bes  Updated for version 3.20.6
BESPluginFactory.h
1 // BESPluginFactory.h
2 
3 // This file is part of bes, A C++ back-end server implementation framework
4 // for the OPeNDAP Data Access Protocol.
5 
6 // Copyright (c) 2004-2009 University Corporation for Atmospheric Research
7 // Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
8 // and James Gallagher <jgallagher@gso.uri.edu>
9 //
10 // This library is free software; you can redistribute it and/or
11 // modify it under the terms of the GNU Lesser General Public
12 // License as published by the Free Software Foundation; either
13 // version 2.1 of the License, or (at your option) any later version.
14 //
15 // This library is distributed in the hope that it will be useful,
16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 // Lesser General Public 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 University Corporation for Atmospheric Research at
25 // 3080 Center Green Drive, Boulder, CO 80301
26 
27 // (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005
28 // Please read the full copyright statement in the file COPYRIGHT_UCAR.
29 //
30 // Authors:
31 // pwest Patrick West <pwest@ucar.edu>
32 // jgarcia Jose Garcia <jgarcia@ucar.edu>
33 // jimg James Gallagher <jgallagher@gso.uri.edu>
34 
35 #ifndef plugin_factory_h
36 #define plugin_factory_h
37 
38 #include <string>
39 #include <map>
40 #include <algorithm>
41 
42 #include "BESPlugin.h"
43 
44 #include "BESObj.h"
45 
55 template<typename C>
56 class BESPluginFactory: public BESObj
57 {
58 private:
59  std::map<std::string, BESPlugin<C> *> d_children;
60 
67  // I just removed these impls entirely. jhrg 5/13/15
68  BESPluginFactory(const BESPluginFactory &); // throw (BESInternalError)
69 #if 0
70  {
71  throw BESInternalError("Unimplemented method.", __FILE__, __LINE__);
72  }
73 #endif
74 
78  const BESPluginFactory &operator=(const BESPluginFactory &); // throw (BESInternalError)
79 #if 0
80  {
81  throw BESInternalError("Unimplemented method.", __FILE__, __LINE__);
82  }
83 #endif
84 
85  struct DeletePlugins: public std::unary_function<std::pair<std::string, BESPlugin<C> *>, void>
86  {
87 
88  void operator()(std::pair<std::string, BESPlugin<C> *> elem)
89  {
90  delete elem.second;
91  }
92  };
93 
94 public:
104  BESPluginFactory(const std::string &name, const std::string &library_name)
105  {
106  add_mapping(name, library_name);
107  }
108 
112  {
113  }
114 
115  virtual ~BESPluginFactory()
116  {
117  for_each(d_children.begin(), d_children.end(), DeletePlugins());
118  }
119 
125  void add_mapping(const std::string &name, const std::string &library_name)
126  {
127  BESPlugin<C> *child_class = new BESPlugin<C>(library_name);
128  d_children.insert(std::make_pair(name, child_class));
129  }
130 
146  C *get(const std::string &name) throw (NoSuchObject, NoSuchLibrary)
147  {
148  BESPlugin<C> *child_implementation = d_children[name];
149  if (!child_implementation) throw NoSuchObject(std::string("No class is bound to ") + name, __FILE__, __LINE__);
150  return child_implementation->instantiate();
151  }
152 
153  virtual void dump(std::ostream &strm) const
154  {
155  strm << "BESPluginFactory::dump - (" << (void *) this << ")" << std::endl;
156  /*
157  typedef map<string, BESPlugin<C> *>::const_iterator Plugin_citer ;
158  BESPluginFactory::Plugin_citer i = d_children.begin() ;
159  BESPluginFactory::Plugin_citer ie = d_children.end() ;
160  for( ; i != ie; i++ )
161  {
162  strm << i.second ;
163  }
164  */
165  }
166 };
167 
168 #endif //plugin_h
BESPlugin::instantiate
M * instantiate()
Definition: BESPlugin.h:169
NoSuchLibrary
Definition: BESPlugin.h:52
BESPluginFactory::BESPluginFactory
BESPluginFactory(const std::string &name, const std::string &library_name)
Definition: BESPluginFactory.h:104
BESPluginFactory::add_mapping
void add_mapping(const std::string &name, const std::string &library_name)
Definition: BESPluginFactory.h:125
BESPluginFactory::get
C * get(const std::string &name)
Definition: BESPluginFactory.h:146
BESObj
top level BES object to house generic methods
Definition: BESObj.h:49
BESInternalError
exception thrown if internal error encountered
Definition: BESInternalError.h:43
BESPluginFactory::dump
virtual void dump(std::ostream &strm) const
dump the contents of this object to the specified ostream
Definition: BESPluginFactory.h:153
BESPluginFactory::BESPluginFactory
BESPluginFactory()
Definition: BESPluginFactory.h:111
BESPluginFactory
Definition: BESPluginFactory.h:56
BESPlugin< C >
NoSuchObject
Definition: BESPlugin.h:63