Hi,
I was currently concatenating all key-value pairs and passing it as a
single sequence to the ObjectConstructorScalarEvaluator. For example:
{"key1" : "value1", "key2" :"value2"} would be passed in the form ("key1",
"value1", "key2", "value2") as arg[0] to the evaluator method of the
ObjectConstructorScalarEvaluator class. Now I see that since the
ConcatenateScalarEvaluator is flattening the sequnces, I think I shall
change the implementation so that arguments to the evaluator method itself
has the keys followed by value followed by boolean flag.
for example now the TaggedValuePointable args to the evaluator method would
be: ["key1", "value1", true, "key2", "value2", false].
Thank you.
Yours sincerely,
Riyafa
On 4 July 2016 at 11:40, Till Westmann <[email protected]> wrote:
> Hi Riyafa,
>
> could you show the problem with an example? It's not obvious to me where
> XQuery's sequence flattening would cause a problem here. The
> ObjectConstructorScalarEvaluator accepts an array of parameters that
> represent the pairs that were specified in the object constructor. The
> parameter array should cleanly separate the individual keys and values -
> even if the values are sequences.
>
> Cheers,
> Till
>
> On 3 Jul 2016, at 4:45, Riyafa Abdul Hameed wrote:
>
> Hi,
>>
>> When attempting to resolve the issue, I have come across a problem:
>>
>> In this case I should recognize if the value is a sequence or not, but
>> when
>> creating a sequence to be passed as an argument to the
>> ObjectConstructorScalarEvaluator, the ConcatenateScalarEvaluatorFactory[1]
>> creates a single sequence using the entries in all the sequences passed to
>> it.
>>
>> I have been wondering how to recognize sequences passed as value in an
>> Object if ConcatenateScalarEvaluatorFactory removes all the SequenceTags.
>> Please kindly help with any suggestions.
>>
>> [1]
>>
>> https://github.com/apache/vxquery/blob/master/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/sequence/ConcatenateScalarEvaluatorFactory.java
>>
>> Thank you.
>>
>> Yours sincerely,
>> Riyafa
>>
>> --
>> Riyafa Abdul Hameed
>> Undergraduate, University of Moratuwa
>>
>> Email: [email protected]
>> Website: https://riyafa.wordpress.com/ <http://riyafa.wordpress.com/>
>> <http://facebook.com/riyafa.ahf> <http://lk.linkedin.com/in/riyafa>
>> <http://twitter.com/Riyafa1>
>>
>
--
Riyafa Abdul Hameed
Undergraduate, University of Moratuwa
Email: [email protected]
Website: https://riyafa.wordpress.com/ <http://riyafa.wordpress.com/>
<http://facebook.com/riyafa.ahf> <http://lk.linkedin.com/in/riyafa>
<http://twitter.com/Riyafa1>
