All I meant was that the value="[0]" evaluates to a Door object, which implements an IDoor, which I want to use for the setter method.
The documentation for type conversions says: "The framework cannot instantiate an object if it can't determine an appropriate implementation. It recognizes well-known collection interfaces (List, Set, Map, etc) but cannot instantiate MyCustomInterface when all it sees is the interface. In this case, instantiate the target implementation first (eg. in a prepare method) or substitute in an implementation." I'm not smart enough to understand what that means... -----Original Message----- From: Adam Hardy [mailto:ahardy.str...@cyberspaceroad.com] Sent: Wednesday, February 04, 2009 11:41 AM To: Struts Users Mailing List Subject: Re: Problem passing interface implementing object to an action from a jsp Hi Mike, I can't quite figure out what you're doing wrong. Don't know what you mean exactly about the "iterator value" - but I guess the problem lies with the config for your type conversions. Do you have an xwork-conversions or an action-conversion.properties? That's where you tell the xwork engine which converter to use for that class and setter. Mike Baranski on 04/02/09 16:28, wrote: > Here's my delima: > > I have an interface to represent a Door, called IDoor > I have an interface to represent a DoorProvider, called IDoorProvider. > > I use Spring to inject the DoorProvider implementation for the particular > application to get lists of doors. > > I have an UnlockDoorAction that will unlock an IDoor implementing Door (that > comes from a provider) > > Here is my UnlockDoorAction code that is relevant: > > public String execute() throws Exception > { > this.getDoor().unlockDoor(-1); > return SUCCESS; > } > > public IDoor getDoor() > { > return this.door; > } > > public void setDoor(IDoor cd) > { > this.door = cd; > } > > Here is the JSP code that causes this action to be executed: > > <s:url var="unlock_url" action="unlock" namespace="/door_control"><s:param > name="door" value="[0]"/></s:url> > <s:a href="%{unlock_url}"><center><img alt="Locked" src="<s:url > value="/images/locked.png"/>" border="none"/></center></s:a> > > Now, the value="[0]" is an iterator value of an object that implements the > IDoor interface. > > The Action returns "input", which (I think) is because it can't figure out > how to set the parameter on the UnlockDoorAction. How do I make the thing > recognize that setDoor(IDoor cd) will take that parameter? --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
