Examples with DataObject org.apache.cayenne.DataObject used on opensource projects

Example 1 with DataObject

use of org.apache.cayenne.DataObject in project cayenne by apache.

the class DataContext method registerNewObject.

/**
 * Registers a transient object with the context, recursively registering
 * all transient persistent objects attached to this object via
 * relationships.
 * <p>
 * <i>Note that since 3.0 this method takes Object as an argument instead of
 * a {@link DataObject}.</i>
 *
 * @param object
 *            new object that needs to be made persistent.
 */
@Override
public void registerNewObject(Object object) {
    if (object == null) {
        throw new NullPointerException("Can't register null object.");
    }
    ObjEntity entity = getEntityResolver().getObjEntity((Persistent) object);
    if (entity == null) {
        throw new IllegalArgumentException("Can't find ObjEntity for Persistent class: " + object.getClass().getName() + ", class is likely not mapped.");
    }
    final Persistent persistent = (Persistent) object;
    // sanity check - maybe already registered
    if (persistent.getObjectId() != null) {
        if (persistent.getObjectContext() == this) {
            // already registered, just ignore
            return;
        } else if (persistent.getObjectContext() != null) {
            throw new IllegalStateException("Persistent is already registered with another DataContext. " + "Try using 'localObjects()' instead.");
        }
    } else {
        persistent.setObjectId(new ObjectId(entity.getName()));
    }
    ClassDescriptor descriptor = getEntityResolver().getClassDescriptor(entity.getName());
    if (descriptor == null) {
        throw new IllegalArgumentException("Invalid entity name: " + entity.getName());
    }
    injectInitialValue(object);
    // now we need to find all arc changes, inject missing value holders and
    // pull in
    // all transient connected objects
    descriptor.visitProperties(new PropertyVisitor() {

        public boolean visitToMany(ToManyProperty property) {
            property.injectValueHolder(persistent);
            if (!property.isFault(persistent)) {
                Object value = property.readProperty(persistent);
                Collection<Map.Entry> collection = (value instanceof Map) ? ((Map) value).entrySet() : (Collection) value;
                Iterator<Map.Entry> it = collection.iterator();
                while (it.hasNext()) {
                    Object target = it.next();
                    if (target instanceof Persistent) {
                        Persistent targetDO = (Persistent) target;
                        // make sure it is registered
                        registerNewObject(targetDO);
                        getObjectStore().arcCreated(persistent.getObjectId(), targetDO.getObjectId(), property.getName());
                    }
                }
            }
            return true;
        }

        public boolean visitToOne(ToOneProperty property) {
            Object target = property.readPropertyDirectly(persistent);
            if (target instanceof Persistent) {
                Persistent targetDO = (Persistent) target;
                // make sure it is registered
                registerNewObject(targetDO);
                getObjectStore().arcCreated(persistent.getObjectId(), targetDO.getObjectId(), property.getName());
            }
            return true;
        }

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

Example 2 with DataObject

use of org.apache.cayenne.DataObject in project cayenne by apache.

the class ObjectStore method processInvalidatedIDs.

/**
 * @since 1.1
 */
void processInvalidatedIDs(Collection<ObjectId> invalidatedIDs) {
    if (invalidatedIDs != null && !invalidatedIDs.isEmpty()) {
        for (ObjectId oid : invalidatedIDs) {
            DataObject object = (DataObject) getNode(oid);
            if (object == null) {
                continue;
            }
            switch(object.getPersistenceState()) {
                case PersistenceState.COMMITTED:
                    object.setPersistenceState(PersistenceState.HOLLOW);
                    break;
                case PersistenceState.MODIFIED:
                    DataContext context = (DataContext) object.getObjectContext();
                    DataRow diff = getSnapshot(oid);
                    // consult delegate if it exists
                    DataContextDelegate delegate = context.nonNullDelegate();
                    if (delegate.shouldMergeChanges(object, diff)) {
                        ClassDescriptor descriptor = context.getEntityResolver().getClassDescriptor(oid.getEntityName());
                        DataRowUtils.forceMergeWithSnapshot(context, descriptor, object, diff);
                        delegate.finishedMergeChanges(object);
                    }
                case PersistenceState.HOLLOW:
                    // do nothing
                    break;
                case PersistenceState.DELETED:
                    // TODO: Do nothing? Or treat as merged?
                    break;
            }
        }
    }
}

Example 3 with DataObject

use of org.apache.cayenne.DataObject in project cayenne by apache.

the class ObjectStore method processDeletedID.

/**
 * Requires external synchronization.
 *
 * @since 1.2
 */
void processDeletedID(ObjectId nodeId) {
    // access object map directly - the method should be called in a synchronized context...
    Persistent object = objectMap.get(nodeId);
    if (object != null) {
        DataObject dataObject = (object instanceof DataObject) ? (DataObject) object : null;
        DataContextDelegate delegate;
        switch(object.getPersistenceState()) {
            case PersistenceState.COMMITTED:
            case PersistenceState.HOLLOW:
            case PersistenceState.DELETED:
                // consult delegate
                delegate = context.nonNullDelegate();
                if (dataObject == null || delegate.shouldProcessDelete(dataObject)) {
                    objectMap.remove(nodeId);
                    changes.remove(nodeId);
                    // setting DataContext to null will also set
                    // state to transient
                    object.setObjectContext(null);
                    if (dataObject != null) {
                        delegate.finishedProcessDelete(dataObject);
                    }
                }
                break;
            case PersistenceState.MODIFIED:
                // consult delegate
                delegate = context.nonNullDelegate();
                if (dataObject != null && delegate.shouldProcessDelete(dataObject)) {
                    object.setPersistenceState(PersistenceState.NEW);
                    changes.remove(nodeId);
                    registerNode(nodeId, object);
                    nodeCreated(nodeId);
                    delegate.finishedProcessDelete(dataObject);
                }
                break;
        }
    }
}

Example 4 with DataObject

use of org.apache.cayenne.DataObject in project cayenne by apache.

the class CayenneSQLTemplateProcessorTest method testProcessTemplateNotEqualID.

@Test
public void testProcessTemplateNotEqualID() throws Exception {
    String sqlTemplate = "SELECT * FROM ME WHERE " + "COLUMN1 #bindNotEqual($helper.cayenneExp($a, 'db:ID_COLUMN1')) " + "AND COLUMN2 #bindNotEqual($helper.cayenneExp($a, 'db:ID_COLUMN2'))";
    Map<String, Object> idMap = new HashMap<>();
    idMap.put("ID_COLUMN1", 3);
    idMap.put("ID_COLUMN2", "aaa");
    ObjectId id = new ObjectId("T", idMap);
    DataObject dataObject = new CayenneDataObject();
    dataObject.setObjectId(id);
    Map<String, Object> map = Collections.singletonMap("a", dataObject);
    SQLStatement compiled = processor.processTemplate(sqlTemplate, map);
    assertEquals("SELECT * FROM ME WHERE COLUMN1 <> ? AND COLUMN2 <> ?", compiled.getSql());
    assertEquals(2, compiled.getBindings().length);
    assertBindingValue(3, compiled.getBindings()[0]);
    assertBindingValue("aaa", compiled.getBindings()[1]);
}

Example 5 with DataObject

use of org.apache.cayenne.DataObject in project cayenne by apache.

the class SimpleIdIncrementalFaultListIT method testIterator.

@Test
public void testIterator() throws Exception {
    SimpleIdIncrementalFaultList<?> list = prepareList(6);
    Iterator<?> it = list.iterator();
    int counter = 0;
    while (it.hasNext()) {
        Object obj = it.next();
        assertNotNull(obj);
        assertTrue(obj instanceof DataObject);
        // iterator must be resolved page by page
        int expectedResolved = list.pageIndex(counter) * list.getPageSize() + list.getPageSize();
        if (expectedResolved > list.size()) {
            expectedResolved = list.size();
        }
        assertEquals(list.size() - expectedResolved, list.getUnfetchedObjects());
        counter++;
    }
}