template<> NValue NValue::callUnary<FUNC_VOLT_POINT_LONGITUDE>() const {
if (isNull()) {
return NValue::getNullValue(VALUE_TYPE_DOUBLE);
}
const GeographyPointValue point = getGeographyPointValue();
NValue retVal(VALUE_TYPE_DOUBLE);
retVal.getDouble() = point.getLongitude();
return retVal;
}
template<> NValue NValue::callUnary<FUNC_VOLT_ASTEXT_GEOGRAPHY_POINT>() const {
assert(getValueType() == VALUE_TYPE_POINT);
if (isNull()) {
return NValue::getNullValue(VALUE_TYPE_VARCHAR);
}
const std::string pointAsText = getGeographyPointValue().toWKT();
return getTempStringValue(pointAsText.c_str(), pointAsText.length());
}
/*
* Produce a debugging string describing an NValue.
*/
std::string NValue::debug() const {
const ValueType type = getValueType();
if (isNull()) {
return "<NULL>";
}
std::ostringstream buffer;
std::string out_val;
const char* ptr;
int64_t addr;
buffer << getTypeName(type) << "::";
switch (type) {
case VALUE_TYPE_BOOLEAN:
buffer << (getBoolean() ? "true" : "false");
break;
case VALUE_TYPE_TINYINT:
buffer << static_cast<int32_t>(getTinyInt());
break;
case VALUE_TYPE_SMALLINT:
buffer << getSmallInt();
break;
case VALUE_TYPE_INTEGER:
buffer << getInteger();
break;
case VALUE_TYPE_BIGINT:
buffer << getBigInt();
break;
case VALUE_TYPE_DOUBLE:
buffer << getDouble();
break;
case VALUE_TYPE_VARCHAR:
{
int32_t length;
ptr = getObject_withoutNull(&length);
addr = reinterpret_cast<int64_t>(ptr);
out_val = std::string(ptr, length);
buffer << "[" << length << "]";
buffer << "\"" << out_val << "\"[@" << addr << "]";
break;
}
case VALUE_TYPE_VARBINARY:
{
int32_t length;
ptr = getObject_withoutNull(&length);
addr = reinterpret_cast<int64_t>(ptr);
out_val = std::string(ptr, length);
buffer << "[" << length << "]";
buffer << "-bin[@" << addr << "]";
break;
}
case VALUE_TYPE_DECIMAL:
buffer << createStringFromDecimal();
break;
case VALUE_TYPE_TIMESTAMP: {
try {
std::stringstream ss;
streamTimestamp(ss);
buffer << ss.str();
}
catch (const SQLException &) {
buffer << "<out of range timestamp:" << getBigInt() << ">";
}
catch (...) {
buffer << "<exception when converting timestamp:" << getBigInt() << ">";
}
break;
}
case VALUE_TYPE_POINT:
buffer << getGeographyPointValue().toString();
break;
case VALUE_TYPE_GEOGRAPHY:
buffer << getGeographyValue().toString();
break;
default:
buffer << "(no details)";
break;
}
std::string ret(buffer.str());
return (ret);
}
