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  • Book Overview & Buying Mastering Apache Camel
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Mastering Apache Camel

Mastering Apache Camel

By : Jean-Baptiste Onofré
3.2 (6)
Buy this Book
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Mastering Apache Camel

Mastering Apache Camel

3.2 (6)
By: 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
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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
7
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
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Index
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Index

Camel context

The Camel context is the runtime system and the loading container of all resources required for the execution of the routing. It keeps everything together to allow the user to execute the routing logic. When the context starts, it also starts various components and endpoints, and activates the routing rules.

The Camel context is described by the org.apache.camel.CamelContext interface (http://camel.apache.org/maven/current/camel-core/apidocs/org/apache/camel/CamelContext.html).

Camel context

A Camel context contains the following:

  • The components and endpoints used in the routing (see later for the details about components and endpoints)
  • The type converters used to transform a message of one type to another
  • The data formats used to define the format of a message body
  • The registry where Camel will look for the beans used in the routing
  • The languages describing expressions and predicates used in the routing by a language (xpath, xquery, PHP, and so on)
  • The routes definition itself allowing you to...
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Mastering Apache Camel
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