# Package com.google.web.bindery.requestfactory.server

Server-side classes for mediating between the client-side and the persistent datastore.

See: Description

Interface Summary
ExceptionHandler: Handles an exception produced while processing a request.
RequestFactoryJarExtractor.Emitter: Describes a way to emit the contents of a classpath, typically into a JAR or filesystem directory.
RequestFactoryJarExtractor.Loader: Abstracts the mechanism by which class files are loaded.

Class Summary
DefaultExceptionHandler: Default implementation for handling exceptions thrown while processing a request.
FindServiceLayer: Allows the use of a very short operation name for the find method.
LocatorServiceLayer: Adds support to the ServiceLayer chain for using `Locator` and `ServiceLocator` helper objects.
Logging: Server-side object that handles log messages sent by `RequestFactoryLogHandler` .
Pair<A,B>: Simple pair class.
ReflectiveServiceLayer: Implements all methods that interact with domain objects.
RequestFactoryJarExtractor: Used to extract RequestFactory client jars from `gwt-user.jar`.
RequestFactoryJarExtractor.ClassLoaderLoader: An implementation of `RequestFactoryJarExtractor.Loader` that uses a `ClassLoader` to retrieve the class files.
RequestFactoryJarExtractor.ErrorContext: Improves error messages by providing context for the user.
RequestFactoryJarExtractor.JarEmitter: An Emitter implementation that creates a jar file.
RequestFactoryServlet: Handles GWT RequestFactory JSON requests.
RequestState: Encapsulates all state relating to the processing of a single request so that the SimpleRequestProcessor can be stateless.
Resolver: Responsible for converting between domain and client entities.
ResolverServiceLayer: Implements all of the resolution methods in ServiceLayer.
ServiceLayer: The ServiceLayer mediates all interactions between the `SimpleRequestProcessor` and the domain environment.
ServiceLayerCache: A cache for idempotent methods in `ServiceLayer`.
ServiceLayerDecorator: Users that intend to alter how RequestFactory interacts with the domain environment can extend this type and provide it to `ServiceLayer.create(ServiceLayerDecorator...)`.
SimpleRequestProcessor: Processes request payloads from a RequestFactory client.
SimpleRequestProcessor.IdToEntityMap: This parameterization is so long, it improves readability to have a specific type.

Enum Summary
RequestFactoryJarExtractor.Mode: Controls what is emitted by the tool.

Exception Summary
DeadEntityException: Indicates the user attempted to perform an operation on an irretrievable entity.
ReportableException: Encapsulates exceptions that should be thrown back to the client.
UnexpectedException: Encapsulates exceptions that indicate something went wrong in RequestFactory code.

## Package com.google.web.bindery.requestfactory.server Description

Server-side classes for mediating between the client-side and the persistent datastore. This package contains classes that can receive client-side read and write requests in the JSON format, perform the necessary operations on the persistent datastore, and return the results in JSON format.

Since:
  GWT 2.1