John Patrick created MCOMPILER-421:
--------------------------------------
Summary: multi release jar issue with module-info.java when using
provides
Key: MCOMPILER-421
URL: https://issues.apache.org/jira/browse/MCOMPILER-421
Project: Maven Compiler Plugin
Issue Type: Improvement
Affects Versions: 3.8.1
Reporter: John Patrick
If you have the following structure you have to recompile everything for each
version supported.
If you have the following code;
{code}
src/main/java/package/Service.java (1)
src/main/java/package/Example.java (2)
src/main/java/package/Java1dot8.java (3)
src/main/java11/package/Example.java (4)
src/main/java11/package/Java11.java (5)
src/main/java11/module-info.java (6)
src/main/java14/package/Example.java (7)
src/main/java14/package/Java14.java (8)
src/main/java14/module-info.java (9)
{code}
I expect the following jar structure;
{code}
package/Service.class (1)
package/Example.class (2)
package/Java1dot8.class (3)
META-INF/versions/11/package/Example.java (4)
META-INF/versions/11/package/Java11.java (5)
META-INF/versions/11/module-info.java (6)
META-INF/versions/14/package/Example.java (7)
META-INF/versions/14/package/Java14.java (8)
META-INF/versions/14/module-info.java (9)
{code}
Using the following maven configuration;
{code}
<executions>
<execution>
<id>java11-main</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<release>11</release>
<jdkToolchain>
<version>11</version>
</jdkToolchain>
<compileSourceRoots>
<compileSourceRoot>${project.basedir}/src/main/java11</compileSourceRoot>
</compileSourceRoots>
<multiReleaseOutput>true</multiReleaseOutput>
</configuration>
</execution>
<execution>
<id>java14-main</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<release>14</release>
<jdkToolchain>
<version>14</version>
</jdkToolchain>
<compileSourceRoots>
<compileSourceRoot>${project.basedir}/src/main/java14</compileSourceRoot>
</compileSourceRoots>
<multiReleaseOutput>true</multiReleaseOutput>
</configuration>
</execution>
</executions>
{code}
But due to needing to use provides and uses in the module-info.java
{code}
module MODULE_A {
exports PACKAGE_A;
uses PACKAGE_B.Service;
provides PACKAGE_B.Service
with PACKAGE_A.ServiceImpl;
}
{code}
I get compile errors with src/main/java11/module-info.java as that class is
under src/main/java. So I need to change it to something like this so the
compile see classes already compiled that are in target/classes;
{code}
<executions>
<execution>
<id>java11-main</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<release>11</release>
<jdkToolchain>
<version>11</version>
</jdkToolchain>
<compileSourceRoots>
<compileSourceRoot>${project.basedir}/src/main/java</compileSourceRoot>
<compileSourceRoot>${project.basedir}/src/main/java11</compileSourceRoot>
</compileSourceRoots>
<multiReleaseOutput>true</multiReleaseOutput>
</configuration>
</execution>
<execution>
<id>java14-main</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
<configuration>
<release>14</release>
<jdkToolchain>
<version>14</version>
</jdkToolchain>
<compileSourceRoots>
<compileSourceRoot>${project.basedir}/src/main/java</compileSourceRoot>
<compileSourceRoot>${project.basedir}/src/main/java11</compileSourceRoot>
<compileSourceRoot>${project.basedir}/src/main/java14</compileSourceRoot>
</compileSourceRoots>
<multiReleaseOutput>true</multiReleaseOutput>
</configuration>
</execution>
</executions>
{code}
Which then produces a jar looking something like this;
{code}
package/Service.class (1)
package/Example.class (2)
package/Java1dot8.class (3)
META-INF/versions/11/package/Java1dot8.class (3)
META-INF/versions/11/package/Example.java (4)
META-INF/versions/11/package/Java11.java (5)
META-INF/versions/11/module-info.java (6)
META-INF/versions/14/package/Java1dot8.class (3)
META-INF/versions/14/package/Java11.java (5)
META-INF/versions/14/package/Example.java (7)
META-INF/versions/14/package/Java14.java (8)
META-INF/versions/14/module-info.java (9)
{code}
One of the projects that needs this is
https://github.com/nhojpatrick/nhojpatrick-cucumber/tree/feature/surefire-3.0.0-M5
The actual module-info.java using provides is
https://github.com/nhojpatrick/nhojpatrick-cucumber/blob/feature/surefire-3.0.0-M5/json-transformations/remove/src/main/java11/module-info.java
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