lucene/analysis/common/src/java/org/apache/lucene/analysis/cjk/CJKWidthCharFilterFactory.java

/*
 * 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,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.lucene.analysis.cjk;

import java.io.Reader;
import java.util.Map;

import org.apache.lucene.analysis.util.CharFilterFactory;

/**
 * Factory for {@link CJKWidthCharFilter}.
 * @lucene.spi {@value #NAME}
 */
public class CJKWidthCharFilterFactory extends CharFilterFactory {

  /** SPI name */
  public static final String NAME = "cjkWidth";

  /** Creates a new CJKWidthCharFilterFactory */
  public CJKWidthCharFilterFactory(Map<String,String> args) {
    super(args);
    if (!args.isEmpty()) {
      throw new IllegalArgumentException("Unknown parameters: " + args);
    }
  }

  @Override
  public Reader create(Reader input) {
    return new CJKWidthCharFilter(input);
  }

  @Override
  public Reader normalize(Reader input) {
    return create(input);
  }

}