Using External Properties in Apache Karaf [Fuse ESB]

Introduction

In this example we will see how to use an external property file in Fuse ESB / Apache Karaf.

Creating a configuration file

Create a config file named sample.cfg in FUSE_HOME/etc with the following content.

Spring Configuration

Blueprint 

Note : The default blueprint placeholder syntax (accessing the blueprint properties directly) is ${Key}. Hence, outside the scope of a camelContext element, the placeholder syntax you must use is ${Key}. Whereas, inside the scope of a camelContext element, the placeholder syntax you must use is {{Key}}.

Camel Route

Setting System properties using Spring

Approach 1 :

Approach 2 : Suggested by Sam Mohamed

Get ActiveMQ Queue Size using MBean (Spring JMX)

Getting a queue size of an ActiveMQ queue using MBean (Spring JMX).
Spring Config file

* A class using the MBeanServerConnection to fetch the attribute from the MBean

* Running the Queue Counter

Using Weblogic SingletonService for Spring JMS

* Weblogic Configuration

-- Add screenshots here

* Enterprise Application

Initializing the Spring context inside the SingletonService entry point.


Sample Application can be found at : Github Repo.

Spring : Browsing Oracle AQ (XMLType) using Spring JMS

Spring Aspects

Spring aspects can work with five kinds of advice :

• Before - The advice functionality takes place before the advised method is invoked.
• After - The advice functionality takes place after the advised method completes, regardless of the outcome.
• After-returning - The advice functionality takes place after the advised method successfully completes.
• After-throwing - The advice functionality takes place after the advised method throws an exception.
• Around - The advice wraps the advised method, providing some functionality before and after the advised method is invoked.

Code Examples should go here...

Spring : <null /> element

Spring : Initializing and destroying beans

* Using init-method & destroy-method

* Using Spring InitializingBean and DisposableBean interfaces

* Sample bean configuration file

* Main program

Spring : Injecting through Constructors

Spring : Sample Configuration

Using Spring JMS with Oracle AQ [XMLType payload]

Using Spring JMS with Oracle AQ [ Without Spring JDBC Extension ]

Code available at https://github.com/sachin-handiekar/spring-jms-oracle-aq

Create a queue table with XMLType payload

* Create a queue

Code 

AQ Connection factory

AQ Destination Factory

Message Listener for XMLType message

Message Listener Container

Sending XML Message to the queue