This document discusses transforming CSV data to XML format in Mule. It describes the components used in a Mule flow: a File endpoint to pick up CSV files, a logger, a CSV to Maps component to convert CSV data to Maps, and a Java component to process the Maps. The CSV to Maps component uses a mapping file to define the CSV columns and converts each CSV line to a Map. The Maps are passed to the Java component, which prints the Maps and size to the console.

1. CSV to XML transformation in Mule

2. Today we will be discussing on transformation
of CSV to XML format of data.
The configuration details for each of the Mule flow
component is explained below.
The first component of the flow is File Endpoint.

3. The File endpoint is configured to pick up files from specific
location and on completion of processing move it to a pre-
defined location. The developer is free to choose location as
per his/her convenience.
For our demonstration, in the General tab, configure the
following
Path –
C:Usersantonio.pellegrinoAnypointStudioworkspacetestcs
vtoxmlsrctestresourcesinput
Move to Directory – C:MuleStudioFileOutbound g
properties with specified values:

4. Move to Directory –
C:Usersantonio.pellegrinoAnypointStudioworkspacetestcs
vtoxmlsrctestresourcesoutput
The next component is logger. The message property value of
the logger component defines the logging statement. In the
General tab, configure the following.
Message – #[string: output #[message]]
The message object provides developer with insights
regarding message’s meta-data.

5. The contents of the file read by the File endpoint component
is passed to the CSV to Maps component for conversion to
Map data structure. Each line in the CSV file is converted into
an individual Map instance. The individual Map instances are
added to a Collection and passed on to the next message
processor in the flow chain. The component
uses FlatPack project to do file parsing. The parsed file
definition is provided via the mapping file property. The file
needs to be present in the application classpath. To ensure
availability, the person.xml is added in the src/main/java
folder.

6. In the General tab of the CSV to Maps component configure
the following properties with specific values
Delimiter – ,
Mapping file – person.xml

7. <?xml version='1.0'?>
<!-- DTD can be pulled from the Jar or over the web-->
<!DOCTYPE PZMAP SYSTEM "flatpack.dtd" >
<!--<!DOCTYPE PZMAP SYSTEM
"http://flatpack.sourceforge.net/flatpack.dtd" >-->
<PZMAP>
<COLUMN name="FIRSTNAME" />
<COLUMN name="LASTNAME" />

8. <COLUMN name="DOB" />
</PZMAP>
In the Java component’s General tab configure the
following property with specific value.
Class Name – com.vinraj.integration.file.CSVProcessor
The source code of the CSVProcessor is shown below.

9. package testcsvtoxml;
import java.util.List;
import java.util.Map;
public class CSVProcessor {
public void processFile(List<Map<String, String>> maps) {
System.out.println(maps);
System.out.println("Size: " + maps.size());
}
}

10. For testin we can use into csv
John,Kent,11/02/1972
Jane,Tully,1/12/1978
Robert,Smith,1/12/1988

11. Message properties:
INVOCATION scoped properties:
fileAge=1000
moveToDirectory=C:Usersantonio.pellegrinoAnypointStudioworkspacetestcsvtox
mlsrctestresourcesoutput
originalDirectory=C:Usersantonio.pellegrinoAnypointStudioworkspacetestcsvtoxm
INBOUND scoped properties:
MULE_ORIGINATING_ENDPOINT=endpoint..C.Users.antonio.pellegrino.AnypointStudio
.workspace.testcsvtoxml.src.test.resources.input
directory=C:Usersantonio.pellegrinoAnypointStudioworkspacetestcsvtoxmlsrctes
tresourcesinputlsrctestresourcesinput originalFilename=person.csv

12. originalFilename=person.csv
fileSize=66
originalDirectory=C:Usersantonio.pellegrinoAnypointStudioworkspacetestcsvtoxm
lsrctestresourcesinput
originalFilename=person.csv
timestamp=1464105815396
OUTBOUND scoped properties:
filename=person.csv
SESSION scoped properties:
}

13. [{FIRSTNAME=John, DOB=11/02/1972, LASTNAME=Kent}, {FIRSTNAME=Jane,
DOB=1/12/1978, LASTNAME=Tully}, {FIRSTNAME=Robert, DOB=1/12/1988,
LASTNAME=Smith}]
Size: 3
The graphic flow is