bes Updated for version 3.20.13
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 <libdap/InternalErr.h>
46#include "HDF5Float32.h"
47
48
49using namespace std;
50using namespace libdap;
51HDF5Float32::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
A class for mapping HDF5 32-bit float to DAP for the default option.
HDF5Float32(const std::string &n, const std::string &vpath, const std::string &d)
Constructor.
Definition: HDF5Float32.cc:51
bool read() override
Reads HDF5 32-bit float data into local buffer.
Definition: HDF5Float32.cc:60
libdap::BaseType * ptr_duplicate() override
Definition: HDF5Float32.cc:55
void get_data(hid_t dset, void *buf)
Definition: h5common.cc:50
Data structure and retrieval processing header for the default option.