/*
* 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.core;
import java.util.Arrays;
import java.util.Collection;
import java.util.Map;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.util.TokenizerFactory;
import org.apache.lucene.util.AttributeFactory;
/**
* Factory for {@link WhitespaceTokenizer}.
* <pre class="prettyprint">
* <fieldType name="text_ws" class="solr.TextField" positionIncrementGap="100">
* <analyzer>
* <tokenizer class="solr.WhitespaceTokenizerFactory" rule="unicode"/>
* </analyzer>
* </fieldType></pre>
*
* Options:
* <ul>
* <li>rule: either "java" for {@link WhitespaceTokenizer}
* or "unicode" for {@link UnicodeWhitespaceTokenizer}</li>
* </ul>
*/
public class WhitespaceTokenizerFactory extends TokenizerFactory {
public static final String RULE_JAVA = "java";
public static final String RULE_UNICODE = "unicode";
private static final Collection<String> RULE_NAMES = Arrays.asList(RULE_JAVA, RULE_UNICODE);
private final String rule;
/** Creates a new WhitespaceTokenizerFactory */
public WhitespaceTokenizerFactory(Map<String,String> args) {
super(args);
rule = get(args, "rule", RULE_NAMES, RULE_JAVA);
if (!args.isEmpty()) {
throw new IllegalArgumentException("Unknown parameters: " + args);
}
}
@Override
public Tokenizer create(AttributeFactory factory) {
switch (rule) {
case RULE_JAVA:
return new WhitespaceTokenizer(factory);
case RULE_UNICODE:
return new UnicodeWhitespaceTokenizer(factory);
default:
throw new AssertionError();
}
}
}