Examples of org.datanucleus.metadata.ClassMetaData.populate()

org.datanucleus.metadata.ClassMetaData.populate()

Method to provide the details of the class being represented by this MetaData. This can be used to firstly provide defaults for attributes that aren't specified in the MetaData, and secondly to report any errors with attributes that have been specified that are inconsistent with the class being represented.

One possible use of this method would be to take a basic ClassMetaData for a class and call this, passing in the users class. This would then add FieldMetaData for all fields in this class providing defaults for all of these. @param clr ClassLoaderResolver to use in loading any classes @param primary the primary ClassLoader to use (or null) @param mmgr MetaData manager

        {
            PackageMetaData pmd = filemd.getPackage(i);
            for (int j=0; j<pmd.getNoOfClasses(); j++)
            {
                ClassMetaData cmd = pmd.getClass(j);
                cmd.populate(clr, null, mgr);
                cmd.initialise(clr, mgr);
            }
        }


        // Enhance the classes

        // Do as PrivilegedAction since populate()/initialise() use reflection to get additional fields
        AccessController.doPrivileged(new PrivilegedAction()
        {
            public Object run()
            {
                implementationCmd.populate(genclr, null, metaDataMgr);
                implementationCmd.initialise(genclr, metaDataMgr);
                return null;
            }
        });

        // Do as PrivilegedAction since populate()/initialise() use reflection to get additional fields
        AccessController.doPrivileged(new PrivilegedAction()
        {
            public Object run()
            {
                implementationCmd.populate(genclr, null);
                implementationCmd.initialise(genclr);
                return null;
            }
        });

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