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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.querytransform;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.List;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.yahoo.component.chain.Chain;
import com.yahoo.prelude.Index;
import com.yahoo.prelude.IndexFacts;
import com.yahoo.prelude.query.AndItem;
import com.yahoo.prelude.query.OrItem;
import com.yahoo.prelude.query.PhraseItem;
import com.yahoo.prelude.query.PhraseSegmentItem;
import com.yahoo.prelude.query.WeightedSetItem;
import com.yahoo.prelude.query.WordAlternativesItem;
import com.yahoo.prelude.query.WordAlternativesItem.Alternative;
import com.yahoo.prelude.query.WordItem;
import com.yahoo.search.Query;
import com.yahoo.search.Result;
import com.yahoo.search.Searcher;
import com.yahoo.search.searchchain.Execution;
/**
* Tests term lowercasing in the search chain.
*
* @author <a href="mailto:steinar@yahoo-inc.com">Steinar Knutsen</a>
*/
public class LowercasingTestCase {
private static final String TEDDY = "teddy";
private static final String BAMSE = "bamse";
IndexFacts settings;
Execution execution;
@Before
public void setUp() throws Exception {
IndexFacts f = new IndexFacts();
Index bamse = new Index(BAMSE);
Index teddy = new Index(TEDDY);
Index defaultIndex = new Index("default");
bamse.setLowercase(true);
teddy.setLowercase(false);
defaultIndex.setLowercase(true);
f.addIndex("nalle", bamse);
f.addIndex("nalle", teddy);
f.addIndex("nalle", defaultIndex);
f.freeze();
settings = f;
execution = new Execution(new Chain<Searcher>(
new VespaLowercasingSearcher(new LowercasingConfig(new LowercasingConfig.Builder()))),
Execution.Context.createContextStub(settings));
}
@After
public void tearDown() throws Exception {
execution = null;
}
@Test
public void smoke() {
Query q = new Query();
AndItem root = new AndItem();
WordItem tmp;
tmp = new WordItem("Gnuff", BAMSE, true);
root.addItem(tmp);
tmp = new WordItem("Blaff", TEDDY, true);
root.addItem(tmp);
tmp = new WordItem("Blyant", "", true);
root.addItem(tmp);
q.getModel().getQueryTree().setRoot(root);
Result r = execution.search(q);
root = (AndItem) r.getQuery().getModel().getQueryTree().getRoot();
WordItem w0 = (WordItem) root.getItem(0);
WordItem w1 = (WordItem) root.getItem(1);
WordItem w2 = (WordItem) root.getItem(2);
assertEquals("gnuff", w0.getWord());
assertEquals("Blaff", w1.getWord());
assertEquals("blyant", w2.getWord());
}
@Test
public void slightlyMoreComplexTree() {
Query q = new Query();
AndItem a0 = new AndItem();
OrItem o0 = new OrItem();
PhraseItem p0 = new PhraseItem();
p0.setIndexName(BAMSE);
PhraseSegmentItem p1 = new PhraseSegmentItem("Overbuljongterningpakkmesterassistent", true, false);
p1.setIndexName(BAMSE);
WordItem tmp;
tmp = new WordItem("Nalle0", BAMSE, true);
a0.addItem(tmp);
tmp = new WordItem("Nalle1", BAMSE, true);
o0.addItem(tmp);
tmp = new WordItem("Nalle2", BAMSE, true);
o0.addItem(tmp);
a0.addItem(o0);
tmp = new WordItem("Nalle3", BAMSE, true);
p0.addItem(tmp);
p1.addItem(new WordItem("Over", BAMSE, true));
p1.addItem(new WordItem("buljong", BAMSE, true));
p1.addItem(new WordItem("terning", BAMSE, true));
p1.addItem(new WordItem("pakk", BAMSE, true));
p1.addItem(new WordItem("Mester", BAMSE, true));
p1.addItem(new WordItem("assistent", BAMSE, true));
p1.lock();
p0.addItem(p1);
a0.addItem(p0);
q.getModel().getQueryTree().setRoot(a0);
Result r = execution.search(q);
AndItem root = (AndItem) r.getQuery().getModel().getQueryTree().getRoot();
tmp = (WordItem) root.getItem(0);
assertEquals("nalle0", tmp.getWord());
OrItem orElement = (OrItem) root.getItem(1);
tmp = (WordItem) orElement.getItem(0);
assertEquals("nalle1", tmp.getWord());
tmp = (WordItem) orElement.getItem(1);
assertEquals("nalle2", tmp.getWord());
PhraseItem phrase = (PhraseItem) root.getItem(2);
tmp = (WordItem) phrase.getItem(0);
assertEquals("nalle3", tmp.getWord());
PhraseSegmentItem locked = (PhraseSegmentItem) phrase.getItem(1);
assertEquals("over", ((WordItem) locked.getItem(0)).getWord());
assertEquals("buljong", ((WordItem) locked.getItem(1)).getWord());
assertEquals("terning", ((WordItem) locked.getItem(2)).getWord());
assertEquals("pakk", ((WordItem) locked.getItem(3)).getWord());
assertEquals("mester", ((WordItem) locked.getItem(4)).getWord());
assertEquals("assistent", ((WordItem) locked.getItem(5)).getWord());
}
@Test
public void testWeightedSet() {
Query q = new Query();
AndItem root = new AndItem();
WeightedSetItem tmp;
tmp = new WeightedSetItem(BAMSE);
tmp.addToken("AbC", 3);
root.addItem(tmp);
tmp = new WeightedSetItem(TEDDY);
tmp.addToken("dEf", 5);
root.addItem(tmp);
q.getModel().getQueryTree().setRoot(root);
Result r = execution.search(q);
root = (AndItem) r.getQuery().getModel().getQueryTree().getRoot();
WeightedSetItem w0 = (WeightedSetItem) root.getItem(0);
WeightedSetItem w1 = (WeightedSetItem) root.getItem(1);
assertEquals(1, w0.getNumTokens());
assertEquals(1, w1.getNumTokens());
assertEquals("abc", w0.getTokens().next().getKey());
assertEquals("dEf", w1.getTokens().next().getKey());
}
@Test
public void testDisableLowercasingWeightedSet() {
execution = new Execution(new Chain<Searcher>(
new VespaLowercasingSearcher(new LowercasingConfig(
new LowercasingConfig.Builder()
.transform_weighted_sets(false)))),
Execution.Context.createContextStub(settings));
Query q = new Query();
AndItem root = new AndItem();
WeightedSetItem tmp;
tmp = new WeightedSetItem(BAMSE);
tmp.addToken("AbC", 3);
root.addItem(tmp);
tmp = new WeightedSetItem(TEDDY);
tmp.addToken("dEf", 5);
root.addItem(tmp);
q.getModel().getQueryTree().setRoot(root);
Result r = execution.search(q);
root = (AndItem) r.getQuery().getModel().getQueryTree().getRoot();
WeightedSetItem w0 = (WeightedSetItem) root.getItem(0);
WeightedSetItem w1 = (WeightedSetItem) root.getItem(1);
assertEquals(1, w0.getNumTokens());
assertEquals(1, w1.getNumTokens());
assertEquals("AbC", w0.getTokens().next().getKey());
assertEquals("dEf", w1.getTokens().next().getKey());
}
@Test
public void testLowercasingWordAlternatives() {
execution = new Execution(new Chain<Searcher>(new VespaLowercasingSearcher(new LowercasingConfig(
new LowercasingConfig.Builder().transform_weighted_sets(false)))), Execution.Context.createContextStub(settings));
Query q = new Query();
WordAlternativesItem root;
List<WordAlternativesItem.Alternative> terms = new ArrayList<>();
terms.add(new Alternative("ABC", 1.0));
terms.add(new Alternative("def", 1.0));
root = new WordAlternativesItem(BAMSE, true, null, terms);
q.getModel().getQueryTree().setRoot(root);
Result r = execution.search(q);
root = (WordAlternativesItem) r.getQuery().getModel().getQueryTree().getRoot();
assertEquals(3, root.getAlternatives().size());
assertEquals("ABC", root.getAlternatives().get(0).word);
assertEquals(1.0d, root.getAlternatives().get(0).exactness, 1e-15d);
assertEquals("abc", root.getAlternatives().get(1).word);
assertEquals(.7d, root.getAlternatives().get(1).exactness, 1e-15d);
assertEquals("def", root.getAlternatives().get(2).word);
assertEquals(1.0d, root.getAlternatives().get(2).exactness, 1e-15d);
}
}
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