Parser::DropViewStmt Class Reference

#include <ParserNode.h>

Inheritance diagram for Parser::DropViewStmt:

Collaboration diagram for Parser::DropViewStmt:

Public Member Functions
	DropViewStmt (std::string *v, bool i)
	DropViewStmt (const rapidjson::Value &payload)
const std::string *	get_view_name () 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 >	view_name_
bool	if_exists_

Detailed Description

Definition at line 1909 of file ParserNode.h.

Constructor & Destructor Documentation

Parser::DropViewStmt::DropViewStmt ( std::string *  v, bool  i  )

inline

Definition at line 1911 of file ParserNode.h.

: view_name_(v), if_exists_(i) {}

Parser::DropViewStmt::DropViewStmt

(

const rapidjson::Value &

payload

)

Definition at line 6485 of file ParserNode.cpp.

References CHECK, if_exists_, json_bool(), json_str(), and view_name_.

                                                        {
  CHECK(payload.HasMember("viewName"));
  view_name_ = std::make_unique<std::string>(json_str(payload["viewName"]));

  if_exists_ = false;
  if (payload.HasMember("ifExists")) {
    if_exists_ = json_bool(payload["ifExists"]);
  }
}

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Member Function Documentation

void Parser::DropViewStmt::execute ( const Catalog_Namespace::SessionInfo &  session, bool  read_only_mode  )

overridevirtual

Implements Parser::DDLStmt.

Definition at line 6495 of file ParserNode.cpp.

References CHECK, Catalog_Namespace::SessionInfo::checkDBAccessPrivileges(), AccessPrivileges::DROP_VIEW, legacylockmgr::ExecutorOuterLock, Catalog_Namespace::SessionInfo::getCatalog(), legacylockmgr::LockMgr< MutexType, KeyType >::getMutex(), if_exists_, ddl_utils::validate_table_type(), ddl_utils::VIEW, view_name_, and ViewDBObjectType.

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

                                                {
  if (read_only_mode) {
    throw std::runtime_error("DROP VIEW invalid in read only mode.");
  }
  auto& catalog = session.getCatalog();

  const auto execute_read_lock =
      heavyai::shared_lock<legacylockmgr::WrapperType<heavyai::shared_mutex>>(
          *legacylockmgr::LockMgr<heavyai::shared_mutex, bool>::getMutex(
              legacylockmgr::ExecutorOuterLock, true));

  const TableDescriptor* td{nullptr};
  std::unique_ptr<lockmgr::TableSchemaLockContainer<lockmgr::WriteLock>> td_with_lock;

  try {
    td_with_lock =
        std::make_unique<lockmgr::TableSchemaLockContainer<lockmgr::WriteLock>>(
            lockmgr::TableSchemaLockContainer<lockmgr::WriteLock>::acquireTableDescriptor(
                catalog, *view_name_, false));
    td = (*td_with_lock)();
  } catch (const std::runtime_error& e) {
    if (if_exists_) {
      return;
    } else {
      throw e;
    }
  }

  CHECK(td);
  CHECK(td_with_lock);

  if (!session.checkDBAccessPrivileges(
          DBObjectType::ViewDBObjectType, AccessPrivileges::DROP_VIEW, *view_name_)) {
    throw std::runtime_error("View " + *view_name_ +
                             " will not be dropped. User has no drop view privileges.");
  }

  ddl_utils::validate_table_type(td, ddl_utils::TableType::VIEW, "DROP");
  catalog.dropTable(td);
}

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const std::string* Parser::DropViewStmt::get_view_name ( ) const

inline

Definition at line 1914 of file ParserNode.h.

References view_name_.

{ return view_name_.get(); }

Member Data Documentation

bool Parser::DropViewStmt::if_exists_

private

Definition at line 1920 of file ParserNode.h.

Referenced by DropViewStmt(), and execute().

std::unique_ptr<std::string> Parser::DropViewStmt::view_name_

private

Definition at line 1919 of file ParserNode.h.

Referenced by DropViewStmt(), execute(), and get_view_name().

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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