DropForeignServerCommand Class Reference

#include <DdlCommandExecutor.h>

Inheritance diagram for DropForeignServerCommand:

Collaboration diagram for DropForeignServerCommand:

Public Member Functions
	DropForeignServerCommand (const DdlCommandData &ddl_data, std::shared_ptr< Catalog_Namespace::SessionInfo const > session_ptr)
ExecutionResult	execute (bool read_only_mode) override
Public Member Functions inherited from DdlCommand
	DdlCommand (const DdlCommandData &ddl_data, std::shared_ptr< Catalog_Namespace::SessionInfo const > session_ptr)

Additional Inherited Members
Protected Attributes inherited from DdlCommand
const DdlCommandData &	ddl_data_
std::shared_ptr < Catalog_Namespace::SessionInfo const >	session_ptr_

Detailed Description

Definition at line 82 of file DdlCommandExecutor.h.

Constructor & Destructor Documentation

DropForeignServerCommand::DropForeignServerCommand	(	const DdlCommandData &	ddl_data,
		std::shared_ptr< Catalog_Namespace::SessionInfo const >	session_ptr
	)

Definition at line 1174 of file DdlCommandExecutor.cpp.

References CHECK, DdlCommand::ddl_data_, anonymous_namespace{DdlCommandExecutor.cpp}::extractPayload(), and g_enable_fsi.

    : DdlCommand(ddl_data, session_ptr) {
  if (!g_enable_fsi) {
    throw std::runtime_error("Unsupported command: DROP FOREIGN SERVER");
  }
  auto& ddl_payload = extractPayload(ddl_data_);
  CHECK(ddl_payload.HasMember("serverName"));
  CHECK(ddl_payload["serverName"].IsString());
  CHECK(ddl_payload.HasMember("ifExists"));
  CHECK(ddl_payload["ifExists"].IsBool());
}

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Member Function Documentation

ExecutionResult DropForeignServerCommand::execute ( bool  read_only_mode )

overridevirtual

Executes the DDL command corresponding to provided JSON payload.

Parameters

_return

result of DDL command execution (if applicable)

Implements DdlCommand.

Definition at line 1188 of file DdlCommandExecutor.cpp.

References DdlCommand::ddl_data_, AccessPrivileges::DROP_SERVER, anonymous_namespace{DdlCommandExecutor.cpp}::extractPayload(), legacylockmgr::getExecuteWriteLock(), Catalog_Namespace::SysCatalog::instance(), anonymous_namespace{DdlCommandExecutor.cpp}::is_default_server(), Catalog_Namespace::SysCatalog::revokeDBObjectPrivilegesFromAll(), ServerDBObjectType, and DdlCommand::session_ptr_.

Referenced by heavydb.cursor.Cursor::executemany().

                                                                     {
  auto execute_write_lock = legacylockmgr::getExecuteWriteLock();

  if (read_only_mode) {
    throw std::runtime_error("DROP FOREIGN SERVER invalid in read only mode.");
  }

  auto& ddl_payload = extractPayload(ddl_data_);
  std::string server_name = ddl_payload["serverName"].GetString();
  if (is_default_server(server_name)) {
    throw std::runtime_error{"Default servers cannot be dropped."};
  }
  bool if_exists = ddl_payload["ifExists"].GetBool();
  if (!session_ptr_->getCatalog().getForeignServer(server_name)) {
    if (if_exists) {
      return ExecutionResult();
    } else {
      throw std::runtime_error{"Foreign server with name \"" + server_name +
                               "\" can not be dropped. Server does not exist."};
    }
  }
  // check access privileges
  if (!session_ptr_->checkDBAccessPrivileges(
          DBObjectType::ServerDBObjectType, AccessPrivileges::DROP_SERVER, server_name)) {
    throw std::runtime_error("Server " + server_name +
                             " will not be dropped. User has no DROP SERVER privileges.");
  }
  Catalog_Namespace::SysCatalog::instance().revokeDBObjectPrivilegesFromAll(
      DBObject(server_name, ServerDBObjectType), session_ptr_->get_catalog_ptr().get());
  session_ptr_->getCatalog().dropForeignServer(ddl_payload["serverName"].GetString());

  return ExecutionResult();
}

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The documentation for this class was generated from the following files:

• /home/jenkins-slave/workspace/core-os-doxygen/Catalog/DdlCommandExecutor.h
• /home/jenkins-slave/workspace/core-os-doxygen/Catalog/DdlCommandExecutor.cpp