Hello,
I am working my way through the "Handling File Downloads and Uploads" chapter
in the "Enjoying Web Development" book however I am crashing into a brick wall.
The setter for the LinkFactory is never being called thus resulting in a null
pointer exception.
hivemodule.xml snippet:
<service-point id="BipService"
interface="org.apache.tapestry.engine.IEngineService">
<invoke-factory>
<construct class="com.kodak.mis.web.engine.BipService">
<set-object property="linkFactory"
value="service:tapestry.url.LinkFactory"/>
</construct>
</invoke-factory>
</service-point>
<contribution configuration-id="tapestry.services.ApplicationServices">
<service name="BipService"
object="instance:com.kodak.mis.web.engine.BipService"/>
</contribution>
Code snippet:
public class BipService implements IEngineService {
private static final Logger logger = Logger.getLogger(BipService.class);
private LinkFactory _linkFactory;
public void setLinkFactory(LinkFactory linkFactory) {
if(logger.isDebugEnabled())logger.debug("Link factory called: " +
linkFactory);
_linkFactory = linkFactory;
}
public ILink getLink(boolean post, Object parameter) {
Map parameters = new HashMap();
if(logger.isDebugEnabled()) logger.debug("link factory is null " +
(_linkFactory == null) );
return _linkFactory.constructLink(this,post,parameters,false);
}
It is always null. For the 'set-object' line I can enter complete garbage for
the value and it won't complain!
Am I missing something??
Thanks!
Ryan
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