| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| |
| ==== EJB |
| |
| This section describes how to add support of EJB in Apache Karaf. It doesn't describe how to develop EJB applications. |
| |
| ===== Apache OpenEJB |
| |
| Apache Karaf doesn't provide "native" support of EJB (Enterprise Java Beans). |
| |
| Apache OpenEJB provides EJB support for Apache Karaf by providing a set of features. |
| |
| You have to update some Karaf configuration to have full OpenEJB support. |
| |
| First, in the `etc/system.properties`, you have to append the following properties: |
| |
| ---- |
| ... |
| # |
| # OpenEJB scanner |
| # |
| openejb.deployments.classpath.exclude=bundle:* |
| openejb.deployments.classpath.filter.descriptors=true |
| ---- |
| |
| Due to some OpenEJB version constraints, you also have to update the `etc/jre.properties` by changing the version of |
| the `javax.xml.namespace` package, and remove the version of the `javax.annotation` package (provided by Geronimo |
| Annotation API spec bundle, used by OpenEJB): |
| |
| ---- |
| ... |
| javax.annotation, \ |
| javax.annotation.processing, \ |
| ... |
| javax.xml.namespace;version="1.0.0", \ |
| ... |
| ---- |
| |
| It enables the OpenEJB bundles scanning, looking for EJBs. |
| |
| After starting/restart Karaf to take these changes, we can install the OpenEJB feature: |
| |
| ---- |
| karaf@root()> feature:repo-add openejb |
| ---- |
| |
| By default, the `feature:repo-add openejb` command will install the latest OpenEJB version available. |
| |
| You can specify a target version using the `version` argument: |
| |
| ---- |
| karaf@root()> feature:repo-add openejb 4.5.2 |
| ---- |
| |
| Now, you have a set of new OpenEJB features available in your Apache Karaf container: |
| |
| ---- |
| karaf@root()> la |
| ... |
| openejb-core | 4.5.2 | | openejb-features | |
| openejb-server | 4.5.2 | | openejb-features | |
| openejb-cxf | 4.5.2 | | openejb-features | |
| openejb-rest | 4.5.2 | | openejb-features | |
| openejb-soap | 4.5.2 | | openejb-features | |
| ---- |
| |
| You can add EJB support installing the `openejb-core` feature: |
| |
| ---- |
| karaf@root()> feature:install openejb-core |
| ---- |
| |
| ===== Apache KarafEE |
| |
| A custom distribution of Apache Karaf embedding OpenEJB is available in the Apache TomEE project. |
| |
| The name of this custom distribution is KarafEE: https://svn.apache.org/repos/asf/tomee/karafee/ |
| |
| However, this project is now "deprecated", and all resources from KarafEE will move directly to Apache Karaf soon. |
