text: // MIT License
  // 
  // Copyright (c) 2018 Francisco Ruiz (francisco.ruiz.rayo@gmail.com)
  // 
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  // 
  // The above copyright notice and this permission notice shall be included in all
  // copies or substantial portions of the Software.
  // 
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  // SOFTWARE.
  //
  
  #include <memory>
  
  #include <coffee/dbms/datatype/Abstract.hpp>
  
  #include <coffee/persistence/PrimaryKey.hpp>
  #include <coffee/persistence/PrimaryKeyBuilder.hpp>
  
  using namespace coffee;
  
  persistence::PrimaryKey::PrimaryKey(const PrimaryKeyBuilder& builder) :
     dbms::datatype::Set(builder)
  {
  }
  
  bool persistence::PrimaryKey::matches(const PrimaryKey& other) const
     noexcept
  {
     if (size() != other.size())
        return false;
  
     for (const_data_iterator ii = begin(), maxii = end(); ii != maxii; ii ++) {
        const_data_iterator oo = other.search(PrimaryKey::name(ii));
  
        if (oo == other.end())
           return false;
  
        if (PrimaryKey::data(oo)->getType() != PrimaryKey::data(ii)->getType())
           return false;
     }
  
     return true;
  }
  
  size_t persistence::PrimaryKey::hash() const noexcept
  {
     size_t result = size();
  
     for(PrimaryKey::const_data_iterator ii = begin(), maxii = end(); ii != maxii; ++ ii) {
        result ^= PrimaryKey::data(ii)->hash() << 1;
     }
  
     return result;
  }
  
  basis::StreamString persistence::PrimaryKey::asString() const noexcept
  {
     basis::StreamString result("persistence.PrimaryKey { ");
  
     bool first = true;
     for (const_data_iterator ii = begin(), maxii = end(); ii != maxii; ++ ii) {
        if (first == false) {
           result += ",";
        }
        result += data(ii)->asString();
        first = false;
     }
  
     return result += "}";
  }
  