Camel Components

ExchangeProperty

Since Camel 2.0

The ExchangeProperty Expression Language allows you to extract values of named exchange properties.

Exchange Property Options

The ExchangeProperty language supports the following options which are listed below.

Name Default Java Type Description

trim (advanced)

true

Boolean

Whether to trim the source code to remove leading and trailing whitespaces and line breaks.

resolveResource (advanced)

false

Boolean

Whether a result of the expression that is a String starting with resource: is loaded as a resource and its content becomes the result, e.g. a script that returns resource:file:order.json or resource:classpath:templates/order.json (a name without a scheme is a classpath resource). Off by default; the resource: prefix on the expression text itself is always resolved. Applies to the expression used as a value, not as a predicate.

Example

The recipientList EIP can utilize a exchangeProperty like:

  • Java

  • XML

  • YAML

from("direct:a").recipientList(exchangeProperty("myProperty"));
<route>
  <from uri="direct:a" />
  <recipientList>
    <exchangeProperty>myProperty</exchangeProperty>
  </recipientList>
</route>
- route:
    from:
      uri: direct:a
      steps:
        - recipientList:
            expression:
              exchangeProperty:
                expression: myProperty

In this case, the list of recipients are contained in the property 'myProperty'.

Dependencies

The ExchangeProperty language is part of camel-core.