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  • Book Overview & Buying Mastering Apache Camel
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Mastering Apache Camel

Mastering Apache Camel

By : Bilgin Ismet Ibryam, Jean-Baptiste Onofré
3.4 (7)
Buy this Book
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Mastering Apache Camel

Mastering Apache Camel

3.4 (7)
By: Bilgin Ismet Ibryam, Jean-Baptiste Onofré
Buy this Book

Overview of this book

This book is intended for all Camel users who want to get the best out of Camel, and who want to implement the most efficient integration logic using best practices.
Table of Contents (10 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Key Features
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1. Key Features
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What is Apache Camel?
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Components and bean support
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Predicates and expressions
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Data format and type conversion
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Easy configuration and URI
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Lightweight and different deployment topologies
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Quick prototyping and testing support
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Management and monitoring using JMX
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Active community
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Summary
2
2. Core Concepts
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2. Core Concepts
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Messages
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Exchange
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Camel context
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Processor
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Routes
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Channels
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Domain Specific Languages (DSL)
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Component, endpoint, producer, and consumer
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Data format
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Type converter
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Summary
3
3. Routing and Processors
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3. Routing and Processors
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What is a processor?
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An example of Camel routes containing processors
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Summary
4
4. Beans
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4. Beans
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Registry
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Creating CompositeRegistry
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Service activator
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Bean and method bindings
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Annotations
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Example – creating an OSGi bundle with a bean
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Building and deploying
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Summary
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5. Enterprise Integration Patterns
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5. Enterprise Integration Patterns
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EIP processors
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Messaging systems EIPs
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Messaging channels EIPs
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Message Construction EIPs
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Message Routing
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Message Transformation EIPs
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The Messaging Endpoints EIPs
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System Management EIPs
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Summary
6
6. Components and Endpoints
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6. Components and Endpoints
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Components
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Endpoint
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A custom component example
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Summary
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7. Error Handling
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7. Error Handling
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Types of errors
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Camel error handlers
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Error handlers scopes
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Error handler features
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Try, Catch, and Finally
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Summary
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8. Testing
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8. Testing
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Unit test approach with the Camel test kit
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A complete example
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Additional annotations
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Mocking OSGi services
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Summary
9
Index
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Index

Message Construction EIPs

These EIPs are responsible for creating messages in response to other messages.

The Event Message EIP

The Event Message EIP describes how to use messaging to transmit events from one application to another.

Camel supports this EIP by the use of the Message Exchange Pattern in the exchange. When defined as InOnly, it means that we deal with a one way event message.

So, basically, the Event Message EIP means one directional messages.

The first endpoint of the route defines the expected Exchange pattern, but, at any point in the route, you can force the Exchange pattern to InOnly to make it act as an Event Message EIP.

For this, you have to use the inOnly notation:

<route>
   <from uri="direct:start"/>
   <inOnly uri="bean:myBean"/>
</route>

You can also use the setExchangePattern notation:

<route>
   <from uri="direct:start"/>
   <setExchangePattern pattern="InOnly"/>
   <to uri="bean:myBean"/>
</route>

It's also possible...

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