template<> NValue NValue::callUnary<FUNC_VOLT_POLYGONFROMTEXT>() const
{
bool is_shell = true;
if (isNull()) {
return NValue::getNullValue(VALUE_TYPE_GEOGRAPHY);
}
int32_t textLength;
const char* textData = getObject_withoutNull(&textLength);
const std::string wkt(textData, textLength);
// Discard whitespace, but return commas or parentheses as tokens
Tokenizer tokens(wkt, boost::char_separator<char>(" \f\n\r\t\v", ",()"));
Tokenizer::iterator it = tokens.begin();
Tokenizer::iterator end = tokens.end();
if (! boost::iequals(*it, "polygon")) {
throwInvalidWktPoly("does not start with POLYGON keyword");
}
++it;
if (! boost::iequals(*it, "(")) {
throwInvalidWktPoly("missing left parenthesis after POLYGON keyword");
}
++it;
std::size_t length = Polygon::serializedLengthNoLoops();
std::vector<std::unique_ptr<S2Loop> > loops;
while (it != end) {
loops.push_back(std::unique_ptr<S2Loop>(new S2Loop()));
readLoop(is_shell, wkt, it, end, loops.back().get());
// Only the first loop is a shell.
is_shell = false;
length += Loop::serializedLength(loops.back()->num_vertices());
if (*it == ",") {
++it;
}
else if (*it == ")") {
++it;
break;
}
else {
throwInvalidWktPoly("unexpected token: '" + (*it) + "'");
}
}
if (it != end) {
// extra stuff after input
throwInvalidWktPoly("unrecognized input after WKT: '" + (*it) + "'");
}
NValue nval = ValueFactory::getUninitializedTempGeographyValue(length);
char* storage = const_cast<char*>(ValuePeeker::peekObjectValue(nval));
Polygon poly;
poly.init(&loops); // polygon takes ownership of loops here.
SimpleOutputSerializer output(storage, length);
poly.saveToBuffer(output);
return nval;
}
template<> NValue NValue::callUnary<FUNC_VOLT_POINTFROMTEXT>() const
{
if (isNull()) {
return NValue::getNullValue(VALUE_TYPE_POINT);
}
int32_t textLength;
const char* textData = getObject_withoutNull(&textLength);
std::string wkt(textData, textLength);
// Discard whitespace, but return commas or parentheses as tokens
Tokenizer tokens(wkt, boost::char_separator<char>(" \f\n\r\t\v", ",()"));
Tokenizer::iterator it = tokens.begin();
Tokenizer::iterator end = tokens.end();
if (! boost::iequals(*it, "point")) {
throwInvalidWktPoint(wkt);
}
++it;
if (! boost::iequals(*it, "(")) {
throwInvalidWktPoint(wkt);
}
++it;
GeographyPointValue::Coord lng = stringToCoord(POINT, wkt, *it);
++it;
GeographyPointValue::Coord lat = stringToCoord(POINT, wkt, *it);
++it;
if ( lng < -180.0 || lng > 180.0) {
throwInvalidPointLongitude(wkt);
}
if (lat < -90.0 || lat > 90.0 ) {
throwInvalidPointLatitude(wkt);
}
if (! boost::iequals(*it, ")")) {
throwInvalidWktPoint(wkt);
}
++it;
if (it != end) {
throwInvalidWktPoint(wkt);
}
NValue returnValue(VALUE_TYPE_POINT);
returnValue.getGeographyPointValue() = GeographyPointValue(lng, lat);
return returnValue;
}
template<> NValue NValue::callUnary<FUNC_VOLT_POLYGONFROMVALIDTEXT>() const
{
if (isNull()) {
return NValue::getNullValue(VALUE_TYPE_GEOGRAPHY);
}
int32_t textLength;
const char* textData = getObject_withoutNull(&textLength);
const std::string wkt(textData, textLength);
return polygonFromText(wkt, true);
}
/*
* 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);
}
