mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-18 12:22:12 +00:00
336 lines
10 KiB
C++
336 lines
10 KiB
C++
#pragma once
|
|
|
|
/**
|
|
* This file implements some functions that are dependent on Field type.
|
|
* Unlike SettingsCollection.h, we only have to include it once for each
|
|
* instantiation of SettingsCollection<>.
|
|
*/
|
|
|
|
#include <Common/SettingsChanges.h>
|
|
|
|
namespace DB
|
|
{
|
|
namespace details
|
|
{
|
|
struct SettingsCollectionUtils
|
|
{
|
|
static void serializeName(const StringRef & name, WriteBuffer & buf);
|
|
static String deserializeName(ReadBuffer & buf);
|
|
static void serializeFlag(bool flag, WriteBuffer & buf);
|
|
static bool deserializeFlag(ReadBuffer & buf);
|
|
static void skipValue(ReadBuffer & buf);
|
|
static void warningNameNotFound(const StringRef & name);
|
|
[[noreturn]] static void throwNameNotFound(const StringRef & name);
|
|
};
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
size_t SettingsCollection<Derived>::MemberInfos::findIndex(const StringRef & name) const
|
|
{
|
|
auto it = by_name_map.find(name);
|
|
if (it == by_name_map.end())
|
|
return static_cast<size_t>(-1); // npos
|
|
return it->second;
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
size_t SettingsCollection<Derived>::MemberInfos::findIndexStrict(const StringRef & name) const
|
|
{
|
|
auto it = by_name_map.find(name);
|
|
if (it == by_name_map.end())
|
|
details::SettingsCollectionUtils::throwNameNotFound(name);
|
|
return it->second;
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
const typename SettingsCollection<Derived>::MemberInfo * SettingsCollection<Derived>::MemberInfos::find(const StringRef & name) const
|
|
{
|
|
auto it = by_name_map.find(name);
|
|
if (it == by_name_map.end())
|
|
return nullptr;
|
|
else
|
|
return &infos[it->second];
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
const typename SettingsCollection<Derived>::MemberInfo & SettingsCollection<Derived>::MemberInfos::findStrict(const StringRef & name) const
|
|
{
|
|
return infos[findIndexStrict(name)];
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
void SettingsCollection<Derived>::MemberInfos::add(MemberInfo && member)
|
|
{
|
|
size_t index = infos.size();
|
|
infos.emplace_back(member);
|
|
by_name_map.emplace(infos.back().name, index);
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
const typename SettingsCollection<Derived>::MemberInfos &
|
|
SettingsCollection<Derived>::members()
|
|
{
|
|
static const MemberInfos the_instance;
|
|
return the_instance;
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
Field SettingsCollection<Derived>::const_reference::getValue() const
|
|
{
|
|
return member->get_field(*collection);
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
Field SettingsCollection<Derived>::valueToCorrespondingType(size_t index, const Field & value)
|
|
{
|
|
return members()[index].value_to_corresponding_type(value);
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
Field SettingsCollection<Derived>::valueToCorrespondingType(const StringRef & name, const Field & value)
|
|
{
|
|
return members().findStrict(name).value_to_corresponding_type(value);
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
typename SettingsCollection<Derived>::iterator SettingsCollection<Derived>::find(const StringRef & name)
|
|
{
|
|
const auto * member = members().find(name);
|
|
if (member)
|
|
return iterator(castToDerived(), member);
|
|
return end();
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
typename SettingsCollection<Derived>::const_iterator SettingsCollection<Derived>::find(const StringRef & name) const
|
|
{
|
|
const auto * member = members().find(name);
|
|
if (member)
|
|
return const_iterator(castToDerived(), member);
|
|
return end();
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
typename SettingsCollection<Derived>::iterator SettingsCollection<Derived>::findStrict(const StringRef & name)
|
|
{
|
|
return iterator(castToDerived(), &members().findStrict(name));
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
typename SettingsCollection<Derived>::const_iterator SettingsCollection<Derived>::findStrict(const StringRef & name) const
|
|
{
|
|
return const_iterator(castToDerived(), &members().findStrict(name));
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
Field SettingsCollection<Derived>::get(size_t index) const
|
|
{
|
|
return (*this)[index].getValue();
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
Field SettingsCollection<Derived>::get(const StringRef & name) const
|
|
{
|
|
return (*this)[name].getValue();
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
bool SettingsCollection<Derived>::tryGet(const StringRef & name, Field & value) const
|
|
{
|
|
auto it = find(name);
|
|
if (it == end())
|
|
return false;
|
|
value = it->getValue();
|
|
return true;
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
bool SettingsCollection<Derived>::tryGet(const StringRef & name, String & value) const
|
|
{
|
|
auto it = find(name);
|
|
if (it == end())
|
|
return false;
|
|
value = it->getValueAsString();
|
|
return true;
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
bool SettingsCollection<Derived>::operator ==(const Derived & rhs) const
|
|
{
|
|
const auto & the_members = members();
|
|
for (size_t i = 0; i != the_members.size(); ++i)
|
|
{
|
|
const auto & member = the_members[i];
|
|
bool left_changed = member.is_changed(castToDerived());
|
|
bool right_changed = member.is_changed(rhs);
|
|
if (left_changed || right_changed)
|
|
{
|
|
if (left_changed != right_changed)
|
|
return false;
|
|
if (member.get_field(castToDerived()) != member.get_field(rhs))
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
SettingsChanges SettingsCollection<Derived>::changes() const
|
|
{
|
|
SettingsChanges found_changes;
|
|
const auto & the_members = members();
|
|
for (size_t i = 0; i != the_members.size(); ++i)
|
|
{
|
|
const auto & member = the_members[i];
|
|
if (member.is_changed(castToDerived()))
|
|
found_changes.push_back({member.name.toString(), member.get_field(castToDerived())});
|
|
}
|
|
return found_changes;
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
void SettingsCollection<Derived>::applyChange(const SettingChange & change)
|
|
{
|
|
set(change.name, change.value);
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
void SettingsCollection<Derived>::applyChanges(const SettingsChanges & changes)
|
|
{
|
|
for (const SettingChange & change : changes)
|
|
applyChange(change);
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
void SettingsCollection<Derived>::copyChangesFrom(const Derived & src)
|
|
{
|
|
const auto & the_members = members();
|
|
for (size_t i = 0; i != the_members.size(); ++i)
|
|
{
|
|
const auto & member = the_members[i];
|
|
if (member.is_changed(src))
|
|
member.set_field(castToDerived(), member.get_field(src));
|
|
}
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
void SettingsCollection<Derived>::copyChangesTo(Derived & dest) const
|
|
{
|
|
dest.copyChangesFrom(castToDerived());
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
void SettingsCollection<Derived>::serialize(WriteBuffer & buf, SettingsBinaryFormat format) const
|
|
{
|
|
const auto & the_members = members();
|
|
for (size_t i = 0; i != the_members.size(); ++i)
|
|
{
|
|
const auto & member = the_members[i];
|
|
if (member.is_changed(castToDerived()))
|
|
{
|
|
details::SettingsCollectionUtils::serializeName(member.name, buf);
|
|
if (format >= SettingsBinaryFormat::STRINGS)
|
|
details::SettingsCollectionUtils::serializeFlag(member.is_important, buf);
|
|
member.serialize(castToDerived(), buf, format);
|
|
}
|
|
}
|
|
details::SettingsCollectionUtils::serializeName(StringRef{} /* empty string is a marker of the end of settings */, buf);
|
|
}
|
|
|
|
|
|
template <class Derived>
|
|
void SettingsCollection<Derived>::deserialize(ReadBuffer & buf, SettingsBinaryFormat format)
|
|
{
|
|
const auto & the_members = members();
|
|
while (true)
|
|
{
|
|
String name = details::SettingsCollectionUtils::deserializeName(buf);
|
|
if (name.empty() /* empty string is a marker of the end of settings */)
|
|
break;
|
|
auto * member = the_members.find(name);
|
|
bool is_important = (format >= SettingsBinaryFormat::STRINGS) ? details::SettingsCollectionUtils::deserializeFlag(buf) : true;
|
|
if (member)
|
|
{
|
|
member->deserialize(castToDerived(), buf, format);
|
|
}
|
|
else if (is_important)
|
|
{
|
|
details::SettingsCollectionUtils::throwNameNotFound(name);
|
|
}
|
|
else
|
|
{
|
|
details::SettingsCollectionUtils::warningNameNotFound(name);
|
|
details::SettingsCollectionUtils::skipValue(buf);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//-V:IMPLEMENT_SETTINGS_COLLECTION:501
|
|
#define IMPLEMENT_SETTINGS_COLLECTION(DERIVED_CLASS_NAME, LIST_OF_SETTINGS_MACRO) \
|
|
template<> \
|
|
SettingsCollection<DERIVED_CLASS_NAME>::MemberInfos::MemberInfos() \
|
|
{ \
|
|
using Derived = DERIVED_CLASS_NAME; \
|
|
struct Functions \
|
|
{ \
|
|
LIST_OF_SETTINGS_MACRO(IMPLEMENT_SETTINGS_COLLECTION_DEFINE_FUNCTIONS_HELPER_) \
|
|
}; \
|
|
constexpr int IMPORTANT = 1; \
|
|
UNUSED(IMPORTANT); \
|
|
LIST_OF_SETTINGS_MACRO(IMPLEMENT_SETTINGS_COLLECTION_ADD_MEMBER_INFO_HELPER_) \
|
|
} \
|
|
/** \
|
|
* Instantiation should happen when all method definitions from SettingsCollectionImpl.h \
|
|
* are accessible, so we instantiate explicitly. \
|
|
*/ \
|
|
template class SettingsCollection<DERIVED_CLASS_NAME>;
|
|
|
|
|
|
#define IMPLEMENT_SETTINGS_COLLECTION_DEFINE_FUNCTIONS_HELPER_(TYPE, NAME, DEFAULT, DESCRIPTION, FLAGS) \
|
|
static String NAME##_getString(const Derived & collection) { return collection.NAME.toString(); } \
|
|
static Field NAME##_getField(const Derived & collection) { return collection.NAME.toField(); } \
|
|
static void NAME##_setString(Derived & collection, const String & value) { collection.NAME.set(value); } \
|
|
static void NAME##_setField(Derived & collection, const Field & value) { collection.NAME.set(value); } \
|
|
static void NAME##_serialize(const Derived & collection, WriteBuffer & buf, SettingsBinaryFormat format) { collection.NAME.serialize(buf, format); } \
|
|
static void NAME##_deserialize(Derived & collection, ReadBuffer & buf, SettingsBinaryFormat format) { collection.NAME.deserialize(buf, format); } \
|
|
static String NAME##_valueToString(const Field & value) { TYPE temp{DEFAULT}; temp.set(value); return temp.toString(); } \
|
|
static Field NAME##_valueToCorrespondingType(const Field & value) { TYPE temp{DEFAULT}; temp.set(value); return temp.toField(); } \
|
|
|
|
|
|
#define IMPLEMENT_SETTINGS_COLLECTION_ADD_MEMBER_INFO_HELPER_(TYPE, NAME, DEFAULT, DESCRIPTION, FLAGS) \
|
|
add({StringRef(#NAME, strlen(#NAME)), \
|
|
StringRef(DESCRIPTION, strlen(DESCRIPTION)), \
|
|
StringRef(#TYPE, strlen(#TYPE)), \
|
|
FLAGS & IMPORTANT, \
|
|
[](const Derived & d) { return d.NAME.changed; }, \
|
|
&Functions::NAME##_getString, &Functions::NAME##_getField, \
|
|
&Functions::NAME##_setString, &Functions::NAME##_setField, \
|
|
&Functions::NAME##_serialize, &Functions::NAME##_deserialize, \
|
|
&Functions::NAME##_valueToString, &Functions::NAME##_valueToCorrespondingType});
|
|
}
|