ForEachChild(i, record)
{
IHqlExpression * cur = record->queryChild(i);
switch (cur->getOperator())
{
case no_record:
expandFieldNames(errorProcessor, out, cur, prefix, sep, formatFunc);
break;
case no_ifblock:
expandFieldNames(errorProcessor, out, cur->queryChild(1), prefix, sep, formatFunc);
break;
case no_field:
{
StringBuffer lowerName;
lowerName.append(cur->queryName()).toLowerCase();
if (formatFunc)
{
HqlExprArray args;
args.append(*createConstant(lowerName.str()));
OwnedHqlExpr bound = createBoundFunction(NULL, formatFunc, args, NULL, true);
OwnedHqlExpr folded = foldHqlExpression(errorProcessor, bound, NULL, HFOthrowerror|HFOfoldimpure|HFOforcefold);
assertex(folded->queryValue());
lowerName.clear();
getStringValue(lowerName, folded);
}
switch (cur->queryType()->getTypeCode())
{
case type_record:
case type_row:
{
unsigned len = prefix.length();
prefix.append(lowerName).append(".");
expandFieldNames(errorProcessor, out, cur->queryRecord(), prefix, sep, formatFunc);
prefix.setLength(len);
break;
}
default:
{
if (out.length())
out.append(sep);
out.append(prefix).append(lowerName);
break;
}
}
break;
}
}
}
void ViewFieldECLTransformer::transform(unsigned & lenTarget, char * & target, unsigned lenSource, const char * source, const HqlExprArray & extraArgs)
{
Owned<ITypeInfo> sourceType = makeUtf8Type(lenSource, 0);
IValue * sourceValue = createUtf8Value(source, LINK(sourceType));
OwnedHqlExpr sourceExpr = createConstant(sourceValue);
HqlExprArray actuals;
actuals.append(*LINK(sourceExpr));
appendArray(actuals, extraArgs);
Owned<IErrorReceiver> errorReporter = createThrowingErrorReceiver();
OwnedHqlExpr call = createBoundFunction(errorReporter, function, actuals, NULL, true);
OwnedHqlExpr castValue = ensureExprType(call, utf8Type);
OwnedHqlExpr folded = quickFoldExpression(castValue, NULL, 0);
IValue * foldedValue = folded->queryValue();
assertex(foldedValue);
unsigned len = foldedValue->queryType()->getStringLen();
const char * data = static_cast<const char *>(foldedValue->queryValue());
unsigned size = rtlUtf8Size(len, data);
lenTarget = len;
target = (char *)rtlMalloc(size);
memcpy(target, data, size);
}
