[CONF] Apache Camel: StringTemplate (page edited)

confluence Thu, 05 Jun 2008 12:34:33 -0700

Page Edited : CAMEL : StringTemplate

StringTemplate has been edited by Claus Ibsen (Jun 05, 2008).

Content:

String Template

The string-template: component allows you to process a message using a String Template. This can be ideal when using Templating to generate responses for requests.

URI format

string-template:templateName

Where templateName is the classpath-local URI of the template to invoke; or the complete URL of the remote template.

Options

Option	Default	Description
contentCache	false	New option in Camel 1.4. Cache for the resource content when its loaded.

Headers

Camel will store a reference to the resource in the message header in the key org.apache.camel.stringtemplate.resource. The Resource is an org.springframework.core.io.Resource object.

Hot reloading

The stringtemplate resource is by default hot reloadable for both file and classpath resources (expanded jar). Setting the contentCache=true then Camel will only load the resource once, and thus hot reloading is not possible. This scenario can be used in production usage when the resource never changes.

Samples

For example you could use something like

from("activemq:My.Queue").
  to("string-template:com/acme/MyResponse.tm");

To use a string template to formulate a response for a message