C++ (Cpp) CFileReader::Open Examples

Example #1

File: funcs.cpp Project: b-xiang/gpdb

Datum
RestorePlanFromDXLFile(PG_FUNCTION_ARGS)
{
	char *szFilename = textToString(PG_GETARG_TEXT_P(0));

	CFileReader fr;
	fr.Open(szFilename);
	ULLONG ullSize = fr.UllSize();

	char *pcBuf = (char*) gpdb::GPDBAlloc(ullSize + 1);
	fr.UlpRead((BYTE*)pcBuf, ullSize);
	pcBuf[ullSize] = '\0';

	fr.Close();

	int	iProcessed = executeXMLPlan(pcBuf);

	elog(NOTICE, "Processed %d rows.", iProcessed);
	gpdb::GPDBFree(pcBuf);

	StringInfoData str;
	initStringInfo(&str);

	appendStringInfo(&str, "Query processed %d rows", iProcessed);
	text *ptResult = stringToText(str.data);

	PG_RETURN_TEXT_P(ptResult);
}

Example #2

File: funcs.cpp Project: b-xiang/gpdb

Datum
EvalExprFromDXLFile(PG_FUNCTION_ARGS)
{
	char *szFileName = textToString(PG_GETARG_TEXT_P(0));
	CFileReader fr;
	fr.Open(szFileName);
	ULLONG ullSize = fr.UllSize();
	char *pcBuf = (char*) gpdb::GPDBAlloc(ullSize + 1);
	fr.UlpRead((BYTE*)pcBuf, ullSize);
	fr.Close();
	pcBuf[ullSize] = '\0';

	char *szResultDXL = COptTasks::SzEvalExprFromXML(pcBuf);
	gpdb::GPDBFree(pcBuf);

	if (NULL != szResultDXL)
	{
		text *ptResult = stringToText(szResultDXL);
		gpdb::GPDBFree(szResultDXL);
		PG_RETURN_TEXT_P(ptResult);
	}
	else
	{
		// Return a dummy value so the tests can continue
		PG_RETURN_NULL();
	}
}

Example #3

File: funcs.cpp Project: b-xiang/gpdb

Datum
RestorePlanFromFile(PG_FUNCTION_ARGS)
{
	char *szFilename = textToString(PG_GETARG_TEXT_P(0));

	CFileReader fr;
	fr.Open(szFilename);
	ULLONG ullSize = fr.UllSize();

	char *pcBuf = (char*) gpdb::GPDBAlloc(ullSize);
	fr.UlpRead((BYTE*)pcBuf, ullSize);
	fr.Close();

	int iBinaryLen;
	memcpy(&iBinaryLen, pcBuf, sizeof(int));
	Assert(iBinaryLen == ullSize - sizeof(int));

	char *pcBinary = pcBuf + sizeof(int);

	int	iProcessed = extractFrozenPlanAndExecute(pcBinary);

	elog(NOTICE, "Processed %d rows.", iProcessed);
	gpdb::GPDBFree(pcBuf);

	StringInfoData str;
	initStringInfo(&str);

	appendStringInfo(&str, "Query processed %d rows", iProcessed);
	text *ptResult = stringToText(str.data);

	PG_RETURN_TEXT_P(ptResult);
}

Example #4

File: orca_debug.cpp Project: d/gpdb

Datum
RestoreQueryFromFile(PG_FUNCTION_ARGS)
{
	char *szFilename = text_to_cstring(PG_GETARG_TEXT_P(0));

	CFileReader fr;
	fr.Open(szFilename);
	ULLONG ullSize = fr.UllSize();
	elog(NOTICE, "(RestoreFromFile) Filesize is " UINT64_FORMAT, (uint64) ullSize);

	char *pcBuf = (char*) gpdb::GPDBAlloc(ullSize);
	fr.UlpRead((BYTE*)pcBuf, ullSize);
	fr.Close();

	int iBinaryLen;
	memcpy(&iBinaryLen, pcBuf, sizeof(int));
	Assert(iBinaryLen == ullSize - sizeof(int));

	elog(NOTICE, "(RestoreFromFile) BinaryLen is %d", iBinaryLen);
	char *pcBinary = pcBuf + sizeof(int);

	int iProcessed = extractFrozenQueryPlanAndExecute(pcBinary);

	elog(NOTICE, "(RestorePlan) PROCESSED %d", iProcessed);
	StringInfoData str;
	initStringInfo(&str);

	appendStringInfo(&str, "Query processed %d rows", iProcessed);
	text *ptResult = cstring_to_text(str.data);

	PG_RETURN_TEXT_P(ptResult);
}

Example #5

File: funcs.cpp Project: PivotalBigData/incubator-hawq

char *read_file(const char *szFilename)
{
	CFileReader fr;
	fr.Open(szFilename);
	ULLONG ullSize = fr.UllSize();

	char *pcBuf = (char*) gpdb::GPDBAlloc(ullSize);
	fr.UlpRead((BYTE*)pcBuf, ullSize);
	pcBuf[ullSize] = '\0';
	
	fr.Close();
	return pcBuf;
}

Example #6

File: funcs.cpp Project: b-xiang/gpdb

Datum
DumpQueryFromFileToDXLFile(PG_FUNCTION_ARGS)
{
	char *szSqlFilename = textToString(PG_GETARG_TEXT_P(0));
	char *szFilename = textToString(PG_GETARG_TEXT_P(1));

	CFileReader fr;
	fr.Open(szSqlFilename);
	ULLONG ullSize = fr.UllSize();

	char *pcBuf = (char*) gpdb::GPDBAlloc(ullSize + 1);
	fr.UlpRead((BYTE*)pcBuf, ullSize);
	pcBuf[ullSize] = '\0';
	fr.Close();

	int iLen = translateQueryToFile(pcBuf, szFilename);

	gpdb::GPDBFree(pcBuf);

	PG_RETURN_INT32(iLen);
}

Example #7

File: COstreamFileTest.cpp Project: MoZhonghua/gporca

//---------------------------------------------------------------------------
//	@function:
//		COstreamFileTest::Unittest_CheckOutputFile
//
//	@doc:
//		Check the contents of the file used by the output stream
//
//---------------------------------------------------------------------------
void
COstreamFileTest::Unittest_CheckOutputFile
	(
	const CHAR *szFile
	)
{
	GPOS_ASSERT(NULL != szFile);

	CFileReader fr;
	fr.Open(szFile);

	const ULONG ulReadBufferSize = 1024;
	WCHAR wszReadBuffer[ulReadBufferSize];

#ifdef GPOS_DEBUG
	ULONG_PTR ulpRead =
#endif // GPOS_DEBUG
	fr.UlpRead((BYTE *) wszReadBuffer, GPOS_ARRAY_SIZE(wszReadBuffer));

	CWStringConst strExpected(GPOS_WSZ_LIT("WC102-10some regular stringdeadbeef"));

	GPOS_ASSERT(ulpRead == (ULONG_PTR) strExpected.UlLength() * GPOS_SIZEOF(WCHAR));
	GPOS_ASSERT(strExpected.FEquals(&strExpected));
}