adding java based spring batch configuration

spring-batch-intro/pom.xml

@@ -12,7 +12,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<spring.version>4.0.2.RELEASE</spring.version>
+        <spring.version>4.2.0.RELEASE</spring.version>
         <spring.batch.version>3.0.5.RELEASE</spring.batch.version>
         <sqlite.version>3.8.11.2</sqlite.version>
     </properties>
@@ -34,7 +34,6 @@
             <artifactId>spring-jdbc</artifactId>
             <version>${spring.version}</version>
         </dependency>
-
         <dependency>
             <groupId>org.springframework.batch</groupId>
             <artifactId>spring-batch-core</artifactId>

spring-batch-intro/src/main/java/org/baeldung/spring_batch_intro/App.java

@@ -1,17 +1,27 @@
 package org.baeldung.spring_batch_intro;
 
+import javax.swing.Spring;
+
 import org.springframework.batch.core.Job;
 import org.springframework.batch.core.JobExecution;
 import org.springframework.batch.core.JobParameters;
 import org.springframework.batch.core.launch.JobLauncher;
 import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
 public class App {
     public static void main(String[] args) {
+        // Spring Java config
+         AnnotationConfigApplicationContext context = new
+         AnnotationConfigApplicationContext();
+         context.register(SpringConfig.class);
+         context.register(SpringBatchConfig.class);
+         context.refresh();
 
-		ApplicationContext context = new ClassPathXmlApplicationContext(
+        // Spring xml config
-				"/spring-batch-intro.xml");
+//        ApplicationContext context = new ClassPathXmlApplicationContext(
+//                "spring-batch-intro.xml");
 
         JobLauncher jobLauncher = (JobLauncher) context.getBean("jobLauncher");
         Job job = (Job) context.getBean("firstBatchJob");

spring-batch-intro/src/main/java/org/baeldung/spring_batch_intro/SpringBatchConfig.java

@@ -0,0 +1,92 @@
+package org.baeldung.spring_batch_intro;
+
+import java.net.MalformedURLException;
+import java.text.ParseException;
+
+import org.baeldung.spring_batch_intro.model.Transaction;
+import org.baeldung.spring_batch_intro.service.CustomItemProcessor;
+import org.baeldung.spring_batch_intro.service.RecordFieldSetMapper;
+import org.springframework.batch.core.Job;
+import org.springframework.batch.core.Step;
+import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
+import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
+import org.springframework.batch.item.ItemProcessor;
+import org.springframework.batch.item.ItemReader;
+import org.springframework.batch.item.ItemWriter;
+import org.springframework.batch.item.UnexpectedInputException;
+import org.springframework.batch.item.file.FlatFileItemReader;
+import org.springframework.batch.item.file.mapping.DefaultLineMapper;
+import org.springframework.batch.item.file.transform.DelimitedLineTokenizer;
+import org.springframework.batch.item.xml.StaxEventItemWriter;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.core.io.Resource;
+import org.springframework.oxm.Marshaller;
+import org.springframework.oxm.jaxb.Jaxb2Marshaller;
+
+public class SpringBatchConfig {
+    @Autowired
+    private JobBuilderFactory jobs;
+
+    @Autowired
+    private StepBuilderFactory steps;
+
+    @Value("input/record.csv")
+    private Resource inputCsv;
+
+    @Value("file:xml/output.xml")
+    private Resource outputXml;
+
+    @Bean
+    public ItemReader<Transaction> itemReader()
+            throws UnexpectedInputException, ParseException, Exception {
+        FlatFileItemReader<Transaction> reader = new FlatFileItemReader<Transaction>();
+        DelimitedLineTokenizer tokenizer = new DelimitedLineTokenizer();
+        String[] tokens = { "username", "userid", "transactiondate", "amount" };
+        tokenizer.setNames(tokens);
+        reader.setResource(inputCsv);
+        DefaultLineMapper<Transaction> lineMapper = new DefaultLineMapper<Transaction>();
+        lineMapper.setLineTokenizer(tokenizer);
+        lineMapper.setFieldSetMapper(new RecordFieldSetMapper());
+        reader.setLineMapper(lineMapper);
+        return reader;
+    }
+
+    @Bean
+    public ItemProcessor<Transaction, Transaction> itemProcessor() {
+        return new CustomItemProcessor();
+    }
+
+    @Bean
+    public ItemWriter<Transaction> itemWriter(Marshaller marshaller)
+            throws MalformedURLException {
+        StaxEventItemWriter<Transaction> itemWriter = new StaxEventItemWriter<Transaction>();
+        itemWriter.setMarshaller(marshaller);
+        itemWriter.setRootTagName("transactionRecord");
+        itemWriter.setResource(outputXml);
+        return itemWriter;
+    }
+
+    @Bean
+    public Marshaller marshaller() {
+        Jaxb2Marshaller marshaller = new Jaxb2Marshaller();
+        marshaller.setClassesToBeBound(new Class[] { Transaction.class });
+        return marshaller;
+    }
+
+    @Bean
+    protected Step step1(ItemReader<Transaction> reader,
+            ItemProcessor<Transaction, Transaction> processor,
+            ItemWriter<Transaction> writer) {
+        return steps.get("step1").<Transaction, Transaction> chunk(10)
+                .reader(reader).processor(processor).writer(writer).build();
+    }
+
+    @Bean(name = "firstBatchJob")
+    public Job job(@Qualifier("step1") Step step1) {
+        return jobs.get("firstBatchJob").start(step1).build();
+    }
+
+}

spring-batch-intro/src/main/java/org/baeldung/spring_batch_intro/SpringConfig.java

@@ -0,0 +1,75 @@
+package org.baeldung.spring_batch_intro;
+
+import java.net.MalformedURLException;
+
+import javax.sql.DataSource;
+
+import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
+import org.springframework.batch.core.launch.JobLauncher;
+import org.springframework.batch.core.launch.support.SimpleJobLauncher;
+import org.springframework.batch.core.repository.JobRepository;
+import org.springframework.batch.core.repository.support.JobRepositoryFactoryBean;
+import org.springframework.batch.support.transaction.ResourcelessTransactionManager;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.Resource;
+import org.springframework.jdbc.datasource.DriverManagerDataSource;
+import org.springframework.jdbc.datasource.init.DataSourceInitializer;
+import org.springframework.jdbc.datasource.init.ResourceDatabasePopulator;
+import org.springframework.transaction.PlatformTransactionManager;
+
+@Configuration
+@EnableBatchProcessing
+public class SpringConfig {
+
+    @Value("org/springframework/batch/core/schema-drop-sqlite.sql")
+    private Resource dropReopsitoryTables;
+
+    @Value("org/springframework/batch/core/schema-sqlite.sql")
+    private Resource dataReopsitorySchema;
+
+    @Bean
+    public DataSource dataSource() {
+        DriverManagerDataSource dataSource = new DriverManagerDataSource();
+        dataSource.setDriverClassName("org.sqlite.JDBC");
+        dataSource.setUrl("jdbc:sqlite:repository.sqlite");
+        return dataSource;
+    }
+
+    @Bean
+    public DataSourceInitializer dataSourceInitializer(DataSource dataSource)
+            throws MalformedURLException {
+        ResourceDatabasePopulator databasePopulator = new ResourceDatabasePopulator();
+
+        databasePopulator.addScript(dropReopsitoryTables);
+        databasePopulator.addScript(dataReopsitorySchema);
+        databasePopulator.setIgnoreFailedDrops(true);
+
+        DataSourceInitializer initializer = new DataSourceInitializer();
+        initializer.setDataSource(dataSource);
+        initializer.setDatabasePopulator(databasePopulator);
+
+        return initializer;
+    }
+
+    private JobRepository getJobRepository() throws Exception {
+        JobRepositoryFactoryBean factory = new JobRepositoryFactoryBean();
+        factory.setDataSource(dataSource());
+        factory.setTransactionManager(getTransactionManager());
+        factory.afterPropertiesSet();
+        return (JobRepository) factory.getObject();
+    }
+
+    private PlatformTransactionManager getTransactionManager() {
+        return new ResourcelessTransactionManager();
+    }
+
+    public JobLauncher getJobLauncher() throws Exception {
+        SimpleJobLauncher jobLauncher = new SimpleJobLauncher();
+        jobLauncher.setJobRepository(getJobRepository());
+        jobLauncher.afterPropertiesSet();
+        return jobLauncher;
+    }
+
+}

spring-batch-intro/src/main/java/org/baeldung/spring_batch_intro/service/CustomItemProcessor.java

@@ -1,13 +1,12 @@
 package org.baeldung.spring_batch_intro.service;
 
-
 import org.baeldung.spring_batch_intro.model.Transaction;
 import org.springframework.batch.item.ItemProcessor;
 
-public class CustomItemProcessor implements ItemProcessor<Transaction, Transaction> {
+public class CustomItemProcessor implements
+        ItemProcessor<Transaction, Transaction> {
 
     public Transaction process(Transaction item) throws Exception {
-		
         System.out.println("Processing..." + item);
         return item;
     }

spring-batch-intro/src/main/resources/spring-batch-intro.xml

@@ -3,23 +3,26 @@
     xsi:schemaLocation="http://www.springframework.org/schema/batch
 		http://www.springframework.org/schema/batch/spring-batch-3.0.xsd
 		http://www.springframework.org/schema/beans 
-		http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
+		http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
 	">
 
     <import resource="spring.xml" />
 
     <bean id="record" class="org.baeldung.spring_batch_intro.model.Transaction"></bean>
 
-	<bean id="itemReader" class="org.springframework.batch.item.file.FlatFileItemReader">
+    <bean id="itemReader"
+        class="org.springframework.batch.item.file.FlatFileItemReader">
 
         <property name="resource" value="input/record.csv" />
 
         <property name="lineMapper">
-			<bean class="org.springframework.batch.item.file.mapping.DefaultLineMapper">
+            <bean
+                class="org.springframework.batch.item.file.mapping.DefaultLineMapper">
                 <property name="lineTokenizer">
                     <bean
                         class="org.springframework.batch.item.file.transform.DelimitedLineTokenizer">
-						<property name="names" value="username,userid,transactiondate,amount" />
+                        <property name="names"
+                            value="username,userid,transactiondate,amount" />
                     </bean>
                 </property>
                 <property name="fieldSetMapper">
@@ -34,7 +37,8 @@
     <bean id="itemProcessor"
         class="org.baeldung.spring_batch_intro.service.CustomItemProcessor" />
 
-	<bean id="itemWriter" class="org.springframework.batch.item.xml.StaxEventItemWriter">
+    <bean id="itemWriter"
+        class="org.springframework.batch.item.xml.StaxEventItemWriter">
         <property name="resource" value="file:xml/output.xml" />
         <property name="marshaller" ref="recordMarshaller" />
         <property name="rootTagName" value="transactionRecord" />
@@ -43,7 +47,8 @@
     <bean id="recordMarshaller" class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
         <property name="classesToBeBound">
             <list>
-				<value>org.baeldung.spring_batch_intro.model.Transaction</value>
+                <value>org.baeldung.spring_batch_intro.model.Transaction
+                </value>
             </list>
         </property>
     </bean>

spring-batch-intro/src/main/resources/spring.xml

@@ -2,9 +2,9 @@
     xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="
 		http://www.springframework.org/schema/beans 
-		http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
+		http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
 		http://www.springframework.org/schema/jdbc 
-		http://www.springframework.org/schema/jdbc/spring-jdbc-4.0.xsd">
+		http://www.springframework.org/schema/jdbc/spring-jdbc-4.2.xsd">
 
     <!-- connect to SQLite database -->
     <bean id="dataSource"
@@ -17,7 +17,8 @@
 
     <!-- create job-meta tables automatically -->
     <jdbc:initialize-database data-source="dataSource">
-		<jdbc:script location="org/springframework/batch/core/schema-drop-sqlite.sql" />
+        <jdbc:script
+            location="org/springframework/batch/core/schema-drop-sqlite.sql" />
         <jdbc:script location="org/springframework/batch/core/schema-sqlite.sql" />
     </jdbc:initialize-database>