UnsupportedOperationException reproduction for StreamingXlsxItemReader used with BeanWrapperRowMapper

Author: adrianpusty

spring-batch-excel-row-by-index-issue-reproduce/pom.xml

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>spring-batch-excel-row-by-index-issue-reproduce</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.1.2</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-to-slf4j</artifactId>
+            <version>2.20.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.26</version>
+            <scope>compile</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.batch</groupId>
+            <artifactId>spring-batch-core</artifactId>
+            <version>4.3.8</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-autoconfigure</artifactId>
+            <version>3.1.2</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.batch.extensions</groupId>
+            <artifactId>spring-batch-excel</artifactId>
+            <version>0.1.1</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi-ooxml</artifactId>
+            <version>5.2.3</version>
+        </dependency>
+    </dependencies>
+</project>

spring-batch-excel-row-by-index-issue-reproduce/src/main/java/org/example/RowByIndexNotSupportedReprod.java

@@ -0,0 +1,80 @@
+package org.example;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.batch.core.*;
+import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
+import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
+import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
+import org.springframework.batch.core.launch.JobLauncher;
+import org.springframework.batch.core.launch.support.RunIdIncrementer;
+import org.springframework.batch.core.repository.JobExecutionAlreadyRunningException;
+import org.springframework.batch.core.repository.JobInstanceAlreadyCompleteException;
+import org.springframework.batch.core.repository.JobRestartException;
+import org.springframework.batch.extensions.excel.mapping.BeanWrapperRowMapper;
+import org.springframework.batch.extensions.excel.streaming.StreamingXlsxItemReader;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.FileSystemResource;
+
+import java.net.URL;
+import java.util.Objects;
+
+@Configuration
+@SpringBootApplication
+@EnableBatchProcessing
+@RequiredArgsConstructor
+public class RowByIndexNotSupportedReprod
+{
+    private final JobBuilderFactory jobBuilderFactory;
+    private final StepBuilderFactory stepBuilderFactory;
+    private final JobLauncher jobLauncher;
+    public static void main(String[] args)
+    {
+        SpringApplication.run(RowByIndexNotSupportedReprod.class, args);
+    }
+
+    @Bean
+    public JobExecution createJob() throws JobInstanceAlreadyCompleteException, JobExecutionAlreadyRunningException, JobParametersInvalidException, JobRestartException
+    {
+        Job job = jobBuilderFactory.get("a_job")
+                .incrementer(new RunIdIncrementer())
+                .flow(createStep())
+                .end().build();
+        return jobLauncher.run(job, new JobParameters());
+    }
+
+    public Step createStep()
+    {
+        BeanWrapperRowMapper<MyIn> mapper = new BeanWrapperRowMapper<>();
+        mapper.setTargetType(MyIn.class);
+        StreamingXlsxItemReader<MyIn> reader = new StreamingXlsxItemReader<>();
+
+        FileSystemResource resource = resource("input.xlsx");
+
+        reader.setResource(resource);
+        reader.setRowMapper(mapper);
+        reader.setLinesToSkip(1);
+
+        return stepBuilderFactory.get("a_step")
+                .<MyIn, MyOut>chunk(10)
+                .reader(reader)
+                .writer(System.out::println)
+                .build();
+    }
+
+    private static FileSystemResource resource(String name)
+    {
+        URL url = RowByIndexNotSupportedReprod.class
+                .getClassLoader()
+                .getResource(name);
+
+        String file = Objects.requireNonNull(url).getFile();
+
+        return new FileSystemResource(file);
+    }
+}
+
+class MyIn {}
+class MyOut {}