bes  Updated for version 3.20.6
HDF5Float32.cc
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1 // This file is part of hdf5_handler a HDF5 file handler for the OPeNDAP
2 // data server.
3 
4 // Author: Hyo-Kyung Lee <hyoklee@hdfgroup.org> and Muqun Yang
5 // <myang6@hdfgroup.org>
6 
7 // Copyright (c) 2009-2016 The HDF Group, Inc. and OPeNDAP, Inc.
8 //
9 // This is free software; you can redistribute it and/or modify it under the
10 // terms of the GNU Lesser General Public License as published by the Free
11 // Software Foundation; either version 2.1 of the License, or (at your
12 // option) any later version.
13 //
14 // This software is distributed in the hope that it will be useful, but
15 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17 // License for more details.
18 //
19 // You should have received a copy of the GNU Lesser General Public
20 // License along with this library; if not, write to the Free Software
21 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 //
23 // You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
24 // You can contact The HDF Group, Inc. at 1800 South Oak Street,
25 // Suite 203, Champaign, IL 61820
26 
27 
35 
36 
37 // #define DODS_DEBUG
38 
39 #include <string>
40 #include <ctype.h>
41 
42 #include "config_hdf5.h"
43 #include "BESDebug.h"
44 #include "h5dds.h"
45 #include "InternalErr.h"
46 #include "HDF5Float32.h"
47 
48 
49 using namespace std;
50 using namespace libdap;
51 HDF5Float32::HDF5Float32(const string & n, const string &vpath, const string &d) : Float32(n, d),var_path(vpath)
52 {
53 }
54 
56 {
57  return new HDF5Float32(*this);
58 }
59 
61 {
62  BESDEBUG("h5", ">HDFFloat32::read() dataset=" << dataset() << endl);
63  if (read_p())
64  return true;
65 
66  hid_t file_id = H5Fopen(dataset().c_str(),H5F_ACC_RDONLY,H5P_DEFAULT);
67  if(file_id < 0) {
68  throw InternalErr(__FILE__,__LINE__, "Fail to obtain the HDF5 file ID .");
69  }
70 
71  hid_t dset_id = -1;
72  if(true == is_dap4())
73  dset_id = H5Dopen2(file_id,var_path.c_str(),H5P_DEFAULT);
74  else
75  dset_id = H5Dopen2(file_id,name().c_str(),H5P_DEFAULT);
76 
77  if(dset_id < 0) {
78  H5Fclose(file_id);
79  throw InternalErr(__FILE__,__LINE__, "Fail to obtain the datatype .");
80  }
81 
82 
83  try {
84  dods_float32 buf;
85  get_data(dset_id, (void *) &buf);
86  set_read_p(true);
87  set_value(buf);
88 
89  // Release the handles.
90  if (H5Dclose(dset_id) < 0) {
91  throw InternalErr(__FILE__, __LINE__, "Unable to close the dset.");
92  }
93 
94  H5Fclose(file_id);
95  }
96  catch(...) {
97  H5Dclose(dset_id);
98  H5Fclose(file_id);
99  throw;
100  }
101 
102  return true;
103 }
104 
HDF5Float32::ptr_duplicate
virtual libdap::BaseType * ptr_duplicate()
Definition: HDF5Float32.cc:55
HDF5Float32.h
A class for mapping HDF5 32-bit float to DAP for the default option.
h5dds.h
Data structure and retrieval processing header for the default option.
HDF5Float32::read
virtual bool read()
Reads HDF5 32-bit float data into local buffer.
Definition: HDF5Float32.cc:60
get_data
void get_data(hid_t dset, void *buf)
Definition: h5common.cc:50
libdap
Definition: BESDapFunctionResponseCache.h:35
HDF5Float32::HDF5Float32
HDF5Float32(const std::string &n, const std::string &vpath, const std::string &d)
Constructor.
Definition: HDF5Float32.cc:51