ascheman commented on code in PR #11702:
URL: https://github.com/apache/maven/pull/11702#discussion_r2828296289
##########
impl/maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuilder.java:
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@@ -692,49 +692,102 @@ private void initProject(MavenProject project,
ModelBuilderResult result) {
}
/*
- * `sourceDirectory`, `testSourceDirectory` and
`scriptSourceDirectory`
- * are ignored if the POM file contains at least one enabled
<source> element
- * for the corresponding scope and language. This rule exists
because
- * Maven provides default values for those elements which may
conflict
- * with user's configuration.
- *
- * Additionally, for modular projects, legacy directories are
unconditionally
- * ignored because it is not clear how to dispatch their
content between
- * different modules. A warning is emitted if these properties
are explicitly set.
- */
- if (!sourceContext.hasSources(Language.SCRIPT,
ProjectScope.MAIN)) {
+ Source directory handling depends on project type and
<sources> configuration:
+
+ 1. CLASSIC projects (no <sources>):
+ - All legacy directories are used
+
+ 2. MODULAR projects (have <module> in <sources>):
+ - ALL legacy directories are rejected (cannot dispatch
between modules)
+ - Physical presence of default directories
(src/main/java) also triggers ERROR
Review Comment:
Fixed in eb41bc90d3. The comment now reads "The build also fails if default
directories (src/main/java) physically exist on the filesystem".
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