com.ervacon.springframework.web.servlet.mvc.webflow
Class RequestParameterNameParameterExtractor

java.lang.Object
  com.ervacon.springframework.web.servlet.mvc.webflow.RequestParameterNameParameterExtractor

All Implemented Interfaces:

ParameterExtractor

public class RequestParameterNameParameterExtractor

extends java.lang.Object

implements ParameterExtractor

Parameter extractor that obtains a parameter value from the name of a request parameter. For instance, it would obtain "search" as value for parameter "_event" when the request contains a parameter named "_event_search".

Exposed configuration properties:

name	default	description
delimiter	_	The delimiter used to seperate the parameter name and value.

Author:

Erwin Vervaet

Field Summary

static java.lang.String

DEFAULT_DELIMITER

Constructor Summary

RequestParameterNameParameterExtractor()

Method Summary

java.lang.String	extractParameter(javax.servlet.http.HttpServletRequest request, java.lang.String paramName) Extract named parameter from given HTTP request.
protected java.lang.String	extractParameter(java.lang.String param, java.lang.String paramName) Extract a value from given parameter, for instance extracting "search" from "_event_search" when the paramName is "_event" and the delimiter is "_".
java.lang.String	getDelimiter() Get the delimiter used by this parameter extractor.
void	setDelimiter(java.lang.String delimiter) Set the delimiter used by this parameter extractor.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_DELIMITER

public static final java.lang.String DEFAULT_DELIMITER

See Also:

Constant Field Values

Constructor Detail

RequestParameterNameParameterExtractor

public RequestParameterNameParameterExtractor()

Method Detail

getDelimiter

public java.lang.String getDelimiter()

Get the delimiter used by this parameter extractor. Defaults to "_".

setDelimiter

public void setDelimiter(java.lang.String delimiter)

Set the delimiter used by this parameter extractor. Defaults to "_".

extractParameter

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

Description copied from interface: ParameterExtractor

Extract named parameter from given HTTP request.

Specified by:

extractParameter in interface ParameterExtractor

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

extractParameter

protected java.lang.String extractParameter(java.lang.String param,
                                            java.lang.String paramName)

Extract a value from given parameter, for instance extracting "search" from "_event_search" when the paramName is "_event" and the delimiter is "_".

This method is only called with a param value that starts with the paramName value!

If no valid value can be extracted, null is returned.