DataMapper

The main motto of this PPT is How to use DataMapper Transformer in our applications.

Abstract

  DataMapper takes data in a specific format and outputs the same data in the format of your choice.

Introduction

Example

.mflow<?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:jdbc-ee="http://www.mulesoft.org/schema/mule/ee/jdbc" xmlns:data-mapper="http://www.mulesoft.org/schema/mule/ee/data-mapper" xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation" xmlns:spring="http://www.springframework.org/schema/beans" version="EE-3.4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsdhttp://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsdhttp://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsdhttp://www.mulesoft.org/schema/mule/ee/jdbc http://www.mulesoft.org/schema/mule/ee/jdbc/current/mule-jdbc-ee.xsdhttp://www.mulesoft.org/schema/mule/ee/data-mapper http://www.mulesoft.org/schema/mule/ee/data-mapper/current/mule-data-mapper.xsd"> <spring:beans> <spring:bean id="Bean1" name="Bean" class="org.enhydra.jdbc.standard.StandardDataSource"> <spring:property name="driverName" value="com.microsoft.sqlserver.jdbc.SQLServerDriver"/> <spring:property name="url" value="jdbc:sqlserver://localhost:1433;databaseName=test1;user=****;password=****;"/> </spring:bean> </spring:beans> <jdbc-ee:connector name="Database" dataSource-ref="Bean1" validateConnections="true" queryTimeout="-1" pollingFrequency="0" doc:name="Database"/> <data-mapper:config name="new_mapping_grf" transformationGraphPath="new_mapping.grf" doc:name="new_mapping_grf"/> <flow name="DataMapper_POCFlow1" doc:name="DataMapper_POCFlow1"> <http:inbound-endpoint exchange-pattern="request-response" host="localhost" port="8065" path="datamapper" doc:name="HTTP"/> <logger message="--entered" level="INFO" doc:name="Logger"/> <jdbc-ee:outbound-endpoint exchange-pattern="request-response" queryKey="select" queryTimeout="-1" connector-ref="Database" doc:name="Database"> <jdbc-ee:query key="select" value="select * from mytable"/> </jdbc-ee:outbound-endpoint> <data-mapper:transform config-ref="new_mapping_grf" doc:name="DataMapper"/> <logger message="---#[payload]" level="INFO" doc:name="Logger"/> </flow></mule>

Output:+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Started app 'DataMapper' +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++INFO 2015-05-16 10:00:00,123 [[DataMapper_POC].connector.http.mule.default.receiver.02] org.mule.api.processor.LoggerMessageProcessor: --enteredINFO 2015-05-16 10:00:00,123 [[DataMapper_POC].connector.http.mule.default.receiver.02] org.mule.lifecycle.AbstractLifecycleManager: Initialising: 'Database.dispatcher.1295829687'. Object is: EEJdbcMessageDispatcherINFO 2015-05-16 10:00:00,123 [[DataMapper_POC].connector.http.mule.default.receiver.02] org.mule.lifecycle.AbstractLifecycleManager: Starting: 'Database.dispatcher.1295829687'. Object is: EEJdbcMessageDispatcherINFO 2015-05-16 10:00:00,254[[DataMapper_POC].connector.http.mule.default.receiver.02] org.mule.api.processor.LoggerMessageProcessor: ---[{id=1, name=a, subj=Hindi, marks=34}, {id=2, name=b, subj=English, marks=33}, {id=3, name=c, subj=science, marks=67}, {id=4, name=d, subj=social, marks=89}]

Flow of execution:1. URL to trigger the service from browserhttp://localhost:8065/datamapper 2. Database component connects to the specific database, executes the select query, maps the results using DataMapper and prints the result in console

https://docs.mulesoft.com/mule-user-guide/v/3.7/datamapper-supplemental-topics

References