├── src └── main │ ├── java │ └── org │ │ └── apache │ │ └── zeppelin │ │ └── flink │ │ └── udf │ │ ├── Top2Accum.java │ │ ├── WeightedAvgAccum.java │ │ ├── JavaUpper.java │ │ ├── JavaSplit.java │ │ ├── WeightedAvg.java │ │ └── Top2.java │ ├── scala │ └── org │ │ └── apache │ │ └── zeppelin │ │ └── flink │ │ └── udf │ │ ├── ScalaUpper.scala │ │ └── ScalaSplit.scala │ └── resources │ └── log4j.properties ├── .gitignore ├── pom.xml └── LICENSE /src/main/java/org/apache/zeppelin/flink/udf/Top2Accum.java: -------------------------------------------------------------------------------- 1 | package org.apache.zeppelin.flink.udf; 2 | 3 | /** 4 | * Accumulator for Top2. 5 | */ 6 | public class Top2Accum { 7 | public Integer first; 8 | public Integer second; 9 | } 10 | 11 | 12 | -------------------------------------------------------------------------------- /src/main/java/org/apache/zeppelin/flink/udf/WeightedAvgAccum.java: -------------------------------------------------------------------------------- 1 | package org.apache.zeppelin.flink.udf; 2 | 3 | /** 4 | * Accumulator for WeightedAvg. 5 | */ 6 | public class WeightedAvgAccum { 7 | public long sum = 0; 8 | public int count = 0; 9 | } 10 | -------------------------------------------------------------------------------- /src/main/scala/org/apache/zeppelin/flink/udf/ScalaUpper.scala: -------------------------------------------------------------------------------- 1 | package org.apache.zeppelin.flink.udf 2 | 3 | import org.apache.flink.table.functions.ScalarFunction 4 | 5 | class ScalaUpper extends ScalarFunction { 6 | def eval(str: String) = str.toUpperCase 7 | } 8 | -------------------------------------------------------------------------------- /src/main/java/org/apache/zeppelin/flink/udf/JavaUpper.java: -------------------------------------------------------------------------------- 1 | package org.apache.zeppelin.flink.udf; 2 | 3 | import org.apache.flink.table.functions.ScalarFunction; 4 | 5 | public class JavaUpper extends ScalarFunction { 6 | public String eval(String str) { 7 | return str.toUpperCase(); 8 | } 9 | } 10 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | <<<<<<< HEAD 2 | # Compiled class file 3 | *.class 4 | 5 | # Log file 6 | *.log 7 | 8 | # BlueJ files 9 | *.ctxt 10 | 11 | # Mobile Tools for Java (J2ME) 12 | .mtj.tmp/ 13 | 14 | # Package Files # 15 | *.jar 16 | *.war 17 | *.nar 18 | *.ear 19 | *.zip 20 | *.tar.gz 21 | *.rar 22 | 23 | # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml 24 | hs_err_pid* 25 | ======= 26 | target/ 27 | .idea/ 28 | 29 | >>>>>>> initial commit 30 | -------------------------------------------------------------------------------- /src/main/scala/org/apache/zeppelin/flink/udf/ScalaSplit.scala: -------------------------------------------------------------------------------- 1 | package org.apache.zeppelin.flink.udf 2 | 3 | import org.apache.flink.table.functions.TableFunction 4 | 5 | // The generic type "(String, Int)" determines the schema of the returned table as (String, Integer). 6 | class ScalaSplit extends TableFunction[(String, Int)] { 7 | def eval(str: String): Unit = { 8 | // use collect(...) to emit a row. 9 | str.split("#").foreach(x => collect((x, x.length))) 10 | } 11 | } 12 | -------------------------------------------------------------------------------- /src/main/java/org/apache/zeppelin/flink/udf/JavaSplit.java: -------------------------------------------------------------------------------- 1 | package org.apache.zeppelin.flink.udf; 2 | 3 | import org.apache.flink.table.functions.TableFunction; 4 | 5 | import java.util.Arrays; 6 | 7 | public class JavaSplit extends TableFunction { 8 | public void eval(String str) { 9 | // use collect(...) to emit a row. 10 | // str.split("#").foreach(x => collect((x, x.length))) 11 | Arrays.stream(str.split("#")).forEach(x -> { 12 | collect(x); 13 | }); 14 | } 15 | } 16 | -------------------------------------------------------------------------------- /src/main/resources/log4j.properties: -------------------------------------------------------------------------------- 1 | ################################################################################ 2 | # Licensed to the Apache Software Foundation (ASF) under one 3 | # or more contributor license agreements. See the NOTICE file 4 | # distributed with this work for additional information 5 | # regarding copyright ownership. The ASF licenses this file 6 | # to you under the Apache License, Version 2.0 (the 7 | # "License"); you may not use this file except in compliance 8 | # with the License. You may obtain a copy of the License at 9 | # 10 | # http://www.apache.org/licenses/LICENSE-2.0 11 | # 12 | # Unless required by applicable law or agreed to in writing, software 13 | # distributed under the License is distributed on an "AS IS" BASIS, 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 | # See the License for the specific language governing permissions and 16 | # limitations under the License. 17 | ################################################################################ 18 | 19 | log4j.rootLogger=INFO, console 20 | 21 | log4j.appender.console=org.apache.log4j.ConsoleAppender 22 | log4j.appender.console.layout=org.apache.log4j.PatternLayout 23 | log4j.appender.console.layout.ConversionPattern=%d{HH:mm:ss,SSS} %-5p %-60c %x - %m%n 24 | -------------------------------------------------------------------------------- /src/main/java/org/apache/zeppelin/flink/udf/WeightedAvg.java: -------------------------------------------------------------------------------- 1 | package org.apache.zeppelin.flink.udf; 2 | 3 | import org.apache.flink.table.functions.AggregateFunction; 4 | 5 | import java.util.Iterator; 6 | 7 | /** 8 | * Weighted Average user-defined aggregate function. 9 | */ 10 | public class WeightedAvg extends AggregateFunction { 11 | 12 | @Override 13 | public WeightedAvgAccum createAccumulator() { 14 | return new WeightedAvgAccum(); 15 | } 16 | 17 | @Override 18 | public Long getValue(WeightedAvgAccum acc) { 19 | if (acc.count == 0) { 20 | return null; 21 | } else { 22 | return acc.sum / acc.count; 23 | } 24 | } 25 | 26 | public void accumulate(WeightedAvgAccum acc, long iValue, int iWeight) { 27 | acc.sum += iValue * iWeight; 28 | acc.count += iWeight; 29 | } 30 | 31 | public void retract(WeightedAvgAccum acc, long iValue, int iWeight) { 32 | acc.sum -= iValue * iWeight; 33 | acc.count -= iWeight; 34 | } 35 | 36 | public void merge(WeightedAvgAccum acc, Iterable it) { 37 | Iterator iter = it.iterator(); 38 | while (iter.hasNext()) { 39 | WeightedAvgAccum a = iter.next(); 40 | acc.count += a.count; 41 | acc.sum += a.sum; 42 | } 43 | } 44 | 45 | public void resetAccumulator(WeightedAvgAccum acc) { 46 | acc.count = 0; 47 | acc.sum = 0L; 48 | } 49 | } 50 | -------------------------------------------------------------------------------- /src/main/java/org/apache/zeppelin/flink/udf/Top2.java: -------------------------------------------------------------------------------- 1 | package org.apache.zeppelin.flink.udf; 2 | 3 | import org.apache.flink.api.java.tuple.Tuple2; 4 | import org.apache.flink.table.functions.TableAggregateFunction; 5 | import org.apache.flink.util.Collector; 6 | 7 | /** 8 | * The top2 user-defined table aggregate function. 9 | */ 10 | public class Top2 extends TableAggregateFunction, Top2Accum> { 11 | 12 | @Override 13 | public Top2Accum createAccumulator() { 14 | Top2Accum acc = new Top2Accum(); 15 | acc.first = Integer.MIN_VALUE; 16 | acc.second = Integer.MIN_VALUE; 17 | return acc; 18 | } 19 | 20 | 21 | public void accumulate(Top2Accum acc, Integer v) { 22 | if (v > acc.first) { 23 | acc.second = acc.first; 24 | acc.first = v; 25 | } else if (v > acc.second) { 26 | acc.second = v; 27 | } 28 | } 29 | 30 | public void merge(Top2Accum acc, java.lang.Iterable iterable) { 31 | for (Top2Accum otherAcc : iterable) { 32 | accumulate(acc, otherAcc.first); 33 | accumulate(acc, otherAcc.second); 34 | } 35 | } 36 | 37 | public void emitValue(Top2Accum acc, Collector> out) { 38 | // emit the value and rank 39 | if (acc.first != Integer.MIN_VALUE) { 40 | out.collect(Tuple2.of(acc.first, 1)); 41 | } 42 | if (acc.second != Integer.MIN_VALUE) { 43 | out.collect(Tuple2.of(acc.second, 2)); 44 | } 45 | } 46 | } 47 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 19 | 22 | 4.0.0 23 | 24 | org.apache.zjffdu 25 | flink-udf 26 | 1.0-SNAPSHOT 27 | jar 28 | 29 | Flink UDF 30 | http://www.myorganization.org 31 | 32 | 33 | 34 | apache.snapshots 35 | Apache Development Snapshot Repository 36 | https://repository.apache.org/content/repositories/snapshots/ 37 | 38 | false 39 | 40 | 41 | true 42 | 43 | 44 | 45 | 46 | 47 | UTF-8 48 | 1.10.0 49 | 2.11 50 | 2.11.12 51 | 52 | 53 | 54 | 55 | 56 | org.apache.flink 57 | flink-java 58 | ${flink.version} 59 | 60 | 61 | 62 | org.apache.flink 63 | flink-table-common 64 | ${flink.version} 65 | provided 66 | 67 | 68 | 69 | 70 | org.scala-lang 71 | scala-library 72 | ${scala.version} 73 | provided 74 | 75 | 76 | 77 | 78 | 79 | 80 | org.slf4j 81 | slf4j-log4j12 82 | 1.7.7 83 | runtime 84 | 85 | 86 | log4j 87 | log4j 88 | 1.2.17 89 | runtime 90 | 91 | 92 | 93 | junit 94 | junit 95 | 4.12 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | org.apache.maven.plugins 104 | maven-compiler-plugin 105 | 3.1 106 | 107 | 1.8 108 | 1.8 109 | 110 | 111 | 112 | 113 | 114 | net.alchim31.maven 115 | scala-maven-plugin 116 | 3.2.2 117 | 118 | 119 | 120 | compile 121 | testCompile 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | org.apache.maven.plugins 130 | maven-eclipse-plugin 131 | 2.8 132 | 133 | true 134 | 135 | org.scala-ide.sdt.core.scalanature 136 | org.eclipse.jdt.core.javanature 137 | 138 | 139 | org.scala-ide.sdt.core.scalabuilder 140 | 141 | 142 | org.scala-ide.sdt.launching.SCALA_CONTAINER 143 | org.eclipse.jdt.launching.JRE_CONTAINER 144 | 145 | 146 | org.scala-lang:scala-library 147 | org.scala-lang:scala-compiler 148 | 149 | 150 | **/*.scala 151 | **/*.java 152 | 153 | 154 | 155 | 156 | org.codehaus.mojo 157 | build-helper-maven-plugin 158 | 1.7 159 | 160 | 161 | 162 | add-source 163 | generate-sources 164 | 165 | add-source 166 | 167 | 168 | 169 | src/main/scala 170 | 171 | 172 | 173 | 174 | 175 | add-test-source 176 | generate-test-sources 177 | 178 | add-test-source 179 | 180 | 181 | 182 | src/test/scala 183 | 184 | 185 | 186 | 187 | 188 | 189 | 190 | 191 | 192 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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