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

Example 16 with ObjectId

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

the class HierarchicalObjectResolverNode method objectsFromDataRows.

@Override
List<Persistent> objectsFromDataRows(List<? extends DataRow> rows) {
    if (rows == null || rows.size() == 0) {
        return new ArrayList<>(1);
    }
    List<Persistent> results = new ArrayList<>(rows.size());
    for (DataRow row : rows) {
        // determine entity to use
        ClassDescriptor classDescriptor = descriptorResolutionStrategy.descriptorForRow(row);
        // not using DataRow.createObjectId for performance reasons -
        // ObjectResolver
        // has all needed metadata already cached.
        ObjectId anId = createObjectId(row, classDescriptor.getEntity(), null);
        Persistent object = objectFromDataRow(row, anId, classDescriptor);
        if (object == null) {
            throw new CayenneRuntimeException("Can't build Object from row: %s", row);
        }
        // keep the dupe objects (and data rows) around, as there maybe an
        // attached
        // joint prefetch...
        results.add(object);
        node.getParentAttachmentStrategy().linkToParent(row, object);
    }
    // now deal with snapshots
    // TODO: refactoring: dupes will clutter the lists and cause extra
    // processing...
    // removal of dupes happens only downstream, as we need the objects
    // matching
    // fetched rows for joint prefetch resolving... maybe pushback unique
    // and
    // non-unique lists to the "node", instead of returning a single list
    // from this
    // method
    cache.snapshotsUpdatedForObjects(results, rows, refreshObjects);
    return results;
}

Example 17 with ObjectId

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

the class JoinedIdParentAttachementStrategy method linkToParent.

public void linkToParent(DataRow row, Persistent object) {
    Persistent parentObject = null;
    for (ObjEntity entity : sourceEntities) {
        if (entity.isAbstract()) {
            continue;
        }
        ObjectId id = node.getResolver().createObjectId(row, entity, relatedIdPrefix);
        if (id == null) {
            throw new CayenneRuntimeException("Can't build ObjectId from row: %s, entity: %s, prefix: %s", row, entity.getName(), relatedIdPrefix);
        }
        parentObject = (Persistent) graphManager.getNode(id);
        if (parentObject != null) {
            break;
        }
    }
    node.linkToParent(object, parentObject);
}

Example 18 with ObjectId

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

the class ObjectDiff method getArcSnapshotValue.

ObjectId getArcSnapshotValue(String propertyName) {
    Object value = arcSnapshot != null ? arcSnapshot.get(propertyName) : null;
    if (value instanceof Fault) {
        Persistent target = (Persistent) ((Fault) value).resolveFault(object, propertyName);
        value = target != null ? target.getObjectId() : null;
        arcSnapshot.put(propertyName, value);
    }
    return (ObjectId) value;
}

Example 19 with ObjectId

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

the class ObjectResolver method createObjectId.

ObjectId createObjectId(DataRow dataRow, ObjEntity objEntity, String namePrefix) {
    Collection<DbAttribute> pk = objEntity == this.descriptor.getEntity() ? this.primaryKey : objEntity.getDbEntity().getPrimaryKeys();
    boolean prefix = namePrefix != null && namePrefix.length() > 0;
    if (pk.size() == 1) {
        DbAttribute attribute = pk.iterator().next();
        String key = (prefix) ? namePrefix + attribute.getName() : attribute.getName();
        Object val = dataRow.get(key);
        // this is possible when processing left outer joint prefetches
        if (val == null) {
            if (!dataRow.containsKey(key)) {
                throw new CayenneRuntimeException("No PK column '%s' found in data row.", key);
            }
            return null;
        }
        // PUT without a prefix
        return new ObjectId(objEntity.getName(), attribute.getName(), val);
    }
    // ... handle generic case - PK.size > 1
    Map<String, Object> idMap = new HashMap<>(pk.size() * 2);
    for (final DbAttribute attribute : pk) {
        String key = (prefix) ? namePrefix + attribute.getName() : attribute.getName();
        Object val = dataRow.get(key);
        // this is possible when processing left outer joint prefetches
        if (val == null) {
            if (!dataRow.containsKey(key)) {
                throw new CayenneRuntimeException("No PK column '%s' found in data row.", key);
            }
            return null;
        }
        // PUT without a prefix
        idMap.put(attribute.getName(), val);
    }
    return new ObjectId(objEntity.getName(), idMap);
}

Example 20 with ObjectId

use of org.apache.cayenne.ObjectId 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;
            }
        }
    }
}