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Nuclos localizing rules: BusinessException, InputRequiredException, MessageContext, localization key, locale, withArgs, DoNotTranslate. |
Language: Deutsch · English
Localizing rules
Make rule messages translatable – BusinessException, InputRequiredException and MessageContext with keys, locale and placeholders.
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| colour | Blue |
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| title | Application developer |
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| colour | Green |
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| title | Updated: Jul 2026 |
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| colour | Grey |
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| title | applies to Nuclos 4.2026.x |
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Overview
Rule messages to the user can be localized since v4.2025.15. The classes BusinessException, InputRequiredException and MessageContext provide support. Pass a locale whenever possible – otherwise Nuclos tries to determine the nuclet from the package.
The quick way
For static texts: automatic key generation via the boolean flag true.
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throw new BusinessException(new DoNotTranslate(machineApi.getErrorMessage())); |
The optimal way
Assign a fixed, unique localization key. This lets you change the source text later without rebuilding translations from scratch.
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throw new BusinessException(new DoNotTranslate(machineApi.getErrorMessage())); |
Preventing translation
Pass the text as a DoNotTranslate object:
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throw new BusinessException(new DoNotTranslate(machineApi.getErrorMessage())); |
Parametrizing messages
Dynamic parts via withArgs/withMessageArgs – only the template with {} placeholders is translated:
Related pages
Supporting classes
Rule API.
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