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Chapter 2. Upgrading Fuse applications on JBoss EAP standalone
To upgrade your Fuse applications on JBoss EAP, you must update your Fuse project’s Maven dependencies to ensure that you are using the correct version of Fuse.
Typically, you use Maven to build Fuse applications. Maven is a free and open source build tool from Apache. Maven configuration is defined in a Fuse application project’s pom.xml file. While building a Fuse project, the default behavior is that Maven searches external repositories and downloads the required artifacts. You add a dependency for the Fuse Bill of Materials (BOM) to the pom.xml file so that the Maven build process picks up the correct set of Fuse supported artifacts.
The following sections provide information on Maven dependencies and how to update them in your Fuse projects.
2.1. About Maven dependencies
The purpose of a Maven Bill of Materials (BOM) file is to provide a curated set of Maven dependency versions that work well together, saving you from having to define versions individually for every Maven artifact.
There is a dedicated BOM file for each container in which Fuse runs.
You can find these BOM files here: https://github.com/jboss-fuse/redhat-fuse. Alternatively, go to the latest Release Notes for information on BOM file updates.
The Fuse BOM offers the following advantages:
-
Defines versions for Maven dependencies, so that you do not need to specify the version when you add a dependency to your
pom.xmlfile. - Defines a set of curated dependencies that are fully tested and supported for a specific version of Fuse.
- Simplifies upgrades of Fuse.
Only the set of dependencies defined by a Fuse BOM are supported by Red Hat.
2.2. Updating your Fuse project’s Maven dependencies
To upgrade your Fuse application for JBoss EAP, update your project’s Maven dependencies.
Procedure
-
Open your project’s
pom.xmlfile. Add a
dependencyManagementelement in your project’spom.xmlfile (or, possibly, in a parentpom.xmlfile), as shown in the following example:<?xml version="1.0" encoding="UTF-8" standalone="no"?> <project ...> ... <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <!-- configure the versions you want to use here --> <fuse.version>7.4.0.fuse-740036-redhat-00002</fuse.version> </properties> <dependencyManagement> <dependencies> <dependency> <groupId>org.jboss.redhat-fuse</groupId> <artifactId>fuse-eap-bom</artifactId> <version>${fuse.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> ... </project>-
Save your
pom.xmlfile.
After you specify the BOM as a dependency in your pom.xml file, it becomes possible to add Maven dependencies to your pom.xml file without specifying the version of the artifact. For example, to add a dependency for the camel-velocity component, you would add the following XML fragment to the dependencies element in your pom.xml file:
<dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-velocity</artifactId> <scope>provided</scope> </dependency>
Note how the version element is omitted from this dependency definition.
