Refine D2D with Xtend and Class Mapping #1906

[chinyeungli]

Fix for #1906

Support mapping .class to their corresponding .xtend files.

The reported .class is now mapped with the corresponding .xtend

Map type is xtend_to_class

[TG1999]

Should extend be an optional step or be part of all JVM based languages like Scala, Java and Kotlin ?

[chinyeungli]

aren't the code for Java, Scala and Koltin also treat as an optional step

scancode.io/scanpipe/pipelines/deploy_to_develop.py

Line 180 in f668786

@optional_step("Java")

scancode.io/scanpipe/pipelines/deploy_to_develop.py

Line 201 in f668786

@optional_step("Scala")

scancode.io/scanpipe/pipelines/deploy_to_develop.py

Line 222 in f668786

@optional_step("Kotlin")

[TG1999]

Yes, they are. Coz they all are independent of each other. We won't run the same thing for Scala that we are running for Java. But if we are running same things then it wouldn't have been a separate optional step.

[chinyeungli]

Here is the background.

Xtend is a flexible and expressive dialect of Java (https://eclipse.dev/Xtext/xtend/)
It compiles .xtend files into readable .java source code, which is then compiled into JVM bytecode (.class files).
Xtend uses a source-to-source compiler, meaning it translates Xtend code into Java before passing it to a standard Java compiler.

There are couple ways to compile .xtend such as

Maven

mvn compile

OR

Gradle

gradle build

Xtend plugin will generate .java files for the above

OR

Eclipse IDE

Just save the .xtend file (Eclipse automatically generates the corresponding .java file)