Ok, I am debugging it and the problem is actually in the method
FlexibleMapAccessor.put at line:
UelUtil.setValue(base, getExpression(base), value == null ? Object.class :
value.getClass(), value);
The problem is that the "base" map is the map containing the results and not
the "context" of the method.
For example:
<set field="total" value="10" type="BigDecimal"/>
<set field="result1" value="totalOrders"/>
<field-to-result field="total" result-name="${result1}"/>
This should add to the output the entry: ["totalOrders": 10]
It instead throws the error because the ${result1} is expanded using the
"result" map rather than the "context" map where the "result1" field is set.
Jacopo
On May 14, 2012, at 12:34 PM, Adrian Crum wrote:
> It must be an old bug. As far as I know, the expression parsing hasn't
> changed recently (with the exception of the recent security fix).
>
> -Adrian
>
> On 5/14/2012 11:27 AM, Jacopo Cappellato wrote:
>> Ok, I will try to look at it and find a fix... do you have any idea about
>> why the content of the brackets is removed during parsing? Is it related to
>> recent changes or it is an old bug? They may be silly questions but I
>> actually don't know much about this code.
>>
>> Jacopo
>>
>> On May 14, 2012, at 12:03 PM, Adrian Crum wrote:
>>
>>> That is a nested expression: The result name is contained in the variable
>>> named "key".
>>>
>>> UEL does not support nested expressions, but we make it work in
>>> FlexibleStringExpander by pre-parsing the String and extracting nested
>>> expressions.
>>>
>>> In addition, FlexibleMapAccessor contains some code to handle nested
>>> expressions (line 66 and 192). So, maybe that code can be improved to be
>>> smarter.
>>>
>>> -Adrian
>>>
>>> On 5/14/2012 10:37 AM, Jacopo Cappellato wrote:
>>>> Hi Adrian,
>>>>
>>>> we have noticed that the following instruction:
>>>>
>>>> <field-to-result field="val" result-name="${key}"/>
>>>>
>>>> (from ContentServices.xml) returns an error in the console:
>>>>
>>>> 2012-05-14 14:12:02,679 (default-invoker-Thread-11)
>>>> [FlexibleMapAccessor.java:163:ERROR] UEL exception while setting value:
>>>> javax.el.ELException: Error parsing '${}': syntax error at position 2,
>>>> encountered '}',
>>>> expected<IDENTIFIER>|<STRING>|<FLOAT>|<INTEGER>|'true'|'false'|'null'|'-'|'!'|'not'|'empty'|'(',
>>>> original = ${key}
>>>>
>>>> However it seems that the value is still returned properly. Any idea of
>>>> how we could fix it?
>>>>
>>>> Thanks,
>>>>
>>>> Jacopo
>>>>
>>>>
>>>>
