The execution layer sends the XML request to the XAI core server and waits for a response.
The executer is invoked and is passed in an XAI Inbound Service that specifies an XML request schema and an adapter. Adapters tell XAI what to do with a request. The adapters point to a specific Java class that renders a service.
For example you can configure an Adapter to invoke any published application object (by pointing it to the appropriate java class). This adapter accesses system objects through the page service. You can think of an adapter as a plug-in component.
Once the executer processes the request and a response is received, it is transferred to the next layer, the response layer.
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