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Name | Default Value | Type | Description |
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languageName
| null
| String
| The name of the Language to use, such as simple , groovy , javascript etc. This option is mandatory. | script
| null
| String
| The script to execute. | transform
| true
| boolean
| Whether or not the result of the script should be used as the new message body. By setting to false the script is executed but the result of the script is discarded. | contentCache
| true
| boolean
| Camel 2.9: Whether to cache the script if loaded from a resource. Note: from Camel 2.10.3 a cached script can be forced to reload at runtime via JMX using the clearContentCache operation. | cacheScript
| false
| boolean
| Camel 2.13/2.12.2/2.11.3: Whether to cache the compiled script. Turning this option on can gain performance as the script is only compiled/created once, and reuse when processing Camel messages. But this may cause side-effects with data left from previous evaluation spills into the next, and concurrency issues as well. If the script being evaluated is idempotent then this option can be turned on. | binary
| false
| boolean
| Camel 2.14.1: Whether the script is binary content. This is intended to be used for loading resources using the Constant language, such as loading binary files. |
|
The following message headers can be used to affect the behavior of the component
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For example you can use the Simple language to Message Translator a message:
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{snippet:id=e1|lang=java|url=camel/trunk/camel-core/src/test/java/org/apache/camel/component/language/LanguageRouteTest.java} |
In case you want to convert the message body type you can do this as well:
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{snippet:id=e1|lang=java|url=camel/trunk/camel-core/src/test/java/org/apache/camel/component/language/LanguageRouteConvertBodyTest.java} |
You can also use the
Groovy language, such as this example where the input message will by multiplied with 2:
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{snippet:id=e1|lang=java|url=camel/trunk/components/camel-groovy/src/test/java/org/apache/camel/language/groovy/LanguageGroovyRouteTest.java} |
You can also provide the script as a header as shown below. Here we use
XPath language to extract the text from the
<foo>
tag.
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For example to load a script from the classpath:
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{snippet:id=e1|lang=java|url=camel/trunk/camel-core/src/test/java/org/apache/camel/component/language/LanguageLoadScriptFromClasspathTest.java} |
By default the script is loaded once and cached. However you can disable the
contentCache
option and have the script loaded on each evaluation.
For example if the file myscript.txt is changed on disk, then the updated script is used:
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{snippet:id=e1|lang=java|url=camel/trunk/camel-core/src/test/java/org/apache/camel/component/language/LanguageLoadScriptFromFileUpdateTest.java} |
From
Camel 2.11 onwards you can refer to the resource similar to the other
Languages in Camel by prefixing with
"resource:"
as shown below:
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{snippet:id=e1|lang=java|url=camel/trunk/camel-core/src/test/java/org/apache/camel/component/language/LanguageResourceLoadScriptFromClasspathTest.java} |
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