This document discusses how to use property placeholders in Mule applications. It provides an example Mule configuration file that defines a property placeholder for environment-specific properties files. When the flow is triggered, it will load the properties from the correct file based on the environment variable specified in mule-app.properties. The document aims to demonstrate how to configure properties using placeholders in Mule.

1. Property Placeholder

2. Abstract
 The main motto of this PPT is How to use Property
Placeholder in our applications.

3. Example

5. .mflow
 <?xml version="1.0" encoding="UTF-8"?>
 <mule xmlns:context="http://www.springframework.org/schema/context"
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"
 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.xsd
 http://www.mulesoft.org/schema/mule/core
http://www.mulesoft.org/schema/mule/core/current/mule.xsd
 http://www.mulesoft.org/schema/mule/http
http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd
 http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-current.xsd">
 <http:listener-config name="HTTP_Listener_Configuration" host="${host}"
port="${port}" doc:name="HTTP Listener Configuration"/>
 <context:property-placeholder location="myfile-${env}.properties"/>
 <flow name="PropertyPlaceHolderFlow">
 <http:listener config-ref="HTTP_Listener_Configuration" path="/"
doc:name="HTTP"/>
 <logger message="--Flow started" level="INFO" doc:name="Logger"/>
 </flow>
 </mule>

6.  Output:
 *******************************************************************
***
 *******************************************************************
************************************
 * - - + APPLICATION + - - * - - + DOMAIN + - - * - -
+ STATUS + - - *
 *******************************************************************
************************************
 * PropertyPlaceHolder * default *
DEPLOYED *
 *******************************************************************
************************************
 INFO 2016-12-21 09:16:44,431
[[PropertyPlaceHolder].HTTP_Listener_Configuration.worker.01]
org.mule.api.processor.LoggerMessageProcessor: --Flow started

7.  Flow of execution:
1. URL to trigger the service from browser
http://localhost:8086
Note:
1. Create myfile-DEV.proerties file in
src/main/resources folder
2. Specify the env name in mule-app.properties file

8. References
 https://docs.mulesoft.com/mule-user-
guide/v/3.6/configuring-properties