Hi Marc,
do I understand your problem correct, that you have two forms on your
page? This can be a problem. Since having a deeper cook into JavaFlow I
could see, that the form instance is bound to an AvalonContext with a
fixed Name. This means, that one FormInstance should overwrite the other
one. I don't exactyl know how this is implemented in FlowScript, but
since Generators like the SuggestionListGenerator also looks for a
hard-coded "CocoonFormsInstnce" object, I guess this is generally done
that way.
Even if I know this doesn't help you solve the problem ... maybe it
helps you find it.
Feel free to contact me. I will do my best to help you if you provide a
little more detailed description of your problem / applicatoin setup /
intention.
Chris
Marc Salvetti schrieb:
Hello,
i'm running in a tricky problem while trying to add a search form to
every page of the site.
Anytime an ajax request is sent, either by a cform widget on another
form, or by a custom js function, i get an error 500 :
*Couldn't evaluate expression cformsHelper.pushWidget(id)*
resource://org/apache/cocoon/forms/generation/jx-macros.xml - 45:52 //
with a NPE in the pushWidget() method.
Caused by: java.lang.NullPointerException
at
org.apache.cocoon.forms.generation.JXMacrosHelper.pushWidget(JXMacrosHelper.java:163)
at
org.apache.cocoon.forms.generation.JXMacrosHelper.pushWidget(JXMacrosHelper.java
:231)
at sun.reflect.GeneratedMethodAccessor100.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at
org.apache.commons.jexl.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:268)
at org.apache.commons.jexl.parser.ASTMethod.execute(ASTMethod.java:61)
at org.apache.commons.jexl.parser.ASTReference.execute
(ASTReference.java:68)
at
org.apache.commons.jexl.parser.ASTReference.value(ASTReference.java:50)
at
org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:86)
at org.apache.cocoon.components.expression.jexl.JexlExpression.evaluate
(JexlExpression.java:47)
... 135 more
By looking at the source, it appears that the member updatedWidgets
has not been initialized before the call to pushWiget, which cause the
NPE. Apparently, this is initialized in the call to form.process(),
every time the form is submited.
But in my case, i don't submit this form, but either another form or
no form at all, so i don't really know what i should do to fix this
problem.
Any help would be greatly appreciated,
Marc
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