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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.index.analysis;
import com.carrotsearch.randomizedtesting.annotations.ThreadLeakScope;
import com.carrotsearch.randomizedtesting.annotations.ThreadLeakScope.Scope;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.core.StopFilter;
import org.apache.lucene.analysis.core.WhitespaceTokenizer;
import org.elasticsearch.test.ESTokenStreamTestCase;
import java.io.IOException;
import java.io.StringReader;
import static org.hamcrest.Matchers.instanceOf;
@ThreadLeakScope(Scope.NONE)
public class ShingleTokenFilterFactoryTests extends ESTokenStreamTestCase {
private static final String RESOURCE = "/org/elasticsearch/index/analysis/shingle_analysis.json";
public void testDefault() throws IOException {
AnalysisService analysisService = AnalysisTestsHelper.createAnalysisServiceFromClassPath(createTempDir(), RESOURCE);
TokenFilterFactory tokenFilter = analysisService.tokenFilter("shingle");
String source = "the quick brown fox";
String[] expected = new String[]{"the", "the quick", "quick", "quick brown", "brown", "brown fox", "fox"};
Tokenizer tokenizer = new WhitespaceTokenizer();
tokenizer.setReader(new StringReader(source));
assertTokenStreamContents(tokenFilter.create(tokenizer), expected);
}
public void testInverseMapping() throws IOException {
AnalysisService analysisService = AnalysisTestsHelper.createAnalysisServiceFromClassPath(createTempDir(), RESOURCE);
TokenFilterFactory tokenFilter = analysisService.tokenFilter("shingle_inverse");
assertThat(tokenFilter, instanceOf(ShingleTokenFilterFactory.class));
String source = "the quick brown fox";
String[] expected = new String[]{"the_quick_brown", "quick_brown_fox"};
Tokenizer tokenizer = new WhitespaceTokenizer();
tokenizer.setReader(new StringReader(source));
assertTokenStreamContents(tokenFilter.create(tokenizer), expected);
}
public void testInverseMappingNoShingles() throws IOException {
AnalysisService analysisService = AnalysisTestsHelper.createAnalysisServiceFromClassPath(createTempDir(), RESOURCE);
TokenFilterFactory tokenFilter = analysisService.tokenFilter("shingle_inverse");
assertThat(tokenFilter, instanceOf(ShingleTokenFilterFactory.class));
String source = "the quick";
String[] expected = new String[]{"the", "quick"};
Tokenizer tokenizer = new WhitespaceTokenizer();
tokenizer.setReader(new StringReader(source));
assertTokenStreamContents(tokenFilter.create(tokenizer), expected);
}
public void testFillerToken() throws IOException {
AnalysisService analysisService = AnalysisTestsHelper.createAnalysisServiceFromClassPath(createTempDir(), RESOURCE);
TokenFilterFactory tokenFilter = analysisService.tokenFilter("shingle_filler");
String source = "simon the sorcerer";
String[] expected = new String[]{"simon FILLER", "simon FILLER sorcerer", "FILLER sorcerer"};
Tokenizer tokenizer = new WhitespaceTokenizer();
tokenizer.setReader(new StringReader(source));
TokenStream stream = new StopFilter(tokenizer, StopFilter.makeStopSet("the"));
assertTokenStreamContents(tokenFilter.create(stream), expected);
}
}
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