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Category:Elena: Difference between revisions
→Overview
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The main way to interact with objects in ELENA is sending a message. The message name is structured and consists of a verb, a signature and a parameter counter. The verb defines a message action, for example read or write some data. There are only limited set of possible verbs. The signature is user defined and describes the message parameters. If the signature is not provided the message is considered to be generic and can be qualified (by dispatching).
If the object wants to handle the message it has to contain the method with the same name. If no method mapping was found the flow is considered to be broken and the control goes to the next alternative flow (exception handler) or the program is stopped. It is possible to declare generic handler which will be called for all incoming messages.
== Namespaces ==
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