FunctionColumn::FunctionColumn( const FunctionColumn& rhs, const uint32_t sessionID):
ReturnedColumn(rhs, sessionID),
fFunctionName(rhs.functionName()),
fTableAlias (rhs.tableAlias()),
fData (rhs.data()),
fFunctor(rhs.fFunctor)
{
fFunctionParms.clear();
fSimpleColumnList.clear();
fAggColumnList.clear();
fWindowFunctionColumnList.clear();
SPTP pt;
for (uint32_t i = 0; i < rhs.fFunctionParms.size(); i++)
{
pt.reset(new ParseTree (*(rhs.fFunctionParms[i])));
fFunctionParms.push_back(pt);
pt->walk(getSimpleCols, &fSimpleColumnList);
pt->walk(getAggCols, &fAggColumnList);
pt->walk(getWindowFunctionCols, &fWindowFunctionColumnList);
}
fAlias = rhs.alias();
}
void FunctionColumn::unserialize(messageqcpp::ByteStream& b)
{
uint32_t size, i;
//SRCP rc;
SPTP pt;
FunctionParm::iterator it;
fFunctionParms.erase(fFunctionParms.begin(), fFunctionParms.end());
fSimpleColumnList.clear();
fAggColumnList.clear();
fWindowFunctionColumnList.clear();
ObjectReader::checkType(b, ObjectReader::FUNCTIONCOLUMN);
ReturnedColumn::unserialize(b);
b >> fFunctionName;
b >> size;
for (i = 0; i < size; i++)
{
pt.reset(ObjectReader::createParseTree(b));
fFunctionParms.push_back(pt);
pt->walk(getSimpleCols, &fSimpleColumnList);
pt->walk(getAggCols, &fAggColumnList);
pt->walk(getWindowFunctionCols, &fWindowFunctionColumnList);
}
b >> fTableAlias;
b >> fData;
FuncExp* funcExp = FuncExp::instance();
fFunctor = funcExp->getFunctor(fFunctionName);
// @bug 3506. Special treatment for rand() function. reset the seed
Func_rand* rand = dynamic_cast<Func_rand*>(fFunctor);
if (rand)
rand->seedSet(false);
}
