/**
* @brief Basic initialization.
* @return true on success, false otherwise.
*/
bool CopyExecutor::DInit() {
PELOTON_ASSERT(children_.size() == 1);
// Grab info from plan node and check it
const planner::CopyPlan &node = GetPlanNode<planner::CopyPlan>();
bool success = InitFileHandle(node.file_path.c_str(), "w");
if (success == false) {
throw ExecutorException("Failed to create file " + node.file_path +
". Try absolute path and make sure you have the "
"permission to access this file.");
return false;
}
LOG_DEBUG("Created target copy output file: %s", node.file_path.c_str());
// Whether we're copying the parameters which require deserialization
if (node.deserialize_parameters) {
InitParamColIds();
}
return true;
}
//-----------------------------------------------------------------------------------------------
// Close
//
// Closes the filehandle and takes care of flushing pages to the disk.
//-----------------------------------------------------------------------------------------------
t_rc STORM_FileHandle::Close()
{
t_rc rc;
// Check if file is not opened.
if (!m_isOpened)
return (STORM_FILEALREADYCLOSED);
// Otherwise close the file and return OK.
// Let the buffer manager deallocate space reserved for the file.
rc = m_pBfrMgr->ReleaseFileFrames(m_fileID, true);
if (rc != OK) return (rc);
// Close the file (OS)
int r;
r = close(m_fileID);
if (r) return (STORM_FILECLOSEERROR);
// Initialize the file handle variables.
InitFileHandle();
return (OK);
}
//-----------------------------------------------------------------------------------------------
// Constructor
//
//
//-----------------------------------------------------------------------------------------------
STORM_FileHandle::STORM_FileHandle()
{
InitFileHandle();
}