bes Updated for version 3.20.10
AggMemberDatasetSharedDDSWrapper.cc
1
2// This file is part of the "NcML Module" project, a BES module designed
3// to allow NcML files to be used to be used as a wrapper to add
4// AIS to existing datasets of any format.
5//
6// Copyright (c) 2010 OPeNDAP, Inc.
7// Author: Michael Johnson <m.johnson@opendap.org>
8//
9// For more information, please also see the main website: http://opendap.org/
10//
11// This library is free software; you can redistribute it and/or
12// modify it under the terms of the GNU Lesser General Public
13// License as published by the Free Software Foundation; either
14// version 2.1 of the License, or (at your option) any later version.
15//
16// This library is distributed in the hope that it will be useful,
17// but WITHOUT ANY WARRANTY; without even the implied warranty of
18// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19// Lesser General Public License for more details.
20//
21// You should have received a copy of the GNU Lesser General Public
22// License along with this library; if not, write to the Free Software
23// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24//
25// Please see the files COPYING and COPYRIGHT for more information on the GLPL.
26//
27// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
29#include "AggMemberDatasetSharedDDSWrapper.h"
30#include <libdap/DDS.h> // libdap
31#include "DDSAccessInterface.h"
32#include "NCMLDebug.h"
33
34namespace agg_util
35{
36 AggMemberDatasetSharedDDSWrapper::AggMemberDatasetSharedDDSWrapper()
37 : AggMemberDatasetWithDimensionCacheBase("") // empty location for the wrapper
38 , _pDDSHolder(0) // NULL, really shouldn't create a default.
39 {
40 }
41
42 AggMemberDatasetSharedDDSWrapper::AggMemberDatasetSharedDDSWrapper(const DDSAccessRCInterface* pDDSHolder)
43 : AggMemberDatasetWithDimensionCacheBase("") // empty location
44 , _pDDSHolder(pDDSHolder)
45 {
46 if (_pDDSHolder)
47 {
48 _pDDSHolder->ref();
49 }
50 }
51
52 AggMemberDatasetSharedDDSWrapper::~AggMemberDatasetSharedDDSWrapper()
53 {
54 BESDEBUG("ncml:memory", "~AggMemberDatasetDDSWrapper() called..." << endl);
55 cleanup(); // will unref()
56 }
57
58 AggMemberDatasetSharedDDSWrapper::AggMemberDatasetSharedDDSWrapper(const AggMemberDatasetSharedDDSWrapper& proto)
59 : RCObjectInterface()
60 , AggMemberDatasetWithDimensionCacheBase(proto)
61 , _pDDSHolder(0)
62 {
63 copyRepFrom(proto);
64 }
65
66 AggMemberDatasetSharedDDSWrapper&
67 AggMemberDatasetSharedDDSWrapper::operator=(const AggMemberDatasetSharedDDSWrapper& that)
68 {
69 if (this != &that)
70 {
71 // deal with old reference
72 cleanup();
73 // super changes
74 AggMemberDatasetWithDimensionCacheBase::operator=(that);
75 // local changes
76 copyRepFrom(that);
77 }
78 return *this;
79 }
80
81
82 const libdap::DDS*
83 AggMemberDatasetSharedDDSWrapper::getDDS()
84 {
85 const libdap::DDS* pDDS = 0;
86 if (_pDDSHolder)
87 {
88 pDDS = _pDDSHolder->getDDS();
89 }
90 return dynamic_cast<const libdap::DDS*>(pDDS);
91 }
92
94
95 void
96 AggMemberDatasetSharedDDSWrapper::cleanup() throw()
97 {
98 if (_pDDSHolder)
99 {
100 _pDDSHolder->unref();
101 _pDDSHolder = 0;
102 }
103 }
104
105 void
106 AggMemberDatasetSharedDDSWrapper::copyRepFrom(const AggMemberDatasetSharedDDSWrapper& rhs)
107 {
108 NCML_ASSERT(!_pDDSHolder);
109 _pDDSHolder = rhs._pDDSHolder;
110 if (_pDDSHolder)
111 {
112 _pDDSHolder->ref();
113 }
114 }
115}
Helper class for temporarily hijacking an existing dhi to load a DDX response for one particular file...