com.toolsverse.service.web

Class DispatchServlet

Object

GenericServlet

HttpServlet

com.toolsverse.service.web.DispatchServlet

All Implemented Interfaces:

Serializable, Servlet, ServletConfig

Direct Known Subclasses:

DispatchJsonServlet

public abstract class DispatchServlet
extends HttpServlet

In the client-server mode the client executes service method using ServiceProxyWeb. The ServiceProxyWeb calls DispatchServlet using HTTP protocol which in return executes service method using ServiceProxyLocal and sends response back to the ServiceProxyWeb. At the end ServiceProxyWeb sends result back to the client. The DispatchServlet is an abstract class and it is expected that particular implementation will add security an pre-caching on init.

Since:

2.0

Version:

2.0

See Also:

ServiceProxyWeb, ServiceProxyLocal, ServiceRequest, ServiceResponse, Serialized Form

Constructor Summary

Constructors

Constructor and Description
DispatchServlet()

Method Summary

Modifier and Type	Method and Description
ServiceResponse	callService(ServiceRequest serviceRequest) Calls service method using ServiceProxyLocal.
void	doGet(HttpServletRequest request, HttpServletResponse response)
void	doPost(HttpServletRequest request, HttpServletResponse response)
Class<? extends Service>	getServiceClass(Class<? extends Service> service) Gets the service class.
ServiceRequest	getServiceRequest(HttpServletRequest request) Gets the service request from the given HttpServletRequest.
void	writeServiceResponse(HttpServletResponse response, ServiceResponse serviceResponse) Writes service response.

Methods inherited from class HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DispatchServlet

public DispatchServlet()

Method Detail

callService

public ServiceResponse callService(ServiceRequest serviceRequest)

Calls service method using ServiceProxyLocal.

Parameters:

serviceRequest - the service request

Returns:

the service response

doGet

public void doGet(HttpServletRequest request,
                  HttpServletResponse response)
           throws ServletException,
                  IOException

Overrides:

doGet in class HttpServlet

Throws:

ServletException

IOException

doPost

public void doPost(HttpServletRequest request,
                   HttpServletResponse response)
            throws ServletException,
                   IOException

Overrides:

doPost in class HttpServlet

Throws:

ServletException

IOException

getServiceClass

public Class<? extends Service> getServiceClass(Class<? extends Service> service)

Gets the service class.

Returns:

the service class

getServiceRequest

public ServiceRequest getServiceRequest(HttpServletRequest request)
                                 throws Exception

Gets the service request from the given HttpServletRequest. It is expected that request if packed using GZIP compression algorithm.

Parameters:

request - the request

Returns:

the service request

Throws:

Exception - in case of any error

writeServiceResponse

public void writeServiceResponse(HttpServletResponse response,
                                 ServiceResponse serviceResponse)
                          throws ServletException,
                                 IOException

Writes service response. Pack it using GZIP compression algorithm.

Parameters:

response - the response

serviceResponse - the service response

Throws:

ServletException - the servlet exception

IOException - Signals that an I/O exception has occurred.