INT32 rtnCoordQuery::execute( CHAR *pReceiveBuffer, SINT32 packSize,
CHAR **ppResultBuffer, pmdEDUCB *cb,
MsgOpReply &replyHeader,
BSONObj **ppErrorObj )
{
INT32 rc = SDB_OK ;
pmdKRCB *pKrcb = pmdGetKRCB();
CoordCB *pCoordcb = pKrcb->getCoordCB();
netMultiRouteAgent *pRouteAgent = pCoordcb->getRouteAgent();
rtnContextCoord *pContext = NULL ;
BSONObj boQuery;
BSONObj boOrderBy;
CoordGroupList sendGroupList ;
MsgHeader*pHeader = (MsgHeader *)pReceiveBuffer;
replyHeader.header.messageLength = sizeof( MsgOpReply );
replyHeader.header.opCode = MSG_BS_QUERY_RES;
replyHeader.header.requestID = pHeader->requestID;
replyHeader.header.routeID.value = 0;
replyHeader.header.TID = pHeader->TID;
replyHeader.contextID = -1;
replyHeader.flags = SDB_OK;
replyHeader.numReturned = 0;
replyHeader.startFrom = 0;
INT32 flag = 0;
CHAR *pCollectionName = NULL;
SINT64 numToSkip = 0;
SINT64 numToReturn = 0;
CHAR *pQuery = NULL;
CHAR *pFieldSelector = NULL;
CHAR *pOrderBy = NULL;
CHAR *pHint = NULL;
BSONObj *err = NULL ;
MsgOpQuery *pSrc = (MsgOpQuery *)pReceiveBuffer;
rc = msgExtractQuery( pReceiveBuffer, &flag, &pCollectionName,
&numToSkip, &numToReturn, &pQuery,
&pFieldSelector, &pOrderBy, &pHint );
PD_RC_CHECK( rc, PDERROR,
"failed to parse query request(rc=%d)", rc );
if ( pCollectionName != NULL && '$' == pCollectionName[0] )
{
rtnCoordCommand *pCmdProcesser = NULL;
rtnCoordProcesserFactory *pProcesserFactory
= pCoordcb->getProcesserFactory();
pCmdProcesser = pProcesserFactory->getCommandProcesser(
pCollectionName );
PD_CHECK( pCmdProcesser != NULL, SDB_INVALIDARG, error, PDERROR,
"unknown command:%s", pCollectionName );
rc = pCmdProcesser->execute( pReceiveBuffer, packSize,
ppResultBuffer, cb, replyHeader,
&err );
SDB_ASSERT( NULL == err, "impossible" );
PD_RC_CHECK( rc, PDERROR, "failed to execute the command(command:%s, "
"rc=%d)", pCollectionName, rc );
goto done;
}
try
{
boQuery = BSONObj( pQuery );
boOrderBy = BSONObj( pOrderBy );
}
catch ( std::exception &e )
{
PD_RC_CHECK( SDB_INVALIDARG, PDERROR,
"occur unexpected error:%s",
e.what() );
}
rc = executeQuery( (CHAR *)pSrc, boQuery, boOrderBy, pCollectionName,
pRouteAgent, cb, pContext ) ;
PD_RC_CHECK( rc, PDERROR, "query failed(rc=%d)", rc );
replyHeader.contextID = pContext->contextID() ;
pContext->addSubDone( cb );
done:
return rc;
error:
replyHeader.flags = rc;
goto done;
}
