net.sourceforge.stripes.tag

Class BeanFirstPopulationStrategy

java.lang.Object

net.sourceforge.stripes.tag.DefaultPopulationStrategy

net.sourceforge.stripes.tag.BeanFirstPopulationStrategy

All Implemented Interfaces:

ConfigurableComponent, PopulationStrategy

public class BeanFirstPopulationStrategy
extends DefaultPopulationStrategy

An alternative tag population strategy that will normally prefer the value from the ActionBean over values from the request - even when the ActionBean returns null! Only if the ActionBean is not present, or does not define an attribute with the name supplied to the tag will other population sources be examined. When that happens, the strategy will check the value specified on the page next, and finally the value(s) in the request.

If the field represented by the tag is determined to be in error (i.e. the ActionBean is present and has validation errors for the matching field) then the repopulation behaviour will revert to the default behaviour of preferring the request parameters.

Since:

Stripes 1.4

Author:

Tim Fennell

Constructor Summary

Constructors

Constructor and Description
BeanFirstPopulationStrategy()

Method Summary

Methods

Modifier and Type	Method and Description
Object	getValue(InputTagSupport tag) Implementation of the interface method that will follow the search described in the class level JavaDoc and attempt to find a value for this tag.

Methods inherited from class net.sourceforge.stripes.tag.DefaultPopulationStrategy

getConfiguration, getValueFromActionBean, getValueFromTag, getValuesFromRequest, init, isFormInError

Methods inherited from class java.lang.Object

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

Constructor Detail

BeanFirstPopulationStrategy

public BeanFirstPopulationStrategy()

Method Detail

getValue

public Object getValue(InputTagSupport tag)
                throws StripesJspException

Implementation of the interface method that will follow the search described in the class level JavaDoc and attempt to find a value for this tag.

Specified by:

getValue in interface PopulationStrategy

Overrides:

getValue in class DefaultPopulationStrategy

Parameters:

tag - the form input tag whose value to populate

Returns:

Object will be one of null, a single Object or an Array of Objects depending upon what was submitted in the prior request, and what is declared on the ActionBean

Throws:

StripesJspException