[daisy] [JIRA] Updated: (DSY-521) database indepent implementation of Concat() function

[Bruno Dumon (JIRA)]

     [ http://issues.cocoondev.org//browse/DSY-521?page=all ]

Bruno Dumon updated DSY-521:
----------------------------

    Component: Repository - database support
                   (was: Repository)
                   (was: Repository - querying and indexing)

> database indepent implementation of Concat() function
> -----------------------------------------------------
>
>          Key: DSY-521
>          URL: http://issues.cocoondev.org//browse/DSY-521
>      Project: Daisy
>         Type: Improvement
>   Components: Repository - database support
>     Versions: 2.1
>  Environment: SVN 4286
>     Reporter: Andreas Deininger
>     Priority: Minor

>
> Currently, the implementation of the Concat() function of daisy's query language depends on the existence of the SQL string function CONCAT(). However, this MySQL-specific SQL-function is implemented differently on other databases, e.g. on PostgreSQL, we have the || operator for string concatenation (string1 || string2 ). Therefore, the Implementation of that function should be made more flexible, the current solution does not allow to easily pass the || operator via the getStringConcatFunction() of the JdbcHelper class.
> Affected files: org/outerj/daisy/query/model/functions/ConcatFunction.java, org/outerj/daisy/jdbcutil/JdbcHelper.java

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