Examples of org.apache.cayenne.property.ClassDescriptor

org.apache.cayenne.property.ClassDescriptor
Provides access to a set of persistent properties of a Java Bean and methods for manipulating such bean. @since 1.2 @author Andrus Adamchik


        return object;
    }


    Persistent createFault(ObjectId id) {
        ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(
                id.getEntityName());


        Persistent object = (Persistent) descriptor.createObject();


        object.setPersistenceState(PersistenceState.HOLLOW);
        object.setObjectContext(this);
        object.setObjectId(id);


        // note that this must be called AFTER setting persistence state, otherwise we'd
        // get ValueHolders incorrectly marked as resolved
        descriptor.injectValueHolders(object);


        graphManager.registerNode(id, object);


        return object;
    }

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     * </p>
     * 
     * @see #createAndRegisterNewObject(Class)
     */
    public DataObject createAndRegisterNewObject(String objEntityName) {
        ClassDescriptor descriptor = getEntityResolver()
                .getClassDescriptor(objEntityName);
        if (descriptor == null) {
            throw new IllegalArgumentException("Invalid entity name: " + objEntityName);
        }


        DataObject dataObject;
        try {
            dataObject = (DataObject) descriptor.createObject();
        }
        catch (Exception ex) {
            throw new CayenneRuntimeException("Error instantiating object.", ex);
        }


        // this will initialize to-many lists
        descriptor.injectValueHolders(dataObject);


        dataObject.setObjectId(new ObjectId(objEntityName));
        dataObject.setDataContext(this);
        dataObject.setPersistenceState(PersistenceState.NEW);
        getObjectStore().recordObjectCreated(dataObject);

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        getObjectStore().recordObjectCreated(object);


        // now we need to find all arc changes, inject missing value holders and pull in
        // all transient connected objects


        ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(
                entity.getName());
        if (descriptor == null) {
            throw new IllegalArgumentException("Invalid entity name: " + entity.getName());
        }


        descriptor.visitProperties(new PropertyVisitor() {


            public boolean visitCollectionArc(CollectionProperty property) {
                property.injectValueHolder(object);


                if (!property.isFault(object)) {

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        }


        // note that per-object ClassDescriptor lookup is needed as even if all
        // objects where fetched as a part of the same query, as they may belong to
        // different subclasses
        ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(
                id.getEntityName());


        Persistent cachedObject = (Persistent) getGraphManager().getNode(id);


        // merge into an existing object
        if (cachedObject != null) {


            int state = cachedObject.getPersistenceState();


            // TODO: Andrus, 1/24/2006 implement smart merge for modified objects...
            if (cachedObject != prototype
                    && state != PersistenceState.MODIFIED
                    && state != PersistenceState.DELETED) {


                descriptor.injectValueHolders(cachedObject);


                if (prototype != null
                        && prototype.getPersistenceState() != PersistenceState.HOLLOW) {


                    descriptor.shallowMerge(prototype, cachedObject);


                    if (state == PersistenceState.HOLLOW) {
                        cachedObject.setPersistenceState(PersistenceState.COMMITTED);
                    }
                }
            }


            return cachedObject;
        }
        // create and merge into a new object
        else {


            Persistent localObject = (Persistent) descriptor.createObject();


            localObject.setObjectContext(this);
            localObject.setObjectId(id);


            getGraphManager().registerNode(id, localObject);


            if (prototype != null
                    && prototype.getPersistenceState() != PersistenceState.HOLLOW) {
                localObject.setPersistenceState(PersistenceState.COMMITTED);
                descriptor.injectValueHolders(localObject);
                descriptor.shallowMerge(prototype, localObject);
            }
            else {
                localObject.setPersistenceState(PersistenceState.HOLLOW);
            }

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