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Parser::TruncateTableStmt Class Reference

#include <ParserNode.h>

+ Inheritance diagram for Parser::TruncateTableStmt:
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Public Member Functions

 TruncateTableStmt (std::string *tab)
 
 TruncateTableStmt (const rapidjson::Value &payload)
 
const std::string * get_table () const
 
void execute (const Catalog_Namespace::SessionInfo &session, bool read_only_mode) override
 
- Public Member Functions inherited from Parser::DDLStmt
void setColumnDescriptor (ColumnDescriptor &cd, const ColumnDef *coldef)
 
- Public Member Functions inherited from Parser::Node
virtual ~Node ()
 

Private Attributes

std::unique_ptr< std::string > table_
 

Detailed Description

Definition at line 1240 of file ParserNode.h.

Constructor & Destructor Documentation

Parser::TruncateTableStmt::TruncateTableStmt ( std::string *  tab)
inline

Definition at line 1242 of file ParserNode.h.

1242 : table_(tab) {}
std::unique_ptr< std::string > table_
Definition: ParserNode.h:1249
Parser::TruncateTableStmt::TruncateTableStmt ( const rapidjson::Value &  payload)

Definition at line 4521 of file ParserNode.cpp.

References CHECK, json_str(), and table_.

4521  {
4522  CHECK(payload.HasMember("tableName"));
4523  table_ = std::make_unique<std::string>(json_str(payload["tableName"]));
4524 }
std::unique_ptr< std::string > table_
Definition: ParserNode.h:1249
const std::string json_str(const rapidjson::Value &obj) noexcept
Definition: JsonAccessors.h:44
#define CHECK(condition)
Definition: Logger.h:222

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Member Function Documentation

void Parser::TruncateTableStmt::execute ( const Catalog_Namespace::SessionInfo session,
bool  read_only_mode 
)
overridevirtual

Implements Parser::DDLStmt.

Definition at line 4526 of file ParserNode.cpp.

References Executor::clearExternalCaches(), legacylockmgr::ExecutorOuterLock, Catalog_Namespace::SessionInfo::get_currentUser(), Catalog_Namespace::SessionInfo::getCatalog(), legacylockmgr::LockMgr< MutexType, KeyType >::getMutex(), lockmgr::TableLockMgrImpl< TableDataLockMgr >::getReadLockForTable(), lockmgr::TableLockMgrImpl< TableDataLockMgr >::getWriteLockForTable(), TableDescriptor::isView, DBObject::loadKey(), DBObject::setPrivileges(), table_, TableDBObjectType, AccessPrivileges::TRUNCATE_TABLE, Catalog_Namespace::UserMetadata::userLoggable(), and foreign_storage::validate_non_foreign_table_write().

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

4527  {
4528  if (read_only_mode) {
4529  throw std::runtime_error("TRUNCATE TABLE invalid in read only mode.");
4530  }
4531  const auto execute_read_lock =
4535  auto& catalog = session.getCatalog();
4536  const auto td_with_lock =
4538  catalog, *table_, true);
4539  const auto td = td_with_lock();
4540  if (!td) {
4541  throw std::runtime_error("Table " + *table_ + " does not exist.");
4542  }
4543 
4544  // check access privileges
4545  std::vector<DBObject> privObjects;
4546  DBObject dbObject(*table_, TableDBObjectType);
4547  dbObject.loadKey(catalog);
4548  dbObject.setPrivileges(AccessPrivileges::TRUNCATE_TABLE);
4549  privObjects.push_back(dbObject);
4550  if (!SysCatalog::instance().checkPrivileges(session.get_currentUser(), privObjects)) {
4551  throw std::runtime_error("Table " + *table_ + " will not be truncated. User " +
4552  session.get_currentUser().userLoggable() +
4553  " has no proper privileges.");
4554  }
4555 
4556  if (td->isView) {
4557  throw std::runtime_error(*table_ + " is a view. Cannot Truncate.");
4558  }
4560 
4561  // invalidate cached item
4562  {
4563  auto table_data_read_lock =
4565  Executor::clearExternalCaches(false, td, catalog.getCurrentDB().dbId);
4566  }
4567 
4568  auto table_data_write_lock =
4570  catalog.truncateTable(td);
4571 }
static std::shared_ptr< WrapperType< MutexType > > getMutex(const LockType lockType, const KeyType &key)
void validate_non_foreign_table_write(const TableDescriptor *table_descriptor)
Definition: FsiUtils.h:22
static WriteLock getWriteLockForTable(Catalog_Namespace::Catalog &cat, const std::string &table_name)
Definition: LockMgrImpl.h:225
static const AccessPrivileges TRUNCATE_TABLE
Definition: DBObject.h:164
std::unique_ptr< std::string > table_
Definition: ParserNode.h:1249
std::shared_lock< T > shared_lock
Catalog & getCatalog() const
Definition: SessionInfo.h:65
static ReadLock getReadLockForTable(Catalog_Namespace::Catalog &cat, const std::string &table_name)
Definition: LockMgrImpl.h:243
static void clearExternalCaches(bool for_update, const TableDescriptor *td, const int current_db_id)
Definition: Execute.h:391
std::string userLoggable() const
Definition: SysCatalog.cpp:127
const UserMetadata & get_currentUser() const
Definition: SessionInfo.h:71

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const std::string* Parser::TruncateTableStmt::get_table ( ) const
inline

Definition at line 1244 of file ParserNode.h.

References table_.

1244 { return table_.get(); }
std::unique_ptr< std::string > table_
Definition: ParserNode.h:1249

Member Data Documentation

std::unique_ptr<std::string> Parser::TruncateTableStmt::table_
private

Definition at line 1249 of file ParserNode.h.

Referenced by execute(), get_table(), and TruncateTableStmt().


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