How to skip CSV header line with camel-beanio - csv

Question

How to skip CSV header line when using camel-beanio from apache?
My XML file for mapping look like this:
<beanio>
<record name="myRecord" class="my.package.MyConditionClass">
<field name="myField" position="1" />
<field name="mylist" position="2" collection="list" type ="string"/>
<segment name="conditions" class="my.package.MyConditionClass" nillable="true" collection="map" key="myKey">
<field name="myKey" position="2">
<field name="myValue" position="3">
</segment>
</record>
</beanio>
But to make my code run i must delete the first line (header line) manually. How do skip the header line automatically?

Answer 1

To read a CSV file and ignore the first header line, you can define the first field value of the header as comments of the CSV Stream
Example of CSV :
toto;tata;titi
product1;1;18
product2;2;36
product3;5;102
The mapping file :
<beanio ...
<stream name="dataStream" format="csv" >
<parser>
<property name="delimiter" value=";" />
<!-- ignore header line -->
<property name="comments" value="toto" />
</parser>
<record name="record" minOccurs="0" maxOccurs="unbounded" class="com.stackoverflow.Product" />
</stream>
</beanio>
Source : http://beanio.org/2.0/docs/reference/index.html#CSVStreamFormat
Another way will be to use camel-bindy in place of camel-beanio and the new option skipFirstLine (see https://camel.apache.org/components/latest/bindy-dataformat.html#_1_csvrecord)

Answer 2

Shortcut:
As soon as define BeanReader to read/process the records, use it's skip method with count 1 to skip the header.
e.g.
// Define Reader to process records
BeanReader beanReader = factory.createReader("STREAM",inputStreamReader);
// Skip First Record
beanReader.skip(1);
// Process rest of Stream
Object record;
do {
try {
record = beanReader.read();
}
catch (BeanReaderException e) {
e.printStackTrace();
}
} while(record !=null)
Refer http://beanio.org/2.0/docs/reference/index.html#TheMappingFile.
Skip method signature:
public int skip(int count) throws BeanReaderException;