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Expressions are a very powerful feature in Mule ESB 3.3. Implementing business logic, expressions dynamically adapt the routing, filtering, and transformation elements in Mule at runtime based on the content of the message payload. In Mule ESB 3.3, we have unified the use of expressions and now provide a common syntax: the Mule Expression Language (MEL). Whether you are accessing message properties, performing xpath expressions or accessing context information, you can use Mule Expression Language to get the job done. Note that expressions are backward compatible and all expression languages supported in Mule ESB 3.2 are supported in Mule ESB 3.3 as well. |
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