Example usage for org.apache.lucene.analysis.reverse ReverseStringFilter reverse

Introduction

In this page you can find the example usage for org.apache.lucene.analysis.reverse ReverseStringFilter reverse.

Prototype

public static void reverse(final char[] buffer) 

Source Link

Document

Reverses the given input buffer in-place

Usage

From source file:org.apache.solr.search.SolrComplexPhraseQueryParser.java

License:Apache License

protected Query getWildcardQuery(String field, String termStr) throws ParseException {
    // *:* -> MatchAllDocsQuery
    if ("*".equals(field) && "*".equals(termStr)) {
        return newMatchAllDocsQuery();
    }/*from  w  w w.  j ava 2s  .  co  m*/

    // can we use reversed wildcards in this field?
    String type = schema.getFieldType(field).getTypeName();
    ReversedWildcardFilterFactory factory = leadingWildcards.get(type);
    if (factory != null && factory.shouldReverse(termStr)) {
        termStr = ReverseStringFilter.reverse(termStr + factory.getMarkerChar());
    }
    Query q = super.getWildcardQuery(field, termStr);
    if (q instanceof WildcardQuery) {
        // use a constant score query to avoid overflowing clauses
        WildcardQuery wildcardQuery = new WildcardQuery(((WildcardQuery) q).getTerm());
        wildcardQuery.setRewriteMethod(MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE);
        return wildcardQuery;
    }
    return q;
}

---