eclipse-xtext / eclipse-xtext/xtext

[Xbase] Xcore-Java-Changes are not considered as derived by DeltaConverter

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bug confirmed
Dominant language
Java
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Avg merge
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Merged PRs (30d)
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Description

[Xbase] Xcore-Java-Changes are not considered as derived by DeltaConverter
cause the xcore file is inside the model folder and not a source folder
and thus not a visible container.

see org.eclipse.xtext.common.types.ui.notification.DeltaConverter.isDerived(String, IJavaProject)

this leads to the xtext builder seeing java changes it caused itself.
=> it will be built at least twice.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with org.eclipse.xtext.common.types.ui.notification.DeltaConverter.isDerived(String, IJavaProject) and inspect how the model folder is handled when Xcore-Java changes are classified. Verify the Xtext builder no longer treats generated Java changes as new source changes and rebuilds them twice.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
build-system
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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