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The Vault

What is the vault ?

The vault contains lots of unsorted problems, snippets, remarks and ideas, mostly found in posts in the WebWork Forum. You can think of this page as a place to store content before it is analyzed and put in the official docs, cookbook or FAQ. It's raw, unpolished, and can contain typos. If you can't find it in the docs, you can take a look in here (or use the search in the forum). It also gives an idea of what problems ww users encounter in their search for the holy grail.

Feel free to 'take' issues from this page and move them to an appropriate page.

Migration to 2.2

Note about upgrading your WW tags to 2.2

• http://forums.opensymphony.com/thread.jspa?threadID=13870&tstart=0^{Image Removed}

Just a quick fyi that caused issues for us... In 2.2 when extending UIBean evaluateExtraParams() no longer takes parameters. (Our parameters were not working until we realized that evaluateExtraParams was not being invoked due to the change.) In 2.1 evaluateExtraParams was passed the stack IIRC.

Not sure if this is documented anywhere but it caused us quite a headache when migrating from 2.1 to 2.2.

Where did the velocity templates go ?

• http://forums.opensymphony.com/thread.jspa?threadID=13108&tstart=0^{Image Removed}

checking cvs log, it seems that Pat has removed it with comment as follows:

removing velocity macro implementations - they are so old and out of date now it will cause more harm than good keeping them around

Best practices

Should I make an action or rather link to a .jsp page ?

• http://forums.opensymphony.com/thread.jspa?threadID=14424&tstart=0^{Image Removed}

If you put an action configuration in your xwork.xml but don't put an action
class attribute, it will default to using the ActionSupport class, which
just returns SUCCESS.

Migration to Spring IoC

How can we migrate ServletRequestAware, ServletResponseAware and ValidationAware to Spring bean definitions?

• http://forums.opensymphony.com/thread.jspa?threadID=13551&tstart=0^{Image Removed}

I tink just the normal way would work. The action will now be created by spring, and if the ServletConfigInterceptor is in the stack and the action implementation implement those interface, webwork should set the appropriate methods.

Freemarker, Velocity, JSP

How to catch Freemarker exceptions (the ugly big yellow pages)

• http://forums.opensymphony.com/thread.jspa?threadID=13829&tstart=0^{Image Removed}

FreeMarker delegates exception handling to so-called TemplateExceptionHandlers. By default the HTML_DEBUG_HANDLER is used (this one generates the yellow error page), but you can easily specify a different exception handler by using the setTemplateExceptionHandler method of your configuration object. FM provides some simple handlers you can use, in your case I recommend the RETHROW_HANDLER ( http://freemarker.org/docs/api/freemarker/template/TemplateExceptionHandler.html^{Image Removed}).

My ww:include actions aren't processed

• http://forums.opensymphony.com/thread.jspa?threadID=13479&tstart=0^{Image Removed}

Did you declare the ww tag library in your includes ? If I'm not mistaken, jsp includes work different from ww includes (ww process the pages before including them).

I'm using ww:urlHelper in combination with the c:out tag, but it won't work !

• http://forums.opensymphony.com/thread.jspa?threadID=14312&tstart=0^{Image Removed}

if the url with &amp is used in the value attribute it will not work properly unless the escapeXml is set to false.

Validation

When using clientside validation, DWR states it gets No Data From Server

• http://forums.opensymphony.com/thread.jspa?threadID=14135&tstart=0^{Image Removed}

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