{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/52829428","id":52829428,"diff_hunk":"@@ -0,0 +1,131 @@\n+/*\n+ * Licensed to the Apache Software Foundation (ASF) under one or more\n+ * contributor license agreements.  See the NOTICE file distributed with\n+ * this work for additional information regarding copyright ownership.\n+ * The ASF licenses this file to You under the Apache License, Version 2.0\n+ * (the \"License\"); you may not use this file except in compliance with\n+ * the License.  You may obtain a copy of the License at\n+ *\n+ *    http://www.apache.org/licenses/LICENSE-2.0\n+ *\n+ * Unless required by applicable law or agreed to in writing, software\n+ * distributed under the License is distributed on an \"AS IS\" BASIS,\n+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n+ * See the License for the specific language governing permissions and\n+ * limitations under the License.\n+ */\n+\n+package org.apache.spark.examples.ml;\n+\n+import org.apache.spark.SparkConf;\n+import org.apache.spark.api.java.JavaSparkContext;\n+import org.apache.spark.sql.SQLContext;\n+\n+// $example on$\n+import java.io.Serializable;\n+\n+import org.apache.spark.api.java.JavaRDD;\n+import org.apache.spark.api.java.function.Function;\n+import org.apache.spark.ml.evaluation.RegressionEvaluator;\n+import org.apache.spark.ml.recommendation.ALS;\n+import org.apache.spark.ml.recommendation.ALSModel;\n+import org.apache.spark.sql.DataFrame;\n+import org.apache.spark.sql.types.DataTypes;\n+// $example off$\n+\n+public class JavaALSExample {\n+\n+  // $example on$\n+  public static class Rating implements Serializable {\n+    private int userId;\n+    private int movieId;\n+    private float rating;\n+    private long timestamp;\n+\n+    public int getUserId() {\n+      return userId;\n+    }\n+\n+    public void setUserId(int userId) {","path":"examples/src/main/java/org/apache/spark/examples/ml/JavaALSExample.java","position":49,"original_position":49,"commit_id":"9021f36d767b00fb2942e01ac6caba53c1466152","original_commit_id":"9021f36d767b00fb2942e01ac6caba53c1466152","user":{"login":"BenFradet","id":1737211,"avatar_url":"https://avatars.githubusercontent.com/u/1737211?v=3","gravatar_id":"","url":"https://api.github.com/users/BenFradet","html_url":"https://github.com/BenFradet","followers_url":"https://api.github.com/users/BenFradet/followers","following_url":"https://api.github.com/users/BenFradet/following{/other_user}","gists_url":"https://api.github.com/users/BenFradet/gists{/gist_id}","starred_url":"https://api.github.com/users/BenFradet/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/BenFradet/subscriptions","organizations_url":"https://api.github.com/users/BenFradet/orgs","repos_url":"https://api.github.com/users/BenFradet/repos","events_url":"https://api.github.com/users/BenFradet/events{/privacy}","received_events_url":"https://api.github.com/users/BenFradet/received_events","type":"User","site_admin":false},"body":"AFAIK, spark SQL only supports JavaBean according to the doc: https://spark.apache.org/docs/latest/sql-programming-guide.html#inferring-the-schema-using-reflection.\r\n\r\nSo, public final fields with a constructor won't work.","created_at":"2016-02-13T15:40:55Z","updated_at":"2016-02-13T15:40:55Z","html_url":"https://github.com/apache/spark/pull/10411#discussion_r52829428","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/10411","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/52829428"},"html":{"href":"https://github.com/apache/spark/pull/10411#discussion_r52829428"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/10411"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/10411","id":54240625,"html_url":"https://github.com/apache/spark/pull/10411","diff_url":"https://github.com/apache/spark/pull/10411.diff","patch_url":"https://github.com/apache/spark/pull/10411.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/10411","number":10411,"state":"open","locked":false,"title":"[SPARK-12247] [ML] [DOC] Documentation for spark.ml's ALS and collaborative filtering in general","user":{"login":"BenFradet","id":1737211,"avatar_url":"https://avatars.githubusercontent.com/u/1737211?v=3","gravatar_id":"","url":"https://api.github.com/users/BenFradet","html_url":"https://github.com/BenFradet","followers_url":"https://api.github.com/users/BenFradet/followers","following_url":"https://api.github.com/users/BenFradet/following{/other_user}","gists_url":"https://api.github.com/users/BenFradet/gists{/gist_id}","starred_url":"https://api.github.com/users/BenFradet/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/BenFradet/subscriptions","organizations_url":"https://api.github.com/users/BenFradet/orgs","repos_url":"https://api.github.com/users/BenFradet/repos","events_url":"https://api.github.com/users/BenFradet/events{/privacy}","received_events_url":"https://api.github.com/users/BenFradet/received_events","type":"User","site_admin":false},"body":"This documents the implementation of ALS in `spark.ml` with example code in scala, java and python.","created_at":"2015-12-21T10:25:24Z","updated_at":"2016-02-13T15:40:55Z","closed_at":null,"merged_at":null,"merge_commit_sha":"4a6c01f2ca00de90056c27e84b057b1c93a0d607","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/10411/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/10411/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/10411/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/9021f36d767b00fb2942e01ac6caba53c1466152","head":{"label":"BenFradet:SPARK-12247","ref":"SPARK-12247","sha":"9021f36d767b00fb2942e01ac6caba53c1466152","user":{"login":"BenFradet","id":1737211,"avatar_url":"https://avatars.githubusercontent.com/u/1737211?v=3","gravatar_id":"","url":"https://api.github.com/users/BenFradet","html_url":"https://github.com/BenFradet","followers_url":"https://api.github.com/users/BenFradet/followers","following_url":"https://api.github.com/users/BenFradet/following{/other_user}","gists_url":"https://api.github.com/users/BenFradet/gists{/gist_id}","starred_url":"https://api.github.com/users/BenFradet/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/BenFradet/subscriptions","organizations_url":"https://api.github.com/users/BenFradet/orgs","repos_url":"https://api.github.com/users/BenFradet/repos","events_url":"https://api.github.com/users/BenFradet/events{/privacy}","received_events_url":"https://api.github.com/users/BenFradet/received_events","type":"User","site_admin":false},"repo":{"id":37543889,"name":"spark","full_name":"BenFradet/spark","owner":{"login":"BenFradet","id":1737211,"avatar_url":"https://avatars.githubusercontent.com/u/1737211?v=3","gravatar_id":"","url":"https://api.github.com/users/BenFradet","html_url":"https://github.com/BenFradet","followers_url":"https://api.github.com/users/BenFradet/followers","following_url":"https://api.github.com/users/BenFradet/following{/other_user}","gists_url":"https://api.github.com/users/BenFradet/gists{/gist_id}","starred_url":"https://api.github.com/users/BenFradet/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/BenFradet/subscriptions","organizations_url":"https://api.github.com/users/BenFradet/orgs","repos_url":"https://api.github.com/users/BenFradet/repos","events_url":"https://api.github.com/users/BenFradet/events{/privacy}","received_events_url":"https://api.github.com/users/BenFradet/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/BenFradet/spark","description":"Mirror 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