Groovy is a Java-based scripting language that allows quick parsing of
object. The Groovy support is part of the camel-script module.
To use Groovy in your routes you need to add a dependency on
camel-script to your project as shown in
Example 5.1.
Example 5.1. Adding the camel-script dependency
<!-- Maven POM File -->
<properties>
<camel-version>2.8.0-fuse-00-08</camel-version>
...
</properties>
<dependencies>
...
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-script</artifactId>
<version>${camel-version}</version>
</dependency>
...
</dependencies>Table 5.1 lists the built-in attributes that are accessible when using Groovy.
Table 5.1. Groovy attributes
| Attribute | Type | Value |
|---|---|---|
context | org.apache.camel.CamelContext | The Camel Context |
exchange | org.apache.camel.Exchange | The current Exchange |
request | org.apache.camel.Message | The IN message |
response | org.apache.camel.Message | The OUT message |
The attributes all set at ENGINE_SCOPE.
Example 5.2 shows two routes that use Groovy scripts.
Example 5.2. Routes using Groovy
<camelContext>
<route>
<from uri=""mock:mock0" />
<filter>
<language language="groovy">request.lineItems.any { i -> i.value > 100 }</language>
<to uri="mock:mock1" />
</filter>
</route>
<route>
<from uri="direct:in"/>
<setHeader headerName="firstName">
<expression language="groovy">$user.firstName $user.lastName</expression>
</setHeader>
<to uri="seda:users"/>
</route>
</camelContext> |  | |
 |
