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Support empty delimiter in DelimitedBuilder of FlatFileItemWriterBuilder

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Previously, if supplying an empty delimiter, to the delimited().delimiter() of DelimitedBuilder from the parent FlatFileItemWriterBuilder, it would be ignored and instead use the default delimiter ",".

Resolves BATCH-2844
This commit is contained in:
Drummond Dawson
2019-10-02 22:23:34 -04:00
committed by Mahmoud Ben Hassine
parent ba4aa8cae9
commit 3f17b90438
2 changed files with 30 additions and 5 deletions
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5
spring-batch-infrastructure/src/main/java/org/springframework/batch/item/file/builder/FlatFileItemWriterBuilder.java
View File

@@ -33,7 +33,6 @@ import org.springframework.batch.item.file.transform.FormatterLineAggregator;
import org.springframework.batch.item.file.transform.LineAggregator;
import org.springframework.core.io.Resource;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* A builder implementation for the {@link FlatFileItemWriter}
@@ -463,9 +462,7 @@ public class FlatFileItemWriterBuilder<T> {
"A list of field names or a field extractor is required");
DelimitedLineAggregator<T> delimitedLineAggregator = new DelimitedLineAggregator<>();
if (StringUtils.hasLength(this.delimiter)) {
delimitedLineAggregator.setDelimiter(this.delimiter);
}
delimitedLineAggregator.setDelimiter(this.delimiter);
if (this.fieldExtractor == null) {
BeanWrapperFieldExtractor<T> beanWrapperFieldExtractor = new BeanWrapperFieldExtractor<>();

30
spring-batch-infrastructure/src/test/java/org/springframework/batch/item/file/builder/FlatFileItemWriterBuilderTests.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2016-2018 the original author or authors.
* Copyright 2016-2019 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -118,6 +118,34 @@ public class FlatFileItemWriterBuilderTests {
assertEquals("HEADER$1,2,3$4,5,6$FOOTER", readLine("UTF-16LE", output));
}
@Test
public void testDelimitedOutputWithEmptyDelimiter() throws Exception {
Resource output = new FileSystemResource(File.createTempFile("foo", "txt"));
FlatFileItemWriter<Foo> writer = new FlatFileItemWriterBuilder<Foo>()
.name("foo")
.resource(output)
.lineSeparator("$")
.delimited()
.delimiter("")
.names("first", "second", "third")
.encoding("UTF-16LE")
.headerCallback(writer1 -> writer1.append("HEADER"))
.footerCallback(writer12 -> writer12.append("FOOTER"))
.build();
ExecutionContext executionContext = new ExecutionContext();
writer.open(executionContext);
writer.write(Arrays.asList(new Foo(1, 2, "3"), new Foo(4, 5, "6")));
writer.close();
assertEquals("HEADER$123$456$FOOTER", readLine("UTF-16LE", output));
}
@Test
public void testDelimitedOutputWithDefaultFieldExtractor() throws Exception {