org.apache.drill.vector.TestToNullable.java Source code

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Here is the source code for org.apache.drill.vector.TestToNullable.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.apache.drill.vector;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import org.apache.drill.common.types.TypeProtos.DataMode;
import org.apache.drill.common.types.TypeProtos.MinorType;
import org.apache.drill.exec.record.MaterializedField;
import org.apache.drill.exec.record.metadata.SchemaBuilder;
import org.apache.drill.exec.vector.IntVector;
import org.apache.drill.exec.vector.NullableIntVector;
import org.apache.drill.exec.vector.NullableVarCharVector;
import org.apache.drill.exec.vector.VarCharVector;
import org.apache.drill.test.SubOperatorTest;
import org.bouncycastle.util.Arrays;
import org.junit.Test;

public class TestToNullable extends SubOperatorTest {

    @SuppressWarnings("resource")
    @Test
    public void testFixedWidth() {
        MaterializedField intSchema = SchemaBuilder.columnSchema("a", MinorType.INT, DataMode.REQUIRED);
        IntVector intVector = new IntVector(intSchema, fixture.allocator());
        IntVector.Mutator intMutator = intVector.getMutator();
        intVector.allocateNew(100);
        for (int i = 0; i < 100; i++) {
            intMutator.set(i, i * 10);
        }
        intMutator.setValueCount(100);

        MaterializedField nullableIntSchema = SchemaBuilder.columnSchema("a", MinorType.INT, DataMode.OPTIONAL);
        NullableIntVector nullableIntVector = new NullableIntVector(nullableIntSchema, fixture.allocator());

        intVector.toNullable(nullableIntVector);

        assertEquals(0, intVector.getAccessor().getValueCount());
        NullableIntVector.Accessor niAccessor = nullableIntVector.getAccessor();
        assertEquals(100, niAccessor.getValueCount());
        for (int i = 0; i < 100; i++) {
            assertFalse(niAccessor.isNull(i));
            assertEquals(i * 10, niAccessor.get(i));
        }

        nullableIntVector.clear();

        // Don't clear the intVector, it should be empty.
        // If it is not, the test will fail with a memory leak error.
    }

    @SuppressWarnings("resource")
    @Test
    public void testNullable() {
        MaterializedField nullableIntSchema = SchemaBuilder.columnSchema("a", MinorType.INT, DataMode.OPTIONAL);
        NullableIntVector sourceVector = new NullableIntVector(nullableIntSchema, fixture.allocator());
        NullableIntVector.Mutator sourceMutator = sourceVector.getMutator();
        sourceVector.allocateNew(100);
        for (int i = 0; i < 100; i++) {
            sourceMutator.set(i, i * 10);
        }
        sourceMutator.setValueCount(100);

        NullableIntVector destVector = new NullableIntVector(nullableIntSchema, fixture.allocator());

        sourceVector.toNullable(destVector);

        assertEquals(0, sourceVector.getAccessor().getValueCount());
        NullableIntVector.Accessor destAccessor = destVector.getAccessor();
        assertEquals(100, destAccessor.getValueCount());
        for (int i = 0; i < 100; i++) {
            assertFalse(destAccessor.isNull(i));
            assertEquals(i * 10, destAccessor.get(i));
        }

        destVector.clear();

        // Don't clear the intVector, it should be empty.
        // If it is not, the test will fail with a memory leak error.
    }

    @SuppressWarnings("resource")
    @Test
    public void testVariableWidth() {
        MaterializedField nonNullableSchema = SchemaBuilder.columnSchema("a", MinorType.VARCHAR, DataMode.REQUIRED);
        VarCharVector nonNullableVector = new VarCharVector(nonNullableSchema, fixture.allocator());
        VarCharVector.Mutator mutator = nonNullableVector.getMutator();
        nonNullableVector.allocateNew(100, 20);
        byte value[] = new byte[20];
        for (int i = 0; i < 100; i++) {
            Arrays.fill(value, (byte) ('A' + i % 26));
            mutator.setSafe(i, value);
        }
        mutator.setValueCount(100);

        MaterializedField nullableVarCharSchema = SchemaBuilder.columnSchema("a", MinorType.VARCHAR,
                DataMode.OPTIONAL);
        NullableVarCharVector nullableVector = new NullableVarCharVector(nullableVarCharSchema,
                fixture.allocator());

        nonNullableVector.toNullable(nullableVector);

        assertEquals(0, nonNullableVector.getAccessor().getValueCount());
        NullableVarCharVector.Accessor nullableAccessor = nullableVector.getAccessor();
        assertEquals(100, nullableAccessor.getValueCount());
        for (int i = 0; i < 100; i++) {
            assertFalse(nullableAccessor.isNull(i));
            Arrays.fill(value, (byte) ('A' + i % 26));
            assertTrue(Arrays.areEqual(value, nullableAccessor.get(i)));
        }

        nullableVector.clear();

        // Don't clear the nonNullableVector, it should be empty.
        // If it is not, the test will fail with a memory leak error.
    }
}