update / modify data object

From: sridhar devatha (devatha.sridha..mail.com)
Date: Fri Jul 17 2009 - 15:37:36 EDT

  • Next message: Aristedes Maniatis: "Re: update / modify data object"

    Hi ,

    I am using cayenne 2.
    I want to update an employee object. This object is related to employee
    table in the db.
    I generated this data object(along with it's super class) and table query
    using modeler.

    I am able to write insert, delete and select methods for this object easily.
    can you tell me whether the below is the correct way to update/modify the
    object?
    I thought that the object that is sent for updation / modification usually
    exists with data context, as the object is to be retrieved from the
    database. During this getting/selecting process using data context, it will
    be registered with data context. So, i can use localobject without any
    doubt. all the cayenne examples lack modification code.

     Object dataObj =
    this.getDataContext().localObject(employeeDOProto.getObjectId(),employeeDOProto);
            EmployeeDO anEmployeeDO = null;
            if(dataObj != null) {
                anEmployeeDO = (EmployeeDO)dataObj;
                anEmployeeDO.setPersistenceState(PersistenceState.MODIFIED);
            }

            this.commitChanges(); 

    -- 

    Yours Sincerely,
Devatha Sridhar

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