Starting in model world (Configuration/ResolvedModule) is right and you first
need to find the Configuration containing the moduleX that moduleY reads, this
should do it:
Yes, I understand it, I sent a piece of real application code, so it was a
little different.
Once you have the Configuration then you need to find the ModuleLayer that was
reifed from that Configuration, this should do it:
ModuleLayer layer = layerC.parents().stream()
.filter(l -> l.configuration() == cf)
.findAny()
.orElseThrow();
Can you try it?
Yes, it worked. Thank you very much for your help. I didn't understand that we
could map layer and modules of this layer by configuration.
So I just created Map where as a key I used the configuration of all layers and
after that
for (var readModule : m.reads()) {
var layer = moduleLayersByConfiguration.get(readModule.configuration());
}
Several notes:
1. Your code `ModuleLayer layer = layerC.parents().stream()...` didn't find
layer if moduleX was in boot layer, but not in direct parents of layerC. In our
example 4
layers:
1) boot
2) layerA (parent - boot) has moduleX
3) layerB (parent - boot) has moduleX
4) layerC (parents - layerA, layerB) has moduleY
2. Please see this diagram https://i.stack.imgur.com/ss2os.png that was
generated for real application using reads and ResolvedModules (the topic of
this thread).
Here we have two layers - the right is a boot layer and the left is a webserver
layer. The program must show reads of com.google.gson. Reads are shown using
dashed arrows.
a) we see that gson reads 5 modules. At the same time gson requires only 1
module:
module com.google.gson {
exports com.google.gson;
exports com.google.gson.annotations;
exports com.google.gson.reflect;
exports com.google.gson.stream;
requires transitive java.sql;
}
Do I understand it correctly that extra 4 modules are read via java.sql?
3. Do I understand it correctly if some explicit module (with module-info) from
webserver layer will require any automatic module from webserver layer then
this explicit
module will read ALL automatic modules from both layers?
Best regards, Pavel
