327 lines
9.2 KiB
C++
327 lines
9.2 KiB
C++
/**
|
|
*
|
|
* create_model.h
|
|
* An Tao
|
|
*
|
|
* Copyright 2018, An Tao. All rights reserved.
|
|
* https://github.com/an-tao/drogon
|
|
* Use of this source code is governed by a MIT license
|
|
* that can be found in the License file.
|
|
*
|
|
* Drogon
|
|
*
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <drogon/config.h>
|
|
#include <drogon/DrTemplateBase.h>
|
|
#include <json/json.h>
|
|
#include <drogon/orm/DbClient.h>
|
|
using namespace drogon::orm;
|
|
#include <drogon/DrObject.h>
|
|
#include "CommandHandler.h"
|
|
#include <string>
|
|
#include <algorithm>
|
|
|
|
using namespace drogon;
|
|
|
|
namespace drogon_ctl
|
|
{
|
|
struct ColumnInfo
|
|
{
|
|
std::string colName_;
|
|
std::string colValName_;
|
|
std::string colTypeName_;
|
|
std::string colType_;
|
|
std::string colDatabaseType_;
|
|
std::string dbType_;
|
|
ssize_t colLength_{0};
|
|
size_t index_{0};
|
|
bool isAutoVal_{false};
|
|
bool isPrimaryKey_{false};
|
|
bool notNull_{false};
|
|
bool hasDefaultVal_{false};
|
|
};
|
|
|
|
inline std::string nameTransform(const std::string &origName, bool isType)
|
|
{
|
|
auto str = origName;
|
|
std::transform(str.begin(), str.end(), str.begin(), tolower);
|
|
std::string::size_type startPos = 0;
|
|
std::string::size_type pos;
|
|
std::string ret;
|
|
do
|
|
{
|
|
pos = str.find("_", startPos);
|
|
if (pos == std::string::npos)
|
|
{
|
|
pos = str.find(".", startPos);
|
|
}
|
|
if (pos != std::string::npos)
|
|
ret += str.substr(startPos, pos - startPos);
|
|
else
|
|
{
|
|
ret += str.substr(startPos);
|
|
break;
|
|
}
|
|
while (str[pos] == '_' || str[pos] == '.')
|
|
++pos;
|
|
if (str[pos] >= 'a' && str[pos] <= 'z')
|
|
str[pos] += ('A' - 'a');
|
|
startPos = pos;
|
|
} while (1);
|
|
if (isType && ret[0] >= 'a' && ret[0] <= 'z')
|
|
ret[0] += ('A' - 'a');
|
|
return ret;
|
|
}
|
|
class PivotTable
|
|
{
|
|
public:
|
|
PivotTable() = default;
|
|
PivotTable(const Json::Value &json)
|
|
: tableName_(json.get("table_name", "").asString())
|
|
{
|
|
if (tableName_.empty())
|
|
{
|
|
throw std::runtime_error("table_name can't be empty");
|
|
}
|
|
originalKey_ = json.get("original_key", "").asString();
|
|
if (originalKey_.empty())
|
|
{
|
|
throw std::runtime_error("original_key can't be empty");
|
|
}
|
|
targetKey_ = json.get("target_key", "").asString();
|
|
if (targetKey_.empty())
|
|
{
|
|
throw std::runtime_error("target_key can't be empty");
|
|
}
|
|
}
|
|
PivotTable reverse() const
|
|
{
|
|
PivotTable pivot;
|
|
pivot.tableName_ = tableName_;
|
|
pivot.originalKey_ = targetKey_;
|
|
pivot.targetKey_ = originalKey_;
|
|
return pivot;
|
|
}
|
|
const std::string &tableName() const
|
|
{
|
|
return tableName_;
|
|
}
|
|
const std::string &originalKey() const
|
|
{
|
|
return originalKey_;
|
|
}
|
|
const std::string &targetKey() const
|
|
{
|
|
return targetKey_;
|
|
}
|
|
|
|
private:
|
|
std::string tableName_;
|
|
std::string originalKey_;
|
|
std::string targetKey_;
|
|
};
|
|
class Relationship
|
|
{
|
|
public:
|
|
enum class Type
|
|
{
|
|
HasOne,
|
|
HasMany,
|
|
ManyToMany
|
|
};
|
|
Relationship(const Json::Value &relationship)
|
|
{
|
|
auto type = relationship.get("type", "has one").asString();
|
|
if (type == "has one")
|
|
{
|
|
type_ = Relationship::Type::HasOne;
|
|
}
|
|
else if (type == "has many")
|
|
{
|
|
type_ = Relationship::Type::HasMany;
|
|
}
|
|
else if (type == "many to many")
|
|
{
|
|
type_ = Relationship::Type::ManyToMany;
|
|
}
|
|
else
|
|
{
|
|
char message[128];
|
|
snprintf(message,
|
|
sizeof(message),
|
|
"Invalid relationship type: %s",
|
|
type.data());
|
|
throw std::runtime_error(message);
|
|
}
|
|
originalTableName_ =
|
|
relationship.get("original_table_name", "").asString();
|
|
if (originalTableName_.empty())
|
|
{
|
|
throw std::runtime_error("original_table_name can't be empty");
|
|
}
|
|
originalKey_ = relationship.get("original_key", "").asString();
|
|
if (originalKey_.empty())
|
|
{
|
|
throw std::runtime_error("original_key can't be empty");
|
|
}
|
|
originalTableAlias_ =
|
|
relationship.get("original_table_alias", "").asString();
|
|
targetTableName_ = relationship.get("target_table_name", "").asString();
|
|
if (targetTableName_.empty())
|
|
{
|
|
throw std::runtime_error("target_table_name can't be empty");
|
|
}
|
|
targetKey_ = relationship.get("target_key", "").asString();
|
|
if (targetKey_.empty())
|
|
{
|
|
throw std::runtime_error("target_key can't be empty");
|
|
}
|
|
targetTableAlias_ =
|
|
relationship.get("target_table_alias", "").asString();
|
|
enableReverse_ = relationship.get("enable_reverse", false).asBool();
|
|
if (type_ == Type::ManyToMany)
|
|
{
|
|
auto &pivot = relationship["pivot_table"];
|
|
if (pivot.isNull())
|
|
{
|
|
throw std::runtime_error(
|
|
"ManyToMany relationship needs a pivot table");
|
|
}
|
|
pivotTable_ = PivotTable(pivot);
|
|
}
|
|
}
|
|
Relationship() = default;
|
|
Relationship reverse() const
|
|
{
|
|
Relationship r;
|
|
if (type_ == Type::HasMany)
|
|
{
|
|
r.type_ = Type::HasOne;
|
|
}
|
|
else
|
|
{
|
|
r.type_ = type_;
|
|
}
|
|
r.originalTableName_ = targetTableName_;
|
|
r.originalTableAlias_ = targetTableAlias_;
|
|
r.originalKey_ = targetKey_;
|
|
r.targetTableName_ = originalTableName_;
|
|
r.targetTableAlias_ = originalTableAlias_;
|
|
r.targetKey_ = originalKey_;
|
|
r.enableReverse_ = enableReverse_;
|
|
r.pivotTable_ = pivotTable_.reverse();
|
|
return r;
|
|
}
|
|
Type type() const
|
|
{
|
|
return type_;
|
|
}
|
|
bool enableReverse() const
|
|
{
|
|
return enableReverse_;
|
|
}
|
|
const std::string &originalTableName() const
|
|
{
|
|
return originalTableName_;
|
|
}
|
|
const std::string &originalTableAlias() const
|
|
{
|
|
return originalTableAlias_;
|
|
}
|
|
const std::string &originalKey() const
|
|
{
|
|
return originalKey_;
|
|
}
|
|
const std::string &targetTableName() const
|
|
{
|
|
return targetTableName_;
|
|
}
|
|
const std::string &targetTableAlias() const
|
|
{
|
|
return targetTableAlias_;
|
|
}
|
|
const std::string &targetKey() const
|
|
{
|
|
return targetKey_;
|
|
}
|
|
const PivotTable &pivotTable() const
|
|
{
|
|
return pivotTable_;
|
|
}
|
|
|
|
private:
|
|
Type type_{Type::HasOne};
|
|
std::string originalTableName_;
|
|
std::string originalTableAlias_;
|
|
std::string targetTableName_;
|
|
std::string targetTableAlias_;
|
|
std::string originalKey_;
|
|
std::string targetKey_;
|
|
bool enableReverse_{false};
|
|
PivotTable pivotTable_;
|
|
};
|
|
class create_model : public DrObject<create_model>, public CommandHandler
|
|
{
|
|
public:
|
|
virtual void handleCommand(std::vector<std::string> ¶meters) override;
|
|
virtual std::string script() override
|
|
{
|
|
return "create Model classes files";
|
|
}
|
|
|
|
protected:
|
|
void createModel(const std::string &path,
|
|
const std::string &singleModelName);
|
|
void createModel(const std::string &path,
|
|
const Json::Value &config,
|
|
const std::string &singleModelName);
|
|
#if USE_POSTGRESQL
|
|
void createModelClassFromPG(const std::string &path,
|
|
const DbClientPtr &client,
|
|
const std::string &tableName,
|
|
const std::string &schema,
|
|
const Json::Value &restfulApiConfig,
|
|
const std::vector<Relationship> &relationships);
|
|
void createModelFromPG(
|
|
const std::string &path,
|
|
const DbClientPtr &client,
|
|
const std::string &schema,
|
|
const Json::Value &restfulApiConfig,
|
|
std::map<std::string, std::vector<Relationship>> &relationships);
|
|
#endif
|
|
#if USE_MYSQL
|
|
void createModelClassFromMysql(
|
|
const std::string &path,
|
|
const DbClientPtr &client,
|
|
const std::string &tableName,
|
|
const Json::Value &restfulApiConfig,
|
|
const std::vector<Relationship> &relationships);
|
|
void createModelFromMysql(
|
|
const std::string &path,
|
|
const DbClientPtr &client,
|
|
const Json::Value &restfulApiConfig,
|
|
std::map<std::string, std::vector<Relationship>> &relationships);
|
|
#endif
|
|
#if USE_SQLITE3
|
|
void createModelClassFromSqlite3(
|
|
const std::string &path,
|
|
const DbClientPtr &client,
|
|
const std::string &tableName,
|
|
const Json::Value &restfulApiConfig,
|
|
const std::vector<Relationship> &relationships);
|
|
void createModelFromSqlite3(
|
|
const std::string &path,
|
|
const DbClientPtr &client,
|
|
const Json::Value &restfulApiConfig,
|
|
std::map<std::string, std::vector<Relationship>> &relationships);
|
|
#endif
|
|
void createRestfulAPIController(const DrTemplateData &tableInfo,
|
|
const Json::Value &restfulApiConfig);
|
|
std::string dbname_;
|
|
bool forceOverwrite_{false};
|
|
};
|
|
} // namespace drogon_ctl
|