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#if 0
#include <TableFunctions/TableFunctionMongoDB.h>
#include <Common/Exception.h>
#include <Interpreters/evaluateConstantExpression.h>
#include <Interpreters/Context.h>
#include <Parsers/ASTFunction.h>
#include <Parsers/ASTLiteral.h>
#include <Parsers/ASTIdentifier.h>
#include <TableFunctions/TableFunctionFactory.h>
#include <Interpreters/parseColumnsListForTableFunction.h>
#include <TableFunctions/registerTableFunctions.h>
#include <Storages/checkAndGetLiteralArgument.h>
#include <Storages/ColumnsDescription.h>
namespace DB
{
namespace ErrorCodes
{
extern const int BAD_ARGUMENTS;
extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
}
StoragePtr TableFunctionMongoDB::executeImpl(const ASTPtr & /*ast_function*/,
ContextPtr context, const String & table_name, ColumnsDescription /*cached_columns*/, bool is_insert_query) const
{
auto columns = getActualTableStructure(context, is_insert_query);
auto storage = std::make_shared<StorageMongoDB>(
StorageID(configuration->database, table_name),
configuration->host,
configuration->port,
configuration->database,
configuration->table,
configuration->username,
configuration->password,
configuration->options,
columns,
ConstraintsDescription(),
String{});
storage->startup();
return storage;
}
ColumnsDescription TableFunctionMongoDB::getActualTableStructure(ContextPtr context, bool /*is_insert_query*/) const
{
return parseColumnsListFromString(structure, context);
}
void TableFunctionMongoDB::parseArguments(const ASTPtr & ast_function, ContextPtr context)
{
const auto & func_args = ast_function->as<ASTFunction &>();
if (!func_args.arguments)
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Table function 'mongodb' must have arguments.");
ASTs & args = func_args.arguments->children;
if (args.size() < 6 || args.size() > 7)
{
throw Exception(ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH,
"Table function 'mongodb' requires from 6 to 7 parameters: "
"mongodb('host:port', database, collection, 'user', 'password', structure, [, 'options'])");
}
ASTs main_arguments(args.begin(), args.begin() + 5);
for (size_t i = 5; i < args.size(); ++i)
{
if (const auto * ast_func = typeid_cast<const ASTFunction *>(args[i].get()))
{
const auto * args_expr = assert_cast<const ASTExpressionList *>(ast_func->arguments.get());
auto function_args = args_expr->children;
if (function_args.size() != 2)
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Expected key-value defined argument");
auto arg_name = function_args[0]->as<ASTIdentifier>()->name();
if (arg_name == "structure")
structure = checkAndGetLiteralArgument<String>(function_args[1], "structure");
else if (arg_name == "options")
main_arguments.push_back(function_args[1]);
}
else if (i == 5)
{
structure = checkAndGetLiteralArgument<String>(args[i], "structure");
}
else if (i == 6)
{
main_arguments.push_back(args[i]);
}
}
configuration = StorageMongoDB::getConfiguration(main_arguments, context);
}
void registerTableFunctionMongoDB(TableFunctionFactory & factory)
{
factory.registerFunction<TableFunctionMongoDB>();
}
}
#endif
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