serializer.hpp
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/*************************************************************************
*
* Copyright 2016 Realm Inc.
*
* Licensed 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 REALM_UTIL_SERIALIZER_HPP
#define REALM_UTIL_SERIALIZER_HPP
#include <realm/table_ref.hpp>
#include <realm/util/optional.hpp>
#include <string>
#include <sstream>
#include <vector>
namespace realm {
class BinaryData;
struct ColKey;
struct null;
class ObjectId;
struct ObjKey;
struct ObjLink;
class StringData;
class Timestamp;
class LinkMap;
class UUID;
class TypeOfValue;
enum class ExpressionComparisonType : unsigned char;
namespace util {
namespace serializer {
// Definitions
template <typename T>
std::string print_value(T value);
template <typename T>
std::string print_value(Optional<T> value);
const static std::string value_separator = ".";
// Specializations declared here to be defined in the cpp file
template <> std::string print_value<>(BinaryData);
template <> std::string print_value<>(bool);
template <>
std::string print_value<>(float);
template <>
std::string print_value<>(double);
template <> std::string print_value<>(realm::null);
template <> std::string print_value<>(StringData);
template <> std::string print_value<>(realm::Timestamp);
template <>
std::string print_value<>(realm::ObjectId);
template <>
std::string print_value<>(realm::ObjKey);
template <>
std::string print_value<>(realm::ObjLink);
template <>
std::string print_value<>(realm::UUID);
template <>
std::string print_value<>(realm::TypeOfValue);
// General implementation for most types
template <typename T>
std::string print_value(T value)
{
std::stringstream ss;
ss << value;
return ss.str();
}
template <typename T>
std::string print_value(Optional<T> value)
{
if (bool(value)) {
return print_value(*value);
} else {
return "NULL";
}
}
StringData get_printable_table_name(StringData name, const std::string& prefix);
struct SerialisationState {
SerialisationState(const std::string& prefix)
: class_prefix(prefix)
{
}
std::string describe_column(ConstTableRef table, ColKey col_key);
std::string describe_columns(const LinkMap& link_map, ColKey target_col_key);
std::string describe_expression_type(ExpressionComparisonType type);
std::string get_column_name(ConstTableRef table, ColKey col_key);
std::string get_backlink_column_name(ConstTableRef from, ColKey col_key);
std::string get_variable_name(ConstTableRef table);
std::vector<std::string> subquery_prefix_list;
std::string class_prefix;
};
} // namespace serializer
} // namespace util
} // namespace realm
#endif // REALM_UTIL_SERIALIZER_HPP