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From "Claus Ibsen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAMEL-4350) Camel-jdbc with List<Map> has arbitrary column order
Date Fri, 19 Aug 2011 08:50:27 GMT

    [ https://issues.apache.org/jira/browse/CAMEL-4350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13087615#comment-13087615
] 

Claus Ibsen commented on CAMEL-4350:
------------------------------------

By fixing it in camel-jdbc and camel-sql the order of the List<Map> is as the ResultSet
have returned. And thus marshalling to csv will be in the same order as well.

> Camel-jdbc with List<Map> has arbitrary column order
> ----------------------------------------------------
>
>                 Key: CAMEL-4350
>                 URL: https://issues.apache.org/jira/browse/CAMEL-4350
>             Project: Camel
>          Issue Type: Improvement
>          Components: camel-jdbc, camel-sql
>    Affects Versions: 2.7.1
>         Environment: java 1.6
>            Reporter: Julian Cable
>            Priority: Minor
>             Fix For: 2.9.0
>
>
> The following route works but the order of the columns is dependent on the natural ordering
of the hashmap. Target systems will have an expectation of the order of the data. 
> <route>
>   <from uri="jetty:http://0.0.0.0:16081/css/mes"/>
>   <setBody>
>     <constant>SELECT id, value1, value2 FROM mytable</constant> 
>   </setBody>
>   <to uri="jdbc:mydb"/>
>   <marshal>
>     <csv/>
>   </marshal>
>  </route>
> Either there needs to be a property for csv that allows hash key ordering to be specified,
or an option to sort the keys, e.g.
> <route>
>   <from uri="jetty:http://0.0.0.0:16081/css/mes"/>
>   <setBody>
>     <constant>SELECT id as col1, value1 as col2, value2 as col3 FROM mytable</constant>

>   </setBody>
>   <to uri="jdbc:mydb"/>
>   <marshal>
>     <csv sortFields="true" />
>   </marshal>
>  </route>

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