 2006
//--------------------------------------------------------------------------
Group::Group(const H5Location& loc, const void* ref, H5R_type_t ref_type, const PropList& plist) : H5Object(), CommonFG(), id(H5I_INVALID_HID)
{
    id = H5Location::p_dereference(loc.getId(), ref, ref_type, plist, "constructor - by dereference");
}

//--------------------------------------------------------------------------
// Function:    Group overload constructor - dereference
// brief        Given a reference, ref, to an hdf5 group, creates a Group objec
// param        attr - IN: Specifying location where the referenced object is i
// param        ref - IN: Reference pointer
// param        ref_type - IN: Reference type - default to H5R_OBJECT
// param        plist - IN: Property list - default to PropList::DEFAULT
// exception    H5::ReferenceException
// Programmer   Binh-Minh Ribler - Oct, 2006
// Modification
//      Mar, 2017
//              Removed in 1.10.1 because H5Location is Attribute's baseclass
//              now. -BMR
//--------------------------------------------------------------------------
/* Group::Group(const Attribute& attr, const void* ref, H5R_type_t ref_type, const PropList& plist) : H5Object(), id(H5I_INVALID_HID)
{
    id = H5Location::p_dereference(attr.getId(), ref, ref_type, plist, "constructor - by dereference");
}
 */ 

//--------------------------------------------------------------------------
// Function:    Group::getId
///\brief       Get the id of this group
///\return      Group identifier
// Modification:
//      May 2008 - BMR
//              Class hierarchy is revised to address bugzilla 1068.  Class
//              AbstractDS and Attribute are moved out of H5Object.  In
//              addition, member IdComponent::id is moved into subclasses, and
//              IdComponent::getId now becomes pure virtual function.
// Programmer   Binh-Minh Ribler - May, 2008
//--------------------------------------------------------------------------
hid_t Group::getId() const
{
    return(id);
}

#ifndef DOXYGEN_SHOULD_SKIP_THIS
//--------------------------------------------------------------------------
// Function:    Group::p_setId
///\brief       Sets the identifier of this object to a new value.
///
///\exception   H5::IdComponentException when the attempt to close the HDF5
///             object fails
// Description:
//              The underlaying reference counting in the C library ensures
//              that the current valid id of this object is properly closed.
//              Then the object's id is reset to the new id.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void Group::p_setId(const hid_t new_id)
{
    // handling references to this old id
    try {
        close();
    }
    catch (Exception& close_error) {
        throwException("Group::p_setId", close_error.getDetailMsg());
    }
    // reset object's id to the given id
    id = new_id;
}
#endif // DOXYGEN_SHOULD_SKIP_THIS

//--------------------------------------------------------------------------
// Function:    Group::close
///\brief       Closes this group.
///
///\exception   H5::GroupIException
// Programmer   Binh-Minh Ribler - Mar 9, 2005
//--------------------------------------------------------------------------
void Group::close()
{
    if (p_valid_id(id))
    {
        herr_t ret_value = H5Gclose(id);
        if (ret_value < 0)
        {
            throwException("Group::close", "H5Gclose failed");
        }
        // reset the id
        id = H5I_INVALID_HID;
    }
}

//--------------------------------------------------------------------------
// Function:    Group::throwException
///\brief       Throws H5::GroupIException.
///\param       func_name - Name of the function where failure occurs
///\param       msg       - Message describing the failure
///\exception   H5::GroupIException
// Description
//              This function is also used in H5Location's methods so that
//              proper exception can be thrown for file or group.  The
//              "Group::" will be inserted to indicate the function called is
//              an implementation of Group.
// Programmer   Binh-Minh Ribler - 2000
//--------------------------------------------------------------------------
void Group::throwException(const H5std_string& func_name, const H5std_string& msg) const
{
    H5std_string full_name = func_name;
    full_name.insert(0, "Group::");
    throw GroupIException(full_name, msg);
}

//--------------------------------------------------------------------------
// Function:    Group destructor
///\brief       Properly terminates access to this group.
// Programmer   Binh-Minh Ribler - 2000
// Modification
//              - Replaced resetIdComponent() with decRefCount() to use C
//              library ID reference counting mechanism - BMR, Feb 20, 2005
//              - Replaced decRefCount with close() to let the C library
//              handle the reference counting - BMR, Jun 1, 2006
//--------------------------------------------------------------------------
Group::~Group()
{
    try {
        close();
    }
    catch (Exception& close_error) {
        cerr << "Group::~Group - " << close_error.getDetailMsg() << endl;
    }
}

} // end namespace