at:tutorial:distribution
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at:tutorial:distribution [2007/06/19 16:09] – tvcutsem | at:tutorial:distribution [2007/06/19 16:09] – tvcutsem | ||
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- | When an object its exported by its actor, it becomes discoverable by other actors by means of the service type. Internally, this means that the object is placed in the export table of its actor. As shown in the example, a service type is represented by a type tag. This means that services types are not associated with a set of methods, but they denote an abstract publication topic that objects exports. As a type tag, a service type can thus be a subtype of one or more other service types. For example, an object could offer a color printing services by exporting the following | + | When an object its exported by its actor, it becomes discoverable by other actors by means of the service type. Internally, this means that the object is placed in the export table of its actor. As shown in the example, a service type is represented by a type tag. This means that services types are not associated with a set of methods, but they denote an abstract publication topic that objects exports. As a type tag, a service type can thus be a subtype of one or more other service types. For example, an object could offer a color printing services by exporting the following |
< | < | ||
deftype ColorPrinter <: Printer; | deftype ColorPrinter <: Printer; |
at/tutorial/distribution.txt · Last modified: 2009/01/30 16:13 by tvcutsem