bes Updated for version 3.20.10
HDF5CFByte.cc
Go to the documentation of this file.
1// This file is part of the hdf5_handler implementing for the CF-compliant
2// Copyright (c) 2011-2016 The HDF Group, Inc. and OPeNDAP, Inc.
3//
4// This is free software; you can redistribute it and/or modify it under the
5// terms of the GNU Lesser General Public License as published by the Free
6// Software Foundation; either version 2.1 of the License, or (at your
7// option) any later version.
8//
9// This software is distributed in the hope that it will be useful, but
10// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
12// License for more details.
13//
14// You should have received a copy of the GNU Lesser General Public
15// License along with this library; if not, write to the Free Software
16// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17//
18// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
19// You can contact The HDF Group, Inc. at 1800 South Oak Street,
20// Suite 203, Champaign, IL 61820
21
30
31#include "config_hdf5.h"
32
33#include <libdap/InternalErr.h>
34#include "HDF5CFByte.h"
35#include <BESDebug.h>
36#include "h5common.h"
37
38using namespace std;
39using namespace libdap;
40
41
42HDF5CFByte::HDF5CFByte(const string & n, const string &d) : Byte(n, d)
43{
44}
45
46HDF5CFByte::HDF5CFByte(const string &n, const string &d,const string &d_f) : Byte(n, d),filename(d_f)
47{
48}
49
50HDF5CFByte::~HDF5CFByte()
51{
52}
53BaseType *HDF5CFByte::ptr_duplicate()
54{
55 return new HDF5CFByte(*this);
56}
57
58bool HDF5CFByte::read()
59{
60 BESDEBUG("h5","Coming to HDF5CFByte read "<<endl);
61
62 if (read_p())
63 return true;
64
65 hid_t file_id = H5Fopen(filename.c_str(),H5F_ACC_RDONLY,H5P_DEFAULT);
66 if(file_id < 0) {
67 throw InternalErr(__FILE__,__LINE__, "Fail to obtain the HDF5 file ID .");
68 }
69
70 hid_t dset_id = -1;
71 dset_id = H5Dopen2(file_id,dataset().c_str(),H5P_DEFAULT);
72
73 if(dset_id < 0) {
74 H5Fclose(file_id);
75 throw InternalErr(__FILE__,__LINE__, "Fail to obtain the dataset .");
76 }
77
78 try {
79 dods_byte buf;
80 get_data(dset_id, (void *) &buf);
81
82 set_read_p(true);
83 set_value(buf);
84
85 // Release the handles.
86 if (H5Dclose(dset_id) < 0) {
87 throw InternalErr(__FILE__, __LINE__, "Unable to close the dset.");
88 }
89 H5Fclose(file_id);
90 }
91 catch(...) {
92 H5Dclose(dset_id);
93 H5Fclose(file_id);
94 throw;
95 }
96
97 return true;
98
99
100}
101
This class provides a way to map HDF5 byte to DAP byte for the CF option.
void get_data(hid_t dset, void *buf)
Definition: h5common.cc:50