Examples of org.apache.cayenne.reflect.ClassDescriptor

org.apache.cayenne.reflect.ClassDescriptor
A runtime descriptor of an persistent class. @since 1.2

        public boolean visitFromItem(EJBQLFromItem expression, int finishedChildIndex) {


            if (finishedChildIndex + 1 == expression.getChildrenCount()) {


                // resolve class descriptor
                ClassDescriptor descriptor = resolver.getClassDescriptor(entityName);
                if (descriptor == null) {
                    throw new EJBQLException("Unmapped abstract schema name: "
                            + entityName);
                }


                // per JPA spec, 4.4.2, "Identification variables are case insensitive."
                String id = normalizeIdPath(expression.getId());


                ClassDescriptor old = descriptorsById.put(id, descriptor);
                if (old != null && old != descriptor) {
                    throw new EJBQLException(
                            "Duplicate identification variable definition: "
                                    + id
                                    + ", it is already used for "
                                    + old.getEntity().getName());
                }


                // if root wasn't detected in the Select Clause, use the first id var as
                // root
                if (Compiler.this.rootId == null) {

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            if (incoming != null) {


                String aliasId = expression.getText();


                // map id variable to class descriptor
                ClassDescriptor old = descriptorsById.put(aliasId, descriptor);
                if (old != null && old != descriptor) {
                    throw new EJBQLException(
                            "Duplicate identification variable definition: "
                                    + aliasId
                                    + ", it is already used for "
                                    + old.getEntity().getName());
                }


                incomingById.put(aliasId, incoming);


                id = null;

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    boolean addNode(PrefetchProcessorNode node) {


        List rows;
        ArcProperty arc;
        ClassDescriptor descriptor;


        PrefetchProcessorNode currentNode = getParent();


        if (currentNode != null) {
            rows = (List) extraResultsByPath.get(node.getPath());

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    class SingleObjectConversionStrategy extends ObjectConversionStrategy<DataRow> {


        @Override
        void convert(List<DataRow> mainRows) {


            ClassDescriptor descriptor = metadata.getClassDescriptor();
            PrefetchTreeNode prefetchTree = metadata.getPrefetchTree();


            List<Persistent> objects = toObjects(descriptor, prefetchTree, mainRows);
            updateResponse(mainRows, objects);

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            return getObjectStore().getSnapshot(object.getObjectId());
        }


        ObjEntity entity = getEntityResolver().lookupObjEntity(object);
        final ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(
                entity.getName());
        final DataRow snapshot = new DataRow(10);


        descriptor.visitProperties(new PropertyVisitor() {


            public boolean visitAttribute(AttributeProperty property) {
                ObjAttribute objAttr = property.getAttribute();


                // processing compound attributes correctly

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            ObjEntity entity,
            List dataRows,
            boolean refresh,
            boolean resolveInheritanceHierarchy) {


        ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(
                entity.getName());
        return objectsFromDataRows(descriptor, dataRows);
    }

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        if (entity == null) {
            throw new CayenneRuntimeException("Unmapped Java class: " + objectClass);
        }


        ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(
                entity.getName());
        return objectsFromDataRows(descriptor, dataRows);
    }

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        if (entity == null) {
            throw new CayenneRuntimeException("Unmapped Java class: " + objectClass);
        }


        ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(
                entity.getName());
        List<T> list = objectsFromDataRows(descriptor, Collections.singletonList(dataRow));
        return list.get(0);
    }

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    public DataObject objectFromDataRow(
            String entityName,
            DataRow dataRow,
            boolean refresh) {


        ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(entityName);
        List<?> list = objectsFromDataRows(descriptor, Collections.singletonList(dataRow));


        return (DataObject) list.get(0);
    }

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     * this method is helpful when generic persistent classes are used.</i>
     * 
     * @since 3.0
     */
    public Persistent newObject(String entityName) {
        ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(entityName);
        if (descriptor == null) {
            throw new IllegalArgumentException("Invalid entity name: " + entityName);
        }


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


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


        ObjectId id = new ObjectId(entityName);


        // note that the order of initialization of persistence artifacts below is
        // important - do not change it lightly

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