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#pragma once
#include <Interpreters/IInterpreter.h>
#include <Interpreters/executeQuery.h>
#include <Parsers/ASTRenameQuery.h>
#include <Parsers/IAST_fwd.h>
#include <Parsers/MySQL/ASTAlterQuery.h>
#include <Parsers/MySQL/ASTCreateQuery.h>
#include <Parsers/MySQL/ASTDropQuery.h>
#include <Parsers/queryToString.h>
#include <Parsers/ASTExpressionList.h>
namespace DB
{
class NamesAndTypesList;
namespace MySQLInterpreter
{
struct InterpreterDropImpl
{
using TQuery = MySQLParser::ASTDropQuery;
static void validate(const TQuery & query, ContextPtr context);
static ASTs getRewrittenQueries(
const TQuery & drop_query, ContextPtr context, const String & mapped_to_database, const String & mysql_database);
};
struct InterpreterAlterImpl
{
using TQuery = MySQLParser::ASTAlterQuery;
static void validate(const TQuery & query, ContextPtr context);
static ASTs getRewrittenQueries(
const TQuery & alter_query, ContextPtr context, const String & mapped_to_database, const String & mysql_database);
};
struct InterpreterRenameImpl
{
using TQuery = ASTRenameQuery;
static void validate(const TQuery & query, ContextPtr context);
static ASTs getRewrittenQueries(
const TQuery & rename_query, ContextPtr context, const String & mapped_to_database, const String & mysql_database);
};
struct InterpreterCreateImpl
{
using TQuery = MySQLParser::ASTCreateQuery;
static void validate(const TQuery & query, ContextPtr context);
static ASTs getRewrittenQueries(
const TQuery & create_query, ContextPtr context, const String & mapped_to_database, const String & mysql_database);
};
template <typename InterpreterImpl>
class InterpreterMySQLDDLQuery : public IInterpreter, WithMutableContext
{
public:
InterpreterMySQLDDLQuery(
const ASTPtr & query_ptr_, ContextMutablePtr context_, const String & mapped_to_database_, const String & mysql_database_)
: WithMutableContext(context_), query_ptr(query_ptr_), mapped_to_database(mapped_to_database_), mysql_database(mysql_database_)
{
}
BlockIO execute() override
{
const typename InterpreterImpl::TQuery & query = query_ptr->as<typename InterpreterImpl::TQuery &>();
InterpreterImpl::validate(query, getContext());
ASTs rewritten_queries = InterpreterImpl::getRewrittenQueries(query, getContext(), mapped_to_database, mysql_database);
for (const auto & rewritten_query : rewritten_queries)
executeQuery("/* Rewritten MySQL DDL Query */ " + queryToString(rewritten_query), getContext(), true);
return BlockIO{};
}
private:
ASTPtr query_ptr;
const String mapped_to_database;
const String mysql_database;
};
using InterpreterMySQLDropQuery = InterpreterMySQLDDLQuery<InterpreterDropImpl>;
using InterpreterMySQLAlterQuery = InterpreterMySQLDDLQuery<InterpreterAlterImpl>;
using InterpreterMySQLRenameQuery = InterpreterMySQLDDLQuery<InterpreterRenameImpl>;
using InterpreterMySQLCreateQuery = InterpreterMySQLDDLQuery<InterpreterCreateImpl>;
NamesAndTypesList getColumnsList(const ASTExpressionList * columns_definition);
}
}
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