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DEVELOPMENT.md

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Concepts (open for discussion)

Requirements

  • Maven >= 3.3.1
  • Java >= 8

General

  • All modules should use only one primary build system
  • It should be super-easy for new contributors to get started (A new contributor should be able to checkout and build with a core testsuite with a simple: 'mvn package' run)
  • New code should only be accepted, if there are tests (Currently the java part of the build is configured to fail if the code coverage is below 90%)

Java Specific

  • Development should be done in Java >=9
  • Providing Java 7 compatible versions should be possible by using the retrolambda plugin
    • Usage of default implementations does cause more problems than it solves in this case.

IDE specific

  • For formatting there is a .editorconfig defined. Intellij Idea come with a plugin for this pre-installed, for eclipse an installation is required (http://editorconfig.org/).
  • Import organizing uses the Intellij Idea default:
    • Import order
      • all other imports
      • blank
      • import javax.*
      • import java.*
      • blank
      • all other static imports
    • Star imports
      • number of imports needed for .* = 5
      • number of static-imports needed for .* = 3