Re: Cayenne vs EOF: How to questions?

From: Dov Rosenberg (dov.rosenber..onviveon.com)
Date: Thu Feb 10 2005 - 19:52:00 EST

  • Next message: Dov Rosenberg: "Re: Cayenne: Is it thread safe as compared to EOF?"

    That is good to hear. How dramatic of a change is it to move from EOF to
    Cayenne? Are you using Tapestry as well? Have you come across anything that
    has given you pause about Cayenne?

    Thanks in advance

    -- 
    Dov Rosenberg
    Conviveon Corporation
    http://www.conviveon.com
    

    On 2/10/05 6:37 PM, "Bryan Lewis" <brya..aine.rr.com> wrote:

    > On the first question, I'm currently converting several old apps from > WebObjects 4.5 to Cayenne and have had no trouble keeping our old flattened > relationships. See the user's guide: > > http://objectstyle.org/cayenne/modelerguide/modeling-object-layer/flattenedrel > .html > > >> >> ----- Original Message ----- >> >> From: Dov Rosenberg <mailto:dov.rosenber..onviveon.com> >> >> To: cayenne-use..bjectstyle.org >> >> Sent: Thursday, February 10, 2005 5:52 PM >> >> Subject: Cayenne vs EOF: How to questions? >> >> >> A few questions on the capabilities of Cayenne as compared to Apple EOF >> >> >> 1. Does Cayenne support flattened relationships like EOF? If so, what is the >> equivalent? >> 2. I understand that Cayenne does not currently support EOPrototypes to make >> it easier to switch between databases, what is the Cayenne preferred method >> for supporting multiple databases? Seems like it has something to do with >> DataMaps. Not sure though >> 3. How can I programmatically swap out my connection dictionary at >> application startup? I.e. Allow me to store userid/password in separate file >> from the cayenne.xml and update them when the app starts up. >> 4. Is there a hook for generating primary keys on the client side similar to >> what we currently do with a DatabaseContextDelegate and our own guid >> generator? >> 5. Is there any Cayenne support for doing lightweight, high volume SQL >> processing (i.e. For batch updates)? EOF has too much overhead for large >> amounts of sql processing in batch mode. Ideally a smarter version of >> RawRowsForSQL that doesnąt create all the objects in an object graph. >> >> Thanks in advance. >>



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