package org.xbib.elasticsearch.index.analysis;
import java.io.IOException;
import java.io.StringReader;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.standard.StandardTokenizer;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
import org.apache.lucene.util.Version;
import org.elasticsearch.common.inject.Injector;
import org.elasticsearch.common.inject.ModulesBuilder;
import org.elasticsearch.common.settings.ImmutableSettings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.settings.SettingsModule;
import org.elasticsearch.env.Environment;
import org.elasticsearch.env.EnvironmentModule;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.IndexNameModule;
import org.elasticsearch.index.analysis.AnalysisModule;
import org.elasticsearch.index.analysis.AnalysisService;
import org.elasticsearch.index.analysis.TokenFilterFactory;
import org.elasticsearch.index.settings.IndexSettingsModule;
import org.elasticsearch.indices.analysis.IndicesAnalysisModule;
import org.elasticsearch.indices.analysis.IndicesAnalysisService;
import org.hamcrest.MatcherAssert;
import org.hamcrest.Matchers;
import org.xbib.elasticsearch.plugin.analysis.decompound.AnalysisDecompoundPlugin;
import org.testng.Assert;
import org.testng.annotations.Test;
public class GermanNormalizationTests extends Assert {
@Test
public void test() throws IOException {
AnalysisService analysisService = createAnalysisService();
TokenFilterFactory tokenFilter = analysisService.tokenFilter("umlaut");
MatcherAssert.assertThat(tokenFilter, Matchers.instanceOf(GermanNormalizationFilterFactory.class));
String source = "Ein schöner Tag in Köln im Café an der Straßenecke";
String[] expected = {
"Ein",
"schoner",
"Tag",
"in",
"Koln",
"im",
"Café",
"an",
"der",
"Strassenecke"
};
Tokenizer tokenizer = new StandardTokenizer(Version.LUCENE_36, new StringReader(source));
assertSimpleTSOutput(tokenFilter.create(tokenizer), expected);
}
public AnalysisService createAnalysisService() {
Settings settings = ImmutableSettings.settingsBuilder().loadFromClasspath("org/xbib/elasticsearch/index/analysis/german_normalization_analysis.json").build();
Index index = new Index("test");
Injector parentInjector = new ModulesBuilder().add(new SettingsModule(settings),
new EnvironmentModule(new Environment(settings)),
new IndicesAnalysisModule())
.createInjector();
AnalysisModule analysisModule = new AnalysisModule(settings, parentInjector.getInstance(IndicesAnalysisService.class));
new AnalysisDecompoundPlugin().onModule(analysisModule);
Injector injector = new ModulesBuilder().add(
new IndexSettingsModule(index, settings),
new IndexNameModule(index),
analysisModule)
.createChildInjector(parentInjector);
return injector.getInstance(AnalysisService.class);
}
public static void assertSimpleTSOutput(TokenStream stream,
String[] expected) throws IOException {
stream.reset();
CharTermAttribute termAttr = stream.getAttribute(CharTermAttribute.class);
assertNotNull(termAttr);
int i = 0;
while (stream.incrementToken()) {
assertTrue(i < expected.length);
assertEquals(expected[i++], termAttr.toString(), "expected different term at index " + i);
}
assertEquals(i, expected.length, "not all tokens produced");
}
}