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Improve messaging gateway mapping

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The `#args` and `#gatewayMethod` SpEL variables have been deprecated for a while

* Remove their population and usage in favor of `MethodArgsHolder` `root` of the evaluation context
This change optimize a gateway mapping logic the way that there is no need in evaluation context
for every call: we can just reuse a global one
* Some other `GatewayMethodInboundMessageMapper` code style refactoring
* Fix effected test classes and their configs
This commit is contained in:
Artem Bilan
2022-10-06 14:26:38 -04:00
committed by Gary Russell
parent a9f511c170
commit a30dc10447
13 changed files with 105 additions and 122 deletions
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8
src/reference/asciidoc/gateway.adoc
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@@ -163,13 +163,7 @@ NOTE: If a no-argument gateway is specified in XML, and the interface method has
The `<header/>` element supports `expression` as an alternative to `value`.
The SpEL expression is evaluated to determine the value of the header.
Starting with version 5.2, the `#root` object of the evaluation context is a `MethodArgsHolder` with `getMethod()` and `getArgs()` accessors.
These two expression evaluation context variables are deprecated since version 5.2:
* #args: An `Object[]` containing the method arguments
* #gatewayMethod: The object (derived from `java.reflect.Method`) that represents the method in the `service-interface` that was invoked.
A header containing this variable can be used later in the flow (for example, for routing).
For example, if you wish to route on the simple method name, you might add a header with the following expression: `#gatewayMethod.name`.
For example, if you wish to route on the simple method name, you might add a header with the following expression: `method.name`.
NOTE: The `java.reflect.Method` is not serializable.
A header with an expression of `method` is lost if you later serialize the message.