How to pass properties between endpoints...

[apara <ap...@standardset.com>]

Before converting the event to JSON, I would like to store some variables
from the event and later use them in a to: destination.

So, am using header to stash away the values prior to conversion.  Is this
the best way of doing this, or should I be using properties?

        <camel:route>
            ...
            
            <camel:setHeader headerName="userId">
                <camel:simple
resultType="java.lang.Integer">${body.userId}</camel:simple>
            </camel:setHeader>

            <camel:setHeader headerName="eventName">
                <camel:simple
resultType="java.lang.String">${body.class.simpleName}</camel:simple>
            </camel:setHeader>

            <camel:marshal>
                <camel:json library="Jackson"/>
            </camel:marshal>

            <camel:convertBodyTo type="java.lang.String" />

            <camel:to
uri="bean:drupalRestService?method=notifyEvent(${in.header.userId},
${in.header.eventName}, ${body})" />

        </camel:route>

However, when I try to use the properties, I always a runtime exception
telling me that a PropertiesComponent needs to be defined inside of the
camel context.  However, I am not sure how to create a properties component
inside of the camel context.  I tried with just <properties/> but that did
not quite do the trick.

Any clues?

Thanks.
-AP_





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Re: How to pass properties between endpoints...

[Claus Ibsen <cl...@gmail.com>]

There is 2 kind of properties with Camel

- properties on Exchange
- property placeholder

They are very different. You can find details on the Camel doc if you
search a bit and read.


On Mon, Sep 2, 2013 at 4:06 AM, apara <ap...@standardset.com> wrote:
> Before converting the event to JSON, I would like to store some variables
> from the event and later use them in a to: destination.
>
> So, am using header to stash away the values prior to conversion.  Is this
> the best way of doing this, or should I be using properties?
>
>         <camel:route>
>             ...
>
>             <camel:setHeader headerName="userId">
>                 <camel:simple
> resultType="java.lang.Integer">${body.userId}</camel:simple>
>             </camel:setHeader>
>
>             <camel:setHeader headerName="eventName">
>                 <camel:simple
> resultType="java.lang.String">${body.class.simpleName}</camel:simple>
>             </camel:setHeader>
>
>             <camel:marshal>
>                 <camel:json library="Jackson"/>
>             </camel:marshal>
>
>             <camel:convertBodyTo type="java.lang.String" />
>
>             <camel:to
> uri="bean:drupalRestService?method=notifyEvent(${in.header.userId},
> ${in.header.eventName}, ${body})" />
>
>         </camel:route>
>
> However, when I try to use the properties, I always a runtime exception
> telling me that a PropertiesComponent needs to be defined inside of the
> camel context.  However, I am not sure how to create a properties component
> inside of the camel context.  I tried with just <properties/> but that did
> not quite do the trick.
>
> Any clues?
>
> Thanks.
> -AP_
>
>
>
>
>
> --
> View this message in context: http://camel.465427.n5.nabble.com/How-to-pass-properties-between-endpoints-tp5738449.html
> Sent from the Camel - Users mailing list archive at Nabble.com.



-- 
Claus Ibsen
-----------------
Red Hat, Inc.
Email: cibsen@redhat.com
Twitter: davsclaus
Blog: http://davsclaus.com
Author of Camel in Action: http://www.manning.com/ibsen