[rules-users] Keep getting error trying to access value in hash map.

[Mark Proctor]

samd wrote:
> It was my understanding based on other posts that was the required syntax for
> dealing with with a Map in Drools. I'll try what you suggest.
>   
var.map['key] is valid syntax.

But looking at your example "codes" is your map, so if you do 
codes.values you are returning a set. you can't use the square notation 
on a set.

Mark
> Alessandro Terrinoni wrote:
>   
>>
>>
>>     
>>> Date: Fri, 10 Apr 2009 17:02:14 -0700
>>> From: sdoyle_2 at yahoo.com
>>> To: rules-users at lists.jboss.org
>>> Subject: [rules-users] Keep getting error trying to access value in hash
>>> map.
>>>
>>>
>>> I'm trying to extract the value from a hashmap after first extracting a
>>> key
>>> and I keep getting the same error.
>>>
>>> Here is the rule information:
>>>
>>> target: Target();
>>> perm: PermissionCheck(target == target, action == "edit", granted ==
>>> false);
>>> primaryKey : TargetId(targetNum == 1) from target.codes.keySet();
>>> primaryCode : TargetCode() from target.codes.values[primaryKey];
>>>       
>> when you write target.codes.values[primaryKey] drools looks for a getter
>> method "getValues" in the object "codes" trying to return a field called
>> "values".
>>
>> try to replace target.codes.values[primaryKey] with
>> target.codes.get(primaryKey)
>>
>> Alessandro Terrinoni
>>
>>
>>     
>>> Here is the error:
>>>
>>> Caused by: javax.el.ELException: /layout/test.xhtml @25,111
>>> rendered="#{s:hasPermission(target,'edit')}": org.mvel.CompileException:
>>> unable to resolve property: values
>>>         at
>>> com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:76)
>>>         at
>>> javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:390)
>>>         ... 61 more
>>> Caused by: org.mvel.CompileException: unable to resolve property: values
>>>         at
>>> org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAcces
>>> sorOptimizer.java:288)
>>>         at
>>> org.mvel.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAcce
>>> ssorOptimizer.java:109)
>>>         at
>>> org.mvel.ast.VariableDeepPropertyNode.getReducedValueAccelerated(VariableDeepPropertyNode
>>> .java:29)
>>>
>>> Thanks
>>> -- 
>>> View this message in context:
>>> http://www.nabble.com/Keep-getting-error-trying-to-access-value-in-hash-map.-tp22996482p22996482.html
>>> Sent from the drools - user mailing list archive at Nabble.com.
>>>
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>>> rules-users mailing list
>>> rules-users at lists.jboss.org
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>>>       
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>>     
>
>   

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