Fix Amharic extraction common bugs by Nama21yo · Pull Request #846 · dbpedia/extraction-framework

Nama21yo · 2026-09-01T08:53:31Z

Summary

Fixes the Amharic extraction problems identified in #845:

correct Ethiopian-to-Gregorian year conversion
parse standard Amharic dates and observed month spellings
repair date-regex capture groups
extend language-specific ignored properties with the English baseline
suppress empty literal quads while preserving resource-valued output
recognize localized Amharic Module namespaces while retaining legacy aliases

Validation

Java 8 core test compilation: BUILD SUCCESS
focused JUnit regression suite: OK (15 tests)
Java 8 reactor package through server: exit code 0
git diff --check origin/master..HEAD

Closes #845

Summary by CodeRabbit

New Features
- Improved Ethiopian date recognition, including additional Amharic month spellings, day formats, Geez numerals, and era markers.
- Added support for localized Amharic Wikipedia namespace names, including Module and related namespaces.
- Expanded Amharic infobox handling for image, map, logo, flag, and stamp properties.
Bug Fixes
- Prevented empty values from being included in extracted data.
- Improved date conversion accuracy across Ethiopian and Gregorian calendar boundaries.

Correct Gregorian year selection, accept standard day and era markers, fix regex capture arity, and support observed month spellings.\n\nRefs dbpedia#845

Union language-specific ignored properties with the English defaults and extend the Amharic image and layout keys.\n\nRefs dbpedia#845

Skip blank infobox values and filter empty typed mapping literals while preserving resource-valued quads.\n\nRefs dbpedia#845

Add the current localized Module and Module talk aliases while retaining the English aliases used by older dumps.\n\nRefs dbpedia#845

coderabbitai · 2026-09-01T08:54:02Z

📝 Walkthrough

Walkthrough

The changes improve Amharic extraction. Ethiopian dates accept more spellings and markers and use corrected Gregorian conversion. Infobox extraction combines ignored-property sets and skips blank typed values. Amharic namespace aliases are expanded and tested.

Changes

Amharic extraction behavior

Layer / File(s)	Summary
Ethiopian date parsing `core/src/main/scala/org/dbpedia/extraction/config/dataparser/EthiopianDateParserConfig.scala`, `core/src/main/scala/org/dbpedia/extraction/dataparser/EthiopianDateParser.scala`, `core/src/test/scala/org/dbpedia/extraction/dataparser/EthiopianDateParserTest.scala`	The parser supports additional Amharic month spellings, day markers, and era markers. Regex alternatives are escaped and sorted by length. Gregorian year conversion uses the computed Gregorian month.
Infobox filtering and value cleanup `core/src/main/scala/org/dbpedia/extraction/config/mappings/InfoboxExtractorConfig.scala`, `core/src/main/scala/org/dbpedia/extraction/mappings/InfoboxExtractor.scala`, `core/src/main/scala/org/dbpedia/extraction/mappings/InfoboxReferencesExtractor.scala`, `core/src/main/scala/org/dbpedia/extraction/mappings/MappingExtractor.scala`, `core/src/test/scala/org/dbpedia/extraction/mappings/InfoboxExtractorConfigTest.scala`, `core/src/test/scala/org/dbpedia/extraction/mappings/MappingExtractorEmptyLiteralTest.scala`	Amharic ignored properties are combined with English defaults. Infobox filters use the resolved set. Blank typed values are excluded from generated quads.
Amharic namespace aliases `core/src/main/scala/org/dbpedia/extraction/wikiparser/impl/wikipedia/Namespaces.scala`, `core/src/test/scala/org/dbpedia/extraction/wikiparser/WikiTitleTest.scala`	The Amharic namespace map adds localized aliases, including `ሞጁል`. Tests verify localized and English module titles.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: 🟡 Moderate · up to 90856

The PR improves Amharic date and namespace extraction and suppresses blank typed values, but the current fallback behavior can omit valid child-derived data when a parent produces only blank values. The PR is not merge-ready until that extraction path is corrected or explicitly accepted.

Sequence Diagram(s)

sequenceDiagram
  participant DateParserConfig
  participant EthiopianDateParser
  participant GregorianConverter
  DateParserConfig->>EthiopianDateParser: Provide month and marker variants
  EthiopianDateParser->>EthiopianDateParser: Match date text and parse numerals
  EthiopianDateParser->>GregorianConverter: Convert using Gregorian month
  GregorianConverter-->>EthiopianDateParser: Return Gregorian date

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the primary change: fixing common Amharic extraction bugs.
Linked Issues check	✅ Passed	The changes address all seven objectives in issue `#845`: Ethiopian date conversion and parsing, date regex fixes, month spelling variants, ignored-property unioning, empty-literal suppression, and loca…
Out of Scope Changes check	✅ Passed	The code and test changes are directly related to issue `#845` and its shared extraction-framework requirements. No unrelated changes are present.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…

Full details: Linked Issues check

Explanation

The changes address all seven objectives in issue #845: Ethiopian date conversion and parsing, date regex fixes, month spelling variants, ignored-property unioning, empty-literal suppression, and localized Amharic Module namespaces with legacy aliases.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (11 skipped: 11 unsupported.)

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Actionable comments posted: 2

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Inline comments:
In `@core/src/main/scala/org/dbpedia/extraction/mappings/MappingExtractor.scala`:
- Around line 32-34: Update extractNode so typed quads with blank trimmed values
are removed before the graph.isEmpty child-fallback decision, allowing
node.children to be evaluated when no valid quads remain; preserve untyped quads
and nonblank typed quads. Add a regression test covering a parent mapping that
returns only blank typed quads while its child produces valid output.

In
`@core/src/test/scala/org/dbpedia/extraction/dataparser/EthiopianDateParserTest.scala`:
- Around line 63-76: In EthiopianDateParserTest, extract the repeated expected
date strings into shared test constants and replace the duplicated literals in
the conversion and spelling-variant cases, including the entries shown in the
mapping. Preserve each case’s existing expected date while reusing the
appropriate constant.

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ℹ️ Review info

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Configuration used: Organization UI

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Run ID: 8aba50a9-8cf3-494d-ae84-6649b84a5201

📥 Commits

Reviewing files that changed from the base of the PR and between e3dfe8b and 90856b4.

📒 Files selected for processing (11)

core/src/main/scala/org/dbpedia/extraction/config/dataparser/EthiopianDateParserConfig.scala
core/src/main/scala/org/dbpedia/extraction/config/mappings/InfoboxExtractorConfig.scala
core/src/main/scala/org/dbpedia/extraction/dataparser/EthiopianDateParser.scala
core/src/main/scala/org/dbpedia/extraction/mappings/InfoboxExtractor.scala
core/src/main/scala/org/dbpedia/extraction/mappings/InfoboxReferencesExtractor.scala
core/src/main/scala/org/dbpedia/extraction/mappings/MappingExtractor.scala
core/src/main/scala/org/dbpedia/extraction/wikiparser/impl/wikipedia/Namespaces.scala
core/src/test/scala/org/dbpedia/extraction/dataparser/EthiopianDateParserTest.scala
core/src/test/scala/org/dbpedia/extraction/mappings/InfoboxExtractorConfigTest.scala
core/src/test/scala/org/dbpedia/extraction/mappings/MappingExtractorEmptyLiteralTest.scala
core/src/test/scala/org/dbpedia/extraction/wikiparser/WikiTitleTest.scala

Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review.

jimkont

looks good @Nama21yo 👍 , only fix the namespace comment I made in a separate PR

jimkont · 2026-09-07T07:11:23Z

    private def ak_namespaces = LinkedHashMap("WP"->4,"Image"->6,"Image talk"->7,"Media"-> -2,"Special"-> -1,""->0,"Talk"->1,"User"->2,"User talk"->3,"Project"->4,"Wikipedia"->4,"Project talk"->5,"Wikipedia talk"->5,"File"->6,"File talk"->7,"MediaWiki"->8,"MediaWiki talk"->9,"Template"->10,"Template talk"->11,"Help"->12,"Help talk"->13,"Category"->14,"Category talk"->15,"TimedText"->710,"TimedText talk"->711,"Module"->828,"Module talk"->829)
    private def als_namespaces = LinkedHashMap("Benutzerin"->2,"Benutzerin Diskussion"->3,"WP"->4,"Wikipedia talk"->5,"Bild"->6,"Image"->6,"Bild Diskussion"->7,"Image talk"->7,"Media"-> -2,"Medium"-> -2,"Special"-> -1,"Spezial"-> -1,""->0,"Talk"->1,"Diskussion"->1,"User"->2,"Benutzer"->2,"User talk"->3,"Benutzer Diskussion"->3,"Project"->4,"Wikipedia"->4,"Project talk"->5,"Wikipedia Diskussion"->5,"File"->6,"Datei"->6,"File talk"->7,"Datei Diskussion"->7,"MediaWiki"->8,"MediaWiki talk"->9,"MediaWiki Diskussion"->9,"Template"->10,"Vorlage"->10,"Template talk"->11,"Vorlage Diskussion"->11,"Help"->12,"Hilfe"->12,"Help talk"->13,"Hilfe Diskussion"->13,"Category"->14,"Kategorie"->14,"Category talk"->15,"Kategorie Diskussion"->15,"Portal"->100,"Portal Diskussion"->101,"Buech"->102,"Buech Diskussion"->103,"Wort"->104,"Wort Diskussion"->105,"Text"->106,"Text Diskussion"->107,"Spruch"->108,"Spruch Diskussion"->109,"Nochricht"->110,"Nochricht Diskussion"->111,"TimedText"->710,"TimedText talk"->711,"Module"->828,"Modul"->828,"Module talk"->829,"Modul Diskussion"->829)
    private def alt_namespaces = LinkedHashMap("WP"->4,"Wikipedia"->4,"ВП"->4,"Wikipedia talk"->5,"Image"->6,"Изображение"->6,"Image talk"->7,"Обсуждение изображения"->7,"Media"-> -2,"Медиа"-> -2,"Special"-> -1,"Аҥылу"-> -1,""->0,"Talk"->1,"Шӱӱжӱ"->1,"User"->2,"Туружаачы"->2,"User talk"->3,"Туружаачыны шӱӱжери"->3,"Project"->4,"Википедия"->4,"Project talk"->5,"Википедияти шӱӱжери"->5,"File"->6,"Файл"->6,"File talk"->7,"Файлды шӱӱжери"->7,"MediaWiki"->8,"MediaWiki talk"->9,"MediaWiki-ни шӱӱжери"->9,"Template"->10,"Ӱлекер"->10,"Template talk"->11,"Ӱлекерди шӱӱжери"->11,"Help"->12,"Болуш"->12,"Help talk"->13,"Болушты шӱӱжери"->13,"Category"->14,"Категория"->14,"Category talk"->15,"Категорияны шӱӱжери"->15,"TimedText"->710,"TimedText talk"->711,"Module"->828,"Модуль"->828,"Module talk"->829,"Модульды шӱӱжери"->829)
-    private def am_namespaces = LinkedHashMap("WP"->4,"Wikipedia"->4,"Wikipedia talk"->5,"Image"->6,"Image talk"->7,"መልጠፊያ"->10,"መልጠፊያ ውይይት"->11,"Media"-> -2,"ፋይል"-> -2,"Special"-> -1,"ልዩ"-> -1,""->0,"Talk"->1,"ውይይት"->1,"User"->2,"አባል"->2,"User talk"->3,"አባል ውይይት"->3,"Project"->4,"ውክፔዲያ"->4,"Project talk"->5,"ውክፔዲያ ውይይት"->5,"File"->6,"ስዕል"->6,"File talk"->7,"ስዕል ውይይት"->7,"MediaWiki"->8,"መልዕክት"->8,"MediaWiki talk"->9,"መልዕክት ውይይት"->9,"Template"->10,"መለጠፊያ"->10,"Template talk"->11,"መለጠፊያ ውይይት"->11,"Help"->12,"እርዳታ"->12,"Help talk"->13,"እርዳታ ውይይት"->13,"Category"->14,"መደብ"->14,"Category talk"->15,"መደብ ውይይት"->15,"በር"->100,"በር ውይይት"->101,"TimedText"->710,"TimedText talk"->711,"Module"->828,"Module talk"->829)


these files are auto-generated through the generate-settings task, it is better to remove it from here and create a separate PR with new settings for all languages

@jimkont — You said "these files are auto-generated", but that comment is only on the core/src/main/scala/org/dbpedia/extraction/wikiparser/impl/wikipedia/Namespaces.scala file. Clarity is key in such comments. Could you be more specific about what is/are auto-generated, and provide (a) link(s) to the document(s) that should get the new "separate PR with new settings for all languages"?

@TallTed, I believe what it meant is among the auto-generated files (Namespaces.scala, Redirect.scala, Disambiguation.scala), I only changed Namespaces.scala, so it's just a single file, from what I understood.

@jimkont what I was thinking is to continue on this existing PR rather than hand-editing Namespaces.scala, I'll correct amwiki-configuration.xml instead and push the auto-generated Namespaces.scala that comes out of that. Would that be a better approach?

running ../run generate-settings updates the files below with configuration for all languages,
it includes the manual changes in this file.

If you want to keep the changes in this PR, I suggest you run the script and discard the changes for all other languages, but do not edits things manually since these files are auto-generated and all changes will be discarded on the next run

Changes not staged for commit: (use "git add <file>..." to update what will be committed) (use "git restore <file>..." to discard changes in working directory) modified: src/main/scala/org/dbpedia/extraction/wikiparser/impl/wikipedia/Disambiguation.scala modified: src/main/scala/org/dbpedia/extraction/wikiparser/impl/wikipedia/Namespaces.scala modified: src/main/scala/org/dbpedia/extraction/wikiparser/impl/wikipedia/Redirect.scala modified: src/main/settings/aawiki-configuration.xml modified: src/main/settings/aawiki-disambiguation-templates.xml modified: src/main/settings/abwiki-configuration.xml modified: src/main/settings/abwiki-disambiguation-templates.xml modified: src/main/settings/acewiki-configuration.xml modified: src/main/settings/acewiki-disambiguation-templates.xml modified: src/main/settings/adywiki-configuration.xml modified: src/main/settings/adywiki-disambiguation-templates.xml modified: src/main/settings/arcwiki-configuration.xml modified: src/main/settings/arwiki-configuration.xml modified: src/main/settings/arywiki-configuration.xml modified: src/main/settings/arywiki-disambiguation-templates.xml modified: src/main/settings/arzwiki-configuration.xml modified: src/main/settings/aswiki-configuration.xml modified: src/main/settings/aswiki-disambiguation-templates.xml modified: src/main/settings/bewiki-configuration.xml modified: src/main/settings/bewwiki-configuration.xml modified: src/main/settings/bewwiki-disambiguation-templates.xml modified: src/main/settings/bgwiki-configuration.xml modified: src/main/settings/bhwiki-configuration.xml modified: src/main/settings/bhwiki-disambiguation-templates.xml modified: src/main/settings/commonswiki-configuration.xml modified: src/main/settings/csbwiki-configuration.xml modified: src/main/settings/cuwiki-configuration.xml modified: src/main/settings/cvwiki-configuration.xml modified: src/main/settings/cywiki-configuration.xml modified: src/main/settings/dawiki-configuration.xml modified: src/main/settings/dawiki-disambiguation-templates.xml modified: src/main/settings/fiwiki-configuration.xml modified: src/main/settings/fjwiki-configuration.xml modified: src/main/settings/fjwiki-disambiguation-templates.xml modified: src/main/settings/fonwiki-configuration.xml modified: src/main/settings/fonwiki-disambiguation-templates.xml modified: src/main/settings/fowiki-configuration.xml modified: src/main/settings/frwiki-configuration.xml modified: src/main/settings/frwiki-disambiguation-templates.xml modified: src/main/settings/ilowiki-configuration.xml modified: src/main/settings/ilowiki-disambiguation-templates.xml modified: src/main/settings/inhwiki-configuration.xml modified: src/main/settings/inhwiki-disambiguation-templates.xml modified: src/main/settings/iowiki-configuration.xml modified: src/main/settings/iswiki-configuration.xml modified: src/main/settings/lowiki-configuration.xml modified: src/main/settings/lrcwiki-configuration.xml modified: src/main/settings/lrcwiki-disambiguation-templates.xml modified: src/main/settings/ltwiki-configuration.xml modified: src/main/settings/ltwiki-disambiguation-templates.xml modified: src/main/settings/lvwiki-configuration.xml modified: src/main/settings/pamwiki-configuration.xml modified: src/main/settings/papwiki-configuration.xml modified: src/main/settings/papwiki-disambiguation-templates.xml modified: src/main/settings/pcmwiki-configuration.xml modified: src/main/settings/pdcwiki-configuration.xml modified: src/main/settings/pdcwiki-disambiguation-templates.xml modified: src/main/settings/pflwiki-configuration.xml modified: src/main/settings/piwiki-configuration.xml modified: src/main/settings/taywiki-configuration.xml modified: src/main/settings/taywiki-disambiguation-templates.xml modified: src/main/settings/tcywiki-configuration.xml modified: src/main/settings/tetwiki-configuration.xml modified: src/main/settings/tgwiki-configuration.xml modified: src/main/settings/thwiki-configuration.xml modified: src/main/settings/wikidatawiki-configuration.xml Untracked files: (use "git add <file>..." to include in what will be committed) src/main/settings/bdrwiki-configuration.xml src/main/settings/bdrwiki-disambiguation-templates.xml src/main/settings/isvwiki-configuration.xml src/main/settings/isvwiki-disambiguation-templates.xml src/main/settings/magwiki-configuration.xml src/main/settings/magwiki-disambiguation-templates.xml src/main/settings/tddwiki-configuration.xml src/main/settings/tddwiki-disambiguation-templates.xml src/main/settings/tigwiki-configuration.xml

we could also create a separate PR with all these changes, which seems simpler and benefits all languages, up to you

Now it is clear Thanks, I'll work the namespace fix as a separate PR and revert the change I made to Namespaces.scala here.

This reverts commit 90856b4.

sonarqubecloud · 2026-09-09T15:24:33Z

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

Nama21yo added 4 commits September 1, 2026 10:58

fix(dataparser): repair Amharic Ethiopian dates

c870f5d

Correct Gregorian year selection, accept standard day and era markers, fix regex capture arity, and support observed month spellings.\n\nRefs dbpedia#845

fix(infobox): preserve baseline ignored properties

9e173d3

Union language-specific ignored properties with the English defaults and extend the Amharic image and layout keys.\n\nRefs dbpedia#845

fix(mappings): omit empty literal quads

34d82ed

Skip blank infobox values and filter empty typed mapping literals while preserving resource-valued quads.\n\nRefs dbpedia#845

fix(wikiparser): recognize Amharic module namespaces

90856b4

Add the current localized Module and Module talk aliases while retaining the English aliases used by older dumps.\n\nRefs dbpedia#845

coderabbitai Bot reviewed Sep 1, 2026

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Comment thread core/src/main/scala/org/dbpedia/extraction/mappings/MappingExtractor.scala Resolved

Comment thread core/src/test/scala/org/dbpedia/extraction/dataparser/EthiopianDateParserTest.scala Resolved

jimkont approved these changes Sep 7, 2026

View reviewed changes

Revert "fix(wikiparser): recognize Amharic module namespaces"

36af503

This reverts commit 90856b4.

Nama21yo mentioned this pull request Sep 10, 2026

chore: refresh generated wiki settings from live data #847

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jimkont merged commit b66cb8b into dbpedia:master Sep 28, 2026
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