Examples with MutableObjectChange org.apache.cayenne.commitlog.model.MutableObjectChange used on opensource projects

Example 1 with MutableObjectChange

use of org.apache.cayenne.commitlog.model.MutableObjectChange in project cayenne by apache.

the class DeletedDiffProcessor method nodeRemoved.

@Override
public void nodeRemoved(Object nodeId) {
    ObjectId id = (ObjectId) nodeId;
    final MutableObjectChange objectChangeSet = changeSet.getOrCreate(id, ObjectChangeType.DELETE);
    // TODO: rewrite with SelectById query after Cayenne upgrade
    ObjectIdQuery query = new ObjectIdQuery(id, true, ObjectIdQuery.CACHE);
    QueryResponse result = channel.onQuery(null, query);
    @SuppressWarnings("unchecked") List<DataRow> rows = result.firstList();
    if (rows.isEmpty()) {
        LOGGER.warn("No DB snapshot for object to be deleted, no changes will be recorded. ID: " + id);
        return;
    }
    final DataRow row = rows.get(0);
    ClassDescriptor descriptor = channel.getEntityResolver().getClassDescriptor(id.getEntityName());
    final CommitLogEntity entity = entityFactory.getEntity(id);
    descriptor.visitProperties(new PropertyVisitor() {

        @Override
        public boolean visitAttribute(AttributeProperty property) {
            if (!entity.isIncluded(property.getName())) {
                return true;
            }
            Object value;
            if (entity.isConfidential(property.getName())) {
                value = Confidential.getInstance();
            } else {
                String key = property.getAttribute().getDbAttributeName();
                value = row.get(key);
            }
            if (value != null) {
                objectChangeSet.attributeChanged(property.getName(), value, null);
            }
            return true;
        }

        @Override
        public boolean visitToOne(ToOneProperty property) {
            // TODO record FK changes?
            return true;
        }

        @Override
        public boolean visitToMany(ToManyProperty property) {
            return true;
        }
    });
}

Example 2 with MutableObjectChange

use of org.apache.cayenne.commitlog.model.MutableObjectChange in project cayenne by apache.

the class DiffProcessor method arcDeleted.

@Override
public void arcDeleted(Object nodeId, Object targetNodeId, Object arcId) {
    ObjectId id = (ObjectId) nodeId;
    String relationshipName = arcId.toString();
    ObjEntity entity = entityResolver.getObjEntity(id.getEntityName());
    ObjRelationship relationship = entity.getRelationship(relationshipName);
    MutableObjectChange c = changeSet.getOrCreate(id, ObjectChangeType.UPDATE);
    ObjectId tid = (ObjectId) targetNodeId;
    if (relationship.isToMany()) {
        c.toManyRelationshipDisconnected(relationshipName, tid);
    } else {
        c.toOneRelationshipDisconnected(relationshipName, tid);
    }
}

Example 3 with MutableObjectChange

use of org.apache.cayenne.commitlog.model.MutableObjectChange in project cayenne by apache.

the class DiffProcessor method arcCreated.

@Override
public void arcCreated(Object nodeId, Object targetNodeId, Object arcId) {
    ObjectId id = (ObjectId) nodeId;
    String relationshipName = arcId.toString();
    ObjEntity entity = entityResolver.getObjEntity(id.getEntityName());
    ObjRelationship relationship = entity.getRelationship(relationshipName);
    MutableObjectChange c = changeSet.getOrCreate(id, ObjectChangeType.UPDATE);
    ObjectId tid = (ObjectId) targetNodeId;
    if (relationship.isToMany()) {
        c.toManyRelationshipConnected(relationshipName, tid);
    } else {
        c.toOneRelationshipConnected(relationshipName, tid);
    }
}