org.apache.orc.mapred.TestOrcList.java Source code

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Here is the source code for org.apache.orc.mapred.TestOrcList.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.orc.mapred;

import org.apache.hadoop.io.DataInputBuffer;
import org.apache.hadoop.io.DataOutputBuffer;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
import org.apache.orc.TypeDescription;
import org.junit.Test;

import java.io.IOException;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;

public class TestOrcList {

    static void cloneWritable(Writable source, Writable destination) throws IOException {
        DataOutputBuffer out = new DataOutputBuffer(1024);
        source.write(out);
        out.flush();
        DataInputBuffer in = new DataInputBuffer();
        in.reset(out.getData(), out.getLength());
        destination.readFields(in);
    }

    @Test
    public void testRead() throws IOException {
        TypeDescription type = TypeDescription.createList(TypeDescription.createInt());
        OrcList<IntWritable> expected = new OrcList<>(type);
        OrcList<IntWritable> actual = new OrcList<>(type);
        expected.add(new IntWritable(123));
        expected.add(new IntWritable(456));
        expected.add(new IntWritable(789));
        assertNotEquals(expected, actual);
        cloneWritable(expected, actual);
        assertEquals(expected, actual);
        expected.clear();
        cloneWritable(expected, actual);
        assertEquals(expected, actual);
        expected.add(null);
        expected.add(new IntWritable(500));
        cloneWritable(expected, actual);
        assertEquals(expected, actual);
    }

    @Test
    public void testCompare() {
        TypeDescription schema = TypeDescription.fromString("array<string>");
        OrcList<Text> left = new OrcList<>(schema);
        assertEquals(-1, left.compareTo(null));
        OrcList<Text> right = new OrcList<>(schema);
        assertEquals(0, left.compareTo(right));
        assertEquals(0, right.compareTo(left));
        right.add(new Text("aa"));
        assertEquals(-1, left.compareTo(right));
        assertEquals(1, right.compareTo(left));
        left.add(new Text("aa"));
        assertEquals(0, left.compareTo(right));
        assertEquals(0, right.compareTo(left));
        left.add(new Text("bb"));
        right.add(new Text("cc"));
        assertEquals(-1, left.compareTo(right));
        assertEquals(1, right.compareTo(left));
        left.clear();
        right.clear();
        left.add(null);
        right.add(null);
        assertEquals(0, left.compareTo(right));
        assertEquals(0, right.compareTo(left));
        right.clear();
        right.add(new Text("ddd"));
        assertEquals(1, left.compareTo(right));
        assertEquals(-1, right.compareTo(left));
    }

    @Test
    public void testSchemaInCompare() {
        TypeDescription leftType = TypeDescription.fromString("array<int>");
        TypeDescription rightType = TypeDescription.fromString("array<string>");
        OrcList leftList = new OrcList(leftType);
        OrcList rightList = new OrcList(rightType);
        assertEquals(-4, leftList.compareTo(rightList));
        assertEquals(4, rightList.compareTo(leftList));
        leftList.add(new IntWritable(123));
        rightList.add(new Text("123"));
        assertEquals(-4, leftList.compareTo(rightList));
        assertEquals(4, rightList.compareTo(leftList));
    }
}