bes  Updated for version 3.20.6
HDF5CFFloat32.cc
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1 // This file is part of hdf5_handler: an HDF5 file handler for the OPeNDAP
2 // data server.
3 
4 // Copyright (c) 2011-2016 The HDF Group, Inc. and OPeNDAP, Inc.
5 //
6 // This is free software; you can redistribute it and/or modify it under the
7 // terms of the GNU Lesser General Public License as published by the Free
8 // Software Foundation; either version 2.1 of the License, or (at your
9 // option) any later version.
10 //
11 // This software is distributed in the hope that it will be useful, but
12 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
14 // License for more details.
15 //
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 //
20 // You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
21 // You can contact The HDF Group, Inc. at 1800 South Oak Street,
22 // Suite 203, Champaign, IL 61820
23 
32 
33 #include "config_hdf5.h"
34 
35 #include "InternalErr.h"
36 #include "HDF5CFFloat32.h"
37 #include <BESDebug.h>
38 #include "h5common.h"
39 
40 using namespace libdap;
41 using namespace std;
42 HDF5CFFloat32::HDF5CFFloat32(const string & n, const string &d) : Float32(n, d)
43 {
44 }
45 
46 HDF5CFFloat32::HDF5CFFloat32(const string &n, const string &d,const string &d_f) : Float32(n, d),filename(d_f)
47 {
48 }
49 HDF5CFFloat32::~HDF5CFFloat32()
50 {
51 }
52 BaseType *HDF5CFFloat32::ptr_duplicate()
53 {
54  return new HDF5CFFloat32(*this);
55 }
56 
57 bool HDF5CFFloat32::read()
58 {
59  BESDEBUG("h5","Coming to HDF5CFFloat32 read "<<endl);
60 
61  if (read_p())
62  return true;
63 
64  hid_t file_id = H5Fopen(filename.c_str(),H5F_ACC_RDONLY,H5P_DEFAULT);
65  if(file_id < 0) {
66  throw InternalErr(__FILE__,__LINE__, "Fail to obtain the HDF5 file ID .");
67  }
68 
69  hid_t dset_id = -1;
70  dset_id = H5Dopen2(file_id,dataset().c_str(),H5P_DEFAULT);
71 
72  if(dset_id < 0) {
73  H5Fclose(file_id);
74  throw InternalErr(__FILE__,__LINE__, "Fail to obtain the dataset .");
75  }
76 
77  try {
78  dods_float32 buf;
79  get_data(dset_id, (void *) &buf);
80 
81  set_read_p(true);
82  set_value(buf);
83 
84  // Release the handles.
85  if (H5Dclose(dset_id) < 0) {
86  throw InternalErr(__FILE__, __LINE__, "Unable to close the dset.");
87  }
88  H5Fclose(file_id);
89  }
90  catch(...) {
91  H5Dclose(dset_id);
92  H5Fclose(file_id);
93  throw;
94  }
95 
96  return true;
97 
98 
99 }
get_data
void get_data(hid_t dset, void *buf)
Definition: h5common.cc:50
HDF5CFFloat32
Definition: HDF5CFFloat32.h:42
libdap
Definition: BESDapFunctionResponseCache.h:35
HDF5CFFloat32.h
This class provides a way to map HDF5 float to DAP float for the CF option.
h5common.h