int builtin_setenv(t_builtin const *builtin, int callback, t_sh *sh, t_proc *p)
{
if (callback == BLTIN_CB_BEFORE)
return (s_before(p));
if (callback == BLTIN_CB_EXEC)
exit(s_exec(builtin, p, sh));
if (callback == BLTIN_CB_AFTER)
return (s_after(sh, p));
return (ST_OK);
}
bool ParserAlterQuery::parseImpl(Pos & pos, Pos end, ASTPtr & node, Pos & max_parsed_pos, Expected & expected)
{
Pos begin = pos;
ParserKeyword s_alter_table("ALTER TABLE");
ParserKeyword s_add_column("ADD COLUMN");
ParserKeyword s_drop_column("DROP COLUMN");
ParserKeyword s_modify_column("MODIFY COLUMN");
ParserKeyword s_modify_primary_key("MODIFY PRIMARY KEY");
ParserKeyword s_attach_partition("ATTACH PARTITION");
ParserKeyword s_detach_partition("DETACH PARTITION");
ParserKeyword s_drop_partition("DROP PARTITION");
ParserKeyword s_attach_part("ATTACH PART");
ParserKeyword s_fetch_partition("FETCH PARTITION");
ParserKeyword s_freeze_partition("FREEZE PARTITION");
ParserKeyword s_reshard("RESHARD");
ParserKeyword s_partition("PARTITION");
ParserKeyword s_after("AFTER");
ParserKeyword s_from("FROM");
ParserKeyword s_from_partition("FROM PARTITION");
ParserKeyword s_copy("COPY");
ParserKeyword s_to("TO");
ParserKeyword s_using("USING");
ParserKeyword s_coordinate("COORDINATE");
ParserKeyword s_with("WITH");
ParserKeyword s_name("NAME");
ParserString s_dot(".");
ParserString s_comma(",");
ParserString s_doubledot("..");
ParserWhitespaceOrComments ws;
ParserIdentifier table_parser;
ParserCompoundIdentifier parser_name;
ParserCompoundColumnDeclaration parser_col_decl;
ParserLiteral parser_literal;
ParserUnsignedInteger parser_uint;
ParserStringLiteral parser_string_literal;
ASTPtr table;
ASTPtr database;
String cluster_str;
ASTPtr col_type;
ASTPtr col_after;
ASTPtr col_drop;
auto query = std::make_shared<ASTAlterQuery>();
ws.ignore(pos, end);
if (!s_alter_table.ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!table_parser.parse(pos, end, database, max_parsed_pos, expected))
return false;
/// Parse [db].name
if (s_dot.ignore(pos, end))
{
if (!table_parser.parse(pos, end, table, max_parsed_pos, expected))
return false;
query->table = typeid_cast<ASTIdentifier &>(*table).name;
query->database = typeid_cast<ASTIdentifier &>(*database).name;
}
else
{
table = database;
query->table = typeid_cast<ASTIdentifier &>(*table).name;
}
ws.ignore(pos, end);
if (ParserKeyword{"ON"}.ignore(pos, end, max_parsed_pos, expected))
{
if (!ASTQueryWithOnCluster::parse(pos, end, cluster_str, max_parsed_pos, expected))
return false;
}
bool parsing_finished = false;
do
{
ASTAlterQuery::Parameters params;
ws.ignore(pos, end);
if (s_add_column.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_col_decl.parse(pos, end, params.col_decl, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (s_after.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if(!parser_name.parse(pos, end, params.column, max_parsed_pos, expected))
return false;
}
params.type = ASTAlterQuery::ADD_COLUMN;
}
else if (s_drop_partition.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_literal.parse(pos, end, params.partition, max_parsed_pos, expected))
return false;
params.type = ASTAlterQuery::DROP_PARTITION;
}
else if (s_drop_column.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_name.parse(pos, end, params.column, max_parsed_pos, expected))
return false;
params.type = ASTAlterQuery::DROP_COLUMN;
params.detach = false;
if (s_from_partition.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_literal.parse(pos, end, params.partition, max_parsed_pos, expected))
return false;
}
}
else if (s_detach_partition.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_literal.parse(pos, end, params.partition, max_parsed_pos, expected))
return false;
params.type = ASTAlterQuery::DROP_PARTITION;
params.detach = true;
}
else if (s_attach_partition.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_literal.parse(pos, end, params.partition, max_parsed_pos, expected))
return false;
params.type = ASTAlterQuery::ATTACH_PARTITION;
}
else if (s_attach_part.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_literal.parse(pos, end, params.partition, max_parsed_pos, expected))
return false;
params.part = true;
params.type = ASTAlterQuery::ATTACH_PARTITION;
}
else if (s_fetch_partition.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_literal.parse(pos, end, params.partition, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!s_from.ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
ASTPtr ast_from;
if (!parser_string_literal.parse(pos, end, ast_from, max_parsed_pos, expected))
return false;
params.from = typeid_cast<const ASTLiteral &>(*ast_from).value.get<const String &>();
params.type = ASTAlterQuery::FETCH_PARTITION;
}
else if (s_freeze_partition.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_literal.parse(pos, end, params.partition, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
/// WITH NAME 'name' - place local backup to directory with specified name
if (s_with.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!s_name.ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
ASTPtr ast_with_name;
if (!parser_string_literal.parse(pos, end, ast_with_name, max_parsed_pos, expected))
return false;
params.with_name = typeid_cast<const ASTLiteral &>(*ast_with_name).value.get<const String &>();
ws.ignore(pos, end);
}
params.type = ASTAlterQuery::FREEZE_PARTITION;
}
else if (s_modify_column.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_col_decl.parse(pos, end, params.col_decl, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
params.type = ASTAlterQuery::MODIFY_COLUMN;
}
else if (s_modify_primary_key.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!ParserString("(").ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!ParserNotEmptyExpressionList(false).parse(pos, end, params.primary_key, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!ParserString(")").ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
params.type = ASTAlterQuery::MODIFY_PRIMARY_KEY;
}
else if (s_reshard.ignore(pos, end, max_parsed_pos, expected))
{
ParserList weighted_zookeeper_paths_p(std::make_unique<ParserWeightedZooKeeperPath>(), std::make_unique<ParserString>(","), false);
ParserExpressionWithOptionalAlias parser_sharding_key_expr(false);
ParserStringLiteral parser_coordinator;
ws.ignore(pos, end);
if (s_copy.ignore(pos, end, max_parsed_pos, expected))
params.do_copy = true;
ws.ignore(pos, end);
if (s_partition.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_uint.parse(pos, end, params.partition, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (s_doubledot.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!parser_uint.parse(pos, end, params.last_partition, max_parsed_pos, expected))
return false;
}
}
ws.ignore(pos, end);
if (!s_to.ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!weighted_zookeeper_paths_p.parse(pos, end, params.weighted_zookeeper_paths, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!s_using.ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!parser_sharding_key_expr.parse(pos, end, params.sharding_key_expr, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (s_coordinate.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
if (!s_with.ignore(pos, end, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
if (!parser_coordinator.parse(pos, end, params.coordinator, max_parsed_pos, expected))
return false;
ws.ignore(pos, end);
}
params.type = ASTAlterQuery::RESHARD_PARTITION;
}
else
return false;
ws.ignore(pos, end);
if (!s_comma.ignore(pos, end, max_parsed_pos, expected))
{
ws.ignore(pos, end);
parsing_finished = true;
}
query->addParameters(params);
}
while (!parsing_finished);
query->range = StringRange(begin, end);
query->cluster = cluster_str;
node = query;
return true;
}
