[jira] [Updated] (CAMEL-11716) error in handling return parameters in db functions

["Andrea Cosentino (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-11716?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrea Cosentino updated CAMEL-11716:
-------------------------------------
    Affects Version/s: 2.19.1

> error in handling return parameters in db functions
> ---------------------------------------------------
>
>                 Key: CAMEL-11716
>                 URL: https://issues.apache.org/jira/browse/CAMEL-11716
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-sql
>    Affects Versions: 2.19.1
>            Reporter: Andrea Tarocchi
>            Assignee: Andrea Cosentino
>             Fix For: 2.18.5, 2.20.0, 2.19.3
>
>
> Let's consider for instance the following db function:
> {code}
> create or replace function sum_two_numbers_function
>   (a in number, b in number)
> return number deterministic is
> begin
>  return a + b;
> end;
> {code}
> One might think to run this camel route in order to call the mentioned db function:
> {code}
> sql-store:sum_two_numbers_function(INTEGER ${body[0]}, INTEGER ${body[1]})?function=true
> {code}
> but SqlCall build incorect query:
> {code}
> ? = call sum_two_numbers_function(?)
> {code}
> which fail on wrong number of arguments. After an investigation is found out that first parameter was skipped for function calls.
> https://github.com/spring-projects/spring-framework/blob/v4.3.3.RELEASE/spring-jdbc/src/main/java/org/springframework/jdbc/object/SqlCall.java#L135
> So one might try to add one parameter which should be used as output for return statement. But the only valid format of parameter (for db functions) seems to be {{InputParameter}} which is not possible to use as output for result.
> {code}
> sql-store:sum_two_numbers_function(INTEGER ${body[2]}, INTEGER ${body[0]}, INTEGER ${body[1]})?function=true
> {code}
> If {{OutputParameter}} are used than this https://github.com/apache/camel/blob/master/components/camel-sql/src/main/java/org/apache/camel/component/sql/stored/TemplateStoredProcedure.java#L77 will force to create SQL procedure call (instead of a function one), for instance this:
> {code}
> sql-store:sum_two_numbers_function(OUT INTEGER result, INTEGER ${body[0]}, INTEGER ${body[1]})?function=true
> {code}
> results in this query call:
> {code}
> call sum_two_numbers_function(?, ?, ?)
> {code}



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