reverse engineering partially changed schema

From: Tobias Schoessler (tobias.schoessle..mail.com)
Date: Mon May 11 2009 - 10:24:44 EDT

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    Hi,

    I get an error in the CayenneModeler 1.2.4 when reverse engineering my
    schema partially.

    CayenneModeler INFO [Thread-13 04-27 15:02:50]
    org.objectstyle.cayenne.modeler.dialog.db.DbLoaderHelper: Exception on
    reverse engineering
    java.lang.NullPointerException
            at
    org.objectstyle.cayenne.access.DbLoader.loadDbRelationships(DbLoader.java:661)

            at
    org.objectstyle.cayenne.access.DbLoader.loadDbEntities(DbLoader.java:488)
            at
    org.objectstyle.cayenne.access.DbLoader.loadDataMapFromDB(DbLoader.java:775)

            at
    org.objectstyle.cayenne.access.DbLoader.loadDataMapFromDB(DbLoader.java:758)

            at
    org.objectstyle.cayenne.modeler.dialog.db.DbLoaderHelper$LoadDataMapTask.execute(DbLoaderHelper.java:388)

            at
    org.objectstyle.cayenne.modeler.util.LongRunningTask.internalExecute(LongRunningTask.java:251)

            at
    org.objectstyle.cayenne.modeler.util.LongRunningTask$1.run(LongRunningTask.java:139)

            at java.lang.Thread.run(Unknown Source)

    I have updated a portion of the schema in the database. I delete the
    DbEntities and ObjEntities of the tables that were changed.

    I then click reverse Engineer from database. I get popups asking whether to
    overwrite existing Objects. I click "remember my decision" and NO.

    at the end I get an error popup without a message. It is just containing the
    red error icon and a title reading "Error Reengineering Database".

    This error does occur also when I select not to remember my decision and
    click through each popup one by one.

    When reverse engineering the whole database, removing all ObjEntities and
    all DBEntities, before reverse engineering the error does not occur. I have
    many custom mappings redoing the existing mapping is not really an option.

    Any help highly appreciated.

    thanks,Tobias

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