Examples with MultiFieldQueryParser org.apache.lucene.queryparser.classic.MultiFieldQueryParser used on opensource projects

Example 6 with MultiFieldQueryParser

use of org.apache.lucene.queryparser.classic.MultiFieldQueryParser in project textdb by TextDB.

the class RegexMatcherSourceOperator method createLuceneQuery.

public static Query createLuceneQuery(RegexSourcePredicate predicate) throws StorageException {
    Query luceneQuery;
    String queryString;
    // Try to apply translator. If it fails, use scan query.
    try {
        queryString = RegexToGramQueryTranslator.translate(predicate.getRegex()).getLuceneQueryString();
    } catch (com.google.re2j.PatternSyntaxException e) {
        queryString = DataConstants.SCAN_QUERY;
    }
    // Try to parse the query string. It if fails, raise an exception.
    try {
        luceneQuery = new MultiFieldQueryParser(predicate.getAttributeNames().stream().toArray(String[]::new), RelationManager.getRelationManager().getTableAnalyzer(predicate.getTableName())).parse(queryString);
    } catch (ParseException e) {
        throw new StorageException(e);
    }
    return luceneQuery;
}