/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.query.impl.predicates;
import com.hazelcast.core.TypeConverter;
import com.hazelcast.query.Predicate;
import com.hazelcast.query.impl.Index;
import com.hazelcast.query.impl.Indexes;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.hamcrest.Matchers;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import static com.hazelcast.query.Predicates.equal;
import static com.hazelcast.query.Predicates.notEqual;
import static com.hazelcast.query.Predicates.or;
import static com.hazelcast.query.impl.TypeConverters.INTEGER_CONVERTER;
import static org.hamcrest.Matchers.arrayWithSize;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.instanceOf;
import static org.junit.Assert.assertThat;
import static org.mockito.Matchers.anyString;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class OrToInVisitorTest {
private OrToInVisitor visitor;
private Indexes mockIndexes;
private Index mockIndex;
@Before
public void setUp() {
mockIndexes = mock(Indexes.class);
mockIndex = mock(Index.class);
when(mockIndexes.getIndex(anyString())).thenReturn(mockIndex);
visitor = new OrToInVisitor();
useConverter(INTEGER_CONVERTER);
}
@Test
public void whenEmptyPredicate_thenReturnItself() {
OrPredicate or = new OrPredicate(null);
OrPredicate result = (OrPredicate) visitor.visit(or, mockIndexes);
assertThat(or, equalTo(result));
}
@Test
public void whenThresholdNotExceeded_thenReturnItself() {
Predicate p1 = equal("age", 1);
Predicate p2 = equal("age", 2);
OrPredicate or = (OrPredicate) or(p1, p2);
OrPredicate result = (OrPredicate) visitor.visit(or, mockIndexes);
assertThat(or, equalTo(result));
}
@Test
public void whenThresholdExceeded_noCandidatesFound_thenReturnItself() {
// (age != 1 or age != 2 or age != 3 or age != 4 or age != 5)
Predicate p1 = notEqual("age", 1);
Predicate p2 = notEqual("age", 2);
Predicate p3 = notEqual("age", 3);
Predicate p4 = notEqual("age", 4);
Predicate p5 = notEqual("age", 5);
OrPredicate or = (OrPredicate) or(p1, p2, p3, p4, p5);
OrPredicate result = (OrPredicate) visitor.visit(or, mockIndexes);
assertThat(or, equalTo(result));
}
@Test
public void whenThresholdExceeded_noEnoughCandidatesFound_thenReturnItself() {
// (age != 1 or age != 2 or age != 3 or age != 4 or age != 5)
Predicate p1 = equal("age", 1);
Predicate p2 = equal("age", 2);
Predicate p3 = equal("age", 3);
Predicate p4 = equal("age", 4);
Predicate p5 = notEqual("age", 5);
OrPredicate or = (OrPredicate) or(p1, p2, p3, p4, p5);
OrPredicate result = (OrPredicate) visitor.visit(or, mockIndexes);
assertThat(or, equalTo(result));
}
@Test
public void whenThresholdExceeded_thenRewriteToInPredicate() {
// (age = 1 or age = 2 or age = 3 or age = 4 or age = 5) --> (age in (1, 2, 3, 4, 5))
Predicate p1 = equal("age", 1);
Predicate p2 = equal("age", 2);
Predicate p3 = equal("age", 3);
Predicate p4 = equal("age", 4);
Predicate p5 = equal("age", 5);
OrPredicate or = (OrPredicate) or(p1, p2, p3, p4, p5);
InPredicate result = (InPredicate) visitor.visit(or, mockIndexes);
Comparable[] values = result.values;
assertThat(values, arrayWithSize(5));
assertThat(values, Matchers.is(Matchers.<Comparable>arrayContainingInAnyOrder(1, 2, 3, 4, 5)));
}
@Test
public void whenThresholdExceeded_thenRewriteToOrPredicate() {
// (age = 1 or age = 2 or age = 3 or age = 4 or age = 5 or age != 6) --> (age in (1, 2, 3, 4, 5) or age != 6)
Predicate p1 = equal("age", 1);
Predicate p2 = equal("age", 2);
Predicate p3 = equal("age", 3);
Predicate p4 = equal("age", 4);
Predicate p5 = equal("age", 5);
Predicate p6 = notEqual("age", 6);
OrPredicate or = (OrPredicate) or(p1, p2, p3, p4, p5, p6);
OrPredicate result = (OrPredicate) visitor.visit(or, mockIndexes);
Predicate[] predicates = result.predicates;
for (Predicate predicate : predicates) {
if (predicate instanceof InPredicate) {
Comparable[] values = ((InPredicate) predicate).values;
assertThat(values, arrayWithSize(5));
assertThat(values, Matchers.is(Matchers.<Comparable>arrayContainingInAnyOrder(1, 2, 3, 4, 5)));
} else {
assertThat(predicate, instanceOf(NotEqualPredicate.class));
}
}
}
private void useConverter(TypeConverter converter) {
when(mockIndex.getConverter()).thenReturn(converter);
}
}