FAQ
Implement flattened attributes in Cayenne
-----------------------------------------

Key: CAY-948
URL: https://issues.apache.org/cayenne/browse/CAY-948
Project: Cayenne
Issue Type: Task
Components: Cayenne Core Library
Affects Versions: 3.0
Reporter: Andrus Adamchik
Assignee: Andrus Adamchik
Fix For: 3.0


We need to support flattened attributes in Cayenne.... JPA has a @SecondaryTable annotation, that is essentially a one step flattened attribute and IIRC Andriy implemented a similar mapping scenario long time ago (Cayenne 1.1), only without a Modeler support. So we need to finally make it official, create test cases, modeler support, etc.

In Cayenne API terms, flattened attribute is an object attribute mapped over a DbRelationship to a joined table column. A few things to consider:

* Whether to support multi-step flattened attributes
* Whether to load such attributes eagerly or lazily (JPA's default for @Basic is EAGER, but it is configurable...)



--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.

Search Discussions

  • Anonymous at Dec 24, 2007 at 12:08 am
    [ https://issues.apache.org/cayenne/browse/CAY-948?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Andrus Adamchik closed CAY-948.
    -------------------------------

    Resolution: Fixed

    works with Cayenne classic and JPA... Still missing Modeler support
    Implement flattened attributes in Cayenne
    -----------------------------------------

    Key: CAY-948
    URL: https://issues.apache.org/cayenne/browse/CAY-948
    Project: Cayenne
    Issue Type: Task
    Components: Cayenne Core Library
    Affects Versions: 3.0
    Reporter: Andrus Adamchik
    Assignee: Andrus Adamchik
    Fix For: 3.0


    We need to support flattened attributes in Cayenne.... JPA has a @SecondaryTable annotation, that is essentially a one step flattened attribute and IIRC Andriy implemented a similar mapping scenario long time ago (Cayenne 1.1), only without a Modeler support. So we need to finally make it official, create test cases, modeler support, etc.
    In Cayenne API terms, flattened attribute is an object attribute mapped over a DbRelationship to a joined table column. A few things to consider:
    * Whether to support multi-step flattened attributes
    * Whether to load such attributes eagerly or lazily (JPA's default for @Basic is EAGER, but it is configurable...)
    --
    This message is automatically generated by JIRA.
    -
    You can reply to this email to add a comment to the issue online.

Related Discussions

Discussion Navigation
viewthread | post
Discussion Overview
groupdev @
categoriescayenne
postedDec 22, '07 at 9:56p
activeDec 24, '07 at 12:08a
posts2
users1
websitecayenne.apache.org

1 user in discussion

Anonymous: 2 posts

People

Translate

site design / logo © 2022 Grokbase