@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
InMemoryLookupCache that = (InMemoryLookupCache) o;
if (numDocs != that.numDocs) return false;
if (wordIndex != null ? !wordIndex.equals(that.wordIndex) : that.wordIndex != null)
return false;
if (wordFrequencies != null
? !wordFrequencies.equals(that.wordFrequencies)
: that.wordFrequencies != null) return false;
if (docFrequencies != null
? !docFrequencies.equals(that.docFrequencies)
: that.docFrequencies != null) return false;
if (vocabWords().equals(that.vocabWords())) return true;
return true;
}
