As a workaround, I implemented it as follows:
public class MyBean {
public boolean hasAttachements(Exchange exchange) {
return exchange.getIn(AttachmentMessage.class).hasAttachments();
}
}
And then call it from the Java DSL as:
<method beanType="org.assimbly.attachement.MyBean"
method="hasAttachements"/>
If there are better solution, I like to hear it.
Raymond
On Tue, Nov 14, 2023 at 8:12 PM ski n <[email protected]> wrote:
>
> I need to check if a message has an attachment.
>
> In Camel2 I used the following expression:
>
> <simple>${exchange.getIn().hasAttachments}</simple>
>
> As attachment was modularized in Camel 3, the hasAttachments method isn't
> directly available on the exchange anymore (it now extends Message).
>
> Based on the documentation:
>
> https://camel.apache.org/components/3.20.x/others/attachments.html
>
> I tried:
>
> <simple>${exchange.getIn(AttachmentMessage.class).hasAttachments}</simple>
>
> Using Java code directly this works, but from the XML DSL this gives:
>
> org.apache.camel.component.bean.ParameterBindingException: Error during
> parameter binding on method: public abstract java.lang.Object
> org.apache.camel.Exchange.getIn(java.lang.Class) at parameter #0 with type:
> class java.lang.Class with value type: class java.lang.String and value:
> AttachmentMessage.class
>
> The parameter is seen as a String object, instead of AttachmentMessage
> object. How to properly pass the type parameter in the XML DSL with a
> simple expression? If there is an alternative way to check attachments this
> also fine, but I'm trying to avoid using processors or bean invocation
> though.
>
> Raymond
>
>
