RegistryService has two optional params: value parameter mixin-names and properties parameter locations. The mixin-names is used for adding additional mixins to nodes exo:registry, exo:applications, exo:services, exo:users and exo:groups of RegistryService. This allows the top level applications to manage these nodes in special way. Locations is used to mention where exo:registry is placed for each repository. The name of each property is interpreted as a repository name and its value as a workspace name (a system workspace by default).

<component>

   <type>org.exoplatform.services.jcr.ext.registry.RegistryService</type>

   <init-params>

      <values-param>

         <name>mixin-names</name>

         <value>exo:hideable</value>      

      </values-param>

      <properties-param>         

      <name>locations</name>

         <property name="db1" value="ws2"/>

      </properties-param>

   </init-params>

</component>