[WebMacro-user] Rather strange error ..

[<web...@st...>]

I get this error when trying to access some property. It is just on this
one single installation, and I can't seem to understand why. Everything is
(seems to be) exactly the same on the prod and devel sites, however, the
devel site is OK, while this one function always gives this exception on
the prod site:

(Webmacro 1.0)

WebMacro encountered an error while executing a template: (stream):

org.webmacro.PropertyException: Attempt to invoke method public
com.corelets.statistics.SamplerHolder$Values
com.corelets.statistics.SamplerHolder.getValues() on object
com.corelets.servlets.Parameters@1b...@CC...rameters|Sampler5Min
of class com.corelets.statistics.SamplerHolder raised an exception:
java.lang.IllegalAccessError: tried to access method
java.lang.Object.clone()Ljava/lang/Object; from class
com.corelets.statistics.SamplerHolder
java.lang.IllegalAccessError: tried to access method
java.lang.Object.clone()Ljava/lang/Object; from class
com.corelets.statistics.SamplerHolder

(The insane "on object" is just the .toString() of that object, which is a
bit weird. However ..)

The secondary stack trace:

-- secondary stack trace --
java.lang.IllegalAccessError: tried to access method java.lang.Object.clone()Ljava/lang/Object; from class com.corelets.statistics.SamplerHolder
        at com.corelets.statistics.SamplerHolder.getValues(SamplerHolder.java:208)
        at sun.reflect.GeneratedMethodAccessor1052.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.webmacro.engine.PropertyOperator.invoke(PropertyOperatorCache.java:855)
        at org.webmacro.engine.UnaryMethodAccessor.get(PropertyOperatorCache.java:1260)
        at org.webmacro.engine.PropertyOperator.getProperty(PropertyOperatorCache.java:645)
        at org.webmacro.engine.PropertyOperatorCache.getProperty(PropertyOperatorCache.java:138)
        at org.webmacro.Context.internalGet(Context.java:301)
        at org.webmacro.Context.getProperty(Context.java:355)
        at org.webmacro.engine.PropertyVariable.getValue(PropertyVariable.java:49)
        at org.webmacro.engine.Variable.evaluate(Variable.java:150)
        at org.webmacro.directive.SetDirective.write(SetDirective.java:76)
        at org.webmacro.engine.Block.write(Block.java:107)
        at org.webmacro.engine.WMTemplate.write(WMTemplate.java:218)
        at org.webmacro.directive.IncludeDirective.write(IncludeDirective.java:360)
        at org.webmacro.engine.Block.write(Block.java:109)
        at org.webmacro.directive.ForeachDirective.write(ForeachDirective.java:156)
        at org.webmacro.engine.Block.write(Block.java:107)
        at org.webmacro.engine.WMTemplate.write(WMTemplate.java:218)
        at org.webmacro.servlet.WMServlet.execute(WMServlet.java:556)
        at org.webmacro.servlet.WMServlet.doRequest(WMServlet.java:277)
        at org.webmacro.servlet.WMServlet.doGet(WMServlet.java:202)


Problem occurs at:

            // Copy the Last Sample array
            if (_lastSample == null) {
                // There hasn't been any sample yet.
                ret.lastSample = new double[_numberOfStatistics];
            }
            else {
HERE ==>>       ret.lastSample = (double[]) _lastSample.clone();
            }


-- 
Mvh,
Endre Stølsvik               M[+47 93054050] F[+47 51625182]
Developer @ CoreTrek AS         -  http://www.coretrek.com/
CoreTrek corporate portal / EIP -  http://www.corelets.com/