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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 1227 of file ParserNode.h.

Constructor & Destructor Documentation

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

Definition at line 1229 of file ParserNode.h.

1229 : table_(tab) {}
std::unique_ptr< std::string > table_
Definition: ParserNode.h:1236
Parser::TruncateTableStmt::TruncateTableStmt ( const rapidjson::Value &  payload)

Definition at line 4928 of file ParserNode.cpp.

References CHECK, json_str(), and table_.

4928  {
4929  CHECK(payload.HasMember("tableName"));
4930  table_ = std::make_unique<std::string>(json_str(payload["tableName"]));
4931 }
std::unique_ptr< std::string > table_
Definition: ParserNode.h:1236
const std::string json_str(const rapidjson::Value &obj) noexcept
Definition: JsonAccessors.h:46
#define CHECK(condition)
Definition: Logger.h:291

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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 4933 of file ParserNode.cpp.

References Executor::clearExternalCaches(), Catalog_Namespace::SessionInfo::get_currentUser(), Catalog_Namespace::SessionInfo::getCatalog(), legacylockmgr::getExecuteReadLock(), 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().

4934  {
4935  if (read_only_mode) {
4936  throw std::runtime_error("TRUNCATE TABLE invalid in read only mode.");
4937  }
4938  const auto execute_read_lock = legacylockmgr::getExecuteReadLock();
4939  auto& catalog = session.getCatalog();
4940  const auto td_with_lock =
4942  catalog, *table_, true);
4943  const auto td = td_with_lock();
4944  if (!td) {
4945  throw std::runtime_error("Table " + *table_ + " does not exist.");
4946  }
4947 
4948  // check access privileges
4949  std::vector<DBObject> privObjects;
4950  DBObject dbObject(*table_, TableDBObjectType);
4951  dbObject.loadKey(catalog);
4952  dbObject.setPrivileges(AccessPrivileges::TRUNCATE_TABLE);
4953  privObjects.push_back(dbObject);
4954  if (!SysCatalog::instance().checkPrivileges(session.get_currentUser(), privObjects)) {
4955  throw std::runtime_error("Table " + *table_ + " will not be truncated. User " +
4956  session.get_currentUser().userLoggable() +
4957  " has no proper privileges.");
4958  }
4959 
4960  if (td->isView) {
4961  throw std::runtime_error(*table_ + " is a view. Cannot Truncate.");
4962  }
4964 
4965  // invalidate cached item
4966  {
4967  auto table_data_read_lock =
4969  Executor::clearExternalCaches(false, td, catalog.getCurrentDB().dbId);
4970  }
4971 
4972  auto table_data_write_lock =
4974  catalog.truncateTable(td);
4975 }
void validate_non_foreign_table_write(const TableDescriptor *table_descriptor)
Definition: FsiUtils.h:22
auto getExecuteReadLock()
static const AccessPrivileges TRUNCATE_TABLE
Definition: DBObject.h:164
std::unique_ptr< std::string > table_
Definition: ParserNode.h:1236
static WriteLock getWriteLockForTable(const Catalog_Namespace::Catalog &cat, const std::string &table_name)
Definition: LockMgrImpl.h:225
Catalog & getCatalog() const
Definition: SessionInfo.h:75
static ReadLock getReadLockForTable(Catalog_Namespace::Catalog &cat, const std::string &table_name)
Definition: LockMgrImpl.h:238
static void clearExternalCaches(bool for_update, const TableDescriptor *td, const int current_db_id)
Definition: Execute.h:438
std::string userLoggable() const
Definition: SysCatalog.cpp:158
const UserMetadata & get_currentUser() const
Definition: SessionInfo.h:88

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

Definition at line 1231 of file ParserNode.h.

References table_.

1231 { return table_.get(); }
std::unique_ptr< std::string > table_
Definition: ParserNode.h:1236

Member Data Documentation

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

Definition at line 1236 of file ParserNode.h.

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


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