tests/src/integration/values/map.hpp

/*
  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
*/

#ifndef __TEST_MAP_HPP__
#define __TEST_MAP_HPP__
#include "nullable_value.hpp"
#include "test_utils.hpp"

namespace test { namespace driver {

/**
 * Map wrapped value
 */
template <typename K, typename V>
class Map : public Collection {
public:
  Map()
      : Collection(CASS_COLLECTION_TYPE_MAP) {}

  Map(const std::map<K, V>& map)
      : Collection(CASS_COLLECTION_TYPE_MAP, map.size())
      , map_(map) {
    // Create the collection
    for (typename std::map<K, V>::const_iterator iterator = map.begin(); iterator != map.end();
         ++iterator) {
      K key = iterator->first;
      V value = iterator->second;
      Collection::append<K>(key);
      Collection::append<V>(value);
      primary_sub_type_ = key.value_type();
      secondary_sub_type_ = value.value_type();
    }
  }

  Map(const CassValue* value)
      : Collection(CASS_COLLECTION_TYPE_MAP) {
    initialize(value);
  }

  void append(Collection collection) { Collection::append(collection); }

  std::string cql_type() const {
    typename std::map<K, V>::const_iterator iterator = map_.begin();
    std::string cql_type =
        "map<" + iterator->first.cql_type() + ", " + iterator->second.cql_type() + ">";
    return cql_type;
  }

  std::string cql_value() const { return str(); }

  bool is_null() const { return Collection::is_null_; }

  CassCollectionType collection_type() const { return collection_type_; }

  void set(Tuple tuple, size_t index) { Collection::set(tuple, index); }

  void set(UserType user_type, const std::string& name) { Collection::set(user_type, name); }

  /**
   * Get the size of the map
   *
   * @return The number of key/value in the map
   */
  size_t size() const { return map_.size(); }

  void statement_bind(Statement statement, size_t index) {
    if (is_null()) {
      ASSERT_EQ(CASS_OK, cass_statement_bind_null(statement.get(), index));
    } else {
      ASSERT_EQ(CASS_OK, cass_statement_bind_collection(statement.get(), index, get()));
    }
  }

  void statement_bind(Statement statement, const std::string& name) {
    if (is_null()) {
      ASSERT_EQ(CASS_OK, cass_statement_bind_null_by_name(statement.get(), name.c_str()));
    } else {
      ASSERT_EQ(CASS_OK,
                cass_statement_bind_collection_by_name(statement.get(), name.c_str(), get()));
    }
  }

  std::vector<K> keys() const {
    std::vector<K> keys;
    for (typename std::map<K, V>::const_iterator iterator = map_.begin(); iterator != map_.end();
         ++iterator) {
      keys.push_back(iterator->first);
    }
    return keys;
  }

  CassValueType key_type() const { return secondary_sub_type_; }

  std::string str() const {
    if (is_null()) {
      return "null";
    } else if (map_.empty()) {
      return "{}";
    } else {
      std::stringstream map_string;
      map_string << "{";
      for (typename std::map<K, V>::const_iterator iterator = map_.begin(); iterator != map_.end();
           ++iterator) {
        K key = iterator->first;
        V value = iterator->second;
        map_string << key.cql_value() << ":" << value.cql_value();

        // Add a comma separation to the list (unless the last element)
        if (iterator != --map_.end()) {
          map_string << ", ";
        }
      }
      map_string << "}";
      return map_string.str();
    }
  }

  std::map<K, V> value() const { return map_; }

  std::vector<V> values() const {
    std::vector<V> values;
    for (typename std::map<K, V>::const_iterator iterator = map_.begin(); iterator != map_.end();
         ++iterator) {
      values.push_back(iterator->second);
    }
    return values;
  }

  CassValueType value_type() const { return primary_sub_type_; }

private:
  /**
   * Key/Value used in the map
   */
  std::map<K, V> map_;

  void initialize(const CassValue* value) {
    // Call the parent class
    Collection::initialize(value);

    // Add the values to the map
    if (!is_null_) {
      const CassValue* current_value = next();
      while (current_value) {
        K key = K(current_value);
        current_value = next();
        V value = V(current_value);
        map_.insert(std::pair<K, V>(key, value));
        current_value = next();
      }
    }
  }
};

template <class K, class V>
inline std::ostream& operator<<(std::ostream& os, const Map<K, V>& map) {
  os << map.cql_value();
  return os;
}

}} // namespace test::driver

#endif // __TEST_MAP_HPP__