Update docs and samples with the new chunk step implementation

Related to #3950

Author: fmbenhassine

spring-batch-docs/modules/ROOT/pages/common-patterns.adoc

@@ -766,7 +766,7 @@ public Job job1(JobRepository jobRepository, Step step1, Step step2) {
 @Bean
 public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("step1", jobRepository)
-				.<String, String>chunk(10, transactionManager)
+				.<String, String>chunk(10).transactionManager(transactionManager)
 				.reader(reader())
 				.writer(savingWriter())
 				.listener(promotionListener())

spring-batch-docs/modules/ROOT/pages/processor.adoc

@@ -101,7 +101,7 @@ public Job ioSampleJob(JobRepository jobRepository, Step step1) {
 @Bean
 public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("step1", jobRepository)
-				.<Foo, Bar>chunk(2, transactionManager)
+				.<Foo, Bar>chunk(2).transactionManager(transactionManager)
 				.reader(fooReader())
 				.processor(fooProcessor())
 				.writer(barWriter())
@@ -205,7 +205,7 @@ public Job ioSampleJob(JobRepository jobRepository, Step step1) {
 @Bean
 public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("step1", jobRepository)
-				.<Foo, Foobar>chunk(2, transactionManager)
+				.<Foo, Foobar>chunk(2).transactionManager(transactionManager)
 				.reader(fooReader())
 				.processor(compositeProcessor())
 				.writer(foobarWriter())

spring-batch-docs/modules/ROOT/pages/readers-and-writers/delegate-pattern-registering.adoc

@@ -30,7 +30,7 @@ public Job ioSampleJob(JobRepository jobRepository, Step step1) {
 @Bean
 public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("step1", jobRepository)
-				.<String, String>chunk(2, transactionManager)
+				.<String, String>chunk(2).transactionManager(transactionManager)
 				.reader(fooReader())
 				.processor(fooProcessor())
 				.writer(compositeItemWriter())

spring-batch-docs/modules/ROOT/pages/scalability.adoc

@@ -52,7 +52,7 @@ public TaskExecutor taskExecutor() {
 @Bean
 public Step sampleStep(TaskExecutor taskExecutor, JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("sampleStep", jobRepository)
-				.<String, String>chunk(10, transactionManager)
+				.<String, String>chunk(10).transactionManager(transactionManager)
 				.reader(itemReader())
 				.writer(itemWriter())
 				.taskExecutor(taskExecutor)
@@ -103,7 +103,7 @@ follows:
 @Bean
 public Step sampleStep(TaskExecutor taskExecutor, JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("sampleStep", jobRepository)
-				.<String, String>chunk(10, transactionManager)
+				.<String, String>chunk(10).transactionManager(transactionManager)
 				.reader(itemReader())
 				.writer(itemWriter())
 				.taskExecutor(taskExecutor)

spring-batch-docs/modules/ROOT/pages/step/chunk-oriented-processing/commit-interval.adoc

@@ -29,7 +29,7 @@ public Job sampleJob(JobRepository jobRepository, Step step1) {
 @Bean
 public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("step1", jobRepository)
-				.<String, String>chunk(10, transactionManager)
+				.<String, String>chunk(10).transactionManager(transactionManager)
 				.reader(itemReader())
 				.writer(itemWriter())
 				.build();

spring-batch-docs/modules/ROOT/pages/step/chunk-oriented-processing/configuring-skip.adoc

@@ -22,7 +22,7 @@ The following Java example shows an example of using a skip limit:
 @Bean
 public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("step1", jobRepository)
-				.<String, String>chunk(10, transactionManager)
+				.<String, String>chunk(10).transactionManager(transactionManager)
 				.reader(flatFileItemReader())
 				.writer(itemWriter())
 				.faultTolerant()
@@ -83,7 +83,7 @@ The following Java example shows an example excluding a particular exception:
 @Bean
 public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("step1", jobRepository)
-				.<String, String>chunk(10, transactionManager)
+				.<String, String>chunk(10).transactionManager(transactionManager)
 				.reader(flatFileItemReader())
 				.writer(itemWriter())
 				.faultTolerant()

spring-batch-docs/modules/ROOT/pages/step/chunk-oriented-processing/configuring.adoc

@@ -33,7 +33,7 @@ public Job sampleJob(JobRepository jobRepository, Step sampleStep) {
 public Step sampleStep(JobRepository jobRepository, // <2>
 		PlatformTransactionManager transactionManager) { // <1>
 	return new StepBuilder("sampleStep", jobRepository)
-				.<String, String>chunk(10, transactionManager) // <3>
+				.<String, String>chunk(10).transactionManager(transactionManager) // <3>
 				.reader(itemReader())
 				.writer(itemWriter())
 				.build();

spring-batch-docs/modules/ROOT/pages/step/chunk-oriented-processing/controlling-rollback.adoc

@@ -21,7 +21,7 @@ In Java, you can control rollback as follows:
 @Bean
 public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("step1", jobRepository)
-				.<String, String>chunk(2, transactionManager)
+				.<String, String>chunk(2).transactionManager(transactionManager)
 				.reader(itemReader())
 				.writer(itemWriter())
 				.faultTolerant()
@@ -75,7 +75,7 @@ The following example shows how to create a reader that does not buffer items in
 @Bean
 public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("step1", jobRepository)
-				.<String, String>chunk(2, transactionManager)
+				.<String, String>chunk(2).transactionManager(transactionManager)
 				.reader(itemReader())
 				.writer(itemWriter())
 				.readerIsTransactionalQueue()

spring-batch-docs/modules/ROOT/pages/step/chunk-oriented-processing/intercepting-execution.adoc

@@ -27,7 +27,7 @@ The following example shows a listener applied at the chunk level in Java:
 @Bean
 public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("step1", jobRepository)
-				.<String, String>chunk(10, transactionManager)
+				.<String, String>chunk(10).transactionManager(transactionManager)
 				.reader(reader())
 				.writer(writer())
 				.listener(chunkListener())

spring-batch-docs/modules/ROOT/pages/step/chunk-oriented-processing/registering-item-streams.adoc

@@ -25,7 +25,7 @@ The following example shows how to register a `stream` on a `step` in Java:
 @Bean
 public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
 	return new StepBuilder("step1", jobRepository)
-				.<String, String>chunk(2, transactionManager)
+				.<String, String>chunk(2).transactionManager(transactionManager)
 				.reader(itemReader())
 				.writer(compositeItemWriter())
 				.stream(fileItemWriter1())