Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/14119#discussion_r70263657
--- Diff:
examples/src/main/java/org/apache/spark/examples/sql/JavaSqlDataSourceExample.java
---
@@ -0,0 +1,192 @@
+package org.apache.spark.examples.sql;
+
+// $example on:schema_merging$
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.List;
+// $example off:schema_merging$
+
+// $example on:basic_parquet_example$
+import org.apache.spark.api.java.function.MapFunction;
+import org.apache.spark.sql.Encoders;
+// import org.apache.spark.sql.Encoders;
+// $example on:schema_merging$
+// $example on:json_dataset$
+import org.apache.spark.sql.Dataset;
+import org.apache.spark.sql.Row;
+// $example off:json_dataset$
+// $example off:schema_merging$
+// $example off:basic_parquet_example$
+import org.apache.spark.sql.SparkSession;
+
+public class JavaSqlDataSourceExample {
+
+ // $example on:schema_merging$
+ public static class Square implements Serializable {
+ private int value;
+ private int square;
+
+ // Getters and setters...
+ // $example off:schema_merging$
+ public int getValue() {
+ return value;
+ }
+
+ public void setValue(int value) {
+ this.value = value;
+ }
+
+ public int getSquare() {
+ return square;
+ }
+
+ public void setSquare(int square) {
+ this.square = square;
+ }
+ // $example on:schema_merging$
+ }
+ // $example off:schema_merging$
+
+ // $example on:schema_merging$
+ public static class Cube implements Serializable {
+ private int value;
+ private int cube;
+
+ // Getters and setters...
+ // $example off:schema_merging$
+ public int getValue() {
+ return value;
+ }
+
+ public void setValue(int value) {
+ this.value = value;
+ }
+
+ public int getCube() {
+ return cube;
+ }
+
+ public void setCube(int cube) {
+ this.cube = cube;
+ }
+ // $example on:schema_merging$
+ }
+ // $example off:schema_merging$
+
+ public static void main(String[] args) {
+ SparkSession spark = SparkSession
+ .builder()
+ .appName("Java Spark SQL Data Sources Example")
+ .config("spark.some.config.option", "some-value")
+ .getOrCreate();
--- End diff --
Nit: Use 2-space indentation here.
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