Examples with ClassDescriptor org.apache.cayenne.reflect.ClassDescriptor used on opensource projects

Example 56 with ClassDescriptor

use of org.apache.cayenne.reflect.ClassDescriptor in project cayenne by apache.

the class DataObjectDescriptorFactory_InheritanceMapsIT method testVisitProperties_IterationOrder.

@Test
public void testVisitProperties_IterationOrder() {
    DataObjectDescriptorFactory factory = new DataObjectDescriptorFactory(resolver.getClassDescriptorMap(), new SingletonFaultFactory());
    for (ObjEntity e : resolver.getObjEntities()) {
        ClassDescriptor descriptor = factory.getDescriptor(e.getName());
        final PropertyDescriptor[] lastProcessed = new PropertyDescriptor[1];
        PropertyVisitor visitor = new PropertyVisitor() {

            public boolean visitToOne(ToOneProperty property) {
                DataObjectDescriptorFactoryIT.assertPropertiesAreInOrder(lastProcessed[0], property);
                lastProcessed[0] = property;
                return true;
            }

            public boolean visitToMany(ToManyProperty property) {
                DataObjectDescriptorFactoryIT.assertPropertiesAreInOrder(lastProcessed[0], property);
                lastProcessed[0] = property;
                return true;
            }

            public boolean visitAttribute(AttributeProperty property) {
                DataObjectDescriptorFactoryIT.assertPropertiesAreInOrder(lastProcessed[0], property);
                lastProcessed[0] = property;
                return true;
            }
        };
        descriptor.visitProperties(visitor);
    }
}

Example 57 with ClassDescriptor

use of org.apache.cayenne.reflect.ClassDescriptor in project cayenne by apache.

the class EntityResolverClassDescriptorIT method testServerDescriptorCaching.

@Test
public void testServerDescriptorCaching() {
    EntityResolver resolver = runtime.getDataDomain().getEntityResolver();
    resolver.getClassDescriptorMap().clearDescriptors();
    ClassDescriptor descriptor = resolver.getClassDescriptor("MtTable1");
    assertNotNull(descriptor);
    assertSame(descriptor, resolver.getClassDescriptor("MtTable1"));
    resolver.getClassDescriptorMap().clearDescriptors();
    ClassDescriptor descriptor1 = resolver.getClassDescriptor("MtTable1");
    assertNotNull(descriptor1);
    assertNotSame(descriptor, descriptor1);
}

Example 58 with ClassDescriptor

use of org.apache.cayenne.reflect.ClassDescriptor in project cayenne by apache.

the class ObjectContextDeleteAction method processDeleteRules.

private void processDeleteRules(final Persistent object, int oldState) throws DeleteDenyException {
    ClassDescriptor descriptor = context.getEntityResolver().getClassDescriptor(object.getObjectId().getEntityName());
    for (final ObjRelationship relationship : descriptor.getEntity().getRelationships()) {
        boolean processFlattened = relationship.isFlattened() && relationship.isToDependentEntity() && !relationship.isReadOnly();
        // first check for no action... bail out if no flattened processing is needed
        if (relationship.getDeleteRule() == DeleteRule.NO_ACTION && !processFlattened) {
            continue;
        }
        ArcProperty property = (ArcProperty) descriptor.getProperty(relationship.getName());
        final Collection<Persistent> relatedObjects = toCollection(property.readProperty(object));
        // no related object, bail out
        if (relatedObjects.size() == 0) {
            continue;
        }
        // process DENY rule first...
        if (relationship.getDeleteRule() == DeleteRule.DENY) {
            object.setPersistenceState(oldState);
            String message = relatedObjects.size() == 1 ? "1 related object" : relatedObjects.size() + " related objects";
            throw new DeleteDenyException(object, relationship.getName(), message);
        }
        // object graph
        if (processFlattened) {
            for (Persistent relatedObject : relatedObjects) {
                context.getGraphManager().arcDeleted(object.getObjectId(), relatedObject.getObjectId(), relationship.getName());
            }
        }
        // process remaining rules
        switch(relationship.getDeleteRule()) {
            case DeleteRule.NO_ACTION:
                break;
            case DeleteRule.NULLIFY:
                ArcProperty reverseArc = property.getComplimentaryReverseArc();
                if (reverseArc == null) {
                    // nothing we can do here
                    break;
                }
                reverseArc.visit(new PropertyVisitor() {

                    public boolean visitAttribute(AttributeProperty property) {
                        return false;
                    }

                    public boolean visitToMany(ToManyProperty property) {
                        for (Persistent relatedObject : relatedObjects) {
                            property.removeTarget(relatedObject, object, true);
                        }
                        return false;
                    }

                    public boolean visitToOne(ToOneProperty property) {
                        // nullify the reverse relationship
                        for (Persistent relatedObject : relatedObjects) {
                            property.setTarget(relatedObject, null, true);
                        }
                        return false;
                    }
                });
                break;
            case DeleteRule.CASCADE:
                // Delete all related objects
                for (Persistent relatedObject : relatedObjects) {
                    performDelete(relatedObject);
                }
                break;
            default:
                object.setPersistenceState(oldState);
                throw new CayenneRuntimeException("Invalid delete rule %s", relationship.getDeleteRule());
        }
    }
}

Example 59 with ClassDescriptor

use of org.apache.cayenne.reflect.ClassDescriptor in project cayenne by apache.

the class PersistentObject method getMapKey.

/**
 * Returns a map key for a given to-many map relationship and a target object.
 *
 * @since 3.0
 */
protected Object getMapKey(String relationshipName, Object value) {
    EntityResolver resolver = objectContext.getEntityResolver();
    ClassDescriptor descriptor = resolver.getClassDescriptor(objectId.getEntityName());
    if (descriptor == null) {
        throw new IllegalStateException("DataObject's entity is unmapped, objectId: " + objectId);
    }
    PropertyDescriptor property = descriptor.getProperty(relationshipName);
    if (property instanceof ToManyMapProperty) {
        return ((ToManyMapProperty) property).getMapKey(value);
    }
    throw new IllegalArgumentException("Relationship '" + relationshipName + "' is not a to-many Map");
}

Example 60 with ClassDescriptor

use of org.apache.cayenne.reflect.ClassDescriptor in project cayenne by apache.

the class ClientServerChannelQueryAction method convertSingleObject.

private Object convertSingleObject(PrefetchTreeNode prefetchTree, ObjectDetachOperation op, Object serverObject) {
    Persistent object = (Persistent) serverObject;
    ObjectId id = object.getObjectId();
    // sanity check
    if (id == null) {
        throw new CayenneRuntimeException("Server returned an object without an id: %s", object);
    }
    // have to resolve descriptor here for every object, as
    // often a query will not have any info indicating the
    // entity type
    ClassDescriptor serverDescriptor = serverResolver.getClassDescriptor(id.getEntityName());
    return op.detach(object, serverDescriptor, prefetchTree);
}