# OSGeo::FDO::Common Namespace Reference

## Classes
class | DictionaryElement
| DictionaryElement is an element in a DictionaryElementCollection. It consists of a name-value pair. More...
class | DictionaryElementCollection
| DictionaryElementCollection is a collection of DictionaryElement objects(name-value pairs). More...
class | Exception
| Exception is a root class for the exception type thrown from classes. It derives from a language level exception class that is environment specific. More...
interface | IStreamReader
| The IStreamReader class is a top level interface for stream reader classes. The API it provides allows the user to read large streams of data in blocks of items. More...
class | IStreamReaderImp
| The IStreamReader class is a top level interface for stream reader classes. The API it provides allows the user to read large streams of data in blocks of items. More...
class | ObjectFactory
| () More...
class | StringCollection
| StringCollection is a collection of name-value pairs. More...
class | StringElement
| StringElement is an element in a StringCollection. More...
## Namespaces
namespace | Gml212
namespace | Io
namespace | Xml
namespace | Xsl
## Variables
public __gc __interface | IStreamReader