Component org.nuxeo.ecm.platform.relations.services.RelationService

Documentation

This service allows the definition of graph types and graphs, and the RelationManager interface gives access to the graphs.

Resolution Order

463

The resolution order represents the order in which this component has been resolved by the Nuxeo Runtime framework.
You can influence this order by adding "require" tags in your component declaration, to make sure it is resolved after another component.

Start Order

881

The start order represents the order in which this component has been started by the Nuxeo Runtime framework.
This number is interesting to tweak if your Java component interacts with other components, and needs to be started before or after another one.
It can be changed by implementing the method "Component#getApplicationStartedOrder()" on your Java component: components are sorted according to this reference value, in increasing order.
The default value is 1000, and the repository initialization uses number 100. Negative values can also be used.

Implementation

Class: org.nuxeo.ecm.platform.relations.services.RelationService

Services

Extension Points

Contributions

XML Source

<?xml version="1.0"?>
<component name="org.nuxeo.ecm.platform.relations.services.RelationService">

  <documentation>
    This service allows the definition of graph types and graphs, and the
    RelationManager interface gives access to the graphs.
  </documentation>

  <implementation
      class="org.nuxeo.ecm.platform.relations.services.RelationService"/>

  <service>
    <provide interface="org.nuxeo.ecm.platform.relations.api.RelationManager"/>
    <provide interface="org.nuxeo.ecm.platform.relations.api.DocumentRelationManager"/>
  </service>

  <extension-point name="graphtypes">
    <documentation>
      The definition of new graph types. Example:
      <code>
        <graphtype name="mytype" class="org.example.graph.MyGraph" />
      </code>
      The class can be an implementation of either
      org.nuxeo.ecm.platform.relations.api.Graph or
      org.nuxeo.ecm.platform.relations.api.GraphFactory.
      <p />
      The standard graph type "core" is defined by default.
    </documentation>
    <object
      class="org.nuxeo.ecm.platform.relations.descriptors.GraphTypeDescriptor" />
  </extension-point>

  <extension-point name="graphs">
    <description>
      The definition of new graphs. You use a graph using
      relationService.getGraphByName(name).
      <p />
      Example:
      <code>
        <graph name="myrelations" type="core">
          <option name="doctype">DefaultRelation</option>
          <namespaces>
            <namespace name="dc">http://purl.org/dc/elements/1.1/
            </namespace>
          </namespaces>
        </graph>
      </code>
      <p />
      The options are graph-dependent. For the "core" graphs, you can
      use a "doctype" to specify which subtype of "Relation" should be
      used to store the relations. "DefaultRelation" is a standard
      relation type.
      <p />
      The namespaces allows you to define when a resource is returned as
      a QNameResource.
    </description>
    <object
      class="org.nuxeo.ecm.platform.relations.descriptors.GraphDescriptor" />
  </extension-point>

  <extension-point name="resourceadapters">
    <description>
      The definition of new resource adapters. Resource adapters are
      used when calling
      relationService.getResourceRepresentation(resource) or
      relationService.getResource().
      <p />
      Example:
      <code>
        <adapter namespace="http://www.nuxeo.org/document/uid/"
          class="org.nuxeo.ecm.platform.relations.adapters.DocumentModelResourceAdapter" />
      </code>
    </description>
    <object
      class="org.nuxeo.ecm.platform.relations.descriptors.ResourceAdapterDescriptor" />
  </extension-point>

  <extension target="org.nuxeo.ecm.platform.relations.services.RelationService"
    point="resourceadapters">
    <adapter namespace="http://www.nuxeo.org/document/uid/"
      class="org.nuxeo.ecm.platform.relations.adapters.DocumentModelResourceAdapter" />
    <!-- compat with incorrect code -->
    <adapter namespace="http://www.nuxeo.org/document/uid"
      class="org.nuxeo.ecm.platform.relations.adapters.DocumentModelResourceAdapter" />
  </extension>

  <extension target="org.nuxeo.ecm.platform.relations.services.RelationService"
      point="graphtypes">
    <graphtype name="core"
      class="org.nuxeo.ecm.platform.relations.CoreGraphFactory" />
  </extension>

  <extension target="org.nuxeo.ecm.core.schema.TypeService"
    point="doctype">
    <doctype name="DefaultRelation" extends="Relation">
      <facet name="HiddenInNavigation" />
    </doctype>
  </extension>

</component>