/** @throws IllegalStateException if no LanguageProfile was {@link #withProfile added}. */
public LanguageDetector build() throws IllegalStateException {
if (languageProfiles.isEmpty()) throw new IllegalStateException();
return new LanguageDetectorImpl(
NgramFrequencyData.create(languageProfiles, ngramExtractor.getGramLengths()),
alpha,
seed,
shortTextAlgorithm,
prefixFactor,
suffixFactor,
probabilityThreshold,
minimalConfidence,
langWeightingMap,
ngramExtractor);
}
/**
* @throws IllegalStateException if a profile for the same language was added already (must be a
* userland bug).
*/
public LanguageDetectorBuilder withProfile(LanguageProfile languageProfile)
throws IllegalStateException {
if (langsAdded.contains(languageProfile.getLocale())) {
throw new IllegalStateException(
"A language profile for language " + languageProfile.getLocale() + " was added already!");
}
for (Integer gramLength : ngramExtractor.getGramLengths()) {
if (!languageProfile.getGramLengths().contains(gramLength)) {
throw new IllegalArgumentException(
"The NgramExtractor is set to handle "
+ gramLength
+ "-grams but the given language profile for "
+ languageProfile.getLocale()
+ " does not support this!");
}
}
langsAdded.add(languageProfile.getLocale());
languageProfiles.add(languageProfile);
return this;
}
