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Lucene example source code file (RegexCapabilities.java)

This example Lucene source code file (RegexCapabilities.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lucene tags/keywords

regexcapabilities, regexcapabilities, string, string

The Lucene RegexCapabilities.java source code

package org.apache.lucene.search.regex;

 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

 * Defines basic operations needed by {@link RegexQuery} for a regular
 * expression implementation.
public interface RegexCapabilities {
   * Called by the constructor of {@link RegexTermEnum} allowing
   * implementations to cache a compiled version of the regular
   * expression pattern.
   * @param pattern regular expression pattern
  void compile(String pattern);

   * @param string
   * @return true if string matches the pattern last passed to {@link #compile}.
  boolean match(String string);

   * A wise prefix implementation can reduce the term enumeration (and thus increase performance)
   * of RegexQuery dramatically!
   * @return static non-regex prefix of the pattern last passed to {@link #compile}.  May return null.
  String prefix();

Other Lucene examples (source code examples)

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