Hi Dilini,
Thank you very much for the detailed explanation. Yes, I can do that in ESB
layer and send the concatenated string to CEP.
Thanks,
Raj.
On Tue, Jun 14, 2016 at 4:02 PM, Dilini Muthumala <dil...@wso2.com> wrote:
> Hi Raj,
>
> When Siddhi Compiler Tokenize a String Literal (like "t\"est" ),
> AFAIK it does not escape characters when seeing '\'. So it will read '\'
> character as just another character.
> So adding an escape character will not work.
>
> Also the Siddhi Grammar does not allow a String Literal to contain a quote
> character (' " ' or ' ' ')
> If we put such a character, the query compilation will fail.
>
> For example,
> Following query compilation will fail because "pa\"rt1" contains ' " '
> character. ('\' character will be read as a part of the String Literal)
>
>
> //---------------------------------------------------------------------------------------------------------
> from inputStream
> select symbol1 , str:concat("pa\"rt1","part2") as concatString
> insert into outputStream;
>
> //---------------------------------------------------------------------------------------------------------
>
> However,
> concat function *can* process String Literals with quotes.
> So, if you somehow send a String Literal (with quotes) to the Concat
> function, then concat function has no issue with processing it.
>
> For example, following query compilation will be successful,
>
> //---------------------------------------------------------------------------------------------------------
> define stream inputStream (symbol1 string, symbol2 string);
>
> @info(name = 'query1')
> from inputStream
> select str:concat(symbol1,symbol2) as concatString
> insert into outputStream;
>
> //---------------------------------------------------------------------------------------------------------
>
> and if you send an inputStream event:
> symbol1=AAA
> symbol2=B"B
>
> You will get the result (concatString):
> AAAB"B
>
> Thanks,
> Dilini
>
> On Tue, Jun 14, 2016 at 2:54 PM, Rajkumar Rajaratnam <rajkum...@wso2.com>
> wrote:
>
>> Hi,
>>
>> $Subject please. Escaping character doesn't seems to be working.
>>
>> Thanks,
>> Raj.
>>
>> --
>> Rajkumar Rajaratnam
>> Committer & PMC Member, Apache Stratos
>> Senior Software Engineer, WSO2
>>
>> Mobile : +94777568639
>>
>> _______________________________________________
>> Dev mailing list
>> Dev@wso2.org
>> http://wso2.org/cgi-bin/mailman/listinfo/dev
>>
>>
>
>
> --
> *Dilini Muthumala*
> Senior Software Engineer,
> WSO2 Inc.
>
> *E-mail :* dil...@wso2.com
> *Mobile: *+94 713-400-029
>
--
Rajkumar Rajaratnam
Committer & PMC Member, Apache Stratos
Senior Software Engineer, WSO2
Mobile : +94777568639
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