IN PROGRESS - BATCH-827: Create Sample job for reading and writing headers and footers

spring-batch-samples/src/main/java/org/springframework/batch/sample/support/HeaderCopyCallback.java

@@ -0,0 +1,32 @@
+package org.springframework.batch.sample.support;
+
+import java.io.IOException;
+import java.io.Writer;
+
+
+import org.springframework.batch.item.file.FileWriterCallback;
+import org.springframework.batch.item.file.FlatFileItemReader;
+import org.springframework.batch.item.file.FlatFileItemWriter;
+import org.springframework.batch.item.file.LineCallbackHandler;
+import org.springframework.util.Assert;
+
+/**
+ * Designed to be registered with both {@link FlatFileItemReader} and
+ * {@link FlatFileItemWriter} and copy header line from input file to output
+ * file.
+ */
+public class HeaderCopyCallback implements LineCallbackHandler, FileWriterCallback {
+
+	private String header = "";
+	
+	public void handleLine(String line) {
+		Assert.notNull(line);
+		this.header = line;
+	}
+
+	public void write(Writer writer) throws IOException {
+		writer.write("header from input: " + header);
+		
+	}
+
+}

spring-batch-samples/src/main/java/org/springframework/batch/sample/support/SummaryFooterCallback.java

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+package org.springframework.batch.sample.support;
+
+import java.io.IOException;
+import java.io.Writer;
+
+import org.springframework.batch.core.StepExecution;
+import org.springframework.batch.core.listener.StepExecutionListenerSupport;
+import org.springframework.batch.item.file.FileWriterCallback;
+
+/**
+ * Writes summary info in the footer of a file.
+ */
+public class SummaryFooterCallback extends StepExecutionListenerSupport implements FileWriterCallback{
+
+	private StepExecution stepExecution;
+	
+	public void write(Writer writer) throws IOException {
+		writer.write("footer - number of items written: " + stepExecution.getWriteCount());
+	}
+
+	@Override
+	public void beforeStep(StepExecution stepExecution) {
+		this.stepExecution = stepExecution;
+	}
+
+	
+}