Karl Richter created TIKA-2439:
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Summary: Avoid NullPointerException in
org.apache.tika.langdetect.OptimaizeLangDetector if models haven't been loaded
Key: TIKA-2439
URL: https://issues.apache.org/jira/browse/TIKA-2439
Project: Tika
Issue Type: Improvement
Components: languageidentifier
Affects Versions: 1.17
Reporter: Karl Richter
In an intuitive usage of
{code:java}
LanguageDetector languageDetector =
LanguageDetector.getDefaultLanguageDetector();
List<LanguageResult> languageResults =
languageDetector.detectAll(someNonEmptyString);
{code}
`org.apache.tika.langdetect.OptimaizeLangDetector` might/will (?) be chosen as
default detector, but since there's no call to `LanguageDetector.loadModels()`
`LanguageDetector.detector` is `null` in `detectAll` which causes an unhelpful
error message which one has to investigate in the code. A simple check whether
`detector` is `null` and throwing an `IllegalStateException("models haven't
been loaded yet (forgot to call loadModels?")` would be much more intuitive.
If that corresponds to the expected behaviour (it's my first week with Tika), I
can provide a patch or pull request.
experienced with 1.16-76-gecc59adc9
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