Node type registration extension is declared in the org.exoplatform.services.jcr.core.nodetype.ExtendedNodeTypeManager interface.

Your custom service can register some necessary predefined node types at the start-up time. The node definition should be placed in a special XML file (see DTD below) and declared in the service's configuration file thanks to the eXo component plugin mechanism as described below:

<external-component-plugins>

    <target-component>org.exoplatform.services.jcr.RepositoryService</target-component>

        <component-plugin>

            <name>add.nodeType</name>

            <set-method>addPlugin</set-method>

            <type>org.exoplatform.services.jcr.impl.AddNodeTypePlugin</type>

            <init-params>

                <values-param>

                    <name>autoCreatedInNewRepository</name>

                    <description>Node types configuration file</description>

                    <value>jar:/conf/test/nodetypes-tck.xml</value>

                    <value>jar:/conf/test/nodetypes-impl.xml</value>

                </values-param>

                <values-param>

                    <name>repo1</name>

                    <description>Node types configuration file for repository with name repo1</description>

                    <value>jar:/conf/test/nodetypes-test.xml</value>

                </values-param>

                <values-param>

                    <name>repo2</name>

                    <description>Node types configuration file for repository with name repo2</description>

                    <value>jar:/conf/test/nodetypes-test2.xml</value>

                </values-param>

            </init-params>

        </component-plugin>

There are two registration types. The first type is the registration of node types in all created repositories, it is configured in values-param with the name autoCreatedInNewRepository. The second type is registration of node types in specified repository and it is configured in values-param with the name of repository.