ex_expr::exp_return_type ExpLOBinsert::eval(char *op_data[],
CollHeap*h,
ComDiagsArea** diagsArea)
{
ex_expr::exp_return_type err;
err = insertDesc(op_data, h, diagsArea);
if (err == ex_expr::EXPR_ERROR)
return err;
#ifndef __EID
char * handle = op_data[0];
Lng32 handleLen = getOperand(0)->getLength();
err = insertData(handleLen, handle, op_data, h, diagsArea);
#endif
return err;
}
ex_expr::exp_return_type ExpLOBupdate::eval(char *op_data[],
CollHeap*h,
ComDiagsArea** diagsArea)
{
Lng32 rc;
Lng32 lobOperStatus = checkLobOperStatus();
if (lobOperStatus == DO_NOTHING_)
return ex_expr::EXPR_OK;
char * result = op_data[0];
char * lobHandle = NULL;
Lng32 handleLen = 0;
Lng32 sLobType;
Int64 sUid;
Lng32 sLobNum;
Int64 sDescSyskey = -1;
Int64 sDescTS = -1;
Int16 sFlags;
short sSchNameLen = 0;
char sSchName[500];
if (getOperand(2)->getNullFlag() &&
nullValue_)
{
ex_expr::exp_return_type err = insertDesc(op_data, h, diagsArea);
if (err == ex_expr::EXPR_ERROR)
return err;
char * handle = op_data[0];
handleLen = getOperand(0)->getLength();
err = insertData(handleLen, handle, op_data, h, diagsArea);
return err;
}
else
{
lobHandle = op_data[2];
handleLen = getOperand(2)->getLength(op_data[-MAX_OPERANDS+2]);
}
extractFromLOBhandle(&sFlags, &sLobType, &sLobNum, &sUid,
&sDescSyskey, &sDescTS,
&sSchNameLen, sSchName,
lobHandle); //op_data[2]);
// get the lob name where data need to be updated
char tgtLobNameBuf[100];
char * tgtLobName = ExpGetLOBname(sUid, sLobNum, tgtLobNameBuf, 100);
if (tgtLobName == NULL)
return ex_expr::EXPR_ERROR;
char fromLobNameBuf[100];
char * fromLobName = NULL;
Int64 fromDescKey = 0;
Int64 fromDescTS = 0;
short fromSchNameLen = 0;
char fromSchName[500];
if (0) // TBD. fromLob())
{
Lng32 fromLobType;
Int64 fromLobUid;
Lng32 fromLobNum;
Int16 fromFlags;
extractFromLOBhandle(&fromFlags, &fromLobType, &fromLobNum, &fromLobUid,
&fromDescKey, &fromDescTS,
&fromSchNameLen, fromSchName,
op_data[1]);
// get the lob name where data will be read from
fromLobName = ExpGetLOBname(fromLobUid, fromLobNum, fromLobNameBuf, 100);
if (fromLobName == NULL)
return ex_expr::EXPR_ERROR;
}
LobsSubOper so = Lob_None;
if (fromFile())
so = Lob_File;
else if (fromString())
so = Lob_Memory;
else if (fromLob())
so = Lob_Foreign_Lob;
else if (fromBuffer())
so= Lob_Buffer;
Lng32 waitedOp = 0;
#ifdef __EID
waitedOp = 0; // nowaited op from EID/TSE process
#else
waitedOp = 1;
#endif
//temptemp. Remove after ExLobsOper adds nowaited support.
waitedOp = 1;
Lng32 cliError = 0;
// call function with the lobname and source value
// to update it in the LOB.
// Get back offset and len of the LOB.
// Int64 offset = 0;
Int64 lobLen = getOperand(1)->getLength();
char * data = op_data[1];
if (fromBuffer())
{
memcpy(&lobLen, op_data[3],sizeof(Int64)); // user specified buffer length
memcpy(data,op_data[1],sizeof(Int64)); // user buffer address
}
if (isAppend())
{
rc = ExpLOBInterfaceUpdateAppend
(getExeGlobals()->lobGlobal(),
getLobHdfsServer(),
getLobHdfsPort(),
tgtLobName,
lobStorageLocation(),
handleLen, lobHandle,
&outHandleLen_, outLobHandle_,
requestTag_,
getExeGlobals()->lobGlobals()->xnId(),
(lobOperStatus == CHECK_STATUS_ ? 1 : 0),
waitedOp,
so,
sDescSyskey,
lobLen,
data,
fromLobName, fromSchNameLen, fromSchName,
fromDescKey, fromDescTS,
getLobMaxSize(), getLobMaxChunkMemSize(),getLobGCLimit());
}
else
{
rc = ExpLOBInterfaceUpdate
(getExeGlobals()->lobGlobal(),
getLobHdfsServer(),
getLobHdfsPort(),
tgtLobName,
lobStorageLocation(),
handleLen, lobHandle,
&outHandleLen_, outLobHandle_,
requestTag_,
getExeGlobals()->lobGlobals()->xnId(),
(lobOperStatus == CHECK_STATUS_ ? 1 : 0),
waitedOp,
so,
sDescSyskey,
lobLen,
data,
fromLobName, fromSchNameLen, fromSchName,
fromDescKey, fromDescTS,
getLobMaxSize(), getLobMaxChunkMemSize(),getLobGCLimit());
}
if (rc < 0)
{
Lng32 intParam1 = -rc;
ExRaiseSqlError(h, diagsArea,
(ExeErrorCode)(8442), NULL, &intParam1,
&cliError, NULL, (char*)"ExpLOBInterfaceUpdate",
getLobErrStr(intParam1));
return ex_expr::EXPR_ERROR;
}
// update lob handle with the returned values
str_cpy_all(result, lobHandle, handleLen);
// str_cpy_all(result, op_data[2], handleLen);
// ExpLOBoper::updLOBhandle(sDescSyskey, 0, result);
getOperand(0)->setVarLength(handleLen, op_data[-MAX_OPERANDS]);
return ex_expr::EXPR_OK;
}
