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Chapter 11. Building a FAB

Abstract

A FAB is essentially a JAR file built using Maven, where the Maven pom.xml file declares the complete set of dependencies for the JAR.

11.1. Generating a FAB Project
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Generating FAB projects with Maven archetypes
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To help you get started quickly, you can invoke a Maven archetype to generate the initial outline of a Maven project (a Maven archetype is analogous to a project wizard). Because FABs do not require any special configuration (apart from the presence of a pom.xml file, which is always present in a Maven-generated JAR), you can use almost any Maven archetype, as long as the generated Maven project has the jar packaging type.

Archetypes
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The following Maven archetypes are useful for generating Apache Camel projects:
camel-archetype-java
Demonstrates a route defined using the Java DSL.
camel-archetype-blueprint
Demonstrates a route defined using the XML DSL in an OSGi blueprint file.
camel-archetype-activemq
Demonstrates how to use a message broker in a route.
camel-archetype-component
Demonstrates how to define a custom Apache Camel component.

camel-archetype-blueprint archetype
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For example, consider an archetype for building an Apache Camel project. The camel-archetype-blueprint archetype creates a project that demonstrates a simple Apache Camel route written in the XML DSL using the Blueprint injection framework. To generate a Maven project with the coordinates, GroupId:ArtifactId:Version, enter the following command: 
mvn archetype:generate
-DarchetypeGroupId=org.apache.camel.archetypes
-DarchetypeArtifactId=camel-archetype-blueprint
-DarchetypeVersion=2.12.0.redhat-610379
-DgroupId=GroupId
-DartifactId=ArtifactId
-Dversion=Version
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Note
The arguments to the mvn command are shown on separate lines purely for the sake of readability. When you are entering the command at a command prompt, you must ensure that all of the parameters are on the same line.

Building the FAB
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The archetype creates a project in a new directory whose name is that of the specified artifact ID, ArtifactId. To build the FAB defined by the new project, open a command prompt, go to the project directory (that is, the directory containing the pom.xml file), and enter the following Maven command: 
mvn install
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The effect of this command is to compile all of the Java source files, to generate a FAB JAR under the ArtifactId/target directory, and then to install the generated JAR in the local Maven repository.
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