| entity |
the entity attribute can be used to specify which entity
within the associated Datastore schema the attributes within
this cluster relate to. In order to validly specify an entity
for a cluster, there must also be an entity specified for the
page containing the cluster. The IEG Engine will then assume
that the entity specified for the cluster is a direct child of
the entity specified for the page and that there is only one
occurrence of the entity specified for the cluster (when
combined with the criteria) within the entity specified for the
page. All attributes referenced within this cluster are assumed
to belong to the entity specified for the cluster. If no entity
is specified for the cluster, all attributes referenced within
it are assumed to belong to the entity specified for the page
instead. |
| criteria |
in situations where there could potentially be more than
one instance of the entity specified for a cluster within the
entity specified for the page, the criteria attribute can be
used to identify which instance to use for this cluster |
| read-only-expression |
a boolean expression which, if evaluated to true
at runtime, causes all content of the cluster to become read-only. |