Writing Contents with Header using BeanIO - file-io

Question

I am trying to write some contents from one csv file to another csv file using BeanIO. I am able to get the contents but the header is not writing to destination file. I don know how to fix this. Please some one help me on this. Following is the code
StreamFactory factory = StreamFactory.newInstance();
factory.load("config" + File.separatorChar
+ CSVMain.prop.getProperty("ordersmapping"));
orderWriter = factory.createWriter("salesOrder", new File(property));
for (int i = 0; i < orders.size(); i++) {
orderWriter.write(orders.get(i));
}
orderWriter.flush();
orderWriter.close();
the code is written inside a method. And I also want to remove the carriage return(\r) from the output.
Thanks in advance.

Answer 1

I got the answer from the Google Groups thread which utilizes a class for the header and then sets the fields to ignore, basically overriding. I did not want to create a dedicated class so instead I re-used the map class as follows:
<stream name="XYZ" format="csv">
<parser>
<property name="alwaysQuote" value="true" />
</parser>
<record name="header" class="map" order="1" minOccurs="1" maxOccurs="1">
<field name="Name" default="Name" ignore="true"/>
<field name="Surname" default="Surname" ignore="
</record>
<record name="record" class="map" order="2">
<field name="Name"/>
<field name="Surname"/>
</record>
</stream>

Answer 2

You may use the this util method to easily create a Header without any additional class or XML configuration.
public static void main(String[] args) {
final String factoryName = "comma delimited csv factory";
final String headerName = "CarHeader";
final var builder = new StreamBuilder(factoryName)
.format("csv")
.addRecord(Headers.of(Car.class, headerName))
.addRecord(Car.class)
;
final var factory = StreamFactory.newInstance();
factory.define(builder);
final ByteArrayOutputStream bout = new ByteArrayOutputStream();
final BeanWriter writer = factory.createWriter(factoryName, new OutputStreamWriter(bout));
try {
writer.write(headerName, null);
writer.write(new Car("Ford Ka", 2016));
writer.write(new Car("Ford Fusion", 2020));
} finally {
writer.close();
}
System.out.println(bout.toString());
// Model,Year
// Ford Ka,2016
// Ford Fusion,2020
}