Mule Esb File output not received

Question

I tried to create a Data-Mapper example in mule in which both inbound and outbound endpoints are File, Looks some thing like.

When i execute this program output folder of file remains empty, Logically i assume that i need to put and HashMap to XML transformer between Data Mapper and Output File. More Over i created a csv file to xml file selecting from example option in data mapper. Initially i tried to use FTP endpoint it started resulting into error so i replaced FTP with file endpoint.

Here I am Sharing configuration.xml file

<mule xmlns:file="....>
    <data-mapper:config name="sample_mapper_grf" transformationGraphPath="sample_mapper.grf" doc:name="DataMapper"/>
    <flow name="CSV_to_XML_Data_MapperFlow1" doc:name="CSV_to_XML_Data_MapperFlow1">
        <file:inbound-endpoint path="/home/jay/CSV_XML_/input"  responseTimeout="10000" doc:name="Input File"/>
        <data-mapper:transform config-ref="sample_mapper_grf" doc:name="DataMapper"/>
        <file:outbound-endpoint path="/home/jay/CSV_XML_/output/" responseTimeout="10000" doc:name="Output File"/>
    </flow>
</mule>

Data-Mapper configuration image is here

Answer 1

Add a Groovy component after the data mapper and try and dump the contents

println "post mapping payload " + payload 
return payload 

Answer 2

I got it resolved using.

here is the configuration.xml

<mule ....>
    <data-mapper:config     name="sample_mapper_grf"transformationGraphPath="sample_mapper.grf" doc:name="DataMapper"/>
    <flow name="CSV_to_XML_Data_MapperFlow1" doc:name="CSV_to_XML_Data_MapperFlow1">
        <file:inbound-endpoint path="/home/jay/CSV_XML_/input"  responseTimeout="10000"     doc:name="Input File"/>
        <data-mapper:transform config-ref="sample_mapper_grf" doc:name="DataMapper"/>
        <object-to-string-transformer doc:name="Object to String"/>
        <file:outbound-endpoint path="/home/jay/Output" responseTimeout="10000"     doc:name="File" outputPattern="#[function:dateStamp].xml"/>
    </flow>
</mule>