[ 
https://issues.apache.org/jira/browse/CAMEL-10542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15713012#comment-15713012
 ] 

Luca Burgazzoli commented on CAMEL-10542:
-----------------------------------------

I was thinking about a real factory that can create an instance of a 
dataformat, like what you can achieve by annotate a method with prototype scope 
in spring

> DataFormat from registry is used for every dataformat operation 
> (marshal/unmarshal)
> -----------------------------------------------------------------------------------
>
>                 Key: CAMEL-10542
>                 URL: https://issues.apache.org/jira/browse/CAMEL-10542
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-core
>            Reporter: Luca Burgazzoli
>            Assignee: Luca Burgazzoli
>             Fix For: 2.18.2, 2.19.0
>
>
> While working on an issue related to spring-boot I found out that if a data 
> format is registered in camel registry with the same name as the one camel 
> looks-up with the help of DefaultDataFormatResolver, this object is then 
> re-configured for each data format definition so one definition may override 
> previous configuration with an undefined behavior.
> So assume you have an xml route definitions as:
> {code:xml}
> <routes xmlns="http://camel.apache.org/schema/spring";>
>   <route>
>     <from uri="direct:unmarshal"/>
>     <unmarshal>
>       <csv delimiter=";" headerDisabled="true"/>
>     </unmarshal>
>   </route>
>   <route>
>     <from uri="direct:marshal"/>
>     <marshal>
>       <csv headerDisabled="true" quoteDisabled="true"/>
>     </marshal>
>   </route>
> </routes>
> {code}
> And some code like:
> {code:java}
> InputStream is = getClass().getResourceAsStream("...");
> SimpleRegistry reg = new SimpleRegistry();
> reg.put("csv-dataformat", new CsvDataFormat());
> DefaultCamelContext ctx = new DefaultCamelContext(reg);
> ctx.addRouteDefinitions(ctx.loadRoutesDefinition(is).getRoutes());
> ctx.start();
> ProducerTemplate template = ctx.createProducerTemplate();
> String result = template.requestBody(
>     "direct:marshal",
>     Arrays.asList(Arrays.asList( "A1", "B1", "C1" )),
>     String.class);
> assertEquals("A1,B1,C1", result);
> ctx.stop
> {code}
> Then this test fails with:
> {code}
> Expected :A1,B1,C1
> Actual   :A1;B1;C1
> {code}
> It fails because the object added to the SimpleRegistry is shared among the 
> two csv dataformats  so it is configured to have delimiter = ';' 
> For spring-boot this causes some issues as it registers data formats beans as 
> part of its auto-configuration magic thus if you do not set your own instance 
> of data format, any data format operation like marshal/unmarshal may not work 
> as expected. 
> - for spring-boot a solution would be to annotate auto configured data format 
> beans with prototype scope.
> - a more generic solution would be to make DataFormat Cloneable and clone the 
> bean found in the registry



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Reply via email to