/**
* Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
*
* 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.linkedin.pinot.index.reader;
import com.linkedin.pinot.common.segment.ReadMode;
import com.linkedin.pinot.core.segment.memory.PinotDataBuffer;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.RandomAccessFile;
import java.nio.channels.FileChannel;
import java.util.Random;
import org.testng.Assert;
import org.testng.annotations.Test;
import com.linkedin.pinot.core.io.reader.impl.FixedByteSingleValueMultiColReader;
@Test
public class FixedByteWidthRowColDataFileReaderTest {
@Test
void testSingleCol() throws Exception {
String fileName = "test_single_col.dat";
File f = new File(fileName);
f.delete();
DataOutputStream dos = new DataOutputStream(new FileOutputStream(f));
int[] data = new int[100];
Random r = new Random();
for (int i = 0; i < data.length; i++) {
data[i] = r.nextInt();
dos.writeInt(data[i]);
}
dos.flush();
dos.close();
RandomAccessFile raf = new RandomAccessFile(f, "rw");
// System.out.println("file size: " + raf.getChannel().size());
raf.close();
PinotDataBuffer heapBuffer = PinotDataBuffer.fromFile(f, ReadMode.heap, FileChannel.MapMode.READ_ONLY, "testing");
FixedByteSingleValueMultiColReader heapReader =
new FixedByteSingleValueMultiColReader(heapBuffer, data.length, new int[] { 4 });
heapReader.open();
for (int i = 0; i < data.length; i++) {
Assert.assertEquals(heapReader.getInt(i, 0), data[i]);
}
heapBuffer.close();
heapReader.close();
// Not strictly required. Let the tests pass first...then we can remove
// TODO: remove me
PinotDataBuffer mmapBuffer = PinotDataBuffer.fromFile(f, ReadMode.mmap, FileChannel.MapMode.READ_ONLY, "mmap_testing");
FixedByteSingleValueMultiColReader mmapReader =
new FixedByteSingleValueMultiColReader(mmapBuffer, data.length, new int[] { 4 });
mmapReader.open();
for (int i = 0; i < data.length; i++) {
Assert.assertEquals(mmapReader.getInt(i, 0), data[i]);
}
mmapBuffer.close();
mmapReader.close();
f.delete();
}
@Test
void testMultiCol() throws Exception {
String fileName = "test_single_col.dat";
File f = new File(fileName);
f.delete();
DataOutputStream dos = new DataOutputStream(new FileOutputStream(f));
int numRows = 100;
int numCols = 2;
int[][] colData = new int[numRows][numCols];
Random r = new Random();
for (int i = 0; i < numRows; i++) {
colData[i] = new int[numCols];
for (int j = 0; j < numCols; j++) {
colData[i][j] = r.nextInt();
dos.writeInt(colData[i][j]);
}
}
dos.flush();
dos.close();
RandomAccessFile raf = new RandomAccessFile(f, "rw");
// System.out.println("file size: " + raf.getChannel().size());
raf.close();
PinotDataBuffer heapBuffer = PinotDataBuffer.fromFile(f, ReadMode.heap, FileChannel.MapMode.READ_ONLY, "testing-heap");
FixedByteSingleValueMultiColReader heapReader = new FixedByteSingleValueMultiColReader(heapBuffer, numRows, new int[] { 4, 4 });
heapReader.open();
for (int i = 0; i < numRows; i++) {
for (int j = 0; j < numCols; j++) {
Assert.assertEquals(heapReader.getInt(i, j), colData[i][j]);
}
}
heapReader.close();
PinotDataBuffer mmapBuffer = PinotDataBuffer.fromFile(f, ReadMode.mmap, FileChannel.MapMode.READ_ONLY, "mmap_testing");
FixedByteSingleValueMultiColReader mmapReader = new FixedByteSingleValueMultiColReader(mmapBuffer, numRows, new int[] { 4, 4 });
mmapReader.open();
for (int i = 0; i < numRows; i++) {
for (int j = 0; j < numCols; j++) {
Assert.assertEquals(mmapReader.getInt(i, j), colData[i][j]);
}
}
mmapReader.close();
f.delete();
}
}