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PullEventReceivingStrategy.cpp
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1 /* ============================================================
2  *
3  * This file is part of the RSB project
4  *
5  * Copyright (C) 2011, 2012 Jan Moringen <jmoringe@techfak.uni-bielefeld.de>
6  *
7  * This file may be licensed under the terms of the
8  * GNU Lesser General Public License Version 3 (the ``LGPL''),
9  * or (at your option) any later version.
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11  * Software distributed under the License is distributed
12  * on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
13  * express or implied. See the LGPL for the specific language
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15  *
16  * You should have received a copy of the LGPL along with this
17  * program. If not, go to http://www.gnu.org/licenses/lgpl.html
18  * or write to the Free Software Foundation, Inc.,
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20  *
21  * The development of this software was supported by:
22  * CoR-Lab, Research Institute for Cognition and Robotics
23  * Bielefeld University
24  *
25  * ============================================================ */
26 
28 
29 #include "../filter/Filter.h"
30 
31 #include "../transport/InPullConnector.h"
32 
33 using namespace std;
34 
35 using namespace boost;
36 
37 using namespace rsb::filter;
38 using namespace rsb::transport;
39 
40 namespace rsb {
41 namespace eventprocessing {
42 
43 typedef std::set<transport::InPullConnectorPtr> ConnectorSet;
44 typedef std::set<filter::FilterPtr> FilterSet;
45 
47 public:
49 
51 };
52 
53 PullEventReceivingStrategy::PullEventReceivingStrategy(const set<InPullConnectorPtr>& connectors) :
54  d(new Impl) {
55  d->connectors = connectors;
56 }
57 
59 }
60 
62  d->filters.insert(filter);
63 }
64 
66  d->filters.erase(filter);
67 }
68 
70  // Go through our connectors and ask them to emit an event. If one
71  // connector does emit an event, we filter and potentially return
72  // it.
73  for (ConnectorSet::iterator it = d->connectors.begin(); it
74  != d->connectors.end(); ++it) {
75  EventPtr event((*it)->raiseEvent(block));
76  if (event) {
77  // TODO filter
78  return event;
79  }
80  }
81  return EventPtr();
82 }
83 
84 void PullEventReceivingStrategy::handle(EventPtr /*event*/) {} // not used
85 
87  return "PullEventReceivingStrategy";
88 }
89 
90 void PullEventReceivingStrategy::printContents(ostream& stream) const {
91  stream << "connectors = " << d->connectors << ", filters = "
92  << d->filters;
93 }
94 
95 }
96 }