Date: 2004-01-10T10:38:23
Editor: 160.33.82.119 <>
Wiki: Apache Avalon Wiki
Page: AvalonFAQ/ComponentVsService
URL: http://wiki.apache.org/avalon/AvalonFAQ/ComponentVsService
fixed formatting -farra
Change Log:
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@@ -4,11 +4,13 @@
[begin Avalon flash-back...]
-In the beginning there was the Excalibur Component Manager (ECM) which was a basic
Avalon container. All the components had to implement a marker interface named {{{
Component }}} This often made it difficult to migrate existing applications to
Avalon. So, an effort was made to update the framework to allow normal Java {{{
Objects }}} to be handed by a container, not just object which implemented the {{{
Component }}} interface.
+In the beginning there was the Excalibur Component Manager (ECM) which was a basic
Avalon container. All the components had to implement a marker interface named
Component This often made it difficult to migrate existing applications to Avalon.
So, an effort was made to update the framework to allow normal Java Objects to be
handed by a container, not just object which implemented the Component interface.
[fast-forward to today...]
-The {{{ { { { ServiceManager } } } }}} and {{{ Serviceable }}} interface allow newer
Avalon containers to handle normal Java Objects, not just Components. This is the
only real difference between a {{{ { { { ServiceManager } } } }}} and a {{{ { { {
ComponentManager } } } }}}. Consequently, the words "service" and "component" have
often been used interchangeably. Since the change, service has sometimes been used to
refer to the interface (or role) and component refer to the implementation, but in
general, the two terms mean the same thing.
+The ServiceManager and Serviceable interface allow newer Avalon containers to handle
normal Java Objects, not just Components. This is the only real difference between a
ServiceManager and a ComponentManager. Consequently, the words "service" and
"component" have often been used interchangeably. Since the change, service has
sometimes been used to refer to the interface (or role) and component refer to the
implementation, but in general, the two terms mean the same thing.
+
+For more information see the ContainerStory
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