C++ Ptr::GetFieldId方法代码示例

void ConfigObject::DumpModifiedAttributes(const std::function<void(const ConfigObject::Ptr&, const String&, const Value&)>& callback)
{
	for (const Type::Ptr& type : Type::GetAllTypes()) {
		auto *dtype = dynamic_cast<ConfigType *>(type.get());

		if (!dtype)
			continue;

		for (const ConfigObject::Ptr& object : dtype->GetObjects()) {
			Dictionary::Ptr originalAttributes = object->GetOriginalAttributes();

			if (!originalAttributes)
				continue;

			ObjectLock olock(originalAttributes);
			for (const Dictionary::Pair& kv : originalAttributes) {
				String key = kv.first;

				Type::Ptr type = object->GetReflectionType();

				std::vector<String> tokens = key.Split(".");

				String fieldName = tokens[0];
				int fid = type->GetFieldId(fieldName);

				Value currentValue = object->GetField(fid);
				Value modifiedValue;

				if (tokens.size() > 1) {
					Value current = currentValue;

					for (std::vector<String>::size_type i = 1; i < tokens.size() - 1; i++) {
						if (!current.IsObjectType<Dictionary>())
							BOOST_THROW_EXCEPTION(std::invalid_argument("Value must be a dictionary."));

						Dictionary::Ptr dict = current;
						const String& key = tokens[i];

						if (!dict->Contains(key))
							break;

						current = dict->Get(key);
					}

					if (!current.IsObjectType<Dictionary>())
						BOOST_THROW_EXCEPTION(std::invalid_argument("Value must be a dictionary."));

					Dictionary::Ptr dict = current;
					const String& key = tokens[tokens.size() - 1];

					modifiedValue = dict->Get(key);
				} else
					modifiedValue = currentValue;

				callback(object, key, modifiedValue);
			}
		}
	}

}

String ConfigObjectUtility::CreateObjectConfig(const Type::Ptr& type, const String& fullName,
    bool ignoreOnError, const Array::Ptr& templates, const Dictionary::Ptr& attrs)
{
	NameComposer *nc = dynamic_cast<NameComposer *>(type.get());
	Dictionary::Ptr nameParts;
	String name;

	if (nc) {
		nameParts = nc->ParseName(fullName);
		name = nameParts->Get("name");
	} else
		name = fullName;

	Dictionary::Ptr allAttrs = new Dictionary();

	if (attrs) {
		attrs->CopyTo(allAttrs);

		ObjectLock olock(attrs);
		BOOST_FOREACH(const Dictionary::Pair& kv, attrs) {
			int fid = type->GetFieldId(kv.first.SubStr(0, kv.first.FindFirstOf(".")));

			if (fid < 0)
				BOOST_THROW_EXCEPTION(ScriptError("Invalid attribute specified: " + kv.first));

			Field field = type->GetFieldInfo(fid);

			if (!(field.Attributes & FAConfig) || kv.first == "name")
				BOOST_THROW_EXCEPTION(ScriptError("Attribute is marked for internal use only and may not be set: " + kv.first));
		}
	}

static void TypeRegisterAttributeHandler(const String& fieldName, const Function::Ptr& callback)
{
	ScriptFrame *vframe = ScriptFrame::GetCurrentFrame();
	Type::Ptr self = static_cast<Type::Ptr>(vframe->Self);
	
	int fid = self->GetFieldId(fieldName);
	self->RegisterAttributeHandler(fid, boost::bind(&InvokeAttributeHandlerHelper, callback, _1, _2));
}

bool Object::HasOwnField(const String& field) const
{
	Type::Ptr type = GetReflectionType();

	if (!type)
		return false;

	return type->GetFieldId(field) != -1;
}

int PrimitiveType::GetFieldId(const String& name) const
{
	Type::Ptr base = GetBaseType();

	if (base)
		return base->GetFieldId(name);
	else
		return -1;
}

bool Object::GetOwnField(const String& field, Value *result) const
{
	Type::Ptr type = GetReflectionType();

	if (!type)
		return false;

	int tid = type->GetFieldId(field);

	if (tid == -1)
		return false;

	*result = GetField(tid);
	return true;
}

String ConfigObjectUtility::CreateObjectConfig(const Type::Ptr& type, const String& fullName,
    bool ignoreOnError, const Array::Ptr& templates, const Dictionary::Ptr& attrs)
{
	NameComposer *nc = dynamic_cast<NameComposer *>(type.get());
	Dictionary::Ptr nameParts;
	String name;

	if (nc) {
		nameParts = nc->ParseName(fullName);
		name = nameParts->Get("name");
	} else
		name = fullName;

	Dictionary::Ptr allAttrs = new Dictionary();

	if (attrs) {
		attrs->CopyTo(allAttrs);

		ObjectLock olock(attrs);
		for (const Dictionary::Pair& kv : attrs) {
			int fid = type->GetFieldId(kv.first.SubStr(0, kv.first.FindFirstOf(".")));

			if (fid < 0)
				BOOST_THROW_EXCEPTION(ScriptError("Invalid attribute specified: " + kv.first));

			Field field = type->GetFieldInfo(fid);

			if (!(field.Attributes & FAConfig) || kv.first == "name")
				BOOST_THROW_EXCEPTION(ScriptError("Attribute is marked for internal use only and may not be set: " + kv.first));
		}
	}

	if (nameParts)
		nameParts->CopyTo(allAttrs);

	allAttrs->Remove("name");

	/* update the version for config sync */
	allAttrs->Set("version", Utility::GetTime());

	std::ostringstream config;
	ConfigWriter::EmitConfigItem(config, type->GetName(), name, false, ignoreOnError, templates, allAttrs);
	ConfigWriter::EmitRaw(config, "\n");

	return config.str();
}

Value Object::GetFieldByName(const String& field, bool sandboxed, const DebugInfo& debugInfo) const
{
	Type::Ptr type = GetReflectionType();

	if (!type)
		return Empty;

	int fid = type->GetFieldId(field);

	if (fid == -1)
		return GetPrototypeField(const_cast<Object *>(this), field, true, debugInfo);

	if (sandboxed) {
		Field fieldInfo = type->GetFieldInfo(fid);

		if (fieldInfo.Attributes & FANoUserView)
			BOOST_THROW_EXCEPTION(ScriptError("Accessing the field '" + field + "' for type '" + type->GetName() + "' is not allowed in sandbox mode.", debugInfo));
	}

	return GetField(fid);
}

void Object::SetFieldByName(const String& field, const Value& value, const DebugInfo& debugInfo)
{
	Type::Ptr type = GetReflectionType();

	if (!type)
		BOOST_THROW_EXCEPTION(ScriptError("Cannot set field on object.", debugInfo));

	int fid = type->GetFieldId(field);

	if (fid == -1)
		BOOST_THROW_EXCEPTION(ScriptError("Attribute '" + field + "' does not exist.", debugInfo));

	try {
		SetField(fid, value);
	} catch (const boost::bad_lexical_cast&) {
		Field fieldInfo = type->GetFieldInfo(fid);
		Type::Ptr ftype = Type::GetByName(fieldInfo.TypeName);
		BOOST_THROW_EXCEPTION(ScriptError("Attribute '" + field + "' cannot be set to value of type '" + value.GetTypeName() + "', expected '" + ftype->GetName() + "'", debugInfo));
	} catch (const std::bad_cast&) {
		Field fieldInfo = type->GetFieldInfo(fid);
		Type::Ptr ftype = Type::GetByName(fieldInfo.TypeName);
		BOOST_THROW_EXCEPTION(ScriptError("Attribute '" + field + "' cannot be set to value of type '" + value.GetTypeName() + "', expected '" + ftype->GetName() + "'", debugInfo));
	}
}

void ConfigObject::RestoreAttribute(const String& attr, bool updateVersion)
{
	Type::Ptr type = GetReflectionType();

	std::vector<String> tokens = attr.Split(".");

	String fieldName = tokens[0];

	int fid = type->GetFieldId(fieldName);

	Value currentValue = GetField(fid);

	Dictionary::Ptr original_attributes = GetOriginalAttributes();

	if (!original_attributes)
		return;

	Value oldValue = original_attributes->Get(attr);
	Value newValue;

	if (tokens.size() > 1) {
		newValue = currentValue.Clone();
		Value current = newValue;

		if (current.IsEmpty())
			BOOST_THROW_EXCEPTION(std::invalid_argument("Cannot restore non-existent object attribute"));

		String prefix = tokens[0];

		for (std::vector<String>::size_type i = 1; i < tokens.size() - 1; i++) {
			if (!current.IsObjectType<Dictionary>())
				BOOST_THROW_EXCEPTION(std::invalid_argument("Value must be a dictionary."));

			Dictionary::Ptr dict = current;

			const String& key = tokens[i];
			prefix += "." + key;

			if (!dict->Contains(key))
				BOOST_THROW_EXCEPTION(std::invalid_argument("Cannot restore non-existent object attribute"));

			current = dict->Get(key);
		}

		if (!current.IsObjectType<Dictionary>())
			BOOST_THROW_EXCEPTION(std::invalid_argument("Value must be a dictionary."));

		Dictionary::Ptr dict = current;

		const String& key = tokens[tokens.size() - 1];
		prefix += "." + key;

		std::vector<String> restoredAttrs;

		{
			ObjectLock olock(original_attributes);
			for (const auto& kv : original_attributes) {
				std::vector<String> originalTokens = String(kv.first).Split(".");

				if (tokens.size() > originalTokens.size())
					continue;

				bool match = true;
				for (std::vector<String>::size_type i = 0; i < tokens.size(); i++) {
					if (tokens[i] != originalTokens[i]) {
						match = false;
						break;
					}
				}

				if (!match)
					continue;

				Dictionary::Ptr dict;

				if (tokens.size() == originalTokens.size())
					dict = current;
				else {
					Value currentSub = current;

					for (std::vector<String>::size_type i = tokens.size() - 1; i < originalTokens.size() - 1; i++) {
						dict = currentSub;
						currentSub = dict->Get(originalTokens[i]);

						if (!currentSub.IsObjectType<Dictionary>()) {
							currentSub = new Dictionary();
							dict->Set(originalTokens[i], currentSub);
						}
					}

					dict = currentSub;
				}

				dict->Set(originalTokens[originalTokens.size() - 1], kv.second);
				restoredAttrs.push_back(kv.first);
			}
		}

		for (const String& attr : restoredAttrs)
			original_attributes->Remove(attr);
//.........这里部分代码省略.........

void ConfigObject::ModifyAttribute(const String& attr, const Value& value, bool updateVersion)
{
	Dictionary::Ptr original_attributes = GetOriginalAttributes();
	bool updated_original_attributes = false;

	Type::Ptr type = GetReflectionType();

	std::vector<String> tokens = attr.Split(".");

	String fieldName = tokens[0];

	int fid = type->GetFieldId(fieldName);
	Field field = type->GetFieldInfo(fid);

	if (field.Attributes & FANoUserModify)
		BOOST_THROW_EXCEPTION(std::invalid_argument("Attribute cannot be modified."));

	if (field.Attributes & FAConfig) {
		if (!original_attributes) {
			original_attributes = new Dictionary();
			SetOriginalAttributes(original_attributes, true);
		}
	}

	Value oldValue = GetField(fid);
	Value newValue;

	if (tokens.size() > 1) {
		newValue = oldValue.Clone();
		Value current = newValue;

		if (current.IsEmpty()) {
			current = new Dictionary();
			newValue = current;
		}

		String prefix = tokens[0];

		for (std::vector<String>::size_type i = 1; i < tokens.size() - 1; i++) {
			if (!current.IsObjectType<Dictionary>())
				BOOST_THROW_EXCEPTION(std::invalid_argument("Value must be a dictionary."));

			Dictionary::Ptr dict = current;

			const String& key = tokens[i];
			prefix += "." + key;

			if (!dict->Get(key, &current)) {
				current = new Dictionary();
				dict->Set(key, current);
			}
		}

		if (!current.IsObjectType<Dictionary>())
			BOOST_THROW_EXCEPTION(std::invalid_argument("Value must be a dictionary."));

		Dictionary::Ptr dict = current;

		const String& key = tokens[tokens.size() - 1];
		prefix += "." + key;

		/* clone it for original attributes */
		oldValue = dict->Get(key).Clone();

		if (field.Attributes & FAConfig) {
			updated_original_attributes = true;

			if (oldValue.IsObjectType<Dictionary>()) {
				Dictionary::Ptr oldDict = oldValue;
				ObjectLock olock(oldDict);
				for (const auto& kv : oldDict) {
					String key = prefix + "." + kv.first;
					if (!original_attributes->Contains(key))
						original_attributes->Set(key, kv.second);
				}

				/* store the new value as null */
				if (value.IsObjectType<Dictionary>()) {
					Dictionary::Ptr valueDict = value;
					ObjectLock olock(valueDict);
					for (const auto& kv : valueDict) {
						String key = attr + "." + kv.first;
						if (!original_attributes->Contains(key))
							original_attributes->Set(key, Empty);
					}
				}
			} else if (!original_attributes->Contains(attr))
				original_attributes->Set(attr, oldValue);
		}

		dict->Set(key, value);
	} else {
		newValue = value;

		if (field.Attributes & FAConfig) {
			if (!original_attributes->Contains(attr)) {
				updated_original_attributes = true;
				original_attributes->Set(attr, oldValue);
			}
		}
//.........这里部分代码省略.........

Dictionary::Ptr ObjectQueryHandler::SerializeObjectAttrs(const Object::Ptr& object,
	const String& attrPrefix, const Array::Ptr& attrs, bool isJoin, bool allAttrs)
{
	Type::Ptr type = object->GetReflectionType();

	std::vector<int> fids;

	if (isJoin && attrs) {
		ObjectLock olock(attrs);
		for (const String& attr : attrs) {
			if (attr == attrPrefix) {
				allAttrs = true;
				break;
			}
		}
	}

	if (!isJoin && (!attrs || attrs->GetLength() == 0))
		allAttrs = true;

	if (allAttrs) {
		for (int fid = 0; fid < type->GetFieldCount(); fid++) {
			fids.push_back(fid);
		}
	} else if (attrs) {
		ObjectLock olock(attrs);
		for (const String& attr : attrs) {
			String userAttr;

			if (isJoin) {
				String::SizeType dpos = attr.FindFirstOf(".");
				if (dpos == String::NPos)
					continue;

				String userJoinAttr = attr.SubStr(0, dpos);
				if (userJoinAttr != attrPrefix)
					continue;

				userAttr = attr.SubStr(dpos + 1);
			} else
				userAttr = attr;

			int fid = type->GetFieldId(userAttr);

			if (fid < 0)
				BOOST_THROW_EXCEPTION(ScriptError("Invalid field specified: " + userAttr));

			fids.push_back(fid);
		}
	}

	DictionaryData resultAttrs;
	resultAttrs.reserve(fids.size());

	for (int fid : fids) {
		Field field = type->GetFieldInfo(fid);

		Value val = object->GetField(fid);

		/* hide attributes which shouldn't be user-visible */
		if (field.Attributes & FANoUserView)
			continue;

		/* hide internal navigation fields */
		if (field.Attributes & FANavigation && !(field.Attributes & (FAConfig | FAState)))
			continue;

		Value sval = Serialize(val, FAConfig | FAState);
		resultAttrs.emplace_back(field.Name, sval);
	}

	return new Dictionary(std::move(resultAttrs));
}

//.........这里部分代码省略.........
			continue;

		if (!allJoins && userJoinAttrs.find(field.NavigationName) == userJoinAttrs.end())
			continue;

		joinAttrs.insert(field.Name);
	}

	for (const ConfigObject::Ptr& obj : objs) {
		DictionaryData result1{
			{ "name", obj->GetName() },
			{ "type", obj->GetReflectionType()->GetName() }
		};

		DictionaryData metaAttrs;

		if (umetas) {
			ObjectLock olock(umetas);
			for (const String& meta : umetas) {
				if (meta == "used_by") {
					Array::Ptr used_by = new Array();
					metaAttrs.emplace_back("used_by", used_by);

					for (const Object::Ptr& pobj : DependencyGraph::GetParents((obj)))
					{
						ConfigObject::Ptr configObj = dynamic_pointer_cast<ConfigObject>(pobj);

						if (!configObj)
							continue;

						used_by->Add(new Dictionary({
							{ "type", configObj->GetReflectionType()->GetName() },
							{ "name", configObj->GetName() }
						}));
					}
				} else if (meta == "location") {
					metaAttrs.emplace_back("location", obj->GetSourceLocation());
				} else {
					HttpUtility::SendJsonError(response, params, 400, "Invalid field specified for meta: " + meta);
					return true;
				}
			}
		}

		result1.emplace_back("meta", new Dictionary(std::move(metaAttrs)));

		try {
			result1.emplace_back("attrs", SerializeObjectAttrs(obj, String(), uattrs, false, false));
		} catch (const ScriptError& ex) {
			HttpUtility::SendJsonError(response, params, 400, ex.what());
			return true;
		}

		DictionaryData joins;

		for (const String& joinAttr : joinAttrs) {
			Object::Ptr joinedObj;
			int fid = type->GetFieldId(joinAttr);

			if (fid < 0) {
				HttpUtility::SendJsonError(response, params, 400, "Invalid field specified for join: " + joinAttr);
				return true;
			}

			Field field = type->GetFieldInfo(fid);

			if (!(field.Attributes & FANavigation)) {
				HttpUtility::SendJsonError(response, params, 400, "Not a joinable field: " + joinAttr);
				return true;
			}

			joinedObj = obj->NavigateField(fid);

			if (!joinedObj)
				continue;

			String prefix = field.NavigationName;

			try {
				joins.emplace_back(prefix, SerializeObjectAttrs(joinedObj, prefix, ujoins, true, allJoins));
			} catch (const ScriptError& ex) {
				HttpUtility::SendJsonError(response, params, 400, ex.what());
				return true;
			}
		}

		result1.emplace_back("joins", new Dictionary(std::move(joins)));

		results.push_back(new Dictionary(std::move(result1)));
	}

	Dictionary::Ptr result = new Dictionary({
		{ "results", new Array(std::move(results)) }
	});

	response.SetStatus(200, "OK");
	HttpUtility::SendJsonBody(response, params, result);

	return true;
}