本文整理汇总了C++中SharedValue::SetNull方法的典型用法代码示例。如果您正苦于以下问题：C++ SharedValue::SetNull方法的具体用法？C++ SharedValue::SetNull怎么用？C++ SharedValue::SetNull使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SharedValue的用法示例。
在下文中一共展示了SharedValue::SetNull方法的14个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Read
void HttpServerRequest::Read(const ValueList& args, SharedValue result)
{
std::istream &in = request.stream();
if (in.eof() || in.fail())
{
result->SetNull();
return;
}
int max_size = 8096;
if (args.size()==1)
{
max_size = args.at(0)->ToInt();
}
char *buf = new char[max_size];
in.read(buf,max_size);
std::streamsize count = in.gcount();
if (count == 0)
{
result->SetNull();
}
else
{
result->SetObject(new Blob(buf,count));
}
delete [] buf;
}示例2: GetIcon
void AppBinding::GetIcon(const ValueList& args, SharedValue result)
{
SharedApplication app = this->host->GetApplication();
result->SetNull();
if (app && !app->image.empty())
{
result->SetString(app->image);
}
}示例3: _GetSubmenu
void MenuItem::_GetSubmenu(const ValueList& args, SharedValue result)
{
if (this->submenu.isNull())
{
result->SetNull();
}
else
{
result->SetObject(this->submenu);
}
}示例4: _GetMenu
void UIBinding::_GetMenu(const ValueList& args, SharedValue result)
{
AutoMenu menu = this->GetMenu();
if (menu.isNull())
{
result->SetNull();
}
else
{
result->SetObject(menu);
}
}示例5: Field
void ResultSetBinding::Field(const ValueList& args, SharedValue result)
{
if (rs.isNull())
{
result->SetNull();
}
else
{
args.VerifyException("field", "i");
TransformValue(args.at(0)->ToInt(),result);
}
}示例6: GetHeader
void HttpServerRequest::GetHeader(const ValueList& args, SharedValue result)
{
std::string name = args.at(0)->ToString();
if (request.has(name))
{
std::string value = request.get(name);
result->SetString(value);
}
else
{
result->SetNull();
}
}示例7: ToUpperCase
void Blob::ToUpperCase(const ValueList& args, SharedValue result)
{
if (this->length > 0)
{
std::string target = this->buffer;
std::string r = Poco::toUpper(target);
result->SetString(r);
}
else
{
result->SetNull();
}
}示例8: FieldName
void ResultSetBinding::FieldName(const ValueList& args, SharedValue result)
{
if (rs.isNull())
{
result->SetNull();
}
else
{
args.VerifyException("fieldName", "i");
const std::string &str = rs->columnName(args.at(0)->ToInt());
result->SetString(str.c_str());
}
}示例9: GetIcon
void AppBinding::GetIcon(const ValueList& args, SharedValue result)
{
const SharedApplication app = this->host->GetApplication();
if (app->image.empty())
{
result->SetNull();
}
else
{
std::string iconPath = app->image;
result->SetString(iconPath);
}
}示例10: TransformValue
void ResultSetBinding::TransformValue(size_t index, SharedValue result)
{
MetaColumn::ColumnDataType type = rs->columnType(index);
Poco::DynamicAny value = rs->value(index);
if (value.isEmpty())
{
result->SetNull();
}
else if (type == MetaColumn::FDT_STRING)
{
std::string str;
value.convert(str);
result->SetString(str);
}
else if (type == MetaColumn::FDT_BOOL)
{
bool v = false;
value.convert(v);
result->SetBool(v);
}
else if (type == MetaColumn::FDT_FLOAT || type == MetaColumn::FDT_DOUBLE)
{
float f = 0;
value.convert(f);
result->SetDouble(f);
}
else if (type == MetaColumn::FDT_BLOB || type == MetaColumn::FDT_UNKNOWN)
{
std::string str;
value.convert(str);
result->SetString(str);
}
else
{
// the rest of these are ints:
// FDT_INT8,
// FDT_UINT8,
// FDT_INT16,
// FDT_UINT16,
// FDT_INT32,
// FDT_UINT32,
// FDT_INT64,
// FDT_UINT64,
int i;
value.convert(i);
result->SetInt(i);
}
}示例11: GetResponseHeader
void HTTPClientBinding::GetResponseHeader(const ValueList& args, SharedValue result)
{
if (this->response!=NULL)
{
std::string name = args.at(0)->ToString();
if (this->response->has(name))
{
result->SetString(this->response->get(name).c_str());
}
else
{
result->SetNull();
}
}
else
{
throw ValueException::FromString("no available response");
}
}示例12: FieldByName
void ResultSetBinding::FieldByName(const ValueList& args, SharedValue result)
{
result->SetNull();
if (!rs.isNull())
{
args.VerifyException("fieldByName", "s");
std::string name = args.at(0)->ToString();
size_t count = rs->columnCount();
for (size_t i = 0; i<count; i++)
{
const std::string &str = rs->columnName(i);
if (str == name)
{
TransformValue(i,result);
break;
}
}
}
}示例13: Read
void Pipe::Read(const ValueList& args, SharedValue result)
{
if (closed)
{
throw ValueException::FromString("Pipe is already closed");
}
Poco::PipeInputStream *is = dynamic_cast<Poco::PipeInputStream*>(pipe);
if (is==NULL)
{
throw ValueException::FromString("Stream is not readable");
}
char *buf = NULL;
try
{
int size = 1024;
// allow the size of the returned buffer to be
// set by the caller - defaults to 1024 if not specified
if (args.size()>0 && args.at(0)->IsInt())
{
size = args.at(0)->ToInt();
}
buf = new char[size];
is->read(buf,size);
int count = is->gcount();
if (count <=0)
{
result->SetNull();
}
else
{
buf[count] = '\0';
result->SetString(buf);
}
delete [] buf;
}
catch (Poco::ReadFileException &e)
{
if (buf) delete[] buf;
throw ValueException::FromString(e.what());
}
}示例14: ReadLine
void FileStream::ReadLine(const ValueList& args, SharedValue result)
{
if(! this->stream)
{
Logger* logger = Logger::Get("Filesystem.FileStream");
logger->Error("Error in readLine. FileStream must be opened before calling read");
throw ValueException::FromString("FileStream must be opened before calling readLine");
}
try
{
Poco::FileInputStream* fis = dynamic_cast<Poco::FileInputStream*>(this->stream);
if(!fis)
{
Logger* logger = Logger::Get("Filesystem.FileStream");
logger->Error("Error in readLine. FileInputStream is null");
throw ValueException::FromString("FileStream must be opened for reading before calling readLine");
}
if(fis->eof())
{
// close the file
result->SetNull();
}
else
{
std::string line;
std::getline(*fis, line);
result->SetObject(new Blob((std::string)line));
}
}
catch (Poco::Exception& exc)
{
Logger* logger = Logger::Get("Filesystem.FileStream");
logger->Error("Error in readLine. Exception: %s",exc.displayText().c_str());
throw ValueException::FromString(exc.displayText());
}
}