Table 20 shows the namespace URIs that are associated with the various namespace prefixes.
Table 20. XPath Variable Namespaces
| Namespace URI | Prefix | Description |
|---|---|---|
http://camel.apache.org/schema/spring | None | Default namespace (associated with variables that have no namespace prefix). |
http://camel.apache.org/xml/in/ | in | Used to reference header or body of the current exchange's In message. |
http://camel.apache.org/xml/out/ | out | Used to reference header or body of the current exchange's Out message. |
http://camel.apache.org/xml/functions/ | functions | Used to reference some custom functions. |
http://camel.apache.org/xml/variables/environment-variables | env | Used to reference O/S environment variables. |
http://camel.apache.org/xml/variables/system-properties | system | Used to reference Java system properties. |
http://camel.apache.org/xml/variables/exchange-property | Undefined | Used to reference exchange properties. You must define your own prefix for this namespace. |
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