int OneSideHashJoin::getRow(PosVal **pv_, unsigned int pvNum_){
int returnCode;
//ONESIDE_HASH_NODE *hnp;
unsigned int hashkey;
if(getRowFlag == 0){
while(1){
returnCode = outerOpeNode->getRow(&pv[innerAttriNum], outerAttriNum);
if(returnCode != 0){
delHash();
getRowFlag = -1;
return -1;
}else{
hashkey = 0;
for(unsigned int i = 0; i < nodeNum; i++)
hashkey += hashFunc(pv[outerPos[i]]);
hashkey = hashkey%HASH_SIZE;
innerHash->ScanNode->setHashkey(hashkey);
getRowFlag = 1;
break;
}
}
}
if(getRowFlag == -1){
return -1;
}
while(1){
returnCode = innerHash->ScanNode->getRow(pv, innerAttriNum);
if(returnCode == 0){
unsigned int posIndex;
for(posIndex = 0; posIndex < nodeNum; posIndex++){
if(!(*pv[innerPos[posIndex]] == pv[outerPos[posIndex]]))
break;
}
if(posIndex == nodeNum){
for(unsigned int i = 0; i < attriNum; i++) *pv_[i] = *pv[i];
return 0;
}
continue;
}
returnCode = outerOpeNode->getRow(&pv[innerAttriNum], outerAttriNum);
if(returnCode != 0){
getRowFlag = -1;
delHash();
return -1;
}else{
hashkey = 0;
for(unsigned int i = 0; i < nodeNum; i++)
hashkey += hashFunc(pv[outerPos[i]]);
hashkey %= HASH_SIZE;
innerHash->ScanNode->setHashkey(hashkey);
}
}
}
int main()
{
FILE *file;
file = fopen("txt.txt", "r");
while(!feof(file))
{
char string[12];
fscanf(file, "%s", string);
addHash(string);
}
printHash();
delHash();
std :: cin.get();
return 0;
}
