Parser::TruncateTableStmt Class Reference

#include <ParserNode.h>

Inheritance diagram for Parser::TruncateTableStmt:

Collaboration diagram for Parser::TruncateTableStmt:

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.

: table_(tab) {}

Parser::TruncateTableStmt::TruncateTableStmt

(

const rapidjson::Value &

payload

)

Definition at line 4949 of file ParserNode.cpp.

References CHECK, json_str(), and table_.

                                                                  {
  CHECK(payload.HasMember("tableName"));
  table_ = std::make_unique<std::string>(json_str(payload["tableName"]));
}

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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 4954 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(), lockmgr::instance(), 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().

                                                     {
  if (read_only_mode) {
    throw std::runtime_error("TRUNCATE TABLE invalid in read only mode.");
  }
  const auto execute_read_lock = legacylockmgr::getExecuteReadLock();
  auto& catalog = session.getCatalog();
  const auto td_with_lock =
      lockmgr::TableSchemaLockContainer<lockmgr::WriteLock>::acquireTableDescriptor(
          catalog, *table_, true);
  const auto td = td_with_lock();
  if (!td) {
    throw std::runtime_error("Table " + *table_ + " does not exist.");
  }

  // check access privileges
  std::vector<DBObject> privObjects;
  DBObject dbObject(*table_, TableDBObjectType);
  dbObject.loadKey(catalog);
  dbObject.setPrivileges(AccessPrivileges::TRUNCATE_TABLE);
  privObjects.push_back(dbObject);
  if (!SysCatalog::instance().checkPrivileges(session.get_currentUser(), privObjects)) {
    throw std::runtime_error("Table " + *table_ + " will not be truncated. User " +
                             session.get_currentUser().userLoggable() +
                             " has no proper privileges.");
  }

  if (td->isView) {
    throw std::runtime_error(*table_ + " is a view.  Cannot Truncate.");
  }
  foreign_storage::validate_non_foreign_table_write(td);

  // invalidate cached item
  {
    auto table_data_read_lock =
        lockmgr::TableDataLockMgr::getReadLockForTable(catalog, *table_);
    Executor::clearExternalCaches(false, td, catalog.getCurrentDB().dbId);
  }

  auto table_data_write_lock =
      lockmgr::TableDataLockMgr::getWriteLockForTable(catalog, *table_);
  catalog.truncateTable(td);
}

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

inline

Definition at line 1231 of file ParserNode.h.

References table_.

{ return table_.get(); }

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().

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

• /home/jenkins-slave/workspace/core-os-doxygen/Parser/ParserNode.h
• /home/jenkins-slave/workspace/core-os-doxygen/Parser/ParserNode.cpp