[CONF] Apache Camel: Mvel (page edited)

[confluence]

Page Edited : CAMEL : Mvel Mvel has been edited by Claus Ibsen (Jan 20, 2009). (View changes) Content: Mvel Avialable in Camel 2.0 Camel allows Mvel to be used as an _expression_ or Predicate the DSL or Xml Configuration. You could use Mvel to create an Predicate in a Message Filter or as an _expression_ for a Recipient List You can use Mvel dot notation to invoke operations. If you for instance have a body that contains a POJO that has a getFamiliyName method then you can construct the syntax as follows: "request.body.familyName" // or "getRequest().getBody().getFamilyName()" Variables Variable Type Description this Exchange the Exchange is the root object exchange Exchange the Exchange object exception Throwable the Exchange exception (if any) exchangeId String the exchange id fault Message the Fault message (if any) request Message the exchange.in message response Message the exchange.out message (if any) properties Map the exchange properties property(name) Object the property by the given name property(name, type) Type the property by the given name as the given type Samples For example you could use Mvel inside a Message Filter in XML <route> <from uri="seda:foo"/> <filter> <mvel>request.headers.foo = 'bar'</mvel> <to uri="seda:bar"/> </filter> </route> And the sample using Java DSL: from("seda:foo").filter().mvel("request.headers.foo = 'bar'").to("seda:bar"); Dependencies To use Mvel in your camel routes you need to add the a dependency on camel-mvel which implements the Mvel language. If you use maven you could just add the following to your pom.xml, substituting the version number for the latest & greatest release (see the download page for the latest versions). <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-mvel</artifactId> <version>2.0.0</version> </dependency>

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