Bugs item #579131, was opened at 2002-07-09 10:40
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=104754&aid=579131&group_id=4754
Category: Tapestry
Group: bug
Status: Open
Resolution: None
Priority: 7
Submitted By: Howard Lewis Ship (hship)
Assigned to: Howard Lewis Ship (hship)
Summary: Load order problem with string-binding
Initial Comment:
Bindings get set during page load, but for <string-
binding>s, the engine property hasn't been set.
ValidField caches the value of the binding in
setDisplayNameBinding().
NPE at AbstracTComponent.java:942
public String getString(String key)
{
if (strings == null)
strings = getPage().getEngine
().getComponentStringsSource().getStrings(this);
return strings.getString(key);
}
}
getEngine() returns null.
net.sf.tapestry.util.DynamicInvocationException
Could not invoke method getDisplayNameBinding on
net.sf.tapestry.valid.ValidField@4520eb
[Login/inputPassword].
java.lang.reflect.InvocationTargetException
java.lang.NullPointerException
Stack Trace:
net.sf.tapestry.AbstractComponent.getString
(AbstractComponent.java:942)
net.sf.tapestry.binding.StringBinding.getObject
(StringBinding.java:69)
net.sf.tapestry.binding.AbstractBinding.getString
(AbstractBinding.java:112)
net.sf.tapestry.valid.ValidField.setDisplayNameBinding
(ValidField.java:182)
java.lang.reflect.Method.invoke(Native Method)
net.sf.tapestry.util.prop.PropertyAccessor.set
(PropertyAccessor.java:168)
net.sf.tapestry.AbstractComponent.setBinding
(AbstractComponent.java:676)
net.sf.tapestry.pageload.PageLoader.bind
(PageLoader.java:184)
net.sf.tapestry.pageload.PageLoader.setBindings
(PageLoader.java:518)
net.sf.tapestry.pageload.PageLoader.loadPage
(PageLoader.java:465)
net.sf.tapestry.pageload.PageSource.getPage
(PageSource.java:178)
net.sf.tapestry.engine.RequestCycle.getPage
(RequestCycle.java:223)
net.sf.tapestry.engine.PageService.service
(PageService.java:84)
net.sf.tapestry.engine.AbstractEngine.service
(AbstractEngine.java:743)
net.sf.tapestry.ApplicationServlet.doService
(ApplicationServlet.java:198)
net.sf.tapestry.ApplicationServlet.doGet
(ApplicationServlet.java:163)
Solution:
Set the engine property early ... just after instantiating
the page.
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