bes Updated for version 3.20.13
HDF5Byte.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
35
36
37// #define DODS_DEBUG
38#include <string>
39#include <ctype.h>
40
41#include "config_hdf5.h"
42#include "BESDebug.h"
43#include <libdap/InternalErr.h>
44#include "h5dds.h"
45#include "HDF5Byte.h"
46
47
48using namespace std;
49using namespace libdap;
50
51#if 0
52HDF5Byte::HDF5Byte(const string & n, const string &vpath, const string &d):Byte(n, d)
53{
54 var_path = vpath;
55}
56#endif
57
59{
60 return new HDF5Byte(*this);
61}
62
64{
65 if (read_p())
66 return true;
67
68 hid_t file_id = H5Fopen(dataset().c_str(),H5F_ACC_RDONLY,H5P_DEFAULT);
69 if(file_id < 0) {
70 throw InternalErr(__FILE__,__LINE__, "Fail to obtain the HDF5 file ID .");
71 }
72
73 hid_t dset_id = -1;
74
75 if(true == is_dap4())
76 dset_id = H5Dopen2(file_id,var_path.c_str(),H5P_DEFAULT);
77 else
78 dset_id = H5Dopen2(file_id,name().c_str(),H5P_DEFAULT);
79
80 if(dset_id < 0) {
81 H5Fclose(file_id);
82 throw InternalErr(__FILE__,__LINE__, "Fail to obtain the datatype .");
83 }
84
85
86 try {
87 dods_byte buf;
88 get_data(dset_id, (void *) &buf);
89 set_read_p(true);
90 set_value(buf);
91
92 if (H5Dclose(dset_id) < 0) {
93 throw InternalErr(__FILE__, __LINE__, "Unable to close the dset.");
94 }
95
96 H5Fclose(file_id);
97 }
98
99 catch(...) {
100 H5Dclose(dset_id);
101 H5Fclose(file_id);
102 throw;
103 }
104
105 return true;
106}
107
This class provides a way to map HDF5 byte to DAP Byte for the default option.
HDF5Byte(const std::string &n, const std::string &vpath, const std::string &d)
Constructor.
Definition: HDF5Byte.h:54
libdap::BaseType * ptr_duplicate() override
Definition: HDF5Byte.cc:58
bool read() override
Reads HDF5 byte data into local buffer.
Definition: HDF5Byte.cc:63
void get_data(hid_t dset, void *buf)
Definition: h5common.cc:50
Data structure and retrieval processing header for the default option.