com.ervacon.springframework.web.servlet.mvc.webflow
Interface ParameterExtractor

All Known Implementing Classes:

RequestParameterNameParameterExtractor, RequestParameterValueParameterExtractor

public interface ParameterExtractor

Interface for strategy objects used by the web flow controller to extract parameter values from an incoming HTTP request.

Author:

Erwin Vervaet

Method Summary

java.lang.String

extractParameter(javax.servlet.http.HttpServletRequest request, java.lang.String paramName) Extract named parameter from given HTTP request.

Method Detail

extractParameter

public java.lang.String extractParameter(javax.servlet.http.HttpServletRequest request,
                                         java.lang.String paramName)

Extract named parameter from given HTTP request.

Parameters:

request - current HTTP request

paramName - name of the parameter to extract

Returns:

value of the extracted parameter or null if the parameter does not exist