00001 /* 00002 * KeyRange.h : part of the Mace toolkit for building distributed systems 00003 * 00004 * Copyright (c) 2007, Charles Killian, Dejan Kostic, Ryan Braud, James W. Anderson, John Fisher-Ogden, Calvin Hubble, Duy Nguyen, Justin Burke, David Oppenheimer, Amin Vahdat, Adolfo Rodriguez, Sooraj Bhat 00005 * All rights reserved. 00006 * 00007 * Redistribution and use in source and binary forms, with or without 00008 * modification, are permitted provided that the following conditions are met: 00009 * 00010 * * Redistributions of source code must retain the above copyright 00011 * notice, this list of conditions and the following disclaimer. 00012 * * Redistributions in binary form must reproduce the above copyright 00013 * notice, this list of conditions and the following disclaimer in 00014 * the documentation and/or other materials provided with the 00015 * distribution. 00016 * * Neither the names of Duke University nor The University of 00017 * California, San Diego, nor the names of the authors or contributors 00018 * may be used to endorse or promote products derived from 00019 * this software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00022 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00023 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00024 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 00025 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00026 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 00027 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00028 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00029 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 00030 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00031 * 00032 * ----END-OF-LEGAL-STUFF---- */ 00033 #ifndef KEY_RANGE_H 00034 #define KEY_RANGE_H 00035 00041 #include "mpair.h" 00042 #include "MaceKey.h" 00043 00044 namespace mace { 00046 class KeyRange : public mace::pair<MaceKey, MaceKey> { 00047 public: 00048 KeyRange() : mace::pair<MaceKey, MaceKey>() { } 00049 KeyRange(const KeyRange& copy) : mace::pair<MaceKey, MaceKey>(copy) { } 00050 KeyRange(const MaceKey& f, const MaceKey& s) : mace::pair<MaceKey, MaceKey>(f, s) { } 00052 bool containsKey(const MaceKey& k) const { 00053 return KeyRange::containsKey(k, first, second); 00054 } // containsKey 00055 00057 00064 inline static bool containsKey(const MaceKey& id, const MaceKey& start, const MaceKey& end) { 00065 if (id.isNullAddress() || start.isNullAddress() || end.isNullAddress()) { 00066 return false; 00067 } 00068 if (id.addressFamily() != start.addressFamily() || start.addressFamily() != end.addressFamily()) { 00069 throw(InvalidMaceKeyException("Cannot perform KeyRange::containsKey on keys of different families")); 00070 } 00071 00072 if (start == end) { 00073 return true; 00074 } 00075 else if (start < end) { 00076 return ((start <= id) && (id < end)); 00077 } 00078 else { 00079 return ((start <= id) || (id < end)); 00080 } 00081 } 00082 00083 void print(std::ostream& out) const { 00084 out << "KeyRange["<<first<<","<<second<<")"; 00085 } 00086 00087 void printState(std::ostream& out) const { 00088 out << "KeyRange["; 00089 mace::printState(out, &first, first); 00090 out << ","; 00091 mace::printState(out, &second, second); 00092 out <<")"; 00093 } 00094 00095 static const KeyRange null; 00096 00097 }; // KeyRange 00098 00099 } // namespace mace 00100 00101 #endif // KEY_RANGE_H