Package nl.b3p.commons.stripes

Class SelectivePopulationStrategy

  • All Implemented Interfaces:
    net.sourceforge.stripes.config.ConfigurableComponent, net.sourceforge.stripes.tag.PopulationStrategy
    public class SelectivePopulationStrategy
extends Object
implements net.sourceforge.stripes.tag.PopulationStrategy
    When you want to select the populationstrategy per actionbean, this the way to go: Drop the SelectivePopulationStrategy into Stripes' extensions package and annotate your action bean. Assuming you want to use BeanFirstPopulationStrategy on your ExampleActionBean, it would look as follows.
    Author:
    Meine Toonen meinetoonen@b3partners.nl Possible populationstrategies: The DefaultPopulationStrategy searches in the following order for the first non-null value(s) when populating a given input tag: The HttpServletRequest parameter map for values matching the name of the input tag The ActionBean for a property or nested property matching the name of the input tag The value specified by the tag itself (varies by tag; usually as a value attribute, or as the body of the tag) The reasoning behind this is as follows: What the user entered should take precedence when re-displaying input to that same user Values in the ActionBean usually represent domain values, and are common sources or pre-population Values on the page are usually defaults specified for when no other applicable value is present Stripes also includes a second population strategy called BeanFirstPopulationStrategy. The semantics of this population strategy are quite different - it's search strategy is: If the field in question has errors, revert to the DefaultPopulationStrategy Otherwise if an ActionBean is present and has a matching property, use it's value even if it is null Otherwise look for a non-null value specified on the page And lastly, look for a non-null value in the HttpServletRequest From: http://www.stripesframework.org/display/stripes/Overriding+PopulationStrategy+per+ActionBean

    • Constructor Detail

      • SelectivePopulationStrategy

        public SelectivePopulationStrategy()

    • Method Detail

      • getDelegate

        protected net.sourceforge.stripes.tag.PopulationStrategy getDelegate​(net.sourceforge.stripes.tag.InputTagSupport tag)
                                                              throws net.sourceforge.stripes.exception.StripesJspException
        Throws:
        net.sourceforge.stripes.exception.StripesJspException

      • getValue

        public Object getValue​(net.sourceforge.stripes.tag.InputTagSupport tag)
                throws net.sourceforge.stripes.exception.StripesJspException
        Specified by:
        getValue in interface net.sourceforge.stripes.tag.PopulationStrategy
        Throws:
        net.sourceforge.stripes.exception.StripesJspException

      • init

        public void init​(net.sourceforge.stripes.config.Configuration configuration)
          throws Exception
        Specified by:
        init in interface net.sourceforge.stripes.config.ConfigurableComponent
        Throws:
        Exception