void RowFilter::doCompare(Poco::Dynamic::Var& ret,
Poco::Dynamic::Var& val,
CompT comp,
const ComparisonEntry& ce)
{
if (ret.isEmpty()) ret = comp(val, ce.get<0>());
else
{
if (ce.get<2>() == OP_OR)
ret = ret || comp(val, ce.get<0>());
else if (ce.get<2>() == OP_AND)
ret = ret && comp(val, ce.get<0>());
else
throw IllegalStateException("Unknown logical operation.");
}
}
void Controller::searchSimilarRequest(std::map<std::string, std::string>& params, const Poco::Dynamic::Var& request) {
Record record;
vector<uint8_t>* image_data = NULL;
int count = 10;
if (params.count("blockHash")) {
record.getHashes()[BlockHash] = str2bin(params["blockHash"]);
}
if (params.count("dHash")) {
record.getHashes()[DHash] = str2bin(params["dHash"]);
}
if (params.count("gaussDHash")) {
record.getHashes()[GaussDHash] = str2bin(params["gaussDHash"]);
}
if (params.count("gauss2DHash")) {
record.getHashes()[Gauss2DHash] = str2bin(params["gauss2DHash"]);
}
if (params.count("gaussBlockHash")) {
record.getHashes()[GaussBlockHash] = str2bin(params["gaussBlockHash"]);
}
if (params.count("url")) {
image_data = Image::fromUrl(params["url"]);
}
if (params.count("count")) {
count = atoi(params["count"].c_str());
}
if (!request.isEmpty()) {
Poco::JSON::Object::Ptr json = request.extract<Poco::JSON::Object::Ptr>();
if (!image_data && json->has("image_base64")) {
image_data = Image::fromBase64(json->getValue<string>("image_base64"));
}
if (!image_data && json->has("image_url")) {
image_data = Image::fromUrl(json->getValue<string>("image_url"));
}
}
if (image_data) {
HashAlgorithmManager::getInstance().attachSimilarHashes(record, image_data);
delete image_data;
}
appio::print_ok(HashManager::getInstance().searchSimilar(record, count));
}
void Controller::handle(const std::vector<std::string>& parameters, Poco::Net::HTTPServerRequest& request, Poco::Net::HTTPServerResponse& response)
{
_parameters = parameters;
_request = &request;
_response = &response;
if ( _parameters.size() > 0 )
{
_action = _parameters.front();
_parameters.erase(_parameters.begin());
}
else
{
setResponseStatus(Poco::Net::HTTPResponse::HTTP_BAD_REQUEST, "Invalid URI parameters");
return;
}
for(std::vector<std::string>::iterator it = _parameters.begin(); it != _parameters.end(); ++it)
{
int pos = it->find_first_of(':');
if ( pos != std::string::npos )
{
std::string name = it->substr(0, pos);
std::string value = it->substr(pos+1);
_namedParameters[name] = value;
}
}
std::string contentType = request.getContentType();
if ( contentType == "application/json" )
{
Poco::JSON::Parser parser;
try
{
Poco::Dynamic::Var json = parser.parse(request.stream());
if ( ! json.isEmpty() && json.type() == typeid(Poco::JSON::Object::Ptr) )
{
_data->set("filter", json.extract<Poco::JSON::Object::Ptr>());
}
}
catch(Poco::JSON::JSONException& jsone)
{
// Make sure everything is read, otherwise this can result
// in Bad Request error in the next call.
Poco::NullOutputStream nos;
Poco::StreamCopier::copyStream(request.stream(), nos);
setResponseStatus(Poco::Net::HTTPResponse::HTTP_BAD_REQUEST, "JSON error occurred: " + jsone.displayText());
return;
}
}
else
{
_form.load(request, request.stream(), *this);
}
// Make sure everything is read, otherwise this can result
// in Bad Request error in the next call.
Poco::NullOutputStream nos;
Poco::StreamCopier::copyStream(request.stream(), nos);
beforeAction();
if ( response.getStatus() != Poco::Net::HTTPResponse::HTTP_OK
|| _data->has("error") )
{
//TODO: return error template file or json error
}
const ActionMap& actions = getActions();
ActionMap::const_iterator it = actions.find(_action);
if ( it == actions.end() )
{
setResponseStatus(Poco::Net::HTTPResponse::HTTP_NOT_FOUND, "Invalid action '" + _action + "' specified.");
return;
}
ActionFn action = it->second;
(this->*action)();
afterAction();
}
bool RowFilter::isAllowed(std::size_t row) const
{
Poco::Dynamic::Var retVal;
const RecordSet& rs = recordSet();
std::size_t columns = rs.columnCount();
ComparisonMap::const_iterator it = _comparisonMap.begin();
ComparisonMap::const_iterator end = _comparisonMap.end();
for (; it != end; ++it)
{
for (std::size_t col = 0; col < columns; ++col)
{
const std::string name = toUpper(rs.metaColumn(static_cast<UInt32>(col)).name());
if (_comparisonMap.find(name) == _comparisonMap.end()) continue;
Poco::Dynamic::Var ret;
CompT compOp = 0;
Poco::Dynamic::Var val = rs.value(col, row, false);
switch (it->second.get<1>())
{
case VALUE_LESS_THAN:
compOp = less; break;
case VALUE_LESS_THAN_OR_EQUAL:
compOp = lessOrEqual; break;
case VALUE_EQUAL:
compOp = equal; break;
case VALUE_GREATER_THAN:
compOp = greater; break;
case VALUE_GREATER_THAN_OR_EQUAL:
compOp = greaterOrEqual; break;
case VALUE_NOT_EQUAL:
compOp = notEqual; break;
case VALUE_IS_NULL:
compOp = isNull; break;
default:
throw IllegalStateException("Unsupported comparison criteria.");
}
doCompare(ret, val, compOp, it->second);
if (retVal.isEmpty()) retVal = ret;
else retVal = retVal || ret;
}
}
// iterate through children
FilterMap::const_iterator fIt = _filterMap.begin();
FilterMap::const_iterator fEnd = _filterMap.end();
for (; fIt != fEnd; ++fIt)
{
if (OP_OR == fIt->second)
{
if (retVal.isEmpty())
retVal = fIt->first->isAllowed(row);
else
retVal = retVal || fIt->first->isAllowed(row);
}
else if (OP_AND == fIt->second)
{
if (retVal.isEmpty())
retVal = fIt->first->isAllowed(row);
else
retVal = retVal && fIt->first->isAllowed(row);
}
else
throw IllegalStateException("Unknown logical operation.");
}
if (retVal.isEmpty()) retVal = true; // no filtering found
return (!_not) && retVal.extract<bool>();
}
