In view-entity(s), is it possible to have conditionals in <relation>?
For eg, an entity Group can have 3 types of members: "LEADER", "VICE" and
"MEMBER".
I've included my thoughts in the crude example below (please ignore syntax
errors).
<entity entity-name="Group">
<field name="groupId"/>
</entity>
<entity entity-name="Member">
<field name="memberId"/>
<field name="groupId"/>
<field name="roleId"/>
<relation rel-entity-name="Group">
<key-map field-name="groupId"/>
</relation>
</entity>
<view-entity entity-name="GroupAndMember">
<member-entity entity-alias="GP" entity-name="Group"/>
<member-entity entity-alias="LD" entity-name="Member"/>
<member-entity entity-alias="VC" entity-name="Member"/>
<member-entity entity-alias="MB" entity-name="Member"/>
<alias-all entity-alias="GP"/>
<alias entity-alias="LD" name="leaderId" field-name="memberId"/>
<alias entity-alias="VC" name="viceId" field-name="memberId"/>
<alias entity-alias="MB" name="memberId" field-name="memberId"/>
<view-link entity-alias="GP" rel-entity-alias="LD" rel-optional="true">
<!-- Where LD.roleId is "LEADER" -->
</view-link>
<view-link entity-alias="GP" rel-entity-alias="VC" rel-optional="true">
<!-- Where VC.roleId is "VICE" -->
</view-link>
<view-link entity-alias="GP" rel-entity-alias="MB" rel-optional="true">
<!-- Where MB.roleId is "MEMBER" -->
</view-link>
</entity>
I know that I can simply use different entities for leader, vice and member (eg Leader, Vice and
Member). But that would be a little awkward, since all the 3 entities will have exactly the same
fields (just different roleIds).
Is the above possible in OFBiz's Entity framework?
Jonathon
