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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.predicate;
import com.yahoo.document.predicate.Predicate;
import org.junit.jupiter.api.Test;
import java.io.IOException;
import static com.yahoo.search.predicate.serialization.SerializationTestHelper.assertSerializationDeserializationMatches;
import static org.junit.jupiter.api.Assertions.assertEquals;
/**
* @author <a href="mailto:magnarn@yahoo-inc.com">Magnar Nedland</a>
* @author bjorncs
*/
public class PredicateIndexTest {
private static final int DOC_ID = 42;
@Test
void requireThatPredicateIndexCanSearch() {
PredicateIndexBuilder builder = new PredicateIndexBuilder(10);
builder.indexDocument(1, Predicate.fromString("country in ['no', 'se'] and gender in ['male']"));
builder.indexDocument(0x3fffffe, Predicate.fromString("country in ['no'] and gender in ['female']"));
PredicateIndex index = builder.build();
PredicateIndex.Searcher searcher = index.searcher();
PredicateQuery query = new PredicateQuery();
query.addFeature("country", "no");
query.addFeature("gender", "male");
assertEquals("[1]", searcher.search(query).toList().toString());
query.addFeature("gender", "female");
assertEquals("[1, 67108862]", searcher.search(query).toList().toString());
}
@Test
void requireThatPredicateIndexCanSearchWithNotExpression() {
{
PredicateIndexBuilder builder = new PredicateIndexBuilder(10);
builder.indexDocument(1, Predicate.fromString("country in ['no'] and gender not in ['male']"));
PredicateIndex index = builder.build();
PredicateIndex.Searcher searcher = index.searcher();
PredicateQuery query = new PredicateQuery();
query.addFeature("country", "no");
query.addFeature("gender", "female");
assertEquals("[1]", searcher.search(query).toList().toString());
}
{
PredicateIndexBuilder builder = new PredicateIndexBuilder(10);
builder.indexDocument(DOC_ID, Predicate.fromString("country in ['no'] and gender in ['male']"));
builder.indexDocument(DOC_ID + 1, Predicate.fromString("country not in ['no']"));
PredicateIndex index = builder.build();
PredicateIndex.Searcher searcher = index.searcher();
PredicateQuery query = new PredicateQuery();
assertEquals("[43]", searcher.search(query).toList().toString());
query.addFeature("country", "no");
assertEquals(0, searcher.search(query).count());
}
{
PredicateIndexBuilder builder = new PredicateIndexBuilder(10);
builder.indexDocument(DOC_ID, Predicate.fromString("country not in ['no'] and gender not in ['male']"));
PredicateIndex index = builder.build();
PredicateIndex.Searcher searcher = index.searcher();
PredicateQuery query = new PredicateQuery();
assertEquals(1, searcher.search(query).count());
query.addFeature("country", "no");
assertEquals(0, searcher.search(query).count());
query.addFeature("gender", "male");
assertEquals(0, searcher.search(query).count());
query = new PredicateQuery();
query.addFeature("gender", "male");
assertEquals(0, searcher.search(query).count());
}
}
@Test
void requireThatSearchesCanUseSubqueries() {
PredicateIndexBuilder builder = new PredicateIndexBuilder(10);
builder.indexDocument(DOC_ID, Predicate.fromString("country in [no] and gender in [male]"));
PredicateIndex index = builder.build();
PredicateIndex.Searcher searcher = index.searcher();
PredicateQuery query = new PredicateQuery();
query.addFeature("country", "no", 0x3);
assertEquals(0, searcher.search(query).count());
query.addFeature("gender", "male", 0x6);
assertEquals("[[42,0x2]]", searcher.search(query).toList().toString());
}
@Test
void requireThatPredicateIndexCanSearchWithRange() {
PredicateIndexBuilder builder = new PredicateIndexBuilder(10);
builder.indexDocument(1, Predicate.fromString("gender in ['male'] and age in [20..40]"));
builder.indexDocument(2, Predicate.fromString("gender in ['female'] and age in [20..40]"));
PredicateIndex index = builder.build();
PredicateIndex.Searcher searcher = index.searcher();
PredicateQuery query = new PredicateQuery();
query.addFeature("gender", "male");
query.addRangeFeature("age", 36);
assertEquals("[1]", searcher.search(query).toList().toString());
query.addFeature("gender", "female");
assertEquals("[1, 2]", searcher.search(query).toList().toString());
}
@Test
void requireThatPredicateIndexCanSearchWithEmptyDocuments() {
PredicateIndexBuilder builder = new PredicateIndexBuilder(10);
builder.indexDocument(1, Predicate.fromString("true"));
builder.indexDocument(2, Predicate.fromString("false"));
PredicateIndex index = builder.build();
PredicateIndex.Searcher searcher = index.searcher();
PredicateQuery query = new PredicateQuery();
assertEquals("[1]", searcher.search(query).toList().toString());
}
@Test
void requireThatPredicatesHavingMultipleIdenticalConjunctionsAreSupported() {
PredicateIndexBuilder builder = new PredicateIndexBuilder(10);
builder.indexDocument(DOC_ID, Predicate.fromString(
"((a in ['b'] and c in ['d']) or x in ['y']) and ((a in ['b'] and c in ['d']) or z in ['w'])"));
PredicateIndex index = builder.build();
PredicateIndex.Searcher searcher = index.searcher();
PredicateQuery query = new PredicateQuery();
query.addFeature("a", "b");
query.addFeature("c", "d");
assertEquals("[42]", searcher.search(query).toList().toString());
}
@Test
void require_that_serialization_and_deserialization_retain_data() throws IOException {
PredicateIndexBuilder builder = new PredicateIndexBuilder(10);
builder.indexDocument(1, Predicate.fromString("country in ['no', 'se'] and gender in ['male']"));
builder.indexDocument(0x3fffffe, Predicate.fromString("country in ['no'] and gender in ['female']"));
PredicateIndex index = builder.build();
assertSerializationDeserializationMatches(
index, PredicateIndex::writeToOutputStream, PredicateIndex::fromInputStream);
}
}
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