如何在不重新索引的情况下更新 Lucene Spellchecker 索引？

Question

我有一个像这样的 Lucene SpellChecker 索引实现：

def buildAutoSuggestIndex(path:Path):SpellChecker = {
    val config = new IndexWriterConfig(new CustomAnalyzer())
    val dictionary = new PlainTextDictionary(path)
    val directory = FSDirectory.open(path.getParent)
    val spellChecker = new SpellChecker(directory)
    val jw = new JaroWinklerDistance()
    jw.setThreshold(jaroWinklerThreshold)

    spellChecker.setStringDistance(new JaroWinklerDistance())
    spellChecker.indexDictionary(dictionary, config, true)

    spellChecker
}

我需要更新这些 Spellchecker 词典，即重新索引新条目，而不是重新索引整个索引。有什么方法可以更新 SpellChecker 索引吗？

Answer 1

SpellChecker.indexDictionary(...) 已经在此处避免重新索引术语：

terms: while ((currentTerm = iter.next()) != null) {

  String word = currentTerm.utf8ToString();
  int len = word.length();
  if (len < 3) {
    continue; // too short we bail but "too long" is fine...
  }

  if (!isEmpty) {
    for (TermsEnum te : termsEnums) {
      if (te.seekExact(currentTerm)) {
        continue terms;
      }
    }
  }

  // ok index the word
  Document doc = createDocument(word, getMin(len), getMax(len));
  writer.addDocument(doc);

seelkExact 将 return false 如果该术语已包含，并且未添加包含该术语的 n-gram 的文档 (continue terms;)。

如何在不重新索引的情况下更新 Lucene Spellchecker 索引？

How to update Lucene Spellchecker indexes without reindexing?

lucene

spell-checking