| /* |
| * 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.iotdb.tsfile.encoding.decoder; |
| |
| import org.apache.iotdb.tsfile.encoding.encoder.Encoder; |
| import org.apache.iotdb.tsfile.encoding.encoder.FloatEncoder; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType; |
| import org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| public class FloatDecoderTest { |
| |
| private static final Logger logger = LoggerFactory.getLogger(FloatDecoderTest.class); |
| private final double delta = 0.0000001; |
| private final int floatMaxPointValue = 10000; |
| private final int floatMaxPointNumber = 4; |
| private final long doubleMaxPointValue = 1000000000000000L; |
| private final int doubleMaxPointNumber = 15; |
| private List<Float> floatList; |
| private List<Double> doubleList; |
| |
| @Before |
| public void setUp() { |
| floatList = new ArrayList<Float>(); |
| int hybridCount = 11; |
| int hybridNum = 5; |
| int hybridStart = 20; |
| for (int i = 0; i < hybridNum; i++) { |
| for (int j = 0; j < hybridCount; j++) { |
| floatList.add((float) hybridStart / floatMaxPointValue); |
| hybridStart += 3; |
| } |
| for (int j = 0; j < hybridCount; j++) { |
| floatList.add((float) hybridStart / floatMaxPointValue); |
| } |
| hybridCount += 2; |
| } |
| |
| doubleList = new ArrayList<Double>(); |
| int hybridCountDouble = 11; |
| int hybridNumDouble = 5; |
| long hybridStartDouble = 20; |
| |
| for (int i = 0; i < hybridNumDouble; i++) { |
| for (int j = 0; j < hybridCountDouble; j++) { |
| doubleList.add((double) hybridStartDouble / doubleMaxPointValue); |
| hybridStart += 3; |
| } |
| for (int j = 0; j < hybridCountDouble; j++) { |
| doubleList.add((double) hybridStartDouble / doubleMaxPointValue); |
| } |
| hybridCountDouble += 2; |
| } |
| } |
| |
| @After |
| public void tearDown() {} |
| |
| @Test |
| public void testRLEFloat() throws Exception { |
| for (int i = 1; i <= 10; i++) { |
| testFloatLength(TSEncoding.RLE, floatList, floatMaxPointNumber, false, i); |
| } |
| } |
| |
| @Test |
| public void testRLEDouble() throws Exception { |
| for (int i = 1; i <= 10; i++) { |
| testDoubleLength(TSEncoding.RLE, doubleList, doubleMaxPointNumber, false, i); |
| } |
| } |
| |
| @Test |
| public void testDIFFFloat() throws Exception { |
| for (int i = 1; i <= 10; i++) { |
| testFloatLength(TSEncoding.TS_2DIFF, floatList, floatMaxPointNumber, false, i); |
| } |
| } |
| |
| @Test |
| public void testDIFFDouble() throws Exception { |
| for (int i = 1; i <= 10; i++) { |
| testDoubleLength(TSEncoding.TS_2DIFF, doubleList, doubleMaxPointNumber, false, i); |
| } |
| } |
| |
| // @Test |
| // public void testBigDecimal() throws Exception { |
| // for (int i = 1; i <= 5; i++) { |
| // testDecimalLenght(TSEncoding.TS_2DIFF, doubleList, doubleMaxPointNumber, |
| // false, i); |
| // testDecimalLenght(TSEncoding.RLE, doubleList, doubleMaxPointNumber, false, |
| // i); |
| // } |
| // } |
| |
| @Test |
| public void test() throws Exception { |
| |
| float value = 7.101f; |
| Encoder encoder = new FloatEncoder(TSEncoding.RLE, TSDataType.FLOAT, 3); |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| encoder.encode(value, baos); |
| encoder.flush(baos); |
| encoder.encode(value + 2, baos); |
| encoder.flush(baos); |
| ByteBuffer buffer = ByteBuffer.wrap(baos.toByteArray()); |
| Decoder decoder1 = new FloatDecoder(TSEncoding.RLE, TSDataType.FLOAT); |
| Decoder decoder2 = new FloatDecoder(TSEncoding.RLE, TSDataType.FLOAT); |
| float value1_ = decoder1.readFloat(buffer); |
| float value2_ = decoder2.readFloat(buffer); |
| assertEquals(value, value1_, delta); |
| assertEquals(value + 2, value2_, delta); |
| logger.debug("{} // {}", value, value1_); |
| logger.debug("{} // {}", value + 2, value2_); |
| } |
| |
| private void testFloatLength( |
| TSEncoding encoding, |
| List<Float> valueList, |
| int maxPointValue, |
| boolean isDebug, |
| int repeatCount) |
| throws Exception { |
| Encoder encoder = new FloatEncoder(encoding, TSDataType.FLOAT, maxPointValue); |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| for (int i = 0; i < repeatCount; i++) { |
| for (float value : valueList) { |
| encoder.encode(value, baos); |
| } |
| encoder.flush(baos); |
| } |
| |
| ByteBuffer buffer = ByteBuffer.wrap(baos.toByteArray()); |
| |
| for (int i = 0; i < repeatCount; i++) { |
| Decoder decoder = new FloatDecoder(encoding, TSDataType.FLOAT); |
| for (float value : valueList) { |
| float value_ = decoder.readFloat(buffer); |
| if (isDebug) { |
| logger.debug("{} // {}", value_, value); |
| } |
| assertEquals(value, value_, delta); |
| } |
| } |
| } |
| |
| private void testDoubleLength( |
| TSEncoding encoding, |
| List<Double> valueList, |
| int maxPointValue, |
| boolean isDebug, |
| int repeatCount) |
| throws Exception { |
| Encoder encoder = new FloatEncoder(encoding, TSDataType.DOUBLE, maxPointValue); |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| for (int i = 0; i < repeatCount; i++) { |
| for (double value : valueList) { |
| encoder.encode(value, baos); |
| } |
| encoder.flush(baos); |
| } |
| |
| ByteBuffer buffer = ByteBuffer.wrap(baos.toByteArray()); |
| |
| for (int i = 0; i < repeatCount; i++) { |
| Decoder decoder = new FloatDecoder(encoding, TSDataType.DOUBLE); |
| for (double value : valueList) { |
| double value_ = decoder.readDouble(buffer); |
| if (isDebug) { |
| logger.debug("{} // {}", value_, value); |
| } |
| assertEquals(value, value_, delta); |
| } |
| } |
| } |
| |
| // private void testDecimalLenght(TSEncoding encoding, List<Double> valueList, |
| // int maxPointValue, |
| // boolean isDebug, int repeatCount) throws Exception { |
| // Encoder encoder = new FloatEncoder(encoding, TSDataType.BIGDECIMAL, |
| // maxPointValue); |
| // ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| // for (int i = 0; i < repeatCount; i++) { |
| // for (double value : valueList) { |
| // encoder.encode(new BigDecimal(value), baos); |
| // } |
| // encoder.flush(baos); |
| // } |
| // logger.debug("Repeated {} encoding done ", repeatCount); |
| // ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray()); |
| // |
| // for (int i = 0; i < repeatCount; i++) { |
| // Decoder decoder = new FloatDecoder(encoding, TSDataType.BIGDECIMAL); |
| // for (double value : valueList) { |
| // double value_ = decoder.readBigDecimal(bais).doubleValue(); |
| // if (isDebug) { |
| // logger.debug("{} // {}", value_, value); |
| // } |
| // assertEquals(value, value_, delta); |
| // } |
| // logger.debug("Repeated {} turn ", repeatCount, i); |
| // } |
| // } |
| } |