Java tutorial
/* * 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 me.yongshang.cbfm.test; import me.yongshang.cbfm.CBFM; import org.apache.commons.lang.ArrayUtils; import org.apache.parquet.io.api.Binary; import org.junit.Test; import java.io.*; import java.nio.ByteBuffer; import java.util.Arrays; import static org.junit.Assert.assertArrayEquals; import static org.junit.Assert.assertTrue; /** * Created by Yongshang Wu on 2016/10/18. */ public class CBFMTest { public static void main(String[] args) throws IOException { /* MessageType SCHEMA = MessageTypeParser.parseMessageType("" + "message m {" + " required binary b;" + " required int64 d;" + " }" + "}"); String[] PATH1 = {"b"}; ColumnDescriptor C1 = SCHEMA.getColumnDescription(PATH1); String[] PATH2 = {"d"}; ColumnDescriptor C2 = SCHEMA.getColumnDescription(PATH2); System.out.println(Arrays.toString(C1.getPath())); System.out.println(Arrays.toString(C2.getPath())); */ CBFM.DEBUG = true; CBFM.desired_false_positive_probability_ = 0.1; CBFM.setIndexedDimensions(new String[] { "a", "b", "c" }); CBFM.reducedimensions = new int[] { 3 }; CBFM cbfm = new CBFM(10000); // cbfm.insert(cbfm.calculateIdxsForInsert(new byte[][]{"Test".getBytes(),"String".getBytes(),"Convert".getBytes()})); // CBFM convertedCBFM = new CBFM(cbfm.compressTable()); } @Test public void testStringConvert() { CBFM.DEBUG = true; CBFM.desired_false_positive_probability_ = 0.1; CBFM.setIndexedDimensions(new String[] { "a", "b", "c" }); CBFM cbfm = new CBFM(1000); cbfm.insert(cbfm .calculateIdxsForInsert(new byte[][] { "Test".getBytes(), "The".getBytes(), "Shit".getBytes() })); CBFM convertedCBFM = new CBFM(cbfm.compressTable()); assertArrayEquals(cbfm.getTable(), convertedCBFM.getTable()); assertTrue(convertedCBFM.contains(convertedCBFM .calculateIdxsForSearch(new byte[][] { "Test".getBytes(), "The".getBytes(), "Shit".getBytes() }))); } @Test public void testBinary() { assertArrayEquals(Binary.fromString("Test").getBytes(), "Test".getBytes()); } @Test public void testBytes() { // System.out.println(Arrays.toString("Brand#13".getBytes())); // System.out.println(Arrays.toString(", even theodolites. regular, final theodolites eat after the carefully pending foxes. furiously regular deposits sleep slyly. carefully bold realms above the ironic dependencies haggle careful".getBytes() )); System.out.println("name1: " + Arrays.toString("Jack".getBytes())); System.out.println("\t" + Arrays.toString(Binary.fromString("Jack").getBytes())); System.out.println("name2: " + Arrays.toString("Jason".getBytes())); System.out.println("name3: " + Arrays.toString("James".getBytes())); System.out.println("name4: " + Arrays.toString("Someone".getBytes())); System.out.println("name5: " + Arrays.toString("Customer#000000003".getBytes())); System.out.println("name6: " + Arrays.toString("MG9kdTD2WBHm".getBytes())); System.out.println("name7: " + Arrays.toString("11-719-748-3364".getBytes())); System.out.println("name8: " + Arrays.toString( " deposits eat slyly ironic, even instructions. express foxes detect slyly. blithely even accounts abov" .getBytes())); System.out.println("age1: " + Arrays.toString(ByteBuffer.allocate(4).putInt(21).array())); byte[] age1 = ByteBuffer.allocate(4).putInt(21).array(); ArrayUtils.reverse(age1); System.out.println("\t" + Arrays.toString(age1)); System.out.println("age2: " + Arrays.toString(ByteBuffer.allocate(4).putInt(35).array())); System.out.println("age3: " + Arrays.toString(ByteBuffer.allocate(4).putInt(40).array())); System.out.println("age4: " + Arrays.toString(ByteBuffer.allocate(4).putInt(35).array())); System.out.println("balance1: " + Arrays.toString(ByteBuffer.allocate(8).putDouble(1000).array())); byte[] balance1 = ByteBuffer.allocate(8).putDouble(1000).array(); ArrayUtils.reverse(balance1); System.out.println("\t" + Arrays.toString(balance1)); System.out.println("balance2: " + Arrays.toString(ByteBuffer.allocate(8).putDouble(5000).array())); System.out.println("balance3: " + Arrays.toString(ByteBuffer.allocate(8).putDouble(2000).array())); System.out.println("balance4: " + Arrays.toString(ByteBuffer.allocate(8).putDouble(3000).array())); } }