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package morfologik.stemming;
import java.util.*;
/**
* A dictionary-based stemmer for the Polish language. This stemmer requires an
* FSA-compiled dictionary to be present in classpath resources.
*
* <b>Objects of this class are not thread safe.</b>
*
* @see morfologik.stemming.DictionaryLookup
*/
public final class PolishStemmer implements IStemmer, Iterable<WordData> {
/**
* Dictionary lookup delegate.
*/
private final List<DictionaryLookup> delegate = new ArrayList<DictionaryLookup>();
/*
*
*/
public PolishStemmer() {
delegate.add(new DictionaryLookup(Dictionary.getForLanguage("pl")));
}
/**
* {@inheritDoc}
*/
public List<WordData> lookup(CharSequence word) {
if (delegate.size() == 1) {
return delegate.get(0).lookup(word);
} else {
List<WordData> forms = null;
for (DictionaryLookup lookup : delegate) {
forms = lookup.lookup(word);
if (forms.size() > 0)
break;
}
return forms;
}
}
/**
* Iterates over all dictionary forms stored in this stemmer.
*/
public Iterator<WordData> iterator() {
if (delegate.size() == 1) {
return delegate.get(0).iterator();
} else {
throw new RuntimeException("No iteration over compound stemmer forms: "
+ Arrays.toString(delegate.toArray()));
}
}
}
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