DataMap.loadDataMap existing ObjectContext?

From: caden whitaker (caden.whitake..mail.com)
Date: Tue Nov 02 2010 - 13:59:10 UTC

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    Hey all,

    I'm still on my quest to get this stuff loaded dynamically. Here's what I'm
    doing now, first I gutted the map xml file so that it looks like this:

    TestProjectSourceMap.map.xml
    <?xml version="1.0" encoding="utf-8"?>
    <data-map xmlns="http://cayenne.apache.org/schema/3.0/modelMap"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://cayenne.apache.org/schema/3.0/modelMap
    http://cayenne.apache.org/schema/3.0/modelMap.xsd"
      project-version="3.0.0.1">
        <property name="defaultPackage" value="org.example.cayenne.persistent"/>

    </data-map>

    Built a new Map xml file that had all of the real class associations and put
    it someplace else, that file looks like this

    TestProjectNewMap.map.xml
    <?xml version="1.0" encoding="utf-8"?>
    <data-map xmlns="http://cayenne.apache.org/schema/3.0/modelMap"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://cayenne.apache.org/schema/3.0/modelMap
    http://cayenne.apache.org/schema/3.0/modelMap.xsd"
      project-version="3.0.0.1">
        <property name="defaultPackage" value="org.example.cayenne.persistent"/>
        <db-entity name="ARTIST">
            <db-attribute name="ArtistID" type="BIGINT" isPrimaryKey="true"
    isMandatory="true"/>
            <db-attribute name="Name" type="VARCHAR" length="255"/>
        </db-entity>
    ....
        <obj-relationship name="artist" source="Painting" target="Artist"
    deleteRule="Nullify" db-relationship-path="artist"/>
    </data-map>

    All I want to do is load in this OTHER xml file, right now I'm getting
    "Class is not mapped with Cayenne:
    main.java.org.example.cayenne.persistent.Artist" which is because it has not
    loaded my other xml file. Here is what I'm doing:

                ObjectContext context = DataContext.createDataContext();

                MapLoader ml = new MapLoader();

                DataMap dataMap = ml.loadDataMap(new InputSource(new
    FileInputStream("C:\\eclipse_cayenne\\tutorial\\src\\main\\resources\\Map.map.xml")));

                //This will bomb because I havent DONE anything with the datamap

                Artist picasso = context.newObject(Artist.class);

    So what do I do with that DataMap to get it loaded into the context? I've
    been looking but I Don't see the method call I need to make to push that
    DataMap anywhere. Note the other files (cayenne.xml,
    TestProjectNode.driver.xml) remain unchanged.

    Any help would be greatly appreciated.

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