There is some confusion (at least, I perceive there to be) over the purpose of the two
source directories in the structure of projects created by seam-gen and how they relate to
XML component configuration (via components.xml).
The two source directories are:
model
action
The names are slightly misleading. Here is an overview.
The model directory is treated as static. This means that once the application gets going,
component definitions from the resulting classpath entry (WEB-INF/classes) remain in tact
throughout the application's lifetime. (Read as: they are not hot redeployed).
The action directory is treated as dynamic. This means that if a change is detected in the
classpath entry (a new version of a class appears in WEB-INF/dev), all the component
definitions that originated from that directory are removed and it is rescanned for
components. (Read as: they are hot redeployed).
The hot redeployable directory is an isolated, URL classloader. No classes or other
classloaders can see these classes. That means that you cannot put a class in this
directory and then define it as a component using XML in components.xml because the
classloader that processes those definitions cannot see the classes in the hot
redeployable directory.
I now arrive at my point, a call for change. I feel that "model" and
"action" names are ill-suited for their purpose. Here is my proposal:
model -> static
action -> dynamic
other options include:
model -> standard
action -> dynamic or hot
model -> main
action -> redeployable
This change would affect projects created by seam-gen.
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