bes  Updated for version 3.20.6
NCFloat64.cc
1 
2 // -*- mode: c++; c-basic-offset:4 -*-
3 
4 // This file is part of nc_handler, a data handler for the OPeNDAP data
5 // server.
6 
7 // Copyright (c) 2002,2003 OPeNDAP, Inc.
8 // Author: James Gallagher <jgallagher@opendap.org>
9 //
10 // This is free software; you can redistribute it and/or modify it under the
11 // terms of the GNU Lesser General Public License as published by the Free
12 // Software Foundation; either version 2.1 of the License, or (at your
13 // option) any later version.
14 //
15 // This software is distributed in the hope that it will be useful, but
16 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
17 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
18 // License for more details.
19 //
20 // You should have received a copy of the GNU Lesser General Public
21 // License along with this library; if not, write to the Free Software
22 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 //
24 // You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
25 
26 
27 // (c) COPYRIGHT URI/MIT 1994-1996
28 // Please read the full copyright statement in the file COPYRIGHT.
29 //
30 // Authors:
31 // reza Reza Nekovei (reza@intcomm.net)
32 
33 // netCDF sub-class implementation for NCByte,...NCGrid.
34 // The files are patterned after the subcalssing examples
35 // Test<type>.c,h files.
36 //
37 // ReZa 1/12/95
38 
39 #include "config_nc.h"
40 
41 static char rcsid[] not_used ={"$Id$"};
42 
43 #include <netcdf.h>
44 #include <InternalErr.h>
45 
46 #include "NCFloat64.h"
47 
48 
49 NCFloat64::NCFloat64(const string &n, const string &d) : Float64(n, d)
50 {
51 }
52 
53 NCFloat64::NCFloat64(const NCFloat64 &rhs) : Float64(rhs)
54 {
55 }
56 
57 NCFloat64::~NCFloat64()
58 {
59 }
60 
61 NCFloat64 &
62 NCFloat64::operator=(const NCFloat64 &rhs)
63 {
64  if (this == &rhs)
65  return *this;
66 
67  dynamic_cast<NCFloat64&>(*this) = rhs;
68 
69 
70  return *this;
71 }
72 
73 BaseType *
74 NCFloat64::ptr_duplicate()
75 {
76  return new NCFloat64(*this); // Copy ctor calls duplicate to do the work
77 }
78 
79 
80 bool
81 NCFloat64::read()
82 {
83 
84  int varid; /* variable Id */
85  nc_type datatype; /* variable data type */
86  size_t cor[MAX_NC_DIMS]; /* corner coordinates */
87  int num_dim; /* number of dim. in variable */
88  dods_float64 flt64;
89  int id;
90 
91  if (read_p()) // nothing to do here
92  return true;
93 
94  int ncid, errstat;
95  errstat = nc_open(dataset().c_str(), NC_NOWRITE, &ncid); /* netCDF id */
96 
97  if (errstat != NC_NOERR)
98  {
99  string err = "Could not open the dataset's file (" + dataset() + ")" ;
100  throw Error(errstat, err);
101  }
102 
103  errstat = nc_inq_varid(ncid, name().c_str(), &varid);
104  if (errstat != NC_NOERR)
105  throw Error(errstat, "Could not get variable ID.");
106 
107  errstat = nc_inq_var(ncid, varid, (char *)0, &datatype, &num_dim, (int *)0,
108  (int *)0);
109  if (errstat != NC_NOERR)
110  throw Error(errstat,
111  string("Could not read information about the variable `")
112  + name() + string("'."));
113 
114  for (id = 0; id <= num_dim && id < MAX_NC_DIMS; id++)
115  cor[id] = 0;
116 
117  if (datatype == NC_DOUBLE){
118  double dbl;
119 
120  errstat = nc_get_var1_double(ncid, varid, cor, &dbl);
121  if (errstat != NC_NOERR)
122  throw Error(errstat,
123  string("Could not read the variable `") + name()
124  + string("'."));
125 
126  set_read_p(true);
127 
128  flt64 = (dods_float64) dbl;
129  val2buf((void *) &flt64 );
130 
131  if (nc_close(ncid) != NC_NOERR)
132  throw InternalErr(__FILE__, __LINE__,
133  "Could not close the dataset!");
134  }
135  else
136  throw InternalErr(__FILE__, __LINE__,
137  "Entered NCFloat64::read() with non-float64 variable!");
138 
139  return true;
140 }
141 
142 // $Log: NCFloat64.cc,v $
143 // Revision 1.14 2005/04/19 23:16:18 jimg
144 // Removed client side parts; the client library is now in libnc-dap.
145 //
146 // Revision 1.13 2005/04/08 17:08:47 jimg
147 // Removed old 'virtual ctor' functions which have now been replaced by the
148 // factory class code in libdap++.
149 //
150 // Revision 1.12 2005/03/31 00:04:51 jimg
151 // Modified to use the factory class in libdap++ 3.5.
152 //
153 // Revision 1.11 2005/02/17 23:44:13 jimg
154 // Modifications for processing of command line projections combined
155 // with the limit stuff and projection info passed in from the API. I also
156 // consolodated some of the code by moving d_source from various
157 // classes to NCAccess. This may it so that DODvario() could be simplified
158 // as could build_constraint() and store_projection() in NCArray.
159 //
160 // Revision 1.10 2005/01/26 23:25:51 jimg
161 // Implemented a fix for Sequence access by row number when talking to a
162 // 3.4 or earlier server (which contains a bug in is_end_of_rows()).
163 //
164 // Revision 1.9 2004/11/30 22:11:35 jimg
165 // I replaced the flatten_*() functions with a flatten() method in
166 // NCAccess. The default version of this method is in NCAccess and works
167 // for the atomic types; constructors must provide a specialization.
168 // Then I removed the code that copied the variables from vectors to
169 // lists. The translation code in NCConnect was modified to use the
170 // new method.
171 //
172 // Revision 1.8 2004/10/22 21:51:34 jimg
173 // More massive changes: Translation of Sequences now works so long as the
174 // Sequence contains only atomic types.
175 //
176 // Revision 1.7 2004/09/08 22:08:22 jimg
177 // More Massive changes: Code moved from the files that clone the netCDF
178 // function calls into NCConnect, NCAccess or nc_util.cc. Much of the
179 // translation functions are now methods. The netCDF type classes now
180 // inherit from NCAccess in addition to the DAP type classes.
181 //
182 // Revision 1.6 2003/12/08 18:06:37 edavis
183 // Merge release-3-4 into trunk
184 //
185 // Revision 1.5 2003/09/25 23:09:36 jimg
186 // Meerged from 3.4.1.
187 //
188 // Revision 1.4.8.1 2003/06/06 08:23:41 reza
189 // Updated the servers to netCDF-3 and fixed error handling between client and server.
190 //
191 // Revision 1.4 2000/10/06 01:22:02 jimg
192 // Moved the CVS Log entries to the ends of files.
193 // Modified the read() methods to match the new definition in the dap library.
194 // Added exception handlers in various places to catch exceptions thrown
195 // by the dap library.
196 //
197 // Revision 1.3 1999/11/05 05:15:05 jimg
198 // Result of merge woth 3-1-0
199 //
200 // Revision 1.1.2.1 1999/10/22 17:33:37 jimg
201 // Merged Reza's changes from the trunk
202 //
203 // Revision 1.2 1999/10/21 13:19:06 reza
204 // IMAP and other bug fixed for version3.
205 //
206 // Revision 1.1 1999/07/28 00:22:43 jimg
207 // Added
208 //
209 // Revision 1.8.2.1 1999/05/27 17:43:23 reza
210 // Fixed bugs in string changes
211 //
212 // Revision 1.8 1999/05/07 23:45:32 jimg
213 // String --> string fixes
214 //
215 // Revision 1.7 1999/03/30 05:20:55 reza
216 // Added support for the new data types (Int16, UInt16, and Float32).
217 //
218 // Revision 1.6 1998/08/06 16:33:22 jimg
219 // Fixed misuse of the read(...) member function. Return true if more data
220 // is to be read, false is if not and error if an error is detected
221 //
222 // Revision 1.5 1996/09/17 17:06:24 jimg
223 // Merge the release-2-0 tagged files (which were off on a branch) back into
224 // the trunk revision.
225 //
226 // Revision 1.4.4.3 1996/09/17 00:26:22 jimg
227 // Merged changes from a side branch which contained various changes from
228 // Reza and Charles.
229 // Removed ncdump and netexec since ncdump is now in its own directory and
230 // netexec is no longer used.
231 //
232 // Revision 1.4.4.2 1996/07/10 21:44:02 jimg
233 // Changes for version 2.06. These fixed lingering problems from the migration
234 // from version 1.x to version 2.x.
235 // Removed some (but not all) warning generated with gcc's -Wall option.
236 //
237 // Revision 1.4.4.1 1996/06/25 22:04:25 jimg
238 // Version 2.0 from Reza.
239 //
240 // Revision 1.4 1995/07/09 21:33:43 jimg
241 // Added copyright notice.
242 //
243 // Revision 1.3 1995/06/23 13:47:44 reza
244 // Added scalar read and the constraint "point".
245 //
246 // Revision 1.2 1995/03/16 16:56:30 reza
247 // Updated for the new DAP. All the read_val mfunc. and their memory management
248 // are now moved to their parent class.
249 // Data transfers are now in binary while DAS and DDS are still sent in ASCII.
250 //
251 // Revision 1.1 1995/02/10 04:57:22 reza
252 // Added read and read_val functions.
253 
254 
255 
NCFloat64
Definition: NCFloat64.h:46
Error