org.apache.tika.eval.textstats.CommonTokens Maven / Gradle / Ivy
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package org.apache.tika.eval.textstats;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.commons.lang3.mutable.MutableInt;
import org.apache.commons.lang3.tuple.Pair;
import org.apache.tika.eval.langid.Language;
import org.apache.tika.eval.tokens.AlphaIdeographFilterFactory;
import org.apache.tika.eval.tokens.CommonTokenCountManager;
import org.apache.tika.eval.tokens.CommonTokenResult;
import org.apache.tika.eval.tokens.LangModel;
import org.apache.tika.eval.tokens.TokenCounts;
public class CommonTokens implements LanguageAwareTokenCountStats {
private final CommonTokenCountManager commonTokenCountManager;
public CommonTokens() {
this(new CommonTokenCountManager());
}
public CommonTokens(CommonTokenCountManager mgr) {
this.commonTokenCountManager = mgr;
}
@Override
public CommonTokenResult calculate(List languages, TokenCounts tokenCounts) {
Pair pair = commonTokenCountManager.getLangTokens(languages.get(0).getLanguage());
String actualLangCode = pair.getKey();
Set commonTokens = pair.getValue().getTokens();
int numUniqueCommonTokens = 0;
int numCommonTokens = 0;
int numUniqueAlphabeticTokens = 0;
int numAlphabeticTokens = 0;
for (Map.Entry e : tokenCounts.getTokens().entrySet()) {
String token = e.getKey();
int count = e.getValue().intValue();
if (AlphaIdeographFilterFactory.isAlphabetic(token.toCharArray(), token.length())) {
numAlphabeticTokens += count;
numUniqueAlphabeticTokens++;
}
if (commonTokens.contains(token)) {
numCommonTokens += count;
numUniqueCommonTokens++;
}
}
return new CommonTokenResult(actualLangCode, numUniqueCommonTokens,
numCommonTokens, numUniqueAlphabeticTokens, numAlphabeticTokens);
}
}