ShowCreateServerCommand Class Reference

#include <DdlCommandExecutor.h>

Inheritance diagram for ShowCreateServerCommand:

Collaboration diagram for ShowCreateServerCommand:

Public Member Functions
	ShowCreateServerCommand (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)

Private Attributes
std::string	server_

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 188 of file DdlCommandExecutor.h.

Constructor & Destructor Documentation

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

Definition at line 2612 of file DdlCommandExecutor.cpp.

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

    : DdlCommand(ddl_data, session_ptr) {
  if (!g_enable_fsi) {
    throw std::runtime_error("Unsupported command: SHOW CREATE SERVER");
  }
  // Verify that members are valid
  auto& payload = extractPayload(ddl_data_);
  CHECK(payload.HasMember("serverName"));
  CHECK(payload["serverName"].IsString());
  server_ = (payload["serverName"].GetString());
}

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Member Function Documentation

ExecutionResult ShowCreateServerCommand::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 2626 of file DdlCommandExecutor.cpp.

References ResultSetLogicalValuesBuilder::create(), genLiteralStr(), legacylockmgr::getExecuteReadLock(), lockmgr::instance(), kTEXT, DBObject::loadKey(), server_, ServerDBObjectType, and DdlCommand::session_ptr_.

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

                                                                    {
  auto execute_read_lock = legacylockmgr::getExecuteReadLock();
  // valid in read_only_mode

  using namespace Catalog_Namespace;
  auto& catalog = session_ptr_->getCatalog();
  const auto server = catalog.getForeignServer(server_);
  if (!server) {
    throw std::runtime_error("Foreign server " + server_ + " does not exist.");
  }
  DBObject dbObject(server_, ServerDBObjectType);
  dbObject.loadKey(catalog);
  std::vector<DBObject> privObjects = {dbObject};
  if (!SysCatalog::instance().hasAnyPrivileges(session_ptr_->get_currentUser(),
                                               privObjects)) {
    throw std::runtime_error("Foreign server " + server_ + " does not exist.");
  }
  auto create_stmt = catalog.dumpCreateServer(server_);

  std::vector<std::string> labels{"create_server_sql"};
  std::vector<TargetMetaInfo> label_infos;
  label_infos.emplace_back(labels[0], SQLTypeInfo(kTEXT, true));

  std::vector<RelLogicalValues::RowValues> logical_values;
  logical_values.emplace_back(RelLogicalValues::RowValues{});
  logical_values.back().emplace_back(genLiteralStr(create_stmt));

  std::shared_ptr<ResultSet> rSet = std::shared_ptr<ResultSet>(
      ResultSetLogicalValuesBuilder::create(label_infos, logical_values));

  return ExecutionResult(rSet, label_infos);
}

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Member Data Documentation

std::string ShowCreateServerCommand::server_

private

Definition at line 197 of file DdlCommandExecutor.h.

Referenced by execute(), and ShowCreateServerCommand().

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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