Hi
You can look in the source of camel-attachments and see how they are
stored and then do it by checking for exchange property
key CamelAttachmentObjects exists and is not empty
On Tue, Nov 14, 2023 at 9:21 PM ski n <raymondmees...@gmail.com> wrote:
> 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 <raymondmees...@gmail.com> 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
> >
> >
>
--
Claus Ibsen
-----------------
@davsclaus
Camel in Action 2: https://www.manning.com/ibsen2
