src/main/java/de/ids_mannheim/korap/filter/RegexFilter.java

package de.ids_mannheim.korap.filter;

import java.util.*;

import org.apache.lucene.search.RegexpQuery;
import org.apache.lucene.index.Term;

/**
 * @author Nils Diewald
 *
 * RegexFilter implements a helper object for regular expressions used in KorapFilter
 * constraints.
 */

public class RegexFilter {
    String regex;

    public RegexFilter (String regex) {
	this.regex = regex;
    };

    public RegexpQuery toQuery (String field) {
	return new RegexpQuery(
            new Term(field, this.regex)
	);
    };
};