1 package org.apache.lucene.search;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
20 import org.apache.lucene.index.Term;
23 * A Filter that restricts search results to values that have a matching prefix in a given
26 public class PrefixFilter extends MultiTermQueryWrapperFilter<PrefixQuery> {
28 public PrefixFilter(Term prefix) {
29 super(new PrefixQuery(prefix));
32 public Term getPrefix() { return query.getPrefix(); }
34 /** Prints a user-readable version of this query. */
36 public String toString () {
37 StringBuilder buffer = new StringBuilder();
38 buffer.append("PrefixFilter(");
39 buffer.append(getPrefix().toString());
41 return buffer.toString();