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#include <Interpreters/InterpreterCreateFunctionQuery.h>
#include <Access/ContextAccess.h>
#include <Functions/UserDefined/IUserDefinedSQLObjectsStorage.h>
#include <Functions/UserDefined/UserDefinedSQLFunctionFactory.h>
#include <Interpreters/Context.h>
#include <Interpreters/executeDDLQueryOnCluster.h>
#include <Interpreters/removeOnClusterClauseIfNeeded.h>
#include <Interpreters/FunctionNameNormalizer.h>
#include <Parsers/ASTCreateFunctionQuery.h>
namespace DB
{
namespace ErrorCodes
{
extern const int INCORRECT_QUERY;
}
BlockIO InterpreterCreateFunctionQuery::execute()
{
FunctionNameNormalizer().visit(query_ptr.get());
const auto updated_query_ptr = removeOnClusterClauseIfNeeded(query_ptr, getContext());
ASTCreateFunctionQuery & create_function_query = updated_query_ptr->as<ASTCreateFunctionQuery &>();
AccessRightsElements access_rights_elements;
access_rights_elements.emplace_back(AccessType::CREATE_FUNCTION);
if (create_function_query.or_replace)
access_rights_elements.emplace_back(AccessType::DROP_FUNCTION);
auto current_context = getContext();
if (!create_function_query.cluster.empty())
{
if (current_context->getUserDefinedSQLObjectsStorage().isReplicated())
throw Exception(ErrorCodes::INCORRECT_QUERY, "ON CLUSTER is not allowed because used-defined functions are replicated automatically");
DDLQueryOnClusterParams params;
params.access_to_check = std::move(access_rights_elements);
return executeDDLQueryOnCluster(updated_query_ptr, current_context, params);
}
current_context->checkAccess(access_rights_elements);
auto function_name = create_function_query.getFunctionName();
bool throw_if_exists = !create_function_query.if_not_exists && !create_function_query.or_replace;
bool replace_if_exists = create_function_query.or_replace;
UserDefinedSQLFunctionFactory::instance().registerFunction(current_context, function_name, updated_query_ptr, throw_if_exists, replace_if_exists);
return {};
}
}
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