/* * 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.spark.examples.ml; import org.apache.spark.sql.SparkSession; // $example on$ import java.util.Arrays; import java.util.List; import org.apache.spark.ml.feature.StopWordsRemover; import org.apache.spark.sql.Dataset; import org.apache.spark.sql.Row; import org.apache.spark.sql.RowFactory; import org.apache.spark.sql.types.DataTypes; import org.apache.spark.sql.types.Metadata; import org.apache.spark.sql.types.StructField; import org.apache.spark.sql.types.StructType; // $example off$ public class JavaStopWordsRemoverExample { public static void main(String[] args) { SparkSession spark = SparkSession .builder() .appName("JavaStopWordsRemoverExample") .getOrCreate(); // $example on$ StopWordsRemover remover = new StopWordsRemover() .setInputCol("raw") .setOutputCol("filtered"); List<Row> data = Arrays.asList( RowFactory.create(Arrays.asList("I", "saw", "the", "red", "balloon")), RowFactory.create(Arrays.asList("Mary", "had", "a", "little", "lamb")) ); StructType schema = new StructType(new StructField[]{ new StructField( "raw", DataTypes.createArrayType(DataTypes.StringType), false, Metadata.empty()) }); Dataset<Row> dataset = spark.createDataFrame(data, schema); remover.transform(dataset).show(false); // $example off$ spark.stop(); } }